/* tailku — css library v1.4.0 */

/* fonts */

@font-face {
  font-family: 'Plus Jakarta Sans';
  src: url('./jakarta-sans.ttf') format('truetype');
  font-weight: 100 900;
  font-style: normal;
  font-display: block;
}

@font-face {
  font-family: 'Plus Jakarta Sans';
  src: url('./jakarta-sans-italic.ttf') format('truetype');
  font-weight: 100 900;
  font-style: italic;
  font-display: block;
}

/* design tokens — light */

:root {
  /* brand primitives */
  --tk-blue-50:             #EFF6FF;
  --tk-blue-100:            #DBEAFE;
  --tk-blue-200:            #BFDBFE;
  --tk-blue-300:            #93C5FD;
  --tk-blue-400:            #60A5FA;
  --tk-blue-500:            #3B82F6;
  --tk-blue-600:            #2563EB;
  --tk-blue-700:            #1D4ED8;
  --tk-blue-800:            #1E40AF;
  --tk-blue-900:            #1E3A8A;
  --tk-blue-950:            #172554;

  --tk-neutral-0:           #FFFFFF;
  --tk-neutral-50:          #F8FAFC;
  --tk-neutral-100:         #F1F5F9;
  --tk-neutral-200:         #E2E8F0;
  --tk-neutral-300:         #CBD5E1;
  --tk-neutral-400:         #94A3B8;
  --tk-neutral-500:         #64748B;
  --tk-neutral-600:         #475569;
  --tk-neutral-700:         #334155;
  --tk-neutral-800:         #1E293B;
  --tk-neutral-900:         #0F172A;
  --tk-neutral-950:         #020617;

  /* brand semantics */
  --tk-brand:              #2563EB;
  --tk-brand-hover:        #1D4ED8;
  --tk-brand-active:       #1E40AF;
  --tk-brand-light:        #3B82F6;
  --tk-brand-tint:         #DBEAFE;
  --tk-brand-tint-deep:    #BFDBFE;

  /* btn tokens are darker to pass white text contrast */
  --tk-brand-btn:          #2563EB;
  --tk-brand-btn-hover:    #1D4ED8;
  --tk-brand-btn-active:   #1E40AF;

  /* text */
  --tk-text:               #0F172A;
  --tk-text-secondary:     #475569;
  --tk-text-muted:         #64748B;
  --tk-text-disabled:      #CBD5E1;
  --tk-text-inverse:       #F8FAFC;
  --tk-text-on-brand:      #FFFFFF;

  /* surfaces */
  --tk-bg:                 #FFFFFF;
  --tk-bg-subtle:          #F8FAFC;
  --tk-bg-muted:           #F1F5F9;
  --tk-bg-emphasis:        #E2E8F0;

  /* borders */
  --tk-border:             #E2E8F0;
  --tk-border-strong:      #CBD5E1;
  --tk-border-focus:       rgba(37, 99, 235, 0.45);

  /* on-tint text */
  
  
  --tk-brand-on-tint:      #1E3A8A;   /* on #DBEAFE — 7.1:1 */
  --tk-success-on-tint:    #065F46;   /* on #D1FAE5 — 5.8:1 */
  --tk-warning-on-tint:    #7C2D12;   /* on #FEF3C7 — 7.2:1 */
  --tk-danger-on-tint:     #991B1B;   /* on #FEE2E2 — 5.3:1 */
  --tk-info-on-tint:       #155E75;   /* on #CFFAFE — 5.6:1 */

  /* status */
  --tk-success:            #10B981;   /* decorative */
  --tk-success-text:       #047857;
  --tk-success-btn:        #047857;   /* button bg — white text 5.5:1 AA */
  --tk-success-btn-hover:  #065F46;
  --tk-success-hover:      #059669;
  --tk-success-tint:       #D1FAE5;
  --tk-warning:            #F59E0B;
  --tk-warning-text:       #92400E;
  --tk-warning-hover:      #D97706;
  --tk-warning-tint:       #FEF3C7;
  --tk-danger:             #EF4444;   /* decorative */
  --tk-danger-text:        #B91C1C;
  --tk-danger-btn:         #DC2626;   /* button bg — white text 4.8:1 AA */
  --tk-danger-btn-hover:   #B91C1C;
  --tk-danger-hover:       #DC2626;
  --tk-danger-tint:        #FEE2E2;
  --tk-info:               #06B6D4;
  --tk-info-text:          #0E7490;
  --tk-info-hover:         #0891B2;
  --tk-info-tint:          #CFFAFE;

  /* radius */
  --tk-radius-xs:          2px;
  --tk-radius-sm:          4px;
  --tk-radius:             6px;
  --tk-radius-md:          8px;
  --tk-radius-lg:          12px;
  --tk-radius-xl:          18px;
  --tk-radius-full:        9999px;

  /* shadows — static only */
  --tk-shadow-xs:          0 1px 2px rgba(15, 23, 42, 0.05);
  --tk-shadow-sm:          0 1px 3px rgba(15, 23, 42, 0.07), 0 1px 2px rgba(15, 23, 42, 0.04);
  --tk-shadow:             0 2px 6px rgba(15, 23, 42, 0.08), 0 1px 2px rgba(15, 23, 42, 0.04);
  --tk-shadow-md:          0 4px 12px rgba(15, 23, 42, 0.09), 0 2px 4px rgba(15, 23, 42, 0.04);
  --tk-shadow-lg:          0 8px 24px rgba(15, 23, 42, 0.10), 0 4px 8px rgba(15, 23, 42, 0.04);

  /* typography */
  --tk-font:               'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --tk-font-mono:          'SF Mono', 'Fira Code', 'Cascadia Code', ui-monospace, monospace;

  --tk-text-xs:            0.75rem;
  --tk-text-sm:            0.875rem;
  --tk-text-base:          1rem;
  --tk-text-md:            1.125rem;
  --tk-text-lg:            1.25rem;
  --tk-text-xl:            1.5rem;
  --tk-text-2xl:           1.875rem;
  --tk-text-3xl:           2.25rem;
  --tk-text-4xl:           3rem;

  --tk-leading-tight:      1.2;
  --tk-leading-snug:       1.35;
  --tk-leading-normal:     1.5;
  --tk-leading-relaxed:    1.65;

  --tk-tracking-tight:     -0.03em;
  --tk-tracking-snug:      -0.015em;
  --tk-tracking-normal:    0em;
  --tk-tracking-wide:      0.04em;
  --tk-tracking-wider:     0.08em;

  /* spacing */
  --tk-space-1:            0.25rem;
  --tk-space-2:            0.5rem;
  --tk-space-3:            0.75rem;
  --tk-space-4:            1rem;
  --tk-space-5:            1.25rem;
  --tk-space-6:            1.5rem;
  --tk-space-8:            2rem;
  --tk-space-10:           2.5rem;
  --tk-space-12:           3rem;
  --tk-space-16:           4rem;

  /* dimensions */
  --tk-size-1:             1rem;
  --tk-size-2:             1.5rem;
  --tk-size-3:             2rem;
  --tk-size-4:             2.5rem;
  --tk-size-5:             3rem;
  --tk-size-6:             3.5rem;
  --tk-size-touch:         2.75rem;
  --tk-control-sm:         2rem;
  --tk-control-md:         2.5rem;
  --tk-control-lg:         3rem;
  --tk-control-xl:         3.5rem;
  --tk-content-reading:    42rem;
  --tk-content-standard:   64rem;
  --tk-content-wide:       80rem;
  --tk-layout-columns:     4;
  --tk-layout-gutter:      1rem;
  --tk-layout-margin:      1rem;

  /* transitions */
  --tk-ease:               cubic-bezier(0.4, 0, 0.2, 1);
  --tk-duration:           120ms;
  --tk-duration-md:        200ms;
  --tk-transition:         var(--tk-duration) var(--tk-ease);
  --tk-transition-md:      var(--tk-duration-md) var(--tk-ease);
}

/* design tokens — dark */

[data-theme="dark"],
.tk-dark {
  --tk-brand:              #3B82F6;
  --tk-brand-hover:        #60A5FA;
  --tk-brand-active:       #93C5FD;
  --tk-brand-light:        #60A5FA;
  --tk-brand-tint:         #1E3A8A;
  --tk-brand-tint-deep:    #1E40AF;

  /* stay darker for white text */
  --tk-brand-btn:          #2563EB;
  --tk-brand-btn-hover:    #1D4ED8;
  --tk-brand-btn-active:   #1E40AF;

  --tk-text:               #F1F5F9;
  --tk-text-secondary:     #9FB3C8;   /* lightened for contrast on bgMuted */
  --tk-text-muted:         #94A3B8;
  --tk-text-disabled:      #475569;
  --tk-text-inverse:       #0F172A;
  --tk-text-on-brand:      #FFFFFF;

  --tk-bg:                 #0F172A;
  --tk-bg-subtle:          #1E293B;
  --tk-bg-muted:           #334155;
  --tk-bg-emphasis:        #475569;

  --tk-border:             #1E293B;
  --tk-border-strong:      #334155;
  --tk-border-focus:       rgba(96, 165, 250, 0.45);

  /* on-tint colors — light vals on dark tints */
  --tk-brand-on-tint:      #93C5FD;   /* on #1E3A8A — 6.9:1 */
  --tk-success-on-tint:    #6EE7B7;   /* on #064E3B — 8.1:1 */
  --tk-warning-on-tint:    #FDE68A;   /* on #451A03 — 7.4:1 */
  --tk-danger-on-tint:     #FCA5A5;   /* on #450A0A — 7.2:1 */
  --tk-info-on-tint:       #67E8F9;   /* on #083344 — 8.8:1 */

  --tk-success-tint:       #064E3B;
  --tk-success-text:       #6EE7B7;
  --tk-warning-tint:       #451A03;
  --tk-warning-text:       #FDE68A;
  --tk-danger-tint:        #450A0A;
  --tk-danger-text:        #FCA5A5;
  --tk-info-tint:          #083344;
  --tk-info-text:          #67E8F9;

  --tk-shadow-xs:          0 1px 2px rgba(0, 0, 0, 0.30);
  --tk-shadow-sm:          0 1px 3px rgba(0, 0, 0, 0.40), 0 1px 2px rgba(0, 0, 0, 0.20);
  --tk-shadow:             0 2px 6px rgba(0, 0, 0, 0.45), 0 1px 2px rgba(0, 0, 0, 0.20);
  --tk-shadow-md:          0 4px 12px rgba(0, 0, 0, 0.50), 0 2px 4px rgba(0, 0, 0, 0.20);
  --tk-shadow-lg:          0 8px 24px rgba(0, 0, 0, 0.55), 0 4px 8px rgba(0, 0, 0, 0.20);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --tk-brand:              #3B82F6;
    --tk-brand-hover:        #60A5FA;
    --tk-brand-active:       #93C5FD;
    --tk-brand-light:        #60A5FA;
    --tk-brand-tint:         #1E3A8A;
    --tk-brand-tint-deep:    #1E40AF;

    --tk-brand-btn:          #2563EB;
    --tk-brand-btn-hover:    #1D4ED8;
    --tk-brand-btn-active:   #1E40AF;

    --tk-text:               #F1F5F9;
    --tk-text-secondary:     #9FB3C8;
    --tk-text-muted:         #94A3B8;
    --tk-text-disabled:      #475569;
    --tk-text-inverse:       #0F172A;
    --tk-text-on-brand:      #FFFFFF;

    --tk-bg:                 #0F172A;
    --tk-bg-subtle:          #1E293B;
    --tk-bg-muted:           #334155;
    --tk-bg-emphasis:        #475569;

    --tk-border:             #1E293B;
    --tk-border-strong:      #334155;
    --tk-border-focus:       rgba(96, 165, 250, 0.45);

    --tk-brand-on-tint:      #93C5FD;
    --tk-success-on-tint:    #6EE7B7;
    --tk-warning-on-tint:    #FDE68A;
    --tk-danger-on-tint:     #FCA5A5;
    --tk-info-on-tint:       #67E8F9;

    --tk-success-tint:       #064E3B;
    --tk-success-text:       #6EE7B7;
    --tk-warning-tint:       #451A03;
    --tk-warning-text:       #FDE68A;
    --tk-danger-tint:        #450A0A;
    --tk-danger-text:        #FCA5A5;
    --tk-info-tint:          #083344;
    --tk-info-text:          #67E8F9;

    --tk-shadow-xs:          0 1px 2px rgba(0, 0, 0, 0.30);
    --tk-shadow-sm:          0 1px 3px rgba(0, 0, 0, 0.40), 0 1px 2px rgba(0, 0, 0, 0.20);
    --tk-shadow:             0 2px 6px rgba(0, 0, 0, 0.45), 0 1px 2px rgba(0, 0, 0, 0.20);
    --tk-shadow-md:          0 4px 12px rgba(0, 0, 0, 0.50), 0 2px 4px rgba(0, 0, 0, 0.20);
    --tk-shadow-lg:          0 8px 24px rgba(0, 0, 0, 0.55), 0 4px 8px rgba(0, 0, 0, 0.20);
  }
}

/* reset & base */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  tab-size: 4;
}

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

body {
  font-family: var(--tk-font);
  font-size: var(--tk-text-base);
  font-weight: 400;
  line-height: var(--tk-leading-normal);
  color: var(--tk-text);
  background-color: var(--tk-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg, video, canvas, audio, iframe {
  display: block;
  max-width: 100%;
}

input, button, textarea, select {
  font: inherit;
  color: inherit;
}

p, h1, h2, h3, h4, h5, h6 {
  overflow-wrap: break-word;
}

a {
  color: var(--tk-brand);
  text-decoration: none;
  transition: color var(--tk-transition);
}

a:hover {
  color: var(--tk-brand-hover);
  text-decoration: underline;
}

a:focus-visible {
  outline: 2.5px solid var(--tk-brand);
  outline-offset: 2px;
  border-radius: var(--tk-radius-xs);
}

/* icon system — lucide (lucide.dev) */

/* i[data-lucide] = before createIcons() runs
   svg[data-lucide] = after — lucide replaces <i> with <svg> in-place,
   copying all classes but resetting width/height to 24.
   both selectors must exist or the sizing breaks in production. */

.tk-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  vertical-align: middle;
  width: 1rem;
  height: 1rem;
}

i[data-lucide] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  vertical-align: middle;
  width: 1rem;
  height: 1rem;
}

/* after replacement, element is <svg> — override lucide's width="24" height="24" */
svg[data-lucide] {
  display: inline-block;
  vertical-align: middle;
  flex-shrink: 0;
  width: 1rem;
  height: 1rem;
  stroke: currentColor;
  fill: none;
  overflow: visible;
}

/* manual wrapper: <span class="tk-icon"><svg ...> */
.tk-icon svg {
  width: 100%;
  height: 100%;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* size scale — applies to wrapper, <i>, or replaced <svg> */
.tk-icon-xs  { width: 0.625rem; height: 0.625rem; }  /* 10px */
.tk-icon-sm  { width: 0.75rem;  height: 0.75rem;  }  /* 12px */
.tk-icon-md  { width: 1rem;     height: 1rem;     }  /* 16px */
.tk-icon-lg  { width: 1.25rem;  height: 1.25rem;  }  /* 20px */
.tk-icon-xl  { width: 1.5rem;   height: 1.5rem;   }  /* 24px */
.tk-icon-2xl { width: 2rem;     height: 2rem;     }  /* 32px */

/* icon box — square container with muted bg for feature icons, nav cats, cards, etc. */
.tk-icon-box {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 2rem;
  height: 2rem;
  border-radius: var(--tk-radius-sm);
  background-color: var(--tk-bg-muted);
  color: var(--tk-text-secondary);
}
.tk-icon-box-sm { width: 1.5rem;  height: 1.5rem;  border-radius: var(--tk-radius-xs); }
.tk-icon-box-lg { width: 2.5rem;  height: 2.5rem;  border-radius: var(--tk-radius);    }
.tk-icon-box-xl { width: 3rem;    height: 3rem;    border-radius: var(--tk-radius-md); }

/* stroke weight — set on <svg>, cascades to child paths via SVG inheritance */
.tk-icon-thin   { stroke-width: 1.5; }
.tk-icon-normal { stroke-width: 2;   }
.tk-icon-bold   { stroke-width: 2.5; }

/* SVG stroke lives on child path/line/etc elements — kill transitions on
   both the svg and all descendants so the icon snaps in sync with the text. */
.tk-btn svg[data-lucide],
.tk-btn svg[data-lucide] * {
  transition: none;
}

/* context sizing — reasonable defaults so consumers don't have to annotate every icon */
.tk-btn-xs i[data-lucide],
.tk-btn-xs svg[data-lucide] { width: 0.75rem;  height: 0.75rem;  }  /* 12px matches xs text */

.tk-btn-lg i[data-lucide],
.tk-btn-lg svg[data-lucide],
.tk-btn-xl i[data-lucide],
.tk-btn-xl svg[data-lucide] { width: 1.125rem; height: 1.125rem; }  /* 18px matches lg/xl text */

.tk-navbar-link i[data-lucide],
.tk-navbar-link svg[data-lucide] { width: 1rem; height: 1rem; }  /* 16px — explicit, never bleed */

.tk-dropdown-item i[data-lucide],
.tk-dropdown-item svg[data-lucide] { width: 1rem; height: 1rem; }

.tk-sidenav-item i[data-lucide],
.tk-sidenav-item svg[data-lucide] { width: 1rem; height: 1rem; }

.tk-alert-icon i[data-lucide],
.tk-alert-icon svg[data-lucide] { width: 1rem; height: 1rem; }

.tk-tab i[data-lucide],
.tk-tab svg[data-lucide] { width: 1rem; height: 1rem; }

.tk-modal-close i[data-lucide],
.tk-modal-close svg[data-lucide] { width: 1rem; height: 1rem; }

.tk-toast-close i[data-lucide],
.tk-toast-close svg[data-lucide] { width: 1rem; height: 1rem; }

.tk-alert-dismiss i[data-lucide],
.tk-alert-dismiss svg[data-lucide] { width: 1rem; height: 1rem; }

.tk-input-icon-left i[data-lucide],
.tk-input-icon-left svg[data-lucide],
.tk-input-icon-right i[data-lucide],
.tk-input-icon-right svg[data-lucide] { width: 0.875rem; height: 0.875rem; }  /* matches input font-size */

/* avatar icons scale with avatar size */
.tk-avatar i[data-lucide],
.tk-avatar svg[data-lucide]    { width: 1rem;    height: 1rem;    }
.tk-avatar-xs i[data-lucide],
.tk-avatar-xs svg[data-lucide] { width: 0.625rem; height: 0.625rem; }
.tk-avatar-sm i[data-lucide],
.tk-avatar-sm svg[data-lucide] { width: 0.75rem;  height: 0.75rem;  }
.tk-avatar-lg i[data-lucide],
.tk-avatar-lg svg[data-lucide] { width: 1.125rem; height: 1.125rem; }
.tk-avatar-xl i[data-lucide],
.tk-avatar-xl svg[data-lucide] { width: 1.25rem;  height: 1.25rem;  }
.tk-avatar-2xl i[data-lucide],
.tk-avatar-2xl svg[data-lucide] { width: 1.5rem;  height: 1.5rem;   }

