/* ChaiUI look for the timetable page (body.chai). Dark by default (html.dark), light on request.
   Neutral near-black, white type, one cream highlight, warm hairline cards, no shadows, orange almost nowhere. */

body.chai {
  --c-bg: #ffffff;
  --c-fg: #0a0a0a;
  --c-fg-2: #404040;          /* neutral-700 */
  --c-fg-3: #737373;          /* neutral-500 */
  --c-line: #e5e5e5;
  --c-muted: #f5f5f5;
  --c-primary: #171717;
  --c-on-primary: #fafafa;
  --c-highlight: #854d0e;     /* yellow-800 */
  --c-edge: rgb(120 53 15 / .15);
  --c-edge-hover: rgb(120 53 15 / .28);
  --c-fill: rgb(255 255 255 / .7);
  --c-seg-on: #ffedd5;        /* orange-100 */
  --c-seg-on-fg: #7c2d12;     /* orange-900 */
  --c-yellow: #a16207;
  --c-brand: #f97316;
  --c-ring: #a3a3a3;
  --font-sans: 'Manrope', ui-sans-serif, system-ui, sans-serif;
  --font-display: 'Montserrat', ui-sans-serif, system-ui, sans-serif;

  background: var(--c-bg);
  color: var(--c-fg);
  font-family: var(--font-sans);
  font-size: 16px;
  position: relative;
  isolation: isolate;
  overflow-x: clip;
}
html.dark body.chai {
  --c-bg: #0a0a0a;
  --c-fg: #fafafa;
  --c-fg-2: #d4d4d4;
  --c-fg-3: #a3a3a3;          /* neutral-400 */
  --c-line: rgb(255 255 255 / .1);
  --c-muted: #262626;
  --c-primary: #e5e5e5;
  --c-on-primary: #171717;
  --c-highlight: #ffedd5;     /* orange-100 */
  --c-edge: rgb(255 247 237 / .15);
  --c-edge-hover: rgb(255 247 237 / .3);
  --c-fill: rgb(0 0 0 / .1);
  --c-seg-on: rgb(124 45 18 / .4); /* orange-900/40 */
  --c-seg-on-fg: #ffedd5;
  --c-yellow: #facc15;
  --c-ring: #737373;
  color-scheme: dark;
}

body.chai :focus-visible { box-shadow: 0 0 0 2px var(--c-bg), 0 0 0 4px var(--c-ring); border-radius: 6px; outline: none; }
body.chai h1, body.chai h2, body.chai h3 { font-family: var(--font-sans); color: var(--c-fg); text-wrap: balance; }
body.chai .highlight {
  font-family: var(--font-display); font-weight: 500; letter-spacing: -.025em;
  text-transform: capitalize; color: var(--c-highlight);
}

/* Soft neutral glow at the top of the page, fading out */
.chai-glow {
  position: absolute; inset: 0 0 auto; height: 620px; z-index: -1; pointer-events: none;
  background:
    radial-gradient(600px 300px at 50% -40px, rgb(255 237 213 / .10), transparent 70%),
    radial-gradient(1100px 420px at 50% -120px, rgb(255 255 255 / .05), transparent 70%);
  mask-image: linear-gradient(to bottom, #000 55%, transparent);
}
html:not(.dark) .chai-glow {
  background: radial-gradient(700px 320px at 50% -60px, rgb(194 120 3 / .08), transparent 70%);
}

/* Header: sticky, transparent, blurs only after scrolling */
body.chai .ajrak { display: none; }
body.chai .site-header { background: transparent; backdrop-filter: none; border-bottom: 1px solid transparent; transition: background-color .3s, backdrop-filter .3s, border-color .3s; }
body.chai .site-header.scrolled { background: color-mix(in srgb, var(--c-bg) 60%, transparent); backdrop-filter: blur(12px); border-bottom-color: var(--c-line); }
body.chai .brand-text strong { font-family: 'Onest', var(--font-sans); font-weight: 600; letter-spacing: -.02em; color: var(--c-fg); font-size: 1.15rem; }
body.chai .brand-text small { color: var(--c-fg-3); }
body.chai .crest path:first-child { fill: var(--c-fg); }
body.chai .crest path:nth-child(2) { stroke: var(--c-fg-3); }
body.chai .crest path:nth-child(3) { fill: var(--c-bg); }
body.chai .crest path:nth-child(4) { stroke: var(--c-fg); }
body.chai .nav a { color: var(--c-fg-3); font-family: var(--font-sans); font-weight: 600; transition: color .2s; }
body.chai .nav a:hover { background: transparent; color: var(--c-brand); }
body.chai .nav a[aria-current="page"] { background: transparent; color: var(--c-fg); box-shadow: inset 0 -2px 0 var(--c-fg); border-radius: 0; }
body.chai .menu-btn { border-color: var(--c-line); color: var(--c-fg); }
@media (max-width: 760px) {
  body.chai .nav { background: color-mix(in srgb, var(--c-bg) 92%, transparent); backdrop-filter: blur(16px); border-color: var(--c-line); box-shadow: none; }
  body.chai .nav a[aria-current="page"] { box-shadow: none; color: var(--c-fg); background: var(--c-muted); border-radius: 8px; }
}