/* typography */

.tk-h1 {
  font-size: var(--tk-text-4xl);
  font-weight: 800;
  line-height: var(--tk-leading-tight);
  letter-spacing: -0.03em;
  color: var(--tk-text);
}
.tk-h2 {
  font-size: var(--tk-text-3xl);
  font-weight: 700;
  line-height: var(--tk-leading-tight);
  letter-spacing: -0.025em;
  color: var(--tk-text);
}
.tk-h3 {
  font-size: var(--tk-text-2xl);
  font-weight: 700;
  line-height: var(--tk-leading-snug);
  letter-spacing: -0.02em;
  color: var(--tk-text);
}
.tk-h4 {
  font-size: var(--tk-text-xl);
  font-weight: 600;
  line-height: var(--tk-leading-snug);
  letter-spacing: -0.015em;
  color: var(--tk-text);
}
.tk-h5 {
  font-size: var(--tk-text-lg);
  font-weight: 600;
  line-height: var(--tk-leading-snug);
  color: var(--tk-text);
}
.tk-h6 {
  font-size: var(--tk-text-md);
  font-weight: 600;
  line-height: var(--tk-leading-snug);
  color: var(--tk-text);
}

.tk-lead {
  font-size: var(--tk-text-lg);
  font-weight: 400;
  line-height: var(--tk-leading-relaxed);
  color: var(--tk-text-secondary);
}

.tk-body {
  font-size: var(--tk-text-base);
  line-height: var(--tk-leading-relaxed);
  color: var(--tk-text);
}

.tk-body-sm {
  font-size: var(--tk-text-sm);
  line-height: var(--tk-leading-relaxed);
  color: var(--tk-text-secondary);
}

.tk-caption {
  font-size: var(--tk-text-xs);
  font-weight: 500;
  color: var(--tk-text-muted);
  letter-spacing: 0.02em;
}

.tk-overline {
  font-size: var(--tk-text-xs);
  font-weight: 700;
  color: var(--tk-text-muted);
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.tk-label {
  font-size: var(--tk-text-sm);
  font-weight: 500;
  color: var(--tk-text);
}

.tk-mono {
  font-family: var(--tk-font-mono);
  font-size: 0.9em;
}

code, .tk-code {
  font-family: var(--tk-font-mono);
  font-size: var(--tk-text-sm);
  background-color: var(--tk-bg-muted);
  color: var(--tk-brand-btn);
  padding: 0.15em 0.45em;
  border-radius: var(--tk-radius-xs);
}

pre {
  font-family: var(--tk-font-mono);
  font-size: var(--tk-text-sm);
  background-color: var(--tk-bg-subtle);
  border: 1px solid var(--tk-border);
  border-radius: var(--tk-radius);
  padding: var(--tk-space-4) var(--tk-space-5);
  overflow-x: auto;
  line-height: var(--tk-leading-relaxed);
}

pre code {
  background: none;
  padding: 0;
  color: var(--tk-text);
  font-size: inherit;
  border-radius: 0;
}

/* blockquote — surface bg, no border-left */
blockquote {
  position: relative;
  padding: var(--tk-space-4) var(--tk-space-5);
  margin: var(--tk-space-4) 0;
  color: var(--tk-text-secondary);
  font-style: italic;
  font-size: var(--tk-text-md);
  background-color: var(--tk-bg-muted);
  border-radius: var(--tk-radius-md);
}

hr {
  border: none;
  border-top: 1px solid var(--tk-border);
  margin: var(--tk-space-6) 0;
}

/* text utilities */
.tk-text-primary   { color: var(--tk-text); }
.tk-text-secondary { color: var(--tk-text-secondary); }
.tk-text-muted     { color: var(--tk-text-muted); }
.tk-text-brand     { color: var(--tk-brand); }
.tk-text-success   { color: var(--tk-success-text); }
.tk-text-warning   { color: var(--tk-warning-text); }
.tk-text-danger    { color: var(--tk-danger-text); }
.tk-text-info      { color: var(--tk-info-text); }

.tk-text-sm { font-size: var(--tk-text-sm); }

.tk-fw-normal    { font-weight: 400; }
.tk-fw-medium    { font-weight: 500; }
.tk-fw-semibold  { font-weight: 600; }
.tk-fw-bold      { font-weight: 700; }
.tk-fw-extrabold { font-weight: 800; }

.tk-text-left   { text-align: left; }
.tk-text-center { text-align: center; }
.tk-text-right  { text-align: right; }

/* layout */

.tk-container     { width: 100%; max-width: 1200px; margin-inline: auto; padding-inline: var(--tk-space-6); }
.tk-container-sm  { width: 100%; max-width: 640px;  margin-inline: auto; padding-inline: var(--tk-space-6); }
.tk-container-md  { width: 100%; max-width: 768px;  margin-inline: auto; padding-inline: var(--tk-space-6); }
.tk-container-lg  { width: 100%; max-width: 1024px; margin-inline: auto; padding-inline: var(--tk-space-6); }
.tk-container-xl  { width: 100%; max-width: 1280px; margin-inline: auto; padding-inline: var(--tk-space-6); }

.tk-section { padding-block: var(--tk-space-16); }

/* grid */
.tk-grid     { display: grid; gap: var(--tk-space-6); }
.tk-grid-1   { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.tk-grid-2   { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.tk-grid-3   { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.tk-grid-4   { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.tk-grid-auto{ grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }

@media (max-width: 640px) {
  .tk-grid-2,
  .tk-grid-3,
  .tk-grid-4 { grid-template-columns: 1fr; }
}
@media (min-width: 641px) and (max-width: 1024px) {
  .tk-grid-3,
  .tk-grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 1025px) and (max-width: 1440px) {
  .tk-container { max-width: 1200px; }
}

@media (min-width: 1441px) {
  .tk-container { max-width: 1360px; }
}

/* flex */
.tk-flex            { display: flex; }
.tk-flex-col        { display: flex; flex-direction: column; }
.tk-flex-wrap       { flex-wrap: wrap; }
.tk-items-start     { align-items: flex-start; }
.tk-items-center    { align-items: center; }
.tk-items-end       { align-items: flex-end; }
.tk-items-baseline  { align-items: baseline; }
.tk-items-stretch   { align-items: stretch; }
.tk-justify-start   { justify-content: flex-start; }
.tk-justify-center  { justify-content: center; }
.tk-justify-end     { justify-content: flex-end; }
.tk-justify-between { justify-content: space-between; }
.tk-justify-around  { justify-content: space-around; }
.tk-justify-evenly  { justify-content: space-evenly; }
.tk-gap-1  { gap: var(--tk-space-1); }
.tk-gap-2  { gap: var(--tk-space-2); }
.tk-gap-3  { gap: var(--tk-space-3); }
.tk-gap-4  { gap: var(--tk-space-4); }
.tk-gap-5  { gap: var(--tk-space-5); }
.tk-gap-6  { gap: var(--tk-space-6); }
.tk-gap-8  { gap: var(--tk-space-8); }
.tk-gap-10 { gap: var(--tk-space-10); }
.tk-gap-12 { gap: var(--tk-space-12); }
.tk-gap-16 { gap: var(--tk-space-16); }
.tk-flex-1 { flex: 1 1 0%; }

/* responsive stacking — components ship
   breakpoint-aware CSS internally, but authors composing their own layouts
   had no utility to force column stacking at a specific breakpoint. */
@media (max-width: 640px) {
  .tk-stack-mobile { flex-direction: column; }
}
@media (min-width: 641px) and (max-width: 1024px) {
  .tk-stack-tablet { flex-direction: column; }
}

/* buttons */

.tk-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--tk-space-2);
  padding: 0.5625rem 1.125rem;
  font-family: var(--tk-font);
  font-size: var(--tk-text-sm);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: 0;
  white-space: nowrap;
  border-radius: var(--tk-radius);
  border: 1.5px solid transparent;
  cursor: pointer;
  user-select: none;
  text-decoration: none;
  /* specific props only — color is intentionally omitted so text and icon
     snap together instantly; animating color independently causes icon
     stroke to lag or race the text. */
  transition:
    background-color var(--tk-transition),
    border-color var(--tk-transition);
  outline: none;
  position: relative;
}

.tk-btn:focus-visible {
  outline: 2.5px solid var(--tk-brand);
  outline-offset: 3px;
}

.tk-btn:active:not(:disabled) {
  filter: brightness(0.93);
}

.tk-btn:disabled,
.tk-btn[aria-disabled="true"] {
  opacity: 0.42;
  cursor: not-allowed;
  pointer-events: none;
}

/* primary */
.tk-btn-primary {
  background-color: var(--tk-brand-btn);
  border-color: var(--tk-brand-btn);
  color: var(--tk-text-on-brand);
}
.tk-btn-primary:hover:not(:disabled) {
  background-color: var(--tk-brand-btn-hover);
  border-color: var(--tk-brand-btn-hover);
  color: var(--tk-text-on-brand);
  text-decoration: none;
}
.tk-btn-primary:active:not(:disabled) {
  background-color: var(--tk-brand-btn-active);
  border-color: var(--tk-brand-btn-active);
  filter: none;
}

/* secondary */
.tk-btn-secondary {
  background-color: var(--tk-bg-muted);
  border-color: var(--tk-border-strong);
  color: var(--tk-text);
}

.tk-btn-secondary:hover:not(:disabled) {
  background-color: var(--tk-bg-emphasis);
  border-color: var(--tk-border-strong);
  color: var(--tk-text);
  text-decoration: none;
}

.tk-btn-secondary:active:not(:disabled) {
  background-color: var(--tk-border-strong);
  filter: none;
}

/* outline */
.tk-btn-outline {
  background-color: transparent;
  border-color: var(--tk-brand-btn);
  color: var(--tk-brand-btn);
}

.tk-btn-outline:hover:not(:disabled) {
  background-color: var(--tk-brand-btn);
  border-color: var(--tk-brand-btn);
  color: var(--tk-text-on-brand);
  text-decoration: none;
}

.tk-btn-outline:active:not(:disabled) {
  background-color: var(--tk-brand-btn-active);
  border-color: var(--tk-brand-btn-active);
  color: var(--tk-text-on-brand);
}

/* ghost */
.tk-btn-ghost {
  background-color: transparent;
  border-color: transparent;
  color: var(--tk-text-secondary);
}

.tk-btn-ghost:hover:not(:disabled) {
  background-color: var(--tk-bg-muted);
  color: var(--tk-text);
  text-decoration: none;
}

.tk-btn-ghost:active:not(:disabled) {
  background-color: var(--tk-bg-emphasis);
  filter: none;
}

/* danger */
.tk-btn-danger {
  background-color: var(--tk-danger-btn);
  border-color: var(--tk-danger-btn);
  color: #ffffff;
}

.tk-btn-danger:hover:not(:disabled) {
  background-color: var(--tk-danger-btn-hover);
  border-color: var(--tk-danger-btn-hover);
  color: #ffffff;
  text-decoration: none;
}

.tk-btn-danger:active:not(:disabled) {
  filter: brightness(0.9);
}

/* danger outline */
.tk-btn-danger-outline {
  background-color: transparent;
  border-color: var(--tk-danger);
  color: var(--tk-danger-text);
}

.tk-btn-danger-outline:hover:not(:disabled) {
  background-color: var(--tk-danger-tint);
  border-color: var(--tk-danger);
  color: var(--tk-danger-on-tint);
  text-decoration: none;
}

.tk-btn-danger-outline:active:not(:disabled) {
  background-color: var(--tk-danger-tint);
  filter: brightness(0.95);
}

/* inverse — white fill for use on dark/brand-colored backgrounds */
.tk-btn-inverse {
  background-color: #ffffff;
  border-color: #ffffff;
  color: var(--tk-brand-btn);
}

.tk-btn-inverse:hover:not(:disabled) {
  background-color: rgba(255, 255, 255, 0.88);
  border-color: rgba(255, 255, 255, 0.88);
  color: var(--tk-brand-btn);
  text-decoration: none;
}

.tk-btn-inverse:active:not(:disabled) {
  background-color: rgba(255, 255, 255, 0.78);
  filter: none;
}

/* success */
.tk-btn-success {
  background-color: var(--tk-success-btn);
  border-color: var(--tk-success-btn);
  color: #ffffff;
}

.tk-btn-success:hover:not(:disabled) {
  background-color: var(--tk-success-btn-hover);
  border-color: var(--tk-success-btn-hover);
  color: #ffffff;
  text-decoration: none;
}

.tk-btn-success:active:not(:disabled) {
  filter: brightness(0.9);
}

/* loading */

@keyframes tk-spin {
  to { transform: rotate(360deg); }
}

.tk-btn.is-loading,
.tk-btn-loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
  cursor: default;
}

.tk-btn.is-loading::after,
.tk-btn-loading::after {
  content: '';
  position: absolute;
  inset: 0;
  margin: auto;
  width: 1rem;
  height: 1rem;
  border: 2px solid;
  border-right-color: transparent;
  border-radius: 50%;
  animation: tk-spin 600ms linear infinite;
}

.tk-btn-primary.is-loading::after,
.tk-btn-danger.is-loading::after,
.tk-btn-success.is-loading::after {
  border-color: #ffffff;
  border-right-color: transparent;
}

.tk-btn-secondary.is-loading::after,
.tk-btn-ghost.is-loading::after {
  border-color: var(--tk-text);
  border-right-color: transparent;
}

.tk-btn-outline.is-loading::after {
  border-color: var(--tk-brand-btn);
  border-right-color: transparent;
}

.tk-btn-danger-outline.is-loading::after {
  border-color: var(--tk-danger);
  border-right-color: transparent;
}

.tk-btn-inverse.is-loading::after {
  border-color: var(--tk-brand-btn);
  border-right-color: transparent;
}

/* sizes */
.tk-btn-xs {
  padding: 0.3125rem 0.6875rem;
  font-size: var(--tk-text-xs);
  border-radius: var(--tk-radius-sm);
  gap: var(--tk-space-1);
}
.tk-btn-sm {
  padding: 0.4375rem 0.9375rem;
  font-size: var(--tk-text-sm);
  gap: var(--tk-space-2);
}
.tk-btn-lg {
  padding: 0.6875rem 1.5rem;
  font-size: var(--tk-text-md);
  border-radius: var(--tk-radius-md);
}
.tk-btn-xl {
  padding: 0.875rem 2rem;
  font-size: var(--tk-text-lg);
  border-radius: var(--tk-radius-md);
}

.tk-btn-full { width: 100%; }
.tk-btn-pill { border-radius: var(--tk-radius-full); }

/* icon-only button */
.tk-btn-icon {
  padding: 0.5625rem;
  aspect-ratio: 1;
  gap: 0;
}
.tk-btn-icon.tk-btn-xs { padding: 0.3125rem; }
.tk-btn-icon.tk-btn-sm { padding: 0.4375rem; }
.tk-btn-icon.tk-btn-lg { padding: 0.6875rem; }

/* button group */
.tk-btn-group { display: inline-flex; }
.tk-btn-group .tk-btn { border-radius: 0; }
.tk-btn-group .tk-btn:first-child { border-radius: var(--tk-radius) 0 0 var(--tk-radius); }
.tk-btn-group .tk-btn:last-child  { border-radius: 0 var(--tk-radius) var(--tk-radius) 0; }
.tk-btn-group .tk-btn + .tk-btn   { margin-left: -1.5px; }
.tk-btn-group .tk-btn:focus,
.tk-btn-group .tk-btn:hover       { z-index: 1; position: relative; }

/* form elements */

.tk-form-group {
  display: flex;
  flex-direction: column;
  gap: var(--tk-space-1);
}

.tk-form-label {
  font-size: var(--tk-text-sm);
  font-weight: 500;
  color: var(--tk-text);
}

.tk-form-label.tk-required::after {
  content: ' *';
  color: var(--tk-danger-text);
  font-weight: 700;
}

.tk-form-hint {
  font-size: var(--tk-text-xs);
  color: var(--tk-text-muted);
}

.tk-form-error {
  font-size: var(--tk-text-xs);
  color: var(--tk-danger-text);
  font-weight: 500;
}

.tk-form-warning {
  font-size: var(--tk-text-xs);
  color: var(--tk-warning-text);
  font-weight: 500;
}

.tk-form-success {
  font-size: var(--tk-text-xs);
  color: var(--tk-success-text);
  font-weight: 500;
}

/* input base */
.tk-input,
.tk-select,
.tk-textarea {
  display: block;
  width: 100%;
  padding: 0.5625rem 0.875rem;
  font-family: var(--tk-font);
  font-size: var(--tk-text-sm);
  font-weight: 400;
  line-height: var(--tk-leading-normal);
  color: var(--tk-text);
  background-color: var(--tk-bg);
  border: 1.5px solid var(--tk-border-strong);
  border-radius: var(--tk-radius);
  appearance: none;
  -webkit-appearance: none;
  transition: border-color var(--tk-transition), outline-width 110ms var(--tk-ease), outline-color 110ms var(--tk-ease);
  outline: 0 solid transparent;
  outline-offset: 0;
}

.tk-input::placeholder,
.tk-textarea::placeholder { color: var(--tk-text-muted); }

.tk-input:hover:not(:disabled),
.tk-select:hover:not(:disabled),
.tk-textarea:hover:not(:disabled) { border-color: var(--tk-brand); }

.tk-input:focus,
.tk-select:focus,
.tk-textarea:focus {
  border-color: var(--tk-brand);
  outline: 3px solid var(--tk-border-focus);
  outline-offset: 0;
}

.tk-input:disabled,
.tk-select:disabled,
.tk-textarea:disabled {
  background-color: var(--tk-bg-muted);
  color: var(--tk-text-disabled);
  cursor: not-allowed;
  border-color: var(--tk-border);
  opacity: 0.55;
}

/* states */
.tk-input-error,
.tk-input[aria-invalid="true"],
.tk-select[aria-invalid="true"],
.tk-textarea[aria-invalid="true"],
.tk-input:user-invalid,
.tk-select:user-invalid,
.tk-textarea:user-invalid {
  border-color: var(--tk-danger) !important;
}

.tk-input-error:focus,
.tk-input[aria-invalid="true"]:focus,
.tk-select[aria-invalid="true"]:focus,
.tk-textarea[aria-invalid="true"]:focus,
.tk-input:user-invalid:focus,
.tk-select:user-invalid:focus,
.tk-textarea:user-invalid:focus {
  outline-color: rgba(239, 68, 68, 0.3) !important;
}

.tk-input-success { border-color: var(--tk-success) !important; }
.tk-input-success:focus { outline-color: rgba(16, 185, 129, 0.3) !important; }

.tk-input-warning { border-color: var(--tk-warning) !important; }
.tk-input-warning:focus { outline-color: rgba(245, 158, 11, 0.3) !important; }

/* validating — quiet state while an async check (username availability,
   etc.) is in flight; pair with a spinner in .tk-input-icon-right */
.tk-input-validating { border-color: var(--tk-border-strong) !important; }

.tk-input-spinner {
  width: 0.875rem;
  height: 0.875rem;
  border: 1.5px solid var(--tk-border-strong);
  border-right-color: transparent;
  border-radius: 50%;
  animation: tk-spin 600ms linear infinite;
}

/* file input */
.tk-input[type="file"] {
  padding: 0.375rem 0.625rem;
  cursor: pointer;
}

.tk-input[type="file"]::file-selector-button {
  font-family: var(--tk-font);
  font-size: var(--tk-text-xs);
  font-weight: 600;
  padding: 0.25rem 0.625rem;
  margin-right: 0.75rem;
  border-radius: var(--tk-radius-sm);
  border: 1px solid var(--tk-border-strong);
  background: var(--tk-bg-muted);
  color: var(--tk-text);
  cursor: pointer;
  transition: background-color var(--tk-transition);
}

.tk-input[type="file"]::file-selector-button:hover {
  background: var(--tk-bg-emphasis);
}

/* dropzone — larger drag-and-drop file target. Hidden native input covers
   the whole box so it stays keyboard/click accessible; tailku-ui.js only
   adds the .tk-dragover visual class and forwards dropped files. */
.tk-dropzone {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--tk-space-1);
  padding: var(--tk-space-8) var(--tk-space-5);
  border: 1.5px dashed var(--tk-border-strong);
  border-radius: var(--tk-radius-md);
  background-color: var(--tk-bg-subtle);
  text-align: center;
  cursor: pointer;
  transition: border-color var(--tk-transition), background-color var(--tk-transition);
}

.tk-dropzone:hover,
.tk-dropzone.tk-dragover {
  border-color: var(--tk-brand);
  background-color: var(--tk-brand-tint);
}

.tk-dropzone input[type="file"] {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.tk-dropzone-icon {
  color: var(--tk-text-muted);
  margin-bottom: var(--tk-space-2);
  transition: color var(--tk-transition);
}
.tk-dropzone:hover .tk-dropzone-icon,
.tk-dropzone.tk-dragover .tk-dropzone-icon { color: var(--tk-brand); }

.tk-dropzone-title { font-size: var(--tk-text-sm); font-weight: 600; color: var(--tk-text); }
.tk-dropzone-hint { font-size: var(--tk-text-xs); color: var(--tk-text-muted); }

/* selected-file list */
.tk-file-list {
  display: flex;
  flex-direction: column;
  gap: var(--tk-space-2);
  margin-top: var(--tk-space-3);
}

.tk-file-item {
  display: flex;
  align-items: center;
  gap: var(--tk-space-3);
  padding: var(--tk-space-2) var(--tk-space-3);
  border: 1px solid var(--tk-border);
  border-radius: var(--tk-radius-sm);
  background-color: var(--tk-bg);
}

.tk-file-item-icon { color: var(--tk-text-muted); flex-shrink: 0; display: flex; }

.tk-file-item-name {
  font-size: var(--tk-text-sm);
  font-weight: 500;
  color: var(--tk-text);
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tk-file-item-size { font-size: var(--tk-text-xs); color: var(--tk-text-muted); flex-shrink: 0; }

.tk-file-item-remove {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  flex-shrink: 0;
  background: none;
  border: none;
  border-radius: var(--tk-radius-xs);
  color: var(--tk-text-muted);
  cursor: pointer;
  transition: background-color var(--tk-transition), color var(--tk-transition);
}
.tk-file-item-remove:hover { background-color: var(--tk-danger-tint); color: var(--tk-danger-on-tint); }
.tk-file-item-remove:focus-visible { outline: 2px solid var(--tk-brand); outline-offset: 1px; }

/* sizes */
.tk-input-sm, .tk-select-sm {
  padding: 0.375rem 0.75rem;
  font-size: var(--tk-text-xs);
  border-radius: var(--tk-radius-sm);
}
.tk-input-lg, .tk-select-lg {
  padding: 0.6875rem 1rem;
  font-size: var(--tk-text-base);
  border-radius: var(--tk-radius-md);
}

.tk-textarea { resize: vertical; min-height: 100px; }

/* select arrow */
.tk-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394A3B8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  padding-right: 2.5rem;
  cursor: pointer;
}

/* input with icon */
.tk-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}
.tk-input-wrap .tk-input { padding-left: 2.5rem; }
.tk-input-wrap.tk-has-right .tk-input { padding-left: 0.875rem; padding-right: 2.5rem; }

.tk-input-icon-left,
.tk-input-icon-right {
  position: absolute;
  color: var(--tk-text-muted);
  pointer-events: none;
  display: flex;
  align-items: center;
}
.tk-input-icon-left  { left:  0.75rem; }
.tk-input-icon-right { right: 0.75rem; }

/* input group */
.tk-input-group { display: flex; }
.tk-input-group .tk-input { border-radius: 0; flex: 1; }
.tk-input-group .tk-btn { border-radius: 0; }
.tk-input-group > :first-child { border-radius: var(--tk-radius) 0 0 var(--tk-radius) !important; }
.tk-input-group > :last-child  { border-radius: 0 var(--tk-radius) var(--tk-radius) 0 !important; }
.tk-input-group > * + * { margin-left: -1.5px; }
.tk-input-group .tk-input:focus,
.tk-input-group .tk-btn:focus,
.tk-input-group .tk-btn:hover { z-index: 1; }

.tk-input-addon {
  display: inline-flex;
  align-items: center;
  padding: 0 0.875rem;
  background-color: var(--tk-bg-subtle);
  border: 1.5px solid var(--tk-border-strong);
  color: var(--tk-text-secondary);
  font-size: var(--tk-text-sm);
  white-space: nowrap;
}

/* checkbox & radio */
.tk-check-group { display: flex; flex-direction: column; gap: var(--tk-space-2); }

.tk-check-item {
  display: flex;
  align-items: center;
  gap: var(--tk-space-2);
  cursor: pointer;
  user-select: none;
  padding-block: 0.1875rem;
  min-height: 1.5rem;
}

.tk-checkbox,
.tk-radio {
  width: 1.125rem;
  height: 1.125rem;
  appearance: none;
  -webkit-appearance: none;
  background-color: var(--tk-bg);
  border: 1.5px solid var(--tk-border-strong);
  cursor: pointer;
  transition: background-color var(--tk-transition), border-color var(--tk-transition), outline-width 110ms var(--tk-ease);
  flex-shrink: 0;
  display: grid;
  place-items: center;
  outline: 0 solid var(--tk-brand);
  outline-offset: 2px;
}

.tk-checkbox { border-radius: var(--tk-radius-xs); }
.tk-radio    { border-radius: var(--tk-radius-full); }

.tk-checkbox:hover:not(:disabled),
.tk-radio:hover:not(:disabled) { border-color: var(--tk-brand-btn); }

.tk-checkbox:focus-visible,
.tk-radio:focus-visible { outline-width: 2.5px; }

.tk-checkbox:disabled,
.tk-radio:disabled { opacity: 0.55; cursor: not-allowed; }

.tk-checkbox:checked,
.tk-radio:checked {
  background-color: var(--tk-brand-btn);
  border-color: var(--tk-brand-btn);
}

.tk-checkbox:indeterminate {
  background-color: var(--tk-brand-btn);
  border-color: var(--tk-brand-btn);
}

.tk-checkbox:indeterminate::before {
  content: '';
  width: 0.5rem;
  height: 2px;
  background-color: #ffffff;
  border-radius: 1px;
}

@keyframes tk-check-in {
  from { transform: rotate(-45deg) translateY(-1px) scale(0); opacity: 0; }
  to   { transform: rotate(-45deg) translateY(-1px) scale(1); opacity: 1; }
}

@keyframes tk-dot-in {
  from { transform: scale(0); opacity: 0; }
  to   { transform: scale(1); opacity: 1; }
}

.tk-checkbox:checked::before {
  content: '';
  width: 0.5625rem;
  height: 0.3125rem;
  border-left: 2px solid white;
  border-bottom: 2px solid white;
  transform: rotate(-45deg) translateY(-1px);
  animation: tk-check-in 160ms cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

.tk-radio:checked::before {
  content: '';
  width: 0.375rem;
  height: 0.375rem;
  background-color: white;
  border-radius: 50%;
  animation: tk-dot-in 150ms cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

.tk-check-label {
  font-size: var(--tk-text-sm);
  color: var(--tk-text);
}

/* switch */
.tk-switch-wrap {
  display: inline-flex;
  align-items: center;
  gap: var(--tk-space-2);
  cursor: pointer;
  user-select: none;
}

.tk-switch {
  position: relative;
  width: 2.25rem;
  height: 1.25rem;
  appearance: none;
  -webkit-appearance: none;
  background-color: var(--tk-bg-emphasis);
  border-radius: var(--tk-radius-full);
  cursor: pointer;
  transition: background-color var(--tk-transition), outline-width 110ms var(--tk-ease);
  flex-shrink: 0;
  border: none;
  outline: 0 solid var(--tk-brand);
  outline-offset: 2px;
}

.tk-switch::before {
  content: '';
  position: absolute;
  top: 0.1875rem;
  left: 0.1875rem;
  width: 0.875rem;
  height: 0.875rem;
  background: white;
  border-radius: 50%;
  transition: transform var(--tk-transition);
}

.tk-switch:checked { background-color: var(--tk-brand-btn); }
.tk-switch:checked::before { transform: translateX(1rem); }
.tk-switch:focus-visible { outline-width: 2.5px; }

.tk-switch:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.tk-switch-wrap:has(.tk-switch:disabled) { cursor: not-allowed; }

.tk-switch-label { font-size: var(--tk-text-sm); color: var(--tk-text); }

/* range slider */
.tk-range {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 1.25rem;
  padding-block: 0;
  background: transparent;
  cursor: pointer;
}
.tk-range::-webkit-slider-runnable-track {
  height: 4px;
  border-radius: var(--tk-radius-full);
  background: var(--tk-border-strong);
}
.tk-range::-moz-range-track {
  height: 4px;
  border-radius: var(--tk-radius-full);
  background: var(--tk-border-strong);
}
.tk-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 1.125rem;
  height: 1.125rem;
  margin-top: -0.4375rem;
  border-radius: var(--tk-radius-full);
  background: var(--tk-brand-btn);
  border: 3px solid var(--tk-bg);
  box-shadow: 0 0 0 1.5px var(--tk-brand-btn);
  transition: box-shadow var(--tk-transition), background-color var(--tk-transition);
}
.tk-range::-moz-range-thumb {
  width: 1.125rem;
  height: 1.125rem;
  border-radius: var(--tk-radius-full);
  background: var(--tk-brand-btn);
  border: 3px solid var(--tk-bg);
  box-shadow: 0 0 0 1.5px var(--tk-brand-btn);
  transition: box-shadow var(--tk-transition), background-color var(--tk-transition);
}
.tk-range:hover::-webkit-slider-thumb,
.tk-range:focus-visible::-webkit-slider-thumb { background: var(--tk-brand-btn-hover); }
.tk-range:hover::-moz-range-thumb,
.tk-range:focus-visible::-moz-range-thumb { background: var(--tk-brand-btn-hover); }
.tk-range:focus-visible { outline: none; }
.tk-range:focus-visible::-webkit-slider-thumb { box-shadow: 0 0 0 1.5px var(--tk-brand-btn), 0 0 0 5px var(--tk-border-focus); }
.tk-range:focus-visible::-moz-range-thumb { box-shadow: 0 0 0 1.5px var(--tk-brand-btn), 0 0 0 5px var(--tk-border-focus); }
.tk-range:disabled { opacity: 0.5; cursor: not-allowed; }

.tk-range-wrap { display: flex; flex-direction: column; gap: var(--tk-space-2); }
.tk-range-control { position: relative; padding-top: 1.75rem; }
.tk-range-control .tk-range { position: relative; z-index: 2; }
.tk-range-fill { position: absolute; left: 0; bottom: 0.5rem; height: 4px; border-radius: var(--tk-radius-full); background-color: var(--tk-brand-btn); pointer-events: none; z-index: 1; }
.tk-range-value { position: absolute; top: 0; transform: translateX(-50%); min-width: 2rem; padding: 0.125rem 0.375rem; border-radius: var(--tk-radius-xs); background-color: var(--tk-text); color: var(--tk-bg); font-size: var(--tk-text-xs); font-weight: 700; line-height: 1.35; text-align: center; white-space: nowrap; }
.tk-range:disabled ~ .tk-range-value,
.tk-range-control:has(.tk-range:disabled) .tk-range-fill { opacity: 0.5; }
.tk-range-labels { display: flex; justify-content: space-between; font-size: var(--tk-text-xs); color: var(--tk-text-muted); }

/* number stepper */
.tk-stepper {
  display: inline-flex;
  align-items: stretch;
  border: 1.5px solid var(--tk-border-strong);
  border-radius: var(--tk-radius);
  overflow: hidden;
  min-height: 2.75rem;
  transition: border-color var(--tk-transition), box-shadow var(--tk-transition);
}
.tk-stepper:focus-within { border-color: var(--tk-brand); box-shadow: 0 0 0 3px var(--tk-border-focus); }
.tk-stepper.tk-disabled { opacity: 0.62; }
.tk-stepper-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  background: var(--tk-bg-muted);
  border: none;
  color: var(--tk-text);
  cursor: pointer;
  transition: background-color var(--tk-transition);
}
.tk-stepper-btn:hover:not(:disabled) { background: var(--tk-brand-tint); color: var(--tk-brand-on-tint); }
.tk-stepper-btn:active:not(:disabled) { background: var(--tk-bg-emphasis); }
.tk-stepper-btn:focus-visible { outline: 2.5px solid var(--tk-brand); outline-offset: -2px; }
.tk-stepper-btn:disabled { opacity: 0.42; cursor: not-allowed; }
.tk-stepper-btn:first-child { border-right: 1.5px solid var(--tk-border-strong); }
.tk-stepper-btn:last-child { border-left: 1.5px solid var(--tk-border-strong); }
.tk-stepper-input {
  width: 3.5rem;
  border: none;
  text-align: center;
  font-family: var(--tk-font);
  font-size: var(--tk-text-sm);
  color: var(--tk-text);
  background: var(--tk-bg);
  -moz-appearance: textfield;
}
.tk-stepper-input::-webkit-outer-spin-button,
.tk-stepper-input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.tk-stepper-input:focus { outline: none; background: var(--tk-bg-subtle); }

/* previous / next navigation */
.tk-form-nav { display: flex; align-items: center; justify-content: space-between; gap: var(--tk-space-3); padding-top: var(--tk-space-4); border-top: 1px solid var(--tk-border); }
.tk-btn-back,
.tk-btn-next { min-width: 7rem; justify-content: center; }
.tk-btn-back i,
.tk-btn-back svg { order: -1; }
.tk-btn-next i,
.tk-btn-next svg { order: 2; }
@media (max-width: 639px) { .tk-form-nav { position: sticky; bottom: 0; margin-inline: calc(var(--tk-space-4) * -1); padding: var(--tk-space-3) var(--tk-space-4); background-color: var(--tk-bg); } .tk-btn-back, .tk-btn-next { flex: 1; min-height: 2.75rem; } }

/* segmented control */
.tk-segmented {
  display: inline-flex;
  padding: 3px;
  background: var(--tk-bg-muted);
  border-radius: var(--tk-radius);
  gap: 2px;
}
.tk-segmented-item {
  position: relative;
  display: inline-flex;
}
.tk-segmented-input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
  pointer-events: none;
}
.tk-segmented-label {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--tk-space-2);
  padding: 0.375rem 0.875rem;
  font-size: var(--tk-text-sm);
  font-weight: 500;
  color: var(--tk-text-secondary);
  border-radius: var(--tk-radius-sm);
  cursor: pointer;
  white-space: nowrap;
  transition: background-color var(--tk-transition), color var(--tk-transition);
}
.tk-segmented-label:hover { color: var(--tk-text); }
.tk-segmented-input:checked + .tk-segmented-label {
  background: var(--tk-bg);
  color: var(--tk-text);
  box-shadow: var(--tk-shadow-xs);
}
.tk-segmented-input:focus-visible + .tk-segmented-label { outline: 2.5px solid var(--tk-brand); outline-offset: 1px; }
.tk-segmented-input:disabled + .tk-segmented-label { opacity: 0.42; cursor: not-allowed; }

/* pagination */
.tk-pagination {
  display: flex;
  align-items: center;
  gap: var(--tk-space-1);
  list-style: none;
}
.tk-pagination-item { display: flex; }
.tk-pagination-link {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 2.25rem;
  height: 2.25rem;
  padding-inline: var(--tk-space-2);
  border-radius: var(--tk-radius-sm);
  font-size: var(--tk-text-sm);
  font-weight: 500;
  color: var(--tk-text-secondary);
  cursor: pointer;
  transition: background-color var(--tk-transition), color var(--tk-transition);
}
.tk-pagination-link:hover { background: var(--tk-bg-muted); color: var(--tk-text); text-decoration: none; }
.tk-pagination-link:focus-visible { outline: 2.5px solid var(--tk-brand); outline-offset: 1px; }
.tk-pagination-link.tk-active,
.tk-pagination-link.is-active {
  background: var(--tk-brand-tint);
  color: var(--tk-brand-on-tint);
}
.tk-pagination-link.tk-disabled,
.tk-pagination-link[aria-disabled="true"] {
  opacity: 0.42;
  cursor: not-allowed;
  pointer-events: none;
}
.tk-pagination-ellipsis {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 2.25rem;
  height: 2.25rem;
  color: var(--tk-text-muted);
}

/* cards */

.tk-card {
  display: flex;
  flex-direction: column;
  background-color: var(--tk-bg);
  border: 1px solid var(--tk-border);
  border-radius: var(--tk-radius-md);
  overflow: hidden;
  transition: border-color var(--tk-transition);
}

/* .tk-card-body itself is defined further down, alongside header/footer —
   flex: 1 1 auto is set there so the footer always sits flush at the
   bottom of the card, which matters most when a grid stretches cards in a
   row to equal height and body content lengths differ. */

/* clickable — color change only, no shadow */
.tk-card-interactive,
.tk-card-link {
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
}

.tk-card-interactive:hover,
.tk-card-link:hover {
  border-color: var(--tk-border-strong);
  text-decoration: none;
  color: inherit;
}

.tk-card-interactive:focus-visible,
.tk-card-link:focus-visible {
  outline: 2.5px solid var(--tk-brand);
  outline-offset: 2px;
}

.tk-card-elevated {
  border-color: var(--tk-border-strong);
  box-shadow: none;
}

.tk-card-flat {
  background-color: var(--tk-bg-subtle);
  border-color: transparent;
}

.tk-card-brand {
  background-color: var(--tk-brand-tint);
  border-color: rgba(37, 99, 235, 0.15);
}
[data-theme="dark"] .tk-card-brand,
.tk-dark .tk-card-brand {
  border-color: rgba(30, 58, 138, 0.6);
}

.tk-card-header {
  padding: var(--tk-space-4) var(--tk-space-5);
  border-bottom: 1px solid var(--tk-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--tk-space-2) var(--tk-space-3);
}

.tk-card-title {
  font-size: var(--tk-text-base);
  font-weight: 600;
  color: var(--tk-text);
  line-height: var(--tk-leading-snug);
}

.tk-card-subtitle {
  font-size: var(--tk-text-sm);
  color: var(--tk-text-secondary);
  margin-top: var(--tk-space-1);
}

.tk-card-body { padding: var(--tk-space-5); flex: 1 1 auto; }

.tk-card-footer {
  padding: var(--tk-space-4) var(--tk-space-5);
  border-top: 1px solid var(--tk-border);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: var(--tk-space-3);
  background-color: var(--tk-bg-subtle);
}

/* stat card */
.tk-stat-card {
  background-color: var(--tk-bg);
  border: 1px solid var(--tk-border);
  border-radius: var(--tk-radius-md);
  padding: var(--tk-space-5);
}

.tk-stat-label {
  font-size: var(--tk-text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--tk-text-muted);
  margin-bottom: var(--tk-space-2);
}

.tk-stat-value {
  font-size: var(--tk-text-3xl);
  font-weight: 800;
  color: var(--tk-text);
  letter-spacing: -0.03em;
  line-height: 1;
}

.tk-stat-delta {
  font-size: var(--tk-text-xs);
  font-weight: 600;
  margin-top: var(--tk-space-2);
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
}