/* Footer: neutral, with the 10% warm hairline */
body.chai .site-footer { background: transparent; color: var(--c-fg-3); position: relative; font-family: var(--font-display); font-size: .9rem; }
body.chai .site-footer::before {
  content: ''; position: absolute; top: 0; left: 50%; width: 100%; max-width: 1440px; height: 1px;
  transform: translateX(-50%); background: #d97706; opacity: .1;
  mask-image: linear-gradient(90deg, transparent 0%, #000 40%, #000 60%, transparent 100%);
}
html.dark body.chai .site-footer::before { background: #fdba74; }
body.chai .site-footer strong { color: var(--c-fg); font-family: var(--font-sans); }
body.chai .site-footer a { color: var(--c-fg-2); }
body.chai .site-footer a:hover { color: var(--c-brand); }
body.chai .foot-list .icon { color: var(--c-fg-3); }
body.chai .site-footer .crest path:first-child { fill: var(--c-fg); }
body.chai .site-footer .crest path:nth-child(3) { fill: var(--c-bg); }

/* Page */
.chai-page { width: 100%; max-width: 72rem; margin-inline: auto; padding: 24px; }
@media (min-width: 640px) { .chai-page { padding: 48px; } }
.chai-head { text-align: center; margin: 8px auto 36px; max-width: 48rem; }
.chai-head h1 { font-size: 1.5rem; font-weight: 500; margin: 0 0 12px; letter-spacing: -.01em; }
@media (min-width: 640px) { .chai-head h1 { font-size: 1.875rem; } }
.chai-head p { color: var(--c-fg-2); font-size: 1rem; margin: 0; }
html.dark .chai-head p { color: var(--c-fg-3); }
@media (min-width: 768px) { .chai-head p { font-size: 1.25rem; } }

.card-chai {
  border-radius: 14px; border: 1px solid var(--c-edge); background: var(--c-fill);
  backdrop-filter: blur(4px); transition: border-color .3s, opacity .3s;
}
.card-chai:hover { border-color: var(--c-edge-hover); }
body.chai .empty-state { padding: 48px 24px; }
body.chai .empty-state p { color: var(--c-fg-3); }

/* Toolbar */
.chai-toolbar { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.chai-actions { display: flex; gap: 10px; align-items: center; }
body.chai .segmented { display: inline-flex; padding: 0; background: var(--c-bg); border: 1px solid var(--c-line); border-radius: 8px; overflow: hidden; }
html.dark body.chai .segmented { background: rgb(0 0 0 / .5); }
body.chai .segmented button {
  min-height: 40px; padding: 0 16px; border-radius: 0; background: transparent; border: 0;
  font: 600 .9rem var(--font-sans); color: var(--c-fg-3); cursor: pointer; transition: background-color .2s, color .2s;
}
body.chai .segmented button + button { border-left: 1px solid var(--c-line); }
body.chai .segmented button:hover { color: var(--c-fg); }
body.chai .segmented button[aria-pressed="true"] { background: var(--c-seg-on); color: var(--c-seg-on-fg); box-shadow: none; }

.btn-chai {
  display: inline-flex; align-items: center; gap: 6px; min-height: 40px; padding: 0 16px;
  background: #171717; color: #fff; border: 0; cursor: pointer;
  font: 600 .9rem var(--font-sans); transition: background-color .2s;
}
.btn-chai:hover { background: #000; }
html.dark .btn-chai { background: #fff; color: #000; }
html.dark .btn-chai:hover { background: #e5e5e5; }
.btn-asym { border-radius: 0 10px 0 10px; }

/* Half-circle theme switcher, one label for both themes */
.theme-switch {
  width: 40px; height: 40px; display: grid; place-items: center; cursor: pointer;
  background: transparent; border: 1px solid var(--c-line); border-radius: 10px 0 10px 0; color: var(--c-fg);
}
.theme-switch .half {
  width: 18px; height: 18px; border-radius: 50%; border: 1.5px solid currentColor;
  background: linear-gradient(90deg, currentColor 50%, transparent 50%);
  transition: transform .3s;
}
html:not(.dark) .theme-switch .half { transform: rotate(180deg); }
.theme-switch:hover { border-color: var(--c-edge-hover); }