.tk-stat-delta-up   { color: var(--tk-success-text); }
.tk-stat-delta-down { color: var(--tk-danger-text); }

/* badges & tags */

.tk-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.6rem;
  font-size: var(--tk-text-xs);
  font-weight: 600;
  border-radius: var(--tk-radius-full);
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.tk-badge-sm {
  font-size: 0.6875rem;
  padding: 0.125rem 0.45rem;
}

.tk-badge-lg {
  font-size: var(--tk-text-sm);
  padding: 0.25rem 0.75rem;
}

.tk-badge-brand   { background-color: var(--tk-brand-tint);   color: var(--tk-brand-on-tint); }
.tk-badge-success { background-color: var(--tk-success-tint); color: var(--tk-success-on-tint); }
.tk-badge-warning { background-color: var(--tk-warning-tint); color: var(--tk-warning-on-tint); }
.tk-badge-danger  { background-color: var(--tk-danger-tint);  color: var(--tk-danger-on-tint); }
.tk-badge-info    { background-color: var(--tk-info-tint);    color: var(--tk-info-on-tint); }
.tk-badge-muted   { background-color: var(--tk-bg-muted);     color: var(--tk-text-secondary); }
.tk-badge-dark    { background-color: var(--tk-text);         color: var(--tk-bg); }

/* status dot */
.tk-badge.tk-badge-dot::before {
  content: '';
  display: block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: currentColor;
  flex-shrink: 0;
}

/* tag (larger, square-ish) */
.tk-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--tk-space-1);
  padding: 0.3125rem 0.6875rem;
  font-size: var(--tk-text-sm);
  font-weight: 500;
  border-radius: var(--tk-radius-sm);
  border: 1px solid var(--tk-border-strong);
  background-color: var(--tk-bg-muted);
  color: var(--tk-text-secondary);
  cursor: default;
}

.tk-tag-brand {
  background-color: var(--tk-brand-tint);
  border-color: rgba(37, 99, 235, 0.2);
  color: var(--tk-brand-on-tint);
}

.tk-tag-success {
  background-color: var(--tk-success-tint);
  border-color: rgba(16, 185, 129, 0.25);
  color: var(--tk-success-on-tint);
}

.tk-tag-warning {
  background-color: var(--tk-warning-tint);
  border-color: rgba(245, 158, 11, 0.25);
  color: var(--tk-warning-on-tint);
}

.tk-tag-danger {
  background-color: var(--tk-danger-tint);
  border-color: rgba(239, 68, 68, 0.25);
  color: var(--tk-danger-on-tint);
}

.tk-tag-info {
  background-color: var(--tk-info-tint);
  border-color: rgba(6, 182, 212, 0.25);
  color: var(--tk-info-on-tint);
}

.tk-tag-close {
  position: relative;
  cursor: pointer;
  color: currentColor;
  opacity: 0.55;
  transition: opacity var(--tk-transition);
  line-height: 1;
  font-size: 0.75em;
  padding: 1px 1px 1px 2px;
  border-radius: 2px;
  display: flex;
  align-items: center;
}
/* invisible hit-area extension — keeps the visual glyph tiny while the
   tappable/clickable region meets a reasonable minimum target size */
.tk-tag-close::before {
  content: '';
  position: absolute;
  inset: -6px;
}
.tk-tag-close:hover { opacity: 1; }
.tk-tag-close:focus-visible { outline: 2px solid var(--tk-brand); outline-offset: 1px; opacity: 1; }

/* badge / pill / tag group — prevents overcrowded rows of small status
   elements. Wrap onto multiple lines rather than compressing gaps, cap
   label width so long text ellipsizes instead of stretching the pill, and
   provide a "+N" overflow marker for groups with more items than fit. */
.tk-badge-group,
.tk-tag-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--tk-space-2);
}

.tk-badge-group > .tk-badge,
.tk-tag-group > .tk-tag {
  max-width: 12rem;
}

.tk-badge-group > .tk-badge > span,
.tk-tag-group > .tk-tag > span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Explicit overflow marker for the Nth-and-beyond items in a group. Author
   supplies the count; this only provides the visual/semantic treatment. */
.tk-badge-overflow {
  background-color: var(--tk-bg-muted);
  color: var(--tk-text-secondary);
  cursor: default;
}

/* alerts */

.tk-alert {
  display: flex;
  align-items: flex-start;
  gap: var(--tk-space-3);
  padding: var(--tk-space-4);
  border-radius: var(--tk-radius-md);
  border: 1px solid transparent;
  font-size: var(--tk-text-sm);
  line-height: var(--tk-leading-relaxed);
}

.tk-alert-icon {
  flex-shrink: 0;
  margin-top: 1px;
  display: flex;
  align-items: center;
}

.tk-alert-content { flex: 1; }

.tk-alert-title {
  font-weight: 600;
  margin-bottom: var(--tk-space-1);
}

.tk-alert-brand {
  background-color: var(--tk-brand-tint);
  border-color: rgba(37, 99, 235, 0.2);
  color: var(--tk-brand-on-tint);
}
[data-theme="dark"] .tk-alert-brand,
.tk-dark .tk-alert-brand {
  border-color: rgba(30, 58, 138, 0.5);
}

.tk-alert-success {
  background-color: var(--tk-success-tint);
  border-color: rgba(16, 185, 129, 0.2);
  color: var(--tk-success-on-tint);
}

.tk-alert-warning {
  background-color: var(--tk-warning-tint);
  border-color: rgba(245, 158, 11, 0.2);
  color: var(--tk-warning-on-tint);
}

.tk-alert-danger {
  background-color: var(--tk-danger-tint);
  border-color: rgba(239, 68, 68, 0.2);
  color: var(--tk-danger-on-tint);
}

.tk-alert-info {
  background-color: var(--tk-info-tint);
  border-color: rgba(6, 182, 212, 0.2);
  color: var(--tk-info-on-tint);
}

.tk-alert-dismiss {
  cursor: pointer;
  opacity: 0.55;
  transition: opacity var(--tk-transition), background-color var(--tk-transition);
  background: none;
  border: none;
  color: currentColor;
  padding: 0.375rem;
  margin: -0.375rem -0.375rem -0.375rem 0;
  line-height: 1;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  border-radius: var(--tk-radius-xs);
}
.tk-alert-dismiss:hover { opacity: 1; background-color: rgba(0, 0, 0, 0.06); }
.tk-alert-dismiss:focus-visible { outline: 2px solid currentColor; outline-offset: 1px; opacity: 1; }

/* navigation */

.tk-navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--tk-space-6);
  height: 60px;
  background-color: var(--tk-bg);
  border-bottom: 1px solid var(--tk-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.tk-navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--tk-space-2);
  font-size: var(--tk-text-base);
  font-weight: 700;
  color: var(--tk-text);
  text-decoration: none;
  letter-spacing: -0.015em;
}
.tk-navbar-brand:hover { color: var(--tk-text); text-decoration: none; }

.tk-navbar-nav {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
}

.tk-navbar-link {
  display: flex;
  align-items: center;
  gap: var(--tk-space-1);
  min-height: 2.25rem;
  padding: 0.5rem 0.75rem;
  font-size: var(--tk-text-sm);
  font-weight: 500;
  color: var(--tk-text-secondary);
  text-decoration: none;
  border-radius: var(--tk-radius-sm);
  transition: background-color var(--tk-transition), color var(--tk-transition);
}
.tk-navbar-link:hover { background-color: var(--tk-bg-muted); color: var(--tk-text); text-decoration: none; }
.tk-navbar-link:focus-visible { outline: 2.5px solid var(--tk-brand); outline-offset: 2px; }
.tk-navbar-link.tk-active,
.tk-navbar-link.is-active {
  background-color: var(--tk-brand-tint);
  color: var(--tk-brand-on-tint);
  font-weight: 600;
}

.tk-navbar-actions { display: flex; align-items: center; gap: var(--tk-space-2); }

.tk-navbar-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--tk-text);
  padding: var(--tk-space-2);
  border-radius: var(--tk-radius);
  cursor: pointer;
  transition: background-color var(--tk-transition);
}

.tk-navbar-toggle:hover { background-color: var(--tk-bg-muted); }
.tk-navbar-toggle:focus-visible { outline: 2.5px solid var(--tk-brand); outline-offset: 2px; }

@media (max-width: 640px) {
  .tk-navbar-toggle { display: inline-flex; }
}

/* sidebar nav */
.tk-sidenav { display: flex; flex-direction: column; gap: 2px; padding: var(--tk-space-4); }

.tk-sidenav-item {
  display: flex;
  align-items: center;
  gap: var(--tk-space-3);
  padding: 0.5rem 0.75rem;
  font-size: var(--tk-text-sm);
  font-weight: 500;
  color: var(--tk-text-secondary);
  text-decoration: none;
  border-radius: var(--tk-radius);
  transition: background-color var(--tk-transition), color var(--tk-transition);
}

.tk-sidenav-item:hover { background-color: var(--tk-bg-muted); color: var(--tk-text); text-decoration: none; }
.tk-sidenav-item:focus-visible { outline: 2.5px solid var(--tk-brand); outline-offset: 2px; }
.tk-sidenav-item.tk-active,
.tk-sidenav-item.is-active {
  background-color: var(--tk-brand-tint);
  color: var(--tk-brand-on-tint);
  font-weight: 600;
}

.tk-sidenav-icon { color: var(--tk-text-muted); flex-shrink: 0; transition: color var(--tk-transition); }
.tk-sidenav-item:hover .tk-sidenav-icon { color: var(--tk-brand); }
.tk-sidenav-item.tk-active .tk-sidenav-icon,
.tk-sidenav-item.is-active .tk-sidenav-icon { color: var(--tk-brand-on-tint); }

.tk-sidenav-section {
  padding: var(--tk-space-3) 0.75rem var(--tk-space-1);
  font-size: var(--tk-text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--tk-text-muted);
  margin-top: var(--tk-space-2);
}

/* sidebar */

.tk-sidebar {
  display: flex;
  flex-direction: column;
  width: 240px;
  min-height: 100dvh;
  background: var(--tk-bg);
  border-right: 1px solid var(--tk-border);
  transition: width 240ms cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
  flex-shrink: 0;
}

.tk-sidebar--collapsed { width: 56px; }

/* sidebar header */

.tk-sidebar-header {
  display: flex;
  align-items: center;
  height: 60px;
  padding: 0 var(--tk-space-4);
  border-bottom: 1px solid var(--tk-border);
  flex-shrink: 0;
  gap: var(--tk-space-3);
  overflow: hidden;
}

/* collapsed rail is 56px — a row layout can't fit a logo + title + toggle
   button side by side at that width, so stack instead of clipping content
   out of view (that clipping is what silently ate the header before). */
.tk-sidebar--collapsed .tk-sidebar-header {
  flex-direction: column;
  height: auto;
  min-height: 60px;
  justify-content: center;
  padding: var(--tk-space-3) var(--tk-space-2);
  gap: var(--tk-space-2);
}

.tk-sidebar-header-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  max-width: 100%;
  overflow: hidden;
}

.tk-sidebar-header-title {
  font-size: var(--tk-text-sm);
  font-weight: 700;
  color: var(--tk-text);
  white-space: nowrap;
  overflow: hidden;
  transition: opacity 180ms ease;
}

.tk-sidebar--collapsed .tk-sidebar-header-title {
  display: none;
}

.tk-sidebar-header-toggle {
  margin-left: auto;
  flex-shrink: 0;
}

.tk-sidebar--collapsed .tk-sidebar-header-toggle { margin-left: 0; }

/* sidebar nav body */

.tk-sidebar-nav {
  flex: 1;
  overflow: hidden auto;
  padding: var(--tk-space-3) 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.tk-sidebar-section { padding: 0; }
.tk-sidebar-section + .tk-sidebar-section { margin-top: var(--tk-space-3); }

.tk-sidebar-section-label {
  padding: var(--tk-space-2) var(--tk-space-4);
  font-size: var(--tk-text-xs);
  font-weight: 700;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--tk-text-muted);
  white-space: nowrap;
  overflow: hidden;
  transition: opacity 180ms ease;
  margin: 0;
}

.tk-sidebar--collapsed .tk-sidebar-section-label { opacity: 0; }

/* sidebar item */

.tk-sidebar-item {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--tk-space-3);
  padding: var(--tk-space-2) var(--tk-space-4);
  margin: 1px var(--tk-space-2);
  border-radius: var(--tk-radius);
  font-size: var(--tk-text-sm);
  font-weight: 500;
  color: var(--tk-text-secondary);
  text-decoration: none;
  background: transparent;
  border: none;
  cursor: pointer;
  width: calc(100% - var(--tk-space-4));
  text-align: left;
  transition: background-color var(--tk-transition), color var(--tk-transition);
  white-space: nowrap;
  overflow: hidden;
  min-height: 2.25rem;
}

.tk-sidebar-item:hover {
  background: var(--tk-bg-muted);
  color: var(--tk-text);
  text-decoration: none;
}

.tk-sidebar-item:focus-visible {
  outline: 2.5px solid var(--tk-brand);
  outline-offset: -2px;
}

.tk-sidebar-item.is-active,
.tk-sidebar-item.tk-active {
  background: var(--tk-brand-tint);
  color: var(--tk-brand-on-tint);
  font-weight: 600;
}

[data-theme="dark"] .tk-sidebar-item.is-active,
[data-theme="dark"] .tk-sidebar-item.tk-active {
  background: rgba(37, 99, 235, 0.18);
  color: var(--tk-brand-active);
}

.tk-sidebar--collapsed .tk-sidebar-item {
  justify-content: center;
  padding: var(--tk-space-2);
  width: calc(100% - var(--tk-space-4));
}

.tk-sidebar-item-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1.125rem;
  height: 1.125rem;
  flex-shrink: 0;
}

.tk-sidebar-item-label {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: opacity 180ms ease;
}

.tk-sidebar--collapsed .tk-sidebar-item-label { opacity: 0; pointer-events: none; }

/* sidebar badge */

.tk-sidebar-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.125rem;
  height: 1.125rem;
  padding: 0 var(--tk-space-1);
  border-radius: var(--tk-radius-full);
  font-size: 0.6875rem;
  font-weight: 700;
  background: var(--tk-brand-btn);
  color: #ffffff;
  flex-shrink: 0;
  transition: opacity 180ms ease;
}

.tk-sidebar--collapsed .tk-sidebar-badge { opacity: 0; }

/* sidebar divider */

.tk-sidebar-divider {
  height: 1px;
  background: var(--tk-border);
  margin: var(--tk-space-3) var(--tk-space-4);
  flex-shrink: 0;
}

/* sidebar footer */

.tk-sidebar-footer {
  padding: var(--tk-space-3);
  border-top: 1px solid var(--tk-border);
  flex-shrink: 0;
}

.tk-sidebar-user {
  display: flex;
  align-items: center;
  gap: var(--tk-space-3);
  padding: var(--tk-space-2);
  border-radius: var(--tk-radius);
  cursor: pointer;
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
  transition: background-color var(--tk-transition);
  overflow: hidden;
}

.tk-sidebar-user:hover { background: var(--tk-bg-muted); }

.tk-sidebar-user-avatar {
  width: 2rem;
  height: 2rem;
  border-radius: var(--tk-radius-full);
  background: var(--tk-brand-tint);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--tk-text-xs);
  font-weight: 700;
  color: var(--tk-brand-on-tint);
  flex-shrink: 0;
  overflow: hidden;
}

.tk-sidebar-user-info {
  flex: 1;
  overflow: hidden;
  transition: opacity 180ms ease;
}

.tk-sidebar--collapsed .tk-sidebar-user-info { opacity: 0; pointer-events: none; }

.tk-sidebar-user-name {
  font-size: var(--tk-text-sm);
  font-weight: 600;
  color: var(--tk-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin: 0;
}

.tk-sidebar-user-role {
  font-size: var(--tk-text-xs);
  color: var(--tk-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin: 0;
}

.tk-sidebar-user-chevron { transition: opacity 180ms ease; }
.tk-sidebar--collapsed .tk-sidebar-user-chevron { opacity: 0; }

/* sidebar tooltip */

.tk-sidebar-item[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  left: calc(100% + var(--tk-space-3));
  top: 50%;
  transform: translateY(-50%);
  background: var(--tk-text);
  color: var(--tk-bg);
  font-size: var(--tk-text-xs);
  font-weight: 600;
  padding: var(--tk-space-1) var(--tk-space-3);
  border-radius: var(--tk-radius);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 140ms ease;
  z-index: 300;
}

.tk-sidebar--collapsed .tk-sidebar-item[data-tooltip]:hover::after { opacity: 1; }

/* breadcrumb */
.tk-breadcrumb { display: flex; align-items: center; gap: var(--tk-space-1); flex-wrap: wrap; list-style: none; }

.tk-breadcrumb-item {
  display: flex;
  align-items: center;
  gap: var(--tk-space-1);
  font-size: var(--tk-text-sm);
  color: var(--tk-text-secondary);
}
.tk-breadcrumb-item a {
  display: inline-flex;
  align-items: center;
  min-height: 1.75rem;
  padding: 0.25rem var(--tk-space-2);
  margin: -0.25rem calc(var(--tk-space-2) * -1);
  border-radius: var(--tk-radius-xs);
  color: var(--tk-text-secondary);
  font-weight: 500;
  text-decoration: none;
  transition: background-color var(--tk-transition), color var(--tk-transition);
}
.tk-breadcrumb-item a:hover { color: var(--tk-brand); background-color: var(--tk-bg-muted); }
.tk-breadcrumb-item a:focus-visible { outline: 2.5px solid var(--tk-brand); outline-offset: 1px; }
.tk-breadcrumb-item:last-child { color: var(--tk-text); font-weight: 600; }
.tk-breadcrumb-item:not(:last-child)::after {
  content: '/';
  color: var(--tk-text-muted);
  font-size: var(--tk-text-xs);
  margin-left: var(--tk-space-1);
}

/* tabs */
.tk-tabs {
  display: flex;
  border-bottom: 1px solid var(--tk-border);
  position: relative;
}

/* Slide variant — opt in with .tk-tabs-slide. tailku-ui.js auto-wires an
   indicator bar that animates under the active tab on click, and makes
   the strip itself drag-scrollable when tabs overflow its width. */
.tk-tabs-slide {
  overflow-x: auto;
  scrollbar-width: none;
  cursor: grab;
}
.tk-tabs-slide::-webkit-scrollbar { display: none; }
.tk-tabs-slide.tk-dragging { cursor: grabbing; user-select: none; scroll-snap-type: none; }
.tk-tabs-slide .tk-tab.tk-active,
.tk-tabs-slide .tk-tab.is-active { border-bottom-color: transparent; }

.tk-tabs-indicator {
  position: absolute;
  bottom: -1px;
  left: 0;
  height: 2px;
  width: 0;
  background-color: var(--tk-brand-btn);
  transition: transform var(--tk-transition-md), width var(--tk-transition-md);
  pointer-events: none;
}
.tk-tabs-slide.tk-dragging .tk-tabs-indicator { transition: none; }

.tk-tab {
  display: inline-flex;
  align-items: center;
  gap: var(--tk-space-2);
  padding: 0.625rem 1rem;
  font-family: var(--tk-font);
  font-size: var(--tk-text-sm);
  font-weight: 500;
  color: var(--tk-text-secondary);
  border: none;
  border-bottom: 2px solid transparent;
  background: none;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--tk-transition), border-color var(--tk-transition);
}
.tk-tab:hover { color: var(--tk-text); }
.tk-tab:focus-visible { outline: 2.5px solid var(--tk-brand); outline-offset: -2px; }
.tk-tab.tk-active,
.tk-tab.is-active {
  color: var(--tk-brand-btn);
  border-bottom-color: var(--tk-brand-btn);
  font-weight: 600;
}

/* Pill tabs */
.tk-tabs-pill {
  border-bottom: none;
  gap: 3px;
  background-color: var(--tk-bg-muted);
  padding: 3px;
  border-radius: var(--tk-radius);
  display: inline-flex;
}
.tk-tabs-pill .tk-tab { border: none; border-radius: var(--tk-radius-sm); padding: 0.375rem 0.875rem; }
.tk-tabs-pill .tk-tab.tk-active,
.tk-tabs-pill .tk-tab.is-active {
  background-color: var(--tk-bg);
  color: var(--tk-text);
  font-weight: 600;
}

/* table */

.tk-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--tk-border);
  border-radius: var(--tk-radius-md);
}

.tk-table { width: 100%; border-collapse: collapse; font-size: var(--tk-text-sm); }

.tk-table th {
  text-align: left;
  font-size: var(--tk-text-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--tk-text-secondary);
  padding: 0.6875rem var(--tk-space-4);
  background-color: var(--tk-bg-subtle);
  border-bottom: 1px solid var(--tk-border);
  white-space: nowrap;
}

.tk-table td {
  padding: var(--tk-space-3) var(--tk-space-4);
  color: var(--tk-text);
  border-bottom: 1px solid var(--tk-border);
  vertical-align: middle;
}

.tk-table tbody tr:last-child td { border-bottom: none; }
.tk-table tbody tr { transition: background-color var(--tk-transition); }
.tk-table tbody tr:hover td { background-color: var(--tk-bg-subtle); }

.tk-table-striped tbody tr:nth-child(odd) td { background-color: var(--tk-bg-subtle); }

.tk-table tr.is-selected td,
.tk-table tr.tk-active td {
  background-color: var(--tk-brand-tint);
  color: var(--tk-brand-on-tint);
}

.tk-table-compact th { padding: 0.4375rem var(--tk-space-3); }
.tk-table-compact td { padding: 0.4375rem var(--tk-space-3); font-size: var(--tk-text-xs); }

/* avatar */

.tk-avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background-color: var(--tk-brand-tint);
  color: var(--tk-brand-on-tint);
  font-weight: 700;
  font-size: var(--tk-text-sm);
  overflow: hidden;
  flex-shrink: 0;
  width: 2.25rem;
  height: 2.25rem;
  letter-spacing: -0.01em;
}

.tk-avatar img { width: 100%; height: 100%; object-fit: cover; }

.tk-avatar-xs  { width: 1.5rem;  height: 1.5rem;  font-size: var(--tk-text-xs); }
.tk-avatar-sm  { width: 2rem;    height: 2rem;    font-size: var(--tk-text-xs); }
.tk-avatar-lg  { width: 2.75rem; height: 2.75rem; font-size: var(--tk-text-base); }
.tk-avatar-xl  { width: 3.5rem;  height: 3.5rem;  font-size: var(--tk-text-lg); }
.tk-avatar-2xl { width: 4.5rem;  height: 4.5rem;  font-size: var(--tk-text-xl); }

.tk-avatar-square { border-radius: var(--tk-radius); }

/* Avatar group */
.tk-avatar-group { display: flex; }
.tk-avatar-group .tk-avatar { border: 2px solid var(--tk-bg); margin-left: -0.5rem; }
.tk-avatar-group .tk-avatar:first-child { margin-left: 0; }

/* With status dot */
.tk-avatar-wrap { position: relative; display: inline-block; }

.tk-avatar-status {
  position: absolute;
  bottom: 1px;
  right: 1px;
  width: 0.625rem;
  height: 0.625rem;
  border-radius: 50%;
  border: 2px solid var(--tk-bg);
}

.tk-status-online  { background-color: var(--tk-success); }
.tk-status-offline { background-color: var(--tk-bg-emphasis); }
.tk-status-busy    { background-color: var(--tk-danger); }
.tk-status-away    { background-color: var(--tk-warning); }

/* progress */

.tk-progress {
  width: 100%;
  height: 6px;
  background-color: var(--tk-bg-muted);
  border-radius: var(--tk-radius-full);
  overflow: hidden;
}

.tk-progress-bar {
  height: 100%;
  background-color: var(--tk-brand-btn);
  border-radius: var(--tk-radius-full);
  transition: width var(--tk-transition-md);
}

.tk-progress-sm { height: 3px; }
.tk-progress-md { height: 8px; }
.tk-progress-lg { height: 12px; }

.tk-progress-bar-success { background-color: var(--tk-success); }
.tk-progress-bar-warning { background-color: var(--tk-warning); }
.tk-progress-bar-danger  { background-color: var(--tk-danger); }

/* Labeled progress */
.tk-progress-wrap { display: flex; flex-direction: column; gap: var(--tk-space-1); }
.tk-progress-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: var(--tk-space-1); }
.tk-progress-label { font-size: var(--tk-text-sm); font-weight: 500; color: var(--tk-text); }
.tk-progress-value { font-size: var(--tk-text-sm); font-weight: 600; color: var(--tk-text-secondary); }

/* divider */

.tk-divider {
  display: flex;
  align-items: center;
  gap: var(--tk-space-3);
  color: var(--tk-text-muted);
  font-size: var(--tk-text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin: var(--tk-space-6) 0;
}
.tk-divider::before,
.tk-divider::after { content: ''; flex: 1; height: 1px; background-color: var(--tk-border); }

.tk-divider-plain {
  display: block;
  height: 1px;
  background-color: var(--tk-border);
  border: none;
  margin: var(--tk-space-6) 0;
}

.tk-divider-vertical {
  display: inline-block;
  width: 1px;
  height: 1.25rem;
  background-color: var(--tk-border);
  margin: 0 var(--tk-space-2);
  vertical-align: middle;
  flex-shrink: 0;
}

/* modal */

.tk-modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.55);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--tk-space-4);
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  /* visibility removes closed modals from the tab order and the
     accessibility tree; the delayed transition keeps the fade-out */
  visibility: hidden;
  transition: opacity var(--tk-transition-md), visibility 0s linear var(--tk-duration-md);
}

.tk-modal-overlay.tk-open {
  opacity: 1;
  pointer-events: auto;
  visibility: visible;
  transition: opacity var(--tk-transition-md);
}

.tk-modal {
  background-color: var(--tk-bg);
  border-radius: var(--tk-radius-lg);
  box-shadow: var(--tk-shadow-lg);
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  transform: translateY(10px);
  transition: transform var(--tk-transition-md);
  border: 1px solid var(--tk-border);
}

.tk-modal-overlay.tk-open .tk-modal { transform: translateY(0); }

.tk-modal-sm { max-width: 360px; }
.tk-modal-md { max-width: 560px; }
.tk-modal-lg { max-width: 720px; }
.tk-modal-xl { max-width: 960px; }

.tk-modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: var(--tk-space-5) var(--tk-space-6);
  border-bottom: 1px solid var(--tk-border);
  gap: var(--tk-space-4);
}

.tk-modal-title { font-size: var(--tk-text-lg); font-weight: 700; color: var(--tk-text); letter-spacing: -0.01em; }

.tk-modal-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  background: none;
  border: none;
  border-radius: var(--tk-radius);
  color: var(--tk-text-muted);
  cursor: pointer;
  transition: background-color var(--tk-transition), color var(--tk-transition);
  flex-shrink: 0;
}
.tk-modal-close:hover { background-color: var(--tk-bg-muted); color: var(--tk-text); }
.tk-modal-close:focus-visible { outline: 2.5px solid var(--tk-brand); outline-offset: 2px; }

.tk-modal-body { padding: var(--tk-space-6); }

.tk-modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--tk-space-3);
  padding: var(--tk-space-4) var(--tk-space-6);
  border-top: 1px solid var(--tk-border);
  background-color: var(--tk-bg-subtle);
  border-radius: 0 0 var(--tk-radius-lg) var(--tk-radius-lg);
}

/* Modals with 2-3 footer buttons (Cancel + Save, or Cancel + Schedule +
   Confirm) had no narrow-viewport handling at all -- the flex-end row
   just stayed horizontal and cramped/overflowed on a phone-width screen
   instead of becoming the full-width stacked buttons every other button
   group in this design system already gets below 640px (see
   .tk-form-actions / .tk-btn-back / .tk-btn-next above). */
@media (max-width: 640px) {
  .tk-modal-footer {
    flex-direction: column-reverse;
    align-items: stretch;
  }
  .tk-modal-footer > .tk-btn {
    width: 100%;
  }
}

/* drawer — same overlay/open mechanism as modal (tk.drawer.open/close,
   [data-tk-close], Escape, backdrop click), but slides in from an edge
   and pins to it rather than centering. Direction via .tk-drawer-left/
   -right/-top/-bottom (default: right). Size via .tk-drawer-sm/-md/-lg
   on left/right drawers (cross-axis is full-bleed on top/bottom). */

.tk-drawer-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.55);
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
  transition: opacity var(--tk-transition-md), visibility 0s linear var(--tk-duration-md);
}

.tk-drawer-overlay.tk-open { opacity: 1; pointer-events: auto; visibility: visible; transition: opacity var(--tk-transition-md); }

.tk-drawer {
  position: fixed;
  display: flex;
  flex-direction: column;
  background-color: var(--tk-bg);
  box-shadow: var(--tk-shadow-lg);
  border: 1px solid var(--tk-border);
  transition: transform var(--tk-transition-md);
}

.tk-drawer-right,
.tk-drawer-left {
  top: 0;
  bottom: 0;
  width: 100%;
  max-width: 400px;
}
.tk-drawer-right { right: 0; border-width: 0 0 0 1px; transform: translateX(100%); }
.tk-drawer-left   { left: 0;  border-width: 0 1px 0 0; transform: translateX(-100%); }
.tk-drawer-overlay.tk-open .tk-drawer-right,
.tk-drawer-overlay.tk-open .tk-drawer-left { transform: translateX(0); }

.tk-drawer-top,
.tk-drawer-bottom {
  left: 0;
  right: 0;
  height: auto;
  max-height: 80vh;
}
.tk-drawer-top    { top: 0;    border-width: 0 0 1px; transform: translateY(-100%); }
.tk-drawer-bottom { bottom: 0; border-width: 1px 0 0; transform: translateY(100%); }
.tk-drawer-overlay.tk-open .tk-drawer-top,
.tk-drawer-overlay.tk-open .tk-drawer-bottom { transform: translateY(0); }

.tk-drawer-sm { max-width: 320px; }
.tk-drawer-md { max-width: 400px; }
.tk-drawer-lg { max-width: 560px; }

.tk-drawer-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: var(--tk-space-5) var(--tk-space-6);
  border-bottom: 1px solid var(--tk-border);
  gap: var(--tk-space-4);
  flex-shrink: 0;
}

.tk-drawer-title { font-size: var(--tk-text-lg); font-weight: 700; color: var(--tk-text); letter-spacing: -0.01em; }

.tk-drawer-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  background: none;
  border: none;
  border-radius: var(--tk-radius);
  color: var(--tk-text-muted);
  cursor: pointer;
  transition: background-color var(--tk-transition), color var(--tk-transition);
  flex-shrink: 0;
}
.tk-drawer-close:hover { background-color: var(--tk-bg-muted); color: var(--tk-text); }
.tk-drawer-close:focus-visible { outline: 2.5px solid var(--tk-brand); outline-offset: 2px; }

.tk-drawer-body { padding: var(--tk-space-6); overflow-y: auto; flex: 1 1 auto; }

.tk-drawer-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--tk-space-3);
  padding: var(--tk-space-4) var(--tk-space-6);
  border-top: 1px solid var(--tk-border);
  background-color: var(--tk-bg-subtle);
  flex-shrink: 0;
}

/* dropdown */

.tk-dropdown { position: relative; display: inline-block; }

.tk-dropdown-menu {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  min-width: 180px;
  background-color: var(--tk-bg);
  border: 1px solid var(--tk-border);
  border-radius: var(--tk-radius);
  box-shadow: var(--tk-shadow-md);
  padding: 4px 0;
  z-index: 150;
  opacity: 0;
  transform: translateY(-6px);
  pointer-events: none;
  transition: opacity var(--tk-transition), transform var(--tk-transition);
}
.tk-dropdown-menu.tk-right { left: auto; right: 0; }
.tk-dropdown.tk-open .tk-dropdown-menu { opacity: 1; transform: translateY(0); pointer-events: auto; }

.tk-dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--tk-space-2);
  padding: 0.4375rem var(--tk-space-4);
  font-family: var(--tk-font);
  font-size: var(--tk-text-sm);
  font-weight: 500;
  color: var(--tk-text);
  text-decoration: none;
  cursor: pointer;
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  transition: background-color var(--tk-transition), color var(--tk-transition);
}
.tk-dropdown-item:hover { background-color: var(--tk-bg-muted); color: var(--tk-text); text-decoration: none; }
.tk-dropdown-item:focus-visible { outline: 2px solid var(--tk-brand); outline-offset: -2px; background-color: var(--tk-bg-muted); }
.tk-dropdown-item.tk-active { background-color: var(--tk-brand-tint); color: var(--tk-brand-on-tint); }
.tk-dropdown-item.tk-danger { color: var(--tk-danger-text); }
.tk-dropdown-item.tk-danger:hover { background-color: var(--tk-danger-tint); color: var(--tk-danger-on-tint); }

.tk-dropdown-divider { height: 1px; background-color: var(--tk-border); margin: 4px 0; }
.tk-dropdown-label {
  padding: 0.375rem var(--tk-space-4) 0.25rem;
  font-size: var(--tk-text-xs);
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--tk-text-muted);
}

/* custom selectbox — progressive enhancement over a real Tailku select.
   tailku-ui.js hides the native element (keeping
   it in the DOM so name/value still submit with the form) and builds
   this custom listbox from its <option>s. Add data-tk-native to retain
   the platform control. */

.tk-selectbox-wrap { position: relative; }

.tk-selectbox-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--tk-space-2);
  width: 100%;
  padding: 0.5625rem 0.875rem;
  font-family: var(--tk-font);
  font-size: var(--tk-text-sm);
  font-weight: 400;
  line-height: var(--tk-leading-normal);
  color: var(--tk-text);
  background-color: var(--tk-bg);
  border: 1.5px solid var(--tk-border-strong);
  border-radius: var(--tk-radius);
  cursor: pointer;
  transition: border-color var(--tk-transition), outline-width 110ms var(--tk-ease), outline-color 110ms var(--tk-ease);
  outline: 0 solid transparent;
  outline-offset: 0;
}
.tk-selectbox-trigger:hover { border-color: var(--tk-brand); }
.tk-selectbox-trigger:focus-visible,
.tk-selectbox-wrap.tk-open .tk-selectbox-trigger {
  border-color: var(--tk-brand);
  outline: 3px solid var(--tk-border-focus);
}

.tk-selectbox-trigger-value { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; text-align: left; }
.tk-selectbox-trigger[data-placeholder="true"] .tk-selectbox-trigger-value { color: var(--tk-text-muted); }

.tk-selectbox-trigger i[data-lucide],
.tk-selectbox-trigger svg[data-lucide] {
  width: 1rem;
  height: 1rem;
  color: var(--tk-text-muted);
  flex-shrink: 0;
  transition: transform var(--tk-transition);
}
.tk-selectbox-wrap.tk-open .tk-selectbox-trigger i[data-lucide],
.tk-selectbox-wrap.tk-open .tk-selectbox-trigger svg[data-lucide] { transform: rotate(180deg); }

/* the menu is portaled to <body> by tailku-ui.js so it cannot be
   clipped by overflow containers or displaced by transformed ancestors;
   position is computed from the trigger rect on open */
.tk-selectbox-menu {
  position: fixed;
  top: 0;
  left: 0;
  max-height: 260px;
  overflow-y: auto;
  background-color: var(--tk-bg);
  border: 1px solid var(--tk-border);
  border-radius: var(--tk-radius);
  box-shadow: var(--tk-shadow-md);
  padding: 4px 0;
  z-index: 350;
  opacity: 0;
  transform: translateY(-6px);
  pointer-events: none;
  transition: opacity var(--tk-transition), transform var(--tk-transition);
}
.tk-selectbox-menu.tk-open { opacity: 1; transform: translateY(0); pointer-events: auto; }

.tk-selectbox-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--tk-space-2);
  padding: 0.4375rem var(--tk-space-4);
  font-size: var(--tk-text-sm);
  font-weight: 500;
  color: var(--tk-text);
  cursor: pointer;
  transition: background-color var(--tk-transition), color var(--tk-transition);
}
.tk-selectbox-option:hover,
.tk-selectbox-option.tk-focused { background-color: var(--tk-bg-muted); }
.tk-selectbox-option.tk-selected { background-color: var(--tk-brand-tint); color: var(--tk-brand-on-tint); font-weight: 600; }
.tk-selectbox-option[aria-disabled="true"] { opacity: 0.42; cursor: not-allowed; }
.tk-selectbox-option i[data-lucide],
.tk-selectbox-option svg[data-lucide] { width: 0.875rem; height: 0.875rem; flex-shrink: 0; }

/* sizes — tailku-ui.js mirrors .tk-select-sm / .tk-select-lg on the
   select onto .tk-selectbox-sm / .tk-selectbox-lg on the generated wrap */
.tk-selectbox-sm .tk-selectbox-trigger {
  padding: 0.375rem 0.75rem;
  font-size: var(--tk-text-xs);
  border-radius: var(--tk-radius-sm);
}
.tk-selectbox-sm .tk-selectbox-option {
  padding: 0.3125rem var(--tk-space-3);
  font-size: var(--tk-text-xs);
}
.tk-selectbox-lg .tk-selectbox-trigger {
  padding: 0.6875rem 1rem;
  font-size: var(--tk-text-base);
  border-radius: var(--tk-radius-md);
}
.tk-selectbox-lg .tk-selectbox-option {
  padding: 0.5625rem var(--tk-space-4);
  font-size: var(--tk-text-base);
}

/* custom time picker — progressive enhancement over a real
   <input type="time" class="tk-timepicker">. Skip the class to keep the
   official native time input instead. */

.tk-timepicker-wrap { position: relative; }

.tk-timepicker-trigger {
  display: flex;
  align-items: center;
  gap: var(--tk-space-2);
  width: 100%;
  padding: 0.5625rem 0.875rem;
  font-family: var(--tk-font);
  font-size: var(--tk-text-sm);
  color: var(--tk-text);
  background-color: var(--tk-bg);
  border: 1.5px solid var(--tk-border-strong);
  border-radius: var(--tk-radius);
  cursor: pointer;
  transition: border-color var(--tk-transition), outline-width 110ms var(--tk-ease), outline-color 110ms var(--tk-ease);
  outline: 0 solid transparent;
}
.tk-timepicker-trigger:hover { border-color: var(--tk-brand); }
.tk-timepicker-trigger:focus-visible,
.tk-timepicker-wrap.tk-open .tk-timepicker-trigger {
  border-color: var(--tk-brand);
  outline: 3px solid var(--tk-border-focus);
}
.tk-timepicker-trigger i[data-lucide],
.tk-timepicker-trigger svg[data-lucide] { width: 1rem; height: 1rem; color: var(--tk-text-muted); flex-shrink: 0; }
.tk-timepicker-trigger-value { flex: 1; text-align: left; }
.tk-timepicker-trigger[data-placeholder="true"] .tk-timepicker-trigger-value { color: var(--tk-text-muted); }

.tk-timepicker-panel {
  position: fixed;
  top: 0;
  left: 0;
  display: flex;
  flex-direction: column;
  background-color: var(--tk-bg);
  border: 1px solid var(--tk-border);
  border-radius: var(--tk-radius);
  box-shadow: var(--tk-shadow-md);
  z-index: 350;
  opacity: 0;
  transform: translateY(-6px);
  pointer-events: none;
  transition: opacity var(--tk-transition), transform var(--tk-transition);
  overflow: hidden;
}
.tk-timepicker-panel.tk-open { opacity: 1; transform: translateY(0); pointer-events: auto; }
.tk-timepicker-actions,
.tk-datepicker-actions { display: flex; align-items: center; justify-content: space-between; gap: var(--tk-space-2); padding: var(--tk-space-2); border-bottom: 1px solid var(--tk-border); }
.tk-timepicker-columns { display: flex; }

.tk-timepicker-col {
  display: flex;
  flex-direction: column;
  width: 3.25rem;
  max-height: 200px;
  overflow-y: auto;
  scrollbar-width: thin;
  padding: 4px 0;
}
.tk-timepicker-col + .tk-timepicker-col { border-left: 1px solid var(--tk-border); }

.tk-timepicker-option {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.375rem 0;
  font-size: var(--tk-text-sm);
  font-weight: 500;
  color: var(--tk-text);
  cursor: pointer;
  transition: background-color var(--tk-transition), color var(--tk-transition);
}
.tk-timepicker-option:hover { background-color: var(--tk-bg-muted); }
.tk-timepicker-option.tk-selected { background-color: var(--tk-brand-tint); color: var(--tk-brand-on-tint); font-weight: 700; }

/* date picker */
.tk-datepicker-wrap { position: relative; }
.tk-datepicker-trigger { display: flex; align-items: center; gap: var(--tk-space-2); width: 100%; min-height: 2.625rem; padding: 0.5625rem 0.875rem; font-family: var(--tk-font); font-size: var(--tk-text-sm); color: var(--tk-text); background-color: var(--tk-bg); border: 1.5px solid var(--tk-border-strong); border-radius: var(--tk-radius); cursor: pointer; outline: 0 solid transparent; transition: border-color var(--tk-transition), outline-width 110ms var(--tk-ease), outline-color 110ms var(--tk-ease); }
.tk-datepicker-trigger:hover { border-color: var(--tk-brand); }
.tk-datepicker-trigger:focus-visible,
.tk-datepicker-wrap.tk-open .tk-datepicker-trigger { border-color: var(--tk-brand); outline: 3px solid var(--tk-border-focus); }
.tk-datepicker-trigger i,
.tk-datepicker-trigger svg { width: 1rem; height: 1rem; color: var(--tk-text-muted); flex-shrink: 0; }
.tk-datepicker-trigger-value { flex: 1; text-align: left; }
.tk-datepicker-trigger[data-placeholder="true"] .tk-datepicker-trigger-value { color: var(--tk-text-muted); }
.tk-datepicker-panel { position: fixed; top: 0; left: 0; width: min(19rem, calc(100vw - 1rem)); padding: var(--tk-space-2); background-color: var(--tk-bg); border: 1px solid var(--tk-border); border-radius: var(--tk-radius-md); box-shadow: var(--tk-shadow-md); z-index: 350; opacity: 0; transform: translateY(-6px); pointer-events: none; transition: opacity var(--tk-transition), transform var(--tk-transition); }
.tk-datepicker-panel.tk-open { opacity: 1; transform: translateY(0); pointer-events: auto; }
.tk-datepicker-header { display: grid; grid-template-columns: 2.25rem 1fr 2.25rem; align-items: center; gap: var(--tk-space-2); margin-bottom: var(--tk-space-2); }
.tk-datepicker-month { text-align: center; font-size: var(--tk-text-sm); }
.tk-datepicker-nav { display: grid; place-items: center; width: 2.25rem; height: 2.25rem; padding: 0; color: var(--tk-text); background: transparent; border: 0; border-radius: var(--tk-radius-sm); font: inherit; font-size: 1.5rem; cursor: pointer; }
.tk-datepicker-nav:hover { background-color: var(--tk-bg-muted); }
.tk-datepicker-nav:focus-visible { outline: 2px solid var(--tk-brand); outline-offset: 1px; }
.tk-datepicker-weekdays,
.tk-datepicker-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 2px; }
.tk-datepicker-weekdays span { padding-block: var(--tk-space-1); color: var(--tk-text-muted); font-size: var(--tk-text-xs); font-weight: 700; text-align: center; }
.tk-datepicker-day { display: grid; place-items: center; aspect-ratio: 1; min-width: 2rem; padding: 0; color: var(--tk-text); background: transparent; border: 0; border-radius: var(--tk-radius-sm); font: inherit; font-size: var(--tk-text-sm); cursor: pointer; }
.tk-datepicker-day:hover:not(:disabled),
.tk-datepicker-day:focus-visible { background-color: var(--tk-bg-muted); outline: 2px solid var(--tk-brand); outline-offset: -2px; }
.tk-datepicker-day.tk-outside { color: var(--tk-text-muted); }
.tk-datepicker-day.tk-today { box-shadow: inset 0 0 0 1px var(--tk-brand); }
.tk-datepicker-day.tk-selected { color: var(--tk-brand-on-solid); background-color: var(--tk-brand-btn); font-weight: 700; }
.tk-datepicker-day:disabled { opacity: 0.32; cursor: not-allowed; }
.tk-datepicker-actions { margin-top: var(--tk-space-2); border-top: 1px solid var(--tk-border); border-bottom: 0; padding: var(--tk-space-2) 0 0; }

/* form composition */
.tk-form { display: flex; flex-direction: column; gap: var(--tk-space-6); }
.tk-form-section { display: flex; flex-direction: column; gap: var(--tk-space-4); }
.tk-form-section-header { display: flex; flex-direction: column; gap: var(--tk-space-1); padding-bottom: var(--tk-space-3); border-bottom: 1px solid var(--tk-border); }
.tk-form-grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: var(--tk-space-4); }
.tk-form-grid > * { grid-column: span 6; }
.tk-form-grid > .tk-col-full { grid-column: 1 / -1; }
.tk-form-actions { display: flex; justify-content: flex-end; align-items: center; flex-wrap: wrap; gap: var(--tk-space-3); padding-top: var(--tk-space-2); }
@media (max-width: 639px) { .tk-form-grid > * { grid-column: 1 / -1; } .tk-form-actions > .tk-btn { flex: 1 1 auto; } }

/* tooltip */

.tk-tooltip-wrap { position: relative; display: inline-flex; }

.tk-tooltip {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--tk-text);
  color: var(--tk-bg);
  font-size: var(--tk-text-xs);
  font-weight: 500;
  padding: 0.3125rem 0.6875rem;
  border-radius: var(--tk-radius-sm);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--tk-transition);
  z-index: 300;
}

.tk-tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: var(--tk-text);
}

.tk-tooltip-wrap:hover .tk-tooltip,
.tk-tooltip-wrap:focus-within .tk-tooltip,
.tk-tooltip-wrap.tk-tooltip-visible .tk-tooltip { opacity: 1; }

/* toast / notification */

.tk-toast-container {
  position: fixed;
  bottom: var(--tk-space-6);
  right: var(--tk-space-6);
  display: flex;
  flex-direction: column;
  gap: var(--tk-space-3);
  z-index: 400;
  max-width: 360px;
  width: 100%;
}

.tk-toast {
  display: flex;
  align-items: flex-start;
  gap: var(--tk-space-3);
  padding: var(--tk-space-3) var(--tk-space-4);
  background-color: var(--tk-bg);
  border: 1px solid var(--tk-border);
  border-radius: var(--tk-radius);
  box-shadow: var(--tk-shadow-md);
  font-size: var(--tk-text-sm);
  animation: tk-toast-in 220ms var(--tk-ease) both;
}

.tk-toast.tk-dismissing { animation: tk-toast-out 260ms var(--tk-ease) both; }

.tk-toast-body { flex: 1; }
.tk-toast-title   { font-weight: 600; color: var(--tk-text); margin-bottom: 0.125rem; }
.tk-toast-message { color: var(--tk-text-secondary); font-size: var(--tk-text-xs); }

.tk-toast-close {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--tk-text-muted);
  padding: 0.375rem;
  margin: -0.375rem -0.375rem -0.375rem 0;
  line-height: 1;
  transition: color var(--tk-transition), background-color var(--tk-transition);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  border-radius: var(--tk-radius-xs);
}
.tk-toast-close:hover { color: var(--tk-text); background-color: var(--tk-bg-muted); }
.tk-toast-close:focus-visible { outline: 2.5px solid var(--tk-brand); outline-offset: 1px; }

@keyframes tk-toast-in {
  from { opacity: 0; transform: translateX(1.5rem); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes tk-toast-out {
  from { opacity: 1; transform: translateX(0); max-height: 120px; margin-bottom: var(--tk-space-3); }
  to   { opacity: 0; transform: translateX(1.5rem); max-height: 0; margin-bottom: 0; }
}

/* skeleton loader */

.tk-skeleton {
  background: var(--tk-bg-muted);
  border-radius: var(--tk-radius-sm);
}

.tk-skeleton-text   { height: 0.875rem; margin-bottom: 0.5rem; border-radius: var(--tk-radius-xs); }
.tk-skeleton-title  { height: 1.5rem; width: 60%; margin-bottom: 0.75rem; }
.tk-skeleton-circle { border-radius: 50%; }

/* keyboard shortcut */

.tk-kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--tk-font-mono);
  font-size: var(--tk-text-xs);
  font-weight: 500;
  line-height: 1;
  padding: 0.2rem 0.45rem;
  min-width: 1.25rem;
  color: var(--tk-text-secondary);
  background-color: var(--tk-bg-muted);
  border: 1px solid var(--tk-border-strong);
  border-radius: var(--tk-radius-sm);
  white-space: nowrap;
  vertical-align: baseline;
}

/* empty state */

.tk-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--tk-space-8) var(--tk-space-4);
}

.tk-empty-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: var(--tk-radius-md);
  background-color: var(--tk-bg-muted);
  color: var(--tk-text-muted);
  margin-bottom: var(--tk-space-3);
}

.tk-empty-title {
  font-size: var(--tk-text-base);
  font-weight: 600;
  color: var(--tk-text);
  margin-bottom: var(--tk-space-1);
}

.tk-empty-desc {
  font-size: var(--tk-text-sm);
  color: var(--tk-text-secondary);
  max-width: 380px;
  margin-bottom: var(--tk-space-4);
  line-height: var(--tk-leading-relaxed);
}

.tk-empty-actions {
  display: flex;
  align-items: center;
  gap: var(--tk-space-3);
}

/* accordion */

.tk-details {
  border: 1px solid var(--tk-border);
  border-radius: var(--tk-radius);
  background-color: var(--tk-bg);
  overflow: hidden;
  position: relative;
}

.tk-details + .tk-details {
  margin-top: -1px;
}

/* Accordion group — wrap two or more .tk-details in .tk-accordion so the
   set reads as one joined block (rounded corners only on the outer edges,
   square seams between items) instead of a stack of separately-rounded
   pills. A lone .tk-details outside a group stays fully rounded. */
.tk-accordion { display: flex; flex-direction: column; }
.tk-accordion .tk-details { border-radius: 0; }
.tk-accordion .tk-details:first-child { border-radius: var(--tk-radius) var(--tk-radius) 0 0; }
.tk-accordion .tk-details:last-child { border-radius: 0 0 var(--tk-radius) var(--tk-radius); }
.tk-accordion .tk-details:only-child { border-radius: var(--tk-radius); }
/* raise the open/focused/hovered item above its neighbors so its full
   border (and focus outline) isn't overdrawn by the next item's -1px
   overlap seam */
.tk-accordion .tk-details:hover,
.tk-accordion .tk-details:focus-within,
.tk-accordion .tk-details[open] { z-index: 1; }

.tk-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--tk-space-3) var(--tk-space-4);
  font-size: var(--tk-text-sm);
  font-weight: 600;
  color: var(--tk-text);
  cursor: pointer;
  user-select: none;
  list-style: none;
  transition: background-color var(--tk-transition);
}

.tk-summary::-webkit-details-marker { display: none; }

.tk-summary:hover {
  background-color: var(--tk-bg-subtle);
}

.tk-summary:focus-visible {
  outline: 2.5px solid var(--tk-brand);
  outline-offset: -2px;
}

.tk-summary i[data-lucide="chevron-down"],
.tk-summary svg[data-lucide="chevron-down"] {
  transition: transform var(--tk-transition);
  flex-shrink: 0;
}

.tk-details[open] > .tk-summary i[data-lucide="chevron-down"],
.tk-details[open] > .tk-summary svg[data-lucide="chevron-down"] {
  transform: rotate(180deg);
}

.tk-details-body {
  padding: var(--tk-space-4);
  border-top: 1px solid var(--tk-border);
  font-size: var(--tk-text-sm);
  color: var(--tk-text-secondary);
  line-height: var(--tk-leading-normal);
}

/* Action surfaces */

.tk-button-dock {
  position: sticky;
  bottom: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--tk-space-3);
  padding: var(--tk-space-4);
  background-color: var(--tk-bg);
  border: 1px solid var(--tk-border);
}

.tk-button-dock-accessory { margin-right: auto; }

.tk-section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--tk-space-4);
  margin-bottom: var(--tk-space-5);
}

.tk-section-heading-main { min-width: 0; }
.tk-section-heading-title { color: var(--tk-text); font-size: var(--tk-text-xl); line-height: var(--tk-leading-tight); }
.tk-section-heading-description { margin-top: var(--tk-space-1); color: var(--tk-text-secondary); font-size: var(--tk-text-sm); }
.tk-section-heading-actions { display: flex; flex: 0 0 auto; gap: var(--tk-space-2); }

/* Marketing/landing surfaces (site homepages, not application UI — see
   DESIGN.md). One flat solid-color block, a headline, one line of context,
   one action group. No gradients, no floating shapes, no scroll indicators —
   the section carries its own weight through color and space, nothing else. */
.tk-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--tk-space-4);
  padding-block: var(--tk-space-16);
  padding-inline: var(--tk-space-6);
  background-color: var(--tk-bg-subtle);
  color: var(--tk-text);
}

.tk-hero-brand { background-color: var(--tk-brand-btn); color: var(--tk-text-on-brand); }
.tk-hero-inverse { background-color: var(--tk-text); color: var(--tk-bg); }

.tk-hero-title { font-size: var(--tk-text-4xl); line-height: var(--tk-leading-tight); max-width: 40rem; }
.tk-hero-context { font-size: var(--tk-text-lg); line-height: var(--tk-leading-normal); max-width: 34rem; }
.tk-hero-actions { display: flex; gap: var(--tk-space-3); flex-wrap: wrap; justify-content: center; }

/* Solid-color section blocks for alternating landing-page rhythm — no
   gradients, no imagery required. Pick one per section, never combine. */
.tk-section-subtle  { background-color: var(--tk-bg-subtle); }
.tk-section-muted   { background-color: var(--tk-bg-muted); }
.tk-section-brand   { background-color: var(--tk-brand-btn); color: var(--tk-text-on-brand); }
.tk-section-inverse { background-color: var(--tk-text); color: var(--tk-bg); }

/* CTA band — a smaller, mid-page sibling of the hero. Same rule: one
   headline, one action group, flat solid background. No context line by
   default because a CTA band answers a decision already made by the page
   above it; add .tk-hero-context markup inside it only if genuinely needed. */
.tk-cta-band {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--tk-space-4);
  padding: var(--tk-space-8) var(--tk-space-6);
  background-color: var(--tk-bg-subtle);
  color: var(--tk-text);
}
.tk-cta-band-brand   { background-color: var(--tk-brand-btn); color: var(--tk-text-on-brand); }
.tk-cta-band-inverse { background-color: var(--tk-text); color: var(--tk-bg); }
.tk-cta-band-title { font-size: var(--tk-text-2xl); line-height: var(--tk-leading-tight); }
.tk-cta-band-actions { display: flex; gap: var(--tk-space-3); flex-wrap: wrap; }

@media (max-width: 640px) {
  .tk-cta-band { flex-direction: column; align-items: flex-start; }
}

/* Feature grid — one icon, one title, one description per item. No colored
   icon chips, no card border/shadow around each feature; the grid gap does
   the separating. */
.tk-feature-grid {
  display: grid;
  gap: var(--tk-space-8);
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.tk-feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--tk-radius-md);
  background-color: var(--tk-bg-muted);
  color: var(--tk-text);
  margin-bottom: var(--tk-space-3);
}
.tk-feature-title { font-size: var(--tk-text-base); font-weight: 600; color: var(--tk-text); }
.tk-feature-description { margin-top: var(--tk-space-1); font-size: var(--tk-text-sm); color: var(--tk-text-secondary); }

@media (max-width: 640px) {
  .tk-feature-grid { grid-template-columns: 1fr; }
}
@media (min-width: 641px) and (max-width: 1024px) {
  .tk-feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* Stat band — real, current numbers only, one label each. Never a counted-up
   or animated value; the number is either true right now or the section
   doesn't ship. */
.tk-stat-band {
  display: grid;
  gap: var(--tk-space-6);
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  text-align: center;
}
/* reuses .tk-stat-value / .tk-stat-label defined with the Card stat variant */

/* Testimonial — one real quote, one real attribution. This is a single
   fixed block, not a carousel: no auto-advance, no dots, no ambient motion.
   If there is no real quote to put here, omit the section. */
.tk-testimonial {
  max-width: 42rem;
  padding: var(--tk-space-8);
  background-color: var(--tk-bg-subtle);
  border-radius: var(--tk-radius-md);
}
.tk-testimonial-quote { font-size: var(--tk-text-xl); line-height: var(--tk-leading-relaxed); color: var(--tk-text); }
.tk-testimonial-attribution { display: flex; align-items: center; gap: var(--tk-space-3); margin-top: var(--tk-space-5); }
.tk-testimonial-name { font-weight: 600; color: var(--tk-text); font-size: var(--tk-text-sm); }
.tk-testimonial-role { color: var(--tk-text-secondary); font-size: var(--tk-text-sm); }

/* Logo strip — real customer/partner logos only, grayscale-neutral sizing.
   Never a placeholder logo grid; omit the section until there are real ones. */
.tk-logo-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--tk-space-8);
}
.tk-logo-strip img { height: 1.5rem; width: auto; }

/* Pricing table — plan name, one price, a feature list, one action. No
   "Most Popular" ribbon unless the product genuinely designates a
   recommended tier; if it does, use .tk-pricing-featured (a border-strong
   outline, not a stripe/badge stack). */
.tk-pricing {
  display: grid;
  gap: var(--tk-space-6);
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: start;
}
.tk-pricing-card {
  display: flex;
  flex-direction: column;
  gap: var(--tk-space-4);
  padding: var(--tk-space-6);
  border: 1px solid var(--tk-border);
  border-radius: var(--tk-radius-md);
  background-color: var(--tk-bg);
}
.tk-pricing-featured { border-color: var(--tk-border-strong); border-width: 2px; }
.tk-pricing-plan { font-size: var(--tk-text-sm); font-weight: 600; color: var(--tk-text-secondary); }
.tk-pricing-price { font-size: var(--tk-text-3xl); font-weight: 700; color: var(--tk-text); }
.tk-pricing-price span { font-size: var(--tk-text-sm); font-weight: 500; color: var(--tk-text-secondary); }
.tk-pricing-features { display: flex; flex-direction: column; gap: var(--tk-space-2); font-size: var(--tk-text-sm); color: var(--tk-text-secondary); }
.tk-pricing-features li { display: flex; align-items: center; gap: var(--tk-space-2); }

@media (max-width: 640px) {
  .tk-pricing { grid-template-columns: 1fr; }
}
@media (min-width: 641px) and (max-width: 1024px) {
  .tk-pricing { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* Footer — one row of link columns, one bottom bar with copyright and legal
   links. No newsletter signup, no social icon wall, no second logo unless
   the product genuinely needs it; add only what answers a real question. */
.tk-footer {
  padding-block: var(--tk-space-12) var(--tk-space-8);
  background-color: var(--tk-bg-muted);
  color: var(--tk-text-secondary);
  font-size: var(--tk-text-sm);
}
.tk-footer-columns {
  display: grid;
  gap: var(--tk-space-8);
  grid-template-columns: repeat(4, minmax(0, 1fr));
  padding-bottom: var(--tk-space-8);
}
.tk-footer-col-title { font-size: var(--tk-text-xs); font-weight: 600; letter-spacing: var(--tk-tracking-wide); text-transform: uppercase; color: var(--tk-text); margin-bottom: var(--tk-space-3); }
.tk-footer-links { display: flex; flex-direction: column; gap: var(--tk-space-2); }
.tk-footer-links a { color: var(--tk-text-secondary); }
.tk-footer-links a:hover { color: var(--tk-text); }
.tk-footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--tk-space-3);
  padding-top: var(--tk-space-6);
  border-top: 1px solid var(--tk-border);
}
.tk-footer-legal { display: flex; gap: var(--tk-space-4); flex-wrap: wrap; }
.tk-footer-legal a { color: var(--tk-text-secondary); }
.tk-footer-legal a:hover { color: var(--tk-text); }

@media (max-width: 640px) {
  .tk-footer-columns { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tk-footer-bottom { flex-direction: column; align-items: flex-start; }
}
@media (min-width: 641px) and (max-width: 1024px) {
  .tk-footer-columns { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  .tk-hero { padding-block: var(--tk-space-10); }
  .tk-hero-title { font-size: var(--tk-text-3xl); }
}

/* Navigation helpers */

.tk-bottom-nav {
  position: fixed;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 100;
  display: none;
  grid-template-columns: repeat(var(--tk-bottom-nav-items, 4), minmax(0, 1fr));
  padding: var(--tk-space-1) max(var(--tk-space-2), env(safe-area-inset-right)) max(var(--tk-space-1), env(safe-area-inset-bottom)) max(var(--tk-space-2), env(safe-area-inset-left));
  background-color: var(--tk-bg);
  border: 1px solid var(--tk-border);
}

.tk-bottom-nav-item {
  display: flex;
  min-width: 0;
  min-height: 3.25rem;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--tk-space-1);
  padding: var(--tk-space-1);
  color: var(--tk-text-secondary);
  font-size: var(--tk-text-xs);
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  border-radius: var(--tk-radius-sm);
}

.tk-bottom-nav-item:hover { color: var(--tk-text); background-color: var(--tk-bg-muted); text-decoration: none; }
.tk-bottom-nav-item:focus-visible { outline: 2.5px solid var(--tk-brand); outline-offset: -2px; }
.tk-bottom-nav-item.tk-active,
.tk-bottom-nav-item.is-active { color: var(--tk-brand-on-tint); background-color: var(--tk-brand-tint); }
.tk-bottom-nav-label { max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

@media (max-width: 640px) {
  .tk-has-bottom-nav { padding-bottom: calc(3.75rem + env(safe-area-inset-bottom)); }
}

.tk-tree,
.tk-tree ul { padding: 0; margin: 0; list-style: none; }
.tk-tree ul { padding-left: var(--tk-space-5); }

.tk-tree-item {
  display: flex;
  width: 100%;
  min-height: 2.5rem;
  align-items: center;
  gap: var(--tk-space-2);
  padding: var(--tk-space-2) var(--tk-space-3);
  color: var(--tk-text-secondary);
  font-size: var(--tk-text-sm);
  text-align: left;
  text-decoration: none;
  background: transparent;
  border: 0;
  border-radius: var(--tk-radius-sm);
  cursor: pointer;
}

.tk-tree-item:hover { color: var(--tk-text); background-color: var(--tk-bg-muted); text-decoration: none; }
.tk-tree-item:focus-visible { outline: 2.5px solid var(--tk-brand); outline-offset: -2px; }
.tk-tree-item.tk-active,
.tk-tree-item.is-active { color: var(--tk-brand-on-tint); font-weight: 600; background-color: var(--tk-brand-tint); }
.tk-tree-toggle { display: inline-flex; flex: 0 0 auto; transition: transform var(--tk-transition); }
.tk-tree-item[aria-expanded="true"] .tk-tree-toggle { transform: rotate(90deg); }
.tk-tree-label { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* Content primitives */

.tk-list { overflow: hidden; padding: 0; margin: 0; list-style: none; background-color: var(--tk-bg); border: 1px solid var(--tk-border); border-radius: var(--tk-radius); }
.tk-list-item { display: flex; min-height: 3rem; align-items: center; gap: var(--tk-space-3); padding: var(--tk-space-3) var(--tk-space-4); }
.tk-list-item + .tk-list-item { border-top: 1px solid var(--tk-border); }
.tk-list-item-interactive { color: inherit; text-decoration: none; cursor: pointer; }
.tk-list-item-interactive:hover { background-color: var(--tk-bg-subtle); text-decoration: none; }
.tk-list-item-interactive:focus-visible { outline: 2.5px solid var(--tk-brand); outline-offset: -2px; }
.tk-list-item-content { min-width: 0; flex: 1 1 auto; }
.tk-list-item-title { color: var(--tk-text); font-size: var(--tk-text-sm); font-weight: 600; }
.tk-list-item-description { margin-top: var(--tk-space-1); color: var(--tk-text-secondary); font-size: var(--tk-text-xs); }
.tk-list-item-leading,
.tk-list-item-trailing { display: flex; flex: 0 0 auto; align-items: center; }

.tk-tile {
  display: flex;
  min-height: 5rem;
  flex-direction: column;
  gap: var(--tk-space-3);
  padding: var(--tk-space-4);
  color: var(--tk-text);
  text-align: left;
  text-decoration: none;
  background-color: var(--tk-bg);
  border: 1px solid var(--tk-border);
  border-radius: var(--tk-radius);
}

.tk-tile:hover { color: var(--tk-text); background-color: var(--tk-bg-subtle); border-color: var(--tk-border-strong); text-decoration: none; }
.tk-tile:focus-visible { outline: 2.5px solid var(--tk-brand); outline-offset: 2px; }
.tk-tile.tk-active,
.tk-tile.is-active { color: var(--tk-brand-on-tint); background-color: var(--tk-brand-tint); border-color: var(--tk-brand); }
.tk-tile-title { font-size: var(--tk-text-sm); font-weight: 700; }
.tk-tile-description { color: var(--tk-text-secondary); font-size: var(--tk-text-xs); line-height: var(--tk-leading-normal); }
.tk-tile.is-active .tk-tile-description,
.tk-tile.tk-active .tk-tile-description { color: inherit; }

.tk-message-card { padding: var(--tk-space-4); background-color: var(--tk-bg-subtle); border: 1px solid var(--tk-border); border-radius: var(--tk-radius); }
.tk-message-card-header { display: flex; align-items: center; justify-content: space-between; gap: var(--tk-space-3); margin-bottom: var(--tk-space-2); }
.tk-message-card-title { color: var(--tk-text); font-size: var(--tk-text-sm); font-weight: 700; }
.tk-message-card-meta { color: var(--tk-text-muted); font-size: var(--tk-text-xs); }
.tk-message-card-body { color: var(--tk-text-secondary); font-size: var(--tk-text-sm); line-height: var(--tk-leading-relaxed); }

.tk-placeholder {
  display: grid;
  min-height: 10rem;
  place-items: center;
  padding: var(--tk-space-6);
  color: var(--tk-text-secondary);
  text-align: center;
  background-color: var(--tk-bg-subtle);
  border: 1px dashed var(--tk-border-strong);
  border-radius: var(--tk-radius);
}

.tk-placeholder-content { max-width: 28rem; }
.tk-placeholder-title { color: var(--tk-text); font-size: var(--tk-text-base); font-weight: 700; }
.tk-placeholder-description { margin-top: var(--tk-space-1); font-size: var(--tk-text-sm); }
.tk-placeholder-actions { display: flex; justify-content: center; gap: var(--tk-space-2); margin-top: var(--tk-space-4); }

/* Feedback */

.tk-banner {
  display: flex;
  min-height: 2.75rem;
  align-items: center;
  gap: var(--tk-space-3);
  padding: var(--tk-space-3) var(--tk-space-4);
  color: var(--tk-text);
  background-color: var(--tk-bg-subtle);
  border: 1px solid var(--tk-border);
}

.tk-banner-content { min-width: 0; flex: 1 1 auto; font-size: var(--tk-text-sm); }
.tk-banner-actions { display: flex; flex: 0 0 auto; align-items: center; gap: var(--tk-space-2); }
.tk-banner-brand { color: var(--tk-brand-on-tint); background-color: var(--tk-brand-tint); border-color: var(--tk-brand-tint-deep); }
.tk-banner-success { color: var(--tk-success-on-tint); background-color: var(--tk-success-tint); border-color: var(--tk-success); }
.tk-banner-warning { color: var(--tk-warning-on-tint); background-color: var(--tk-warning-tint); border-color: var(--tk-warning); }
.tk-banner-danger { color: var(--tk-danger-on-tint); background-color: var(--tk-danger-tint); border-color: var(--tk-danger); }
.tk-banner-info { color: var(--tk-info-on-tint); background-color: var(--tk-info-tint); border-color: var(--tk-info); }

/* Form extensions */

.tk-form-message-slot { min-height: 1.25rem; }

.tk-pin-input { display: flex; gap: var(--tk-space-2); }
.tk-pin {
  width: 2.75rem;
  height: 3rem;
  padding: 0;
  color: var(--tk-text);
  font-family: var(--tk-font-mono);
  font-size: var(--tk-text-lg);
  font-weight: 700;
  text-align: center;
  background-color: var(--tk-bg);
  border: 1.5px solid var(--tk-border-strong);
  border-radius: var(--tk-radius);
  outline: 0 solid transparent;
}

.tk-pin:hover:not(:disabled) { border-color: var(--tk-brand); }
.tk-pin:focus { border-color: var(--tk-brand); outline: 3px solid var(--tk-border-focus); }
.tk-pin[aria-invalid="true"] { border-color: var(--tk-danger); }
.tk-pin:disabled { color: var(--tk-text-disabled); background-color: var(--tk-bg-muted); cursor: not-allowed; }

.tk-rating { display: inline-flex; flex-direction: row-reverse; justify-content: flex-end; gap: var(--tk-space-1); }
.tk-rating-input { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
.tk-rating-label { display: inline-flex; padding: var(--tk-space-1); color: var(--tk-text-muted); cursor: pointer; }
.tk-rating-label:hover,
.tk-rating-label:hover ~ .tk-rating-label,
.tk-rating-input:checked ~ .tk-rating-label { color: var(--tk-warning-on-tint); }
.tk-rating-input:focus-visible + .tk-rating-label { outline: 2.5px solid var(--tk-brand); outline-offset: 1px; border-radius: var(--tk-radius-sm); }
.tk-rating-input:disabled + .tk-rating-label { opacity: 0.45; cursor: not-allowed; }

/* Floating surfaces */

.tk-popover { position: relative; display: inline-flex; }
.tk-popover-panel {
  position: absolute;
  top: calc(100% + var(--tk-space-2));
  left: 0;
  z-index: 160;
  width: max-content;
  min-width: 16rem;
  max-width: min(24rem, calc(100vw - var(--tk-space-8)));
  padding: var(--tk-space-4);
  visibility: hidden;
  color: var(--tk-text);
  background-color: var(--tk-bg);
  border: 1px solid var(--tk-border);
  border-radius: var(--tk-radius);
  box-shadow: var(--tk-shadow-md);
  opacity: 0;
  pointer-events: none;
  transform: translateY(calc(-1 * var(--tk-space-2)));
  transition: opacity var(--tk-transition), transform var(--tk-transition), visibility 0s linear var(--tk-duration);
}

.tk-popover.tk-open .tk-popover-panel {
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
  transition: opacity var(--tk-transition), transform var(--tk-transition);
}

.tk-popover-panel.tk-right { right: 0; left: auto; }
.tk-popover-title { margin-bottom: var(--tk-space-2); font-size: var(--tk-text-sm); font-weight: 700; }
.tk-popover-body { color: var(--tk-text-secondary); font-size: var(--tk-text-sm); line-height: var(--tk-leading-normal); }

.tk-sheet {
  position: fixed;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 210;
  display: flex;
  max-height: min(90dvh, 48rem);
  flex-direction: column;
  visibility: hidden;
  background-color: var(--tk-bg);
  border: 1px solid var(--tk-border);
  border-radius: var(--tk-radius-lg) var(--tk-radius-lg) 0 0;
  box-shadow: var(--tk-shadow-lg);
  opacity: 0;
  pointer-events: none;
  transform: translateY(100%);
  transition: opacity var(--tk-transition-md), transform var(--tk-transition-md), visibility 0s linear var(--tk-duration-md);
}

.tk-sheet.tk-open { visibility: visible; opacity: 1; pointer-events: auto; transform: translateY(0); transition: opacity var(--tk-transition-md), transform var(--tk-transition-md); }
.tk-sheet-handle { width: var(--tk-space-10); height: var(--tk-space-1); margin: var(--tk-space-2) auto 0; background-color: var(--tk-border-strong); border-radius: var(--tk-radius-full); }
.tk-sheet-header { display: flex; align-items: flex-start; justify-content: space-between; gap: var(--tk-space-4); padding: var(--tk-space-4) var(--tk-space-5); border-bottom: 1px solid var(--tk-border); }
.tk-sheet-title { color: var(--tk-text); font-size: var(--tk-text-lg); font-weight: 700; }
.tk-sheet-body { min-height: 0; flex: 1 1 auto; overflow-y: auto; padding: var(--tk-space-5); }
.tk-sheet-footer { display: flex; justify-content: flex-end; gap: var(--tk-space-3); padding: var(--tk-space-4) var(--tk-space-5); border-top: 1px solid var(--tk-border); }

/* Layout primitives */

.tk-layout-grid {
  display: grid;
  grid-template-columns: repeat(var(--tk-layout-columns), minmax(0, 1fr));
  gap: var(--tk-layout-gutter);
  width: min(100%, var(--tk-content-wide));
  margin-inline: auto;
  padding-inline: var(--tk-layout-margin);
}

.tk-subgrid {
  display: grid;
  grid-template-columns: subgrid;
  grid-column: 1 / -1;
  gap: inherit;
}

.tk-span-full { grid-column: 1 / -1; }
.tk-span-1 { grid-column: span 1; }
.tk-span-2 { grid-column: span 2; }
.tk-span-3 { grid-column: span 3; }
.tk-span-4 { grid-column: span 4; }
.tk-content-reading { width: min(100%, var(--tk-content-reading)); }
.tk-content-standard { width: min(100%, var(--tk-content-standard)); }
.tk-content-wide { width: min(100%, var(--tk-content-wide)); }
.tk-density-compact { --tk-stack-gap: var(--tk-space-2); --tk-cluster-gap: var(--tk-space-2); }
.tk-density-comfortable { --tk-stack-gap: var(--tk-space-4); --tk-cluster-gap: var(--tk-space-3); }

.tk-stack { display: flex; flex-direction: column; gap: var(--tk-stack-gap, var(--tk-space-4)); }
.tk-cluster { display: flex; flex-wrap: wrap; align-items: center; gap: var(--tk-cluster-gap, var(--tk-space-3)); }
.tk-layout-sidebar { display: grid; grid-template-columns: minmax(12rem, 18rem) minmax(0, 1fr); gap: var(--tk-space-6); }
.tk-layout-split { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--tk-space-6); }
.tk-grid-fit { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, var(--tk-grid-min, 16rem)), 1fr)); gap: var(--tk-grid-gap, var(--tk-space-4)); }

@media (max-width: 640px) {
  :root { --tk-layout-columns: 4; --tk-layout-gutter: 1rem; --tk-layout-margin: 1rem; }
  .tk-button-dock { flex-direction: column; align-items: stretch; }
  .tk-button-dock-accessory { width: 100%; margin-right: 0; }
  .tk-bottom-nav { display: grid; }
  .tk-section-heading { align-items: stretch; flex-direction: column; }
  .tk-section-heading-actions,
  .tk-placeholder-actions,
  .tk-banner-actions,
  .tk-sheet-footer { flex-direction: column; align-items: stretch; }
  .tk-layout-sidebar,
  .tk-layout-split { grid-template-columns: minmax(0, 1fr); }
  .tk-pin-input { gap: var(--tk-space-1); }
  .tk-pin { width: min(2.75rem, calc((100vw - var(--tk-space-8)) / 6)); }
}

@media (min-width: 641px) and (max-width: 1024px) {
  :root { --tk-layout-columns: 8; --tk-layout-gutter: 1.5rem; --tk-layout-margin: 1.5rem; }
  .tk-span-tablet-2 { grid-column: span 2; }
  .tk-span-tablet-4 { grid-column: span 4; }
  .tk-span-tablet-6 { grid-column: span 6; }
  .tk-span-tablet-8 { grid-column: span 8; }
  .tk-layout-sidebar { grid-template-columns: minmax(11rem, 14rem) minmax(0, 1fr); gap: var(--tk-space-4); }
  .tk-layout-split { gap: var(--tk-space-4); }
}

@media (min-width: 1025px) and (max-width: 1440px) {
  :root { --tk-layout-columns: 12; --tk-layout-gutter: 2rem; --tk-layout-margin: 2rem; }
  .tk-span-desktop-3 { grid-column: span 3; }
  .tk-span-desktop-4 { grid-column: span 4; }
  .tk-span-desktop-6 { grid-column: span 6; }
  .tk-span-desktop-8 { grid-column: span 8; }
  .tk-span-desktop-12 { grid-column: span 12; }
  .tk-sheet { right: var(--tk-space-6); bottom: var(--tk-space-6); left: auto; width: min(42rem, calc(100vw - var(--tk-space-12))); border-radius: var(--tk-radius-lg); }
}

@media (min-width: 1441px) {
  :root { --tk-layout-columns: 12; --tk-layout-gutter: 2rem; --tk-layout-margin: 4rem; }
  .tk-span-wide-3 { grid-column: span 3; }
  .tk-span-wide-4 { grid-column: span 4; }
  .tk-span-wide-6 { grid-column: span 6; }
  .tk-span-wide-8 { grid-column: span 8; }
  .tk-span-wide-12 { grid-column: span 12; }
  .tk-layout-sidebar { grid-template-columns: minmax(16rem, 20rem) minmax(0, 1fr); gap: var(--tk-space-8); }
  .tk-sheet { right: var(--tk-space-8); bottom: var(--tk-space-8); left: auto; width: 44rem; border-radius: var(--tk-radius-lg); }
}

/* surface & border utilities */

.tk-surface             { background-color: var(--tk-bg); }
.tk-surface-subtle      { background-color: var(--tk-bg-subtle); }
.tk-surface-muted       { background-color: var(--tk-bg-muted); }
.tk-surface-brand       { background-color: var(--tk-brand-btn); color: var(--tk-text-on-brand); }
.tk-surface-brand-tint  { background-color: var(--tk-brand-tint); }

.tk-border-wrap         { border: 1px solid var(--tk-border); }
.tk-border-strong-wrap  { border: 1px solid var(--tk-border-strong); }
.tk-border-t            { border-top: 1px solid var(--tk-border); }
.tk-border-b            { border-bottom: 1px solid var(--tk-border); }
.tk-border-none         { border: none; }

.tk-rounded-none { border-radius: 0; }
.tk-rounded-xs   { border-radius: var(--tk-radius-xs); }
.tk-rounded-sm   { border-radius: var(--tk-radius-sm); }
.tk-rounded      { border-radius: var(--tk-radius); }
.tk-rounded-md   { border-radius: var(--tk-radius-md); }
.tk-rounded-lg   { border-radius: var(--tk-radius-lg); }
.tk-rounded-xl   { border-radius: var(--tk-radius-xl); }
.tk-rounded-full { border-radius: var(--tk-radius-full); }

.tk-shadow-none  { box-shadow: none; }
.tk-shadow-xs    { box-shadow: var(--tk-shadow-xs); }
.tk-shadow-sm    { box-shadow: var(--tk-shadow-sm); }
.tk-shadow       { box-shadow: var(--tk-shadow); }
.tk-shadow-md    { box-shadow: var(--tk-shadow-md); }
.tk-shadow-lg    { box-shadow: var(--tk-shadow-lg); }

/* spacing utilities */

.tk-p-0  { padding: 0; }
.tk-p-1  { padding: var(--tk-space-1); }
.tk-p-2  { padding: var(--tk-space-2); }
.tk-p-3  { padding: var(--tk-space-3); }
.tk-p-4  { padding: var(--tk-space-4); }
.tk-p-5  { padding: var(--tk-space-5); }
.tk-p-6  { padding: var(--tk-space-6); }
.tk-p-8  { padding: var(--tk-space-8); }

.tk-px-0 { padding-inline: 0; }
.tk-px-1 { padding-inline: var(--tk-space-1); }
.tk-px-2 { padding-inline: var(--tk-space-2); }
.tk-px-3 { padding-inline: var(--tk-space-3); }
.tk-px-4 { padding-inline: var(--tk-space-4); }
.tk-px-5 { padding-inline: var(--tk-space-5); }
.tk-px-6 { padding-inline: var(--tk-space-6); }
.tk-py-1 { padding-block: var(--tk-space-1); }
.tk-py-2 { padding-block: var(--tk-space-2); }
.tk-py-3 { padding-block: var(--tk-space-3); }
.tk-py-4 { padding-block: var(--tk-space-4); }
.tk-py-5 { padding-block: var(--tk-space-5); }
.tk-py-6 { padding-block: var(--tk-space-6); }

.tk-m-0  { margin: 0; }
.tk-mt-1 { margin-top: var(--tk-space-1); }
.tk-mt-2 { margin-top: var(--tk-space-2); }
.tk-mt-3 { margin-top: var(--tk-space-3); }
.tk-mt-4 { margin-top: var(--tk-space-4); }
.tk-mt-6 { margin-top: var(--tk-space-6); }
.tk-mt-8 { margin-top: var(--tk-space-8); }
.tk-mb-1 { margin-bottom: var(--tk-space-1); }
.tk-mb-2 { margin-bottom: var(--tk-space-2); }
.tk-mb-3 { margin-bottom: var(--tk-space-3); }
.tk-mb-4 { margin-bottom: var(--tk-space-4); }
.tk-mb-6 { margin-bottom: var(--tk-space-6); }
.tk-mb-8 { margin-bottom: var(--tk-space-8); }
.tk-ml-1 { margin-left: var(--tk-space-1); }
.tk-ml-2 { margin-left: var(--tk-space-2); }
.tk-ml-3 { margin-left: var(--tk-space-3); }
.tk-ml-4 { margin-left: var(--tk-space-4); }
.tk-ml-auto { margin-left: auto; }
.tk-mr-1 { margin-right: var(--tk-space-1); }
.tk-mr-2 { margin-right: var(--tk-space-2); }
.tk-mr-3 { margin-right: var(--tk-space-3); }
.tk-mr-4 { margin-right: var(--tk-space-4); }
.tk-mr-auto { margin-right: auto; }
.tk-mt-5 { margin-top: var(--tk-space-5); }
.tk-mb-5 { margin-bottom: var(--tk-space-5); }
.tk-mx-auto { margin-inline: auto; }

/* Complete spacing scale */

.tk-p-10 { padding: var(--tk-space-10); }
.tk-p-12 { padding: var(--tk-space-12); }
.tk-p-16 { padding: var(--tk-space-16); }
.tk-px-8 { padding-inline: var(--tk-space-8); }
.tk-px-10 { padding-inline: var(--tk-space-10); }
.tk-px-12 { padding-inline: var(--tk-space-12); }
.tk-px-16 { padding-inline: var(--tk-space-16); }
.tk-py-0 { padding-block: 0; }
.tk-py-8 { padding-block: var(--tk-space-8); }
.tk-py-10 { padding-block: var(--tk-space-10); }
.tk-py-12 { padding-block: var(--tk-space-12); }
.tk-py-16 { padding-block: var(--tk-space-16); }

.tk-pt-0 { padding-top: 0; }
.tk-pt-1 { padding-top: var(--tk-space-1); }
.tk-pt-2 { padding-top: var(--tk-space-2); }
.tk-pt-3 { padding-top: var(--tk-space-3); }
.tk-pt-4 { padding-top: var(--tk-space-4); }
.tk-pt-5 { padding-top: var(--tk-space-5); }
.tk-pt-6 { padding-top: var(--tk-space-6); }
.tk-pt-8 { padding-top: var(--tk-space-8); }
.tk-pt-10 { padding-top: var(--tk-space-10); }
.tk-pt-12 { padding-top: var(--tk-space-12); }
.tk-pt-16 { padding-top: var(--tk-space-16); }
.tk-pb-0 { padding-bottom: 0; }
.tk-pb-1 { padding-bottom: var(--tk-space-1); }
.tk-pb-2 { padding-bottom: var(--tk-space-2); }
.tk-pb-3 { padding-bottom: var(--tk-space-3); }
.tk-pb-4 { padding-bottom: var(--tk-space-4); }
.tk-pb-5 { padding-bottom: var(--tk-space-5); }
.tk-pb-6 { padding-bottom: var(--tk-space-6); }
.tk-pb-8 { padding-bottom: var(--tk-space-8); }
.tk-pb-10 { padding-bottom: var(--tk-space-10); }
.tk-pb-12 { padding-bottom: var(--tk-space-12); }
.tk-pb-16 { padding-bottom: var(--tk-space-16); }
.tk-ps-0 { padding-inline-start: 0; }
.tk-ps-1 { padding-inline-start: var(--tk-space-1); }
.tk-ps-2 { padding-inline-start: var(--tk-space-2); }
.tk-ps-3 { padding-inline-start: var(--tk-space-3); }
.tk-ps-4 { padding-inline-start: var(--tk-space-4); }
.tk-ps-5 { padding-inline-start: var(--tk-space-5); }
.tk-ps-6 { padding-inline-start: var(--tk-space-6); }
.tk-ps-8 { padding-inline-start: var(--tk-space-8); }
.tk-pe-0 { padding-inline-end: 0; }
.tk-pe-1 { padding-inline-end: var(--tk-space-1); }
.tk-pe-2 { padding-inline-end: var(--tk-space-2); }
.tk-pe-3 { padding-inline-end: var(--tk-space-3); }
.tk-pe-4 { padding-inline-end: var(--tk-space-4); }
.tk-pe-5 { padding-inline-end: var(--tk-space-5); }
.tk-pe-6 { padding-inline-end: var(--tk-space-6); }
.tk-pe-8 { padding-inline-end: var(--tk-space-8); }

.tk-m-1 { margin: var(--tk-space-1); }
.tk-m-2 { margin: var(--tk-space-2); }
.tk-m-3 { margin: var(--tk-space-3); }
.tk-m-4 { margin: var(--tk-space-4); }
.tk-m-5 { margin: var(--tk-space-5); }
.tk-m-6 { margin: var(--tk-space-6); }
.tk-m-8 { margin: var(--tk-space-8); }
.tk-m-10 { margin: var(--tk-space-10); }
.tk-m-12 { margin: var(--tk-space-12); }
.tk-m-16 { margin: var(--tk-space-16); }
.tk-m-auto { margin: auto; }
.tk-mx-0 { margin-inline: 0; }
.tk-mx-1 { margin-inline: var(--tk-space-1); }
.tk-mx-2 { margin-inline: var(--tk-space-2); }
.tk-mx-3 { margin-inline: var(--tk-space-3); }
.tk-mx-4 { margin-inline: var(--tk-space-4); }
.tk-mx-5 { margin-inline: var(--tk-space-5); }
.tk-mx-6 { margin-inline: var(--tk-space-6); }
.tk-mx-8 { margin-inline: var(--tk-space-8); }
.tk-my-0 { margin-block: 0; }
.tk-my-1 { margin-block: var(--tk-space-1); }
.tk-my-2 { margin-block: var(--tk-space-2); }
.tk-my-3 { margin-block: var(--tk-space-3); }
.tk-my-4 { margin-block: var(--tk-space-4); }
.tk-my-5 { margin-block: var(--tk-space-5); }
.tk-my-6 { margin-block: var(--tk-space-6); }
.tk-my-8 { margin-block: var(--tk-space-8); }
.tk-my-auto { margin-block: auto; }
.tk-mt-0 { margin-top: 0; }
.tk-mt-10 { margin-top: var(--tk-space-10); }
.tk-mt-12 { margin-top: var(--tk-space-12); }
.tk-mt-16 { margin-top: var(--tk-space-16); }
.tk-mt-auto { margin-top: auto; }
.tk-mb-0 { margin-bottom: 0; }
.tk-mb-10 { margin-bottom: var(--tk-space-10); }
.tk-mb-12 { margin-bottom: var(--tk-space-12); }
.tk-mb-16 { margin-bottom: var(--tk-space-16); }
.tk-mb-auto { margin-bottom: auto; }
.tk-ms-0 { margin-inline-start: 0; }
.tk-ms-1 { margin-inline-start: var(--tk-space-1); }
.tk-ms-2 { margin-inline-start: var(--tk-space-2); }
.tk-ms-3 { margin-inline-start: var(--tk-space-3); }
.tk-ms-4 { margin-inline-start: var(--tk-space-4); }
.tk-ms-5 { margin-inline-start: var(--tk-space-5); }
.tk-ms-6 { margin-inline-start: var(--tk-space-6); }
.tk-ms-8 { margin-inline-start: var(--tk-space-8); }
.tk-ms-auto { margin-inline-start: auto; }
.tk-me-0 { margin-inline-end: 0; }
.tk-me-1 { margin-inline-end: var(--tk-space-1); }
.tk-me-2 { margin-inline-end: var(--tk-space-2); }
.tk-me-3 { margin-inline-end: var(--tk-space-3); }
.tk-me-4 { margin-inline-end: var(--tk-space-4); }
.tk-me-5 { margin-inline-end: var(--tk-space-5); }
.tk-me-6 { margin-inline-end: var(--tk-space-6); }
.tk-me-8 { margin-inline-end: var(--tk-space-8); }
.tk-me-auto { margin-inline-end: auto; }

/* misc utilities */

.tk-w-full   { width: 100%; }
.tk-h-full   { height: 100%; }
.tk-hidden   { display: none; }
.tk-truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.tk-line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.tk-no-select      { user-select: none; }
.tk-cursor-pointer { cursor: pointer; }

.tk-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.tk-skip-link {
  position: fixed;
  top: var(--tk-space-2);
  left: var(--tk-space-2);
  z-index: 500;
  padding: var(--tk-space-2) var(--tk-space-3);
  color: var(--tk-text-on-brand);
  background-color: var(--tk-brand-btn);
  border-radius: var(--tk-radius-sm);
  transform: translateY(calc(-100% - var(--tk-space-4)));
}

.tk-skip-link:focus { transform: translateY(0); outline: 3px solid var(--tk-border-focus); outline-offset: 2px; }

/* overflow */
.tk-overflow-hidden   { overflow: hidden; }
.tk-overflow-auto     { overflow: auto; }
.tk-overflow-x-auto   { overflow-x: auto; }
.tk-overflow-y-auto   { overflow-y: auto; }

/* display */
.tk-block        { display: block; }
.tk-inline-block { display: inline-block; }
.tk-inline       { display: inline; }
.tk-inline-flex  { display: inline-flex; }

/* position */
.tk-relative { position: relative; }
.tk-absolute { position: absolute; }
.tk-fixed    { position: fixed; }
.tk-sticky   { position: sticky; }
.tk-inset-0  { inset: 0; }

/* sizing */
.tk-w-auto     { width: auto; }
.tk-w-fit      { width: fit-content; }
.tk-h-screen   { height: 100vh; }
.tk-min-h-screen { min-height: 100vh; min-height: 100dvh; }
.tk-min-w-0    { min-width: 0; }
.tk-max-w-full { max-width: 100%; }

/* flex extras */
.tk-shrink-0   { flex-shrink: 0; }
.tk-grow       { flex-grow: 1; }
.tk-self-start { align-self: flex-start; }
.tk-self-center { align-self: center; }
.tk-self-end { align-self: flex-end; }
.tk-self-stretch { align-self: stretch; }
.tk-row-gap-2 { row-gap: var(--tk-space-2); }
.tk-row-gap-4 { row-gap: var(--tk-space-4); }
.tk-row-gap-6 { row-gap: var(--tk-space-6); }
.tk-column-gap-2 { column-gap: var(--tk-space-2); }
.tk-column-gap-4 { column-gap: var(--tk-space-4); }
.tk-column-gap-6 { column-gap: var(--tk-space-6); }

/* z-index */
.tk-z-0   { z-index: 0; }
.tk-z-10  { z-index: 10; }
.tk-z-20  { z-index: 20; }
.tk-z-50  { z-index: 50; }

/* pointer events */
.tk-pointer-events-none { pointer-events: none; }
.tk-pointer-events-auto { pointer-events: auto; }

/* cursor */
.tk-cursor-default     { cursor: default; }
.tk-cursor-not-allowed { cursor: not-allowed; }

/* text extras */
.tk-whitespace-nowrap { white-space: nowrap; }
.tk-whitespace-normal { white-space: normal; }
.tk-break-all         { word-break: break-all; }
.tk-break-words       { overflow-wrap: break-word; }
.tk-tabular-nums      { font-variant-numeric: tabular-nums; }
.tk-line-clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* aspect */
.tk-aspect-square { aspect-ratio: 1; }
.tk-aspect-video { aspect-ratio: 16 / 9; }

/* list reset */
.tk-list-none { list-style: none; padding: 0; margin: 0; }

/* opacity */
.tk-opacity-0   { opacity: 0; }
.tk-opacity-50  { opacity: 0.5; }
.tk-opacity-75  { opacity: 0.75; }

/* transition utility */
.tk-transition {
  transition:
    background-color var(--tk-transition),
    border-color var(--tk-transition),
    color var(--tk-transition);
}
.tk-no-transition { transition: none; }

/* user initiated theme transition */
@media (prefers-reduced-motion: no-preference) {
  .tk-switching-theme *,
  .tk-switching-theme *::before,
  .tk-switching-theme *::after {
    transition:
      color 320ms var(--tk-ease),
      background-color 320ms var(--tk-ease),
      border-color 320ms var(--tk-ease),
      fill 320ms var(--tk-ease),
      stroke 320ms var(--tk-ease),
      box-shadow 320ms var(--tk-ease),
      opacity 320ms var(--tk-ease) !important;
  }
}

/* reduced motion */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
  /* skeleton: swap animation for static bg */
  .tk-skeleton { animation: none; background: var(--tk-bg-muted); }
}

/* forced colors / windows high contrast */

@media (forced-colors: active) {
  .tk-btn { border-color: ButtonText; }
  .tk-btn-primary,
  .tk-btn-danger,
  .tk-btn-success { background-color: Highlight; color: HighlightText; border-color: Highlight; }
  .tk-btn-ghost,
  .tk-btn-outline { border-color: ButtonText; color: ButtonText; }
  .tk-btn:focus-visible,
  .tk-input:focus-visible,
  .tk-select:focus-visible,
  .tk-textarea:focus-visible,
  .tk-checkbox:focus-visible,
  .tk-radio:focus-visible,
  .tk-switch:focus-visible { outline: 3px solid Highlight; }
  .tk-checkbox:checked,
  .tk-radio:checked { background-color: Highlight; border-color: Highlight; }
  .tk-pin:focus,
  .tk-rating-input:focus-visible + .tk-rating-label,
  .tk-tree-item:focus-visible,
  .tk-tile:focus-visible,
  .tk-list-item-interactive:focus-visible { outline: 3px solid Highlight; }
  .tk-bottom-nav-item.tk-active,
  .tk-bottom-nav-item.is-active,
  .tk-tree-item.tk-active,
  .tk-tree-item.is-active,
  .tk-tile.tk-active,
  .tk-tile.is-active { color: HighlightText; background-color: Highlight; }
  .tk-badge-brand,
  .tk-badge-success,
  .tk-badge-warning,
  .tk-badge-danger,
  .tk-badge-info { background-color: Canvas; color: CanvasText; border: 1px solid CanvasText; }
  .tk-skeleton { animation: none; background: GrayText; }
  .tk-card { border-color: CanvasText; }
}

/* coarse pointer / touch adjustments */

@media (pointer: coarse) {
  .tk-checkbox,
  .tk-radio { width: 1.375rem; height: 1.375rem; }
  .tk-checkbox:checked::before { width: 0.6875rem; height: 0.375rem; }
  .tk-radio:checked::before { width: 0.5rem; height: 0.5rem; }
  .tk-btn-xs { min-height: 2.5rem; padding-top: 0.5rem; padding-bottom: 0.5rem; }
  .tk-btn-sm { min-height: 2.75rem; }
  .tk-switch { width: 2.75rem; height: 1.5rem; }
  .tk-switch::before { width: 1.125rem; height: 1.125rem; }
  .tk-switch:checked::before { transform: translateX(1.25rem); }
  .tk-tab { padding-top: 0.75rem; padding-bottom: 0.75rem; }
  .tk-navbar-link { padding-top: 0.5rem; padding-bottom: 0.5rem; }
  .tk-dropdown-item { padding-top: 0.625rem; padding-bottom: 0.625rem; }
  .tk-modal-close,
  .tk-drawer-close,
  .tk-stepper-btn,
  .tk-pagination-link { min-width: 2.75rem; min-height: 2.75rem; }
}

/* print */

@media print {
  .tk-navbar,
  .tk-modal-overlay,
  .tk-dropdown-menu,
  .tk-tooltip,
  .tk-toast-container,
  .tk-bottom-nav,
  .tk-button-dock,
  .tk-skeleton { display: none !important; }
  body { background: #ffffff; color: #000000; }
  a { color: #000000; text-decoration: underline; }
  .tk-card { border: 1px solid #999999; box-shadow: none; }
  .tk-btn { border: 1px solid #000000; background: #ffffff; color: #000000; box-shadow: none; }
}