/* Tabs */
body.chai .chai-tabs { gap: 6px; margin-bottom: 28px; }
body.chai .tab {
  min-height: 40px; padding: 0 14px; border-radius: 8px; border: 1px solid var(--c-line);
  background: transparent; color: var(--c-fg-3); font: 600 .9rem var(--font-sans);
}
body.chai .tab:hover { color: var(--c-fg); border-color: var(--c-edge-hover); }
body.chai .tab[aria-selected="true"] { background: var(--c-primary); border-color: var(--c-primary); color: var(--c-on-primary); }

/* Panel */
.tt-panel-head { display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: end; justify-content: space-between; margin-bottom: 16px; }
.tt-panel-head h2 { font-size: 1.5rem; font-weight: 500; margin: 0 0 4px; }
@media (min-width: 640px) { .tt-panel-head h2 { font-size: 1.875rem; } }
#tt-lead { margin: 0; color: var(--c-fg-3); }
#tt-lead b { color: var(--c-fg); font-weight: 700; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; max-width: 640px; justify-content: flex-end; }
.tag {
  display: inline-flex; gap: 6px; align-items: center; padding: 3px 8px; border-radius: 6px;
  border: 1px solid var(--c-line); font-size: .8rem; color: var(--c-fg-3);
}
.tag b { font-family: var(--font-display); color: var(--c-fg); font-weight: 600; }
@media (max-width: 760px) { .tags { justify-content: flex-start; } }

/* Grid */
.tt-wrap { overflow-x: auto; }
body.chai .tt { width: 100%; min-width: 860px; border-collapse: collapse; table-layout: fixed; font-size: .9rem; }
body.chai .tt th, body.chai .tt td {
  padding: 12px 8px; text-align: center; vertical-align: middle;
  border-bottom: 1px solid var(--c-line); border-right: 1px solid var(--c-line);
}
body.chai .tt th:last-child, body.chai .tt td:last-child { border-right: 0; }
body.chai .tt tbody tr:last-child > * { border-bottom: 0; }
body.chai .tt thead th {
  background: transparent; color: var(--c-fg-3); font: 600 .72rem var(--font-sans);
  text-transform: uppercase; letter-spacing: .08em; padding: 14px 8px;
}
body.chai .tt .day-col { width: 124px; text-align: left; padding-left: 18px; }
body.chai .tt tbody th {
  background: transparent; text-align: left; padding-left: 18px; width: 124px;
  font: 600 .95rem var(--font-display); color: var(--c-fg);
}
body.chai .tt tbody th em {
  display: block; font: 600 .68rem var(--font-sans); font-style: normal; letter-spacing: .08em;
  text-transform: uppercase; color: var(--c-highlight); margin-top: 2px;
}
body.chai .tt tbody tr:hover > * { background: color-mix(in srgb, var(--c-fg) 3%, transparent); }
body.chai .tt tr.today > * { background: color-mix(in srgb, var(--c-highlight) 7%, transparent); }
body.chai .cell { display: flex; flex-direction: column; gap: 2px; align-items: center; }
body.chai .cell b { font: 600 .9rem/1.25 var(--font-display); color: var(--c-fg); letter-spacing: -.01em; }
body.chai .cell span { font-size: .78rem; color: var(--c-fg-3); line-height: 1.25; }
body.chai .cell + .cell { margin-top: 8px; padding-top: 8px; border-top: 1px dashed var(--c-line); }
body.chai td.free { background-image: radial-gradient(circle, var(--c-line) 1px, transparent 1.4px); background-size: 10px 10px; }
body.chai td.off { color: var(--c-fg-3); font-size: .85rem; background: transparent; font-style: normal; }
body.chai td.double { outline: 1px solid var(--c-yellow); outline-offset: -4px; border-radius: 6px; }

.tt-note { display: flex; gap: 8px; align-items: center; margin: 12px 0 0; font-size: .88rem; color: var(--c-fg-3); }
.tt-note .swatch { width: 14px; height: 14px; border-radius: 4px; border: 1px solid var(--c-yellow); flex: none; }
body.chai .scroll-hint { color: var(--c-fg-3); }
body.chai .sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

@media (prefers-reduced-motion: reduce) {
  body.chai *, body.chai *::before, body.chai *::after { transition: none !important; }
}

@media print {
  html.dark body.chai { --c-bg: #fff; --c-fg: #000; --c-fg-2: #333; --c-fg-3: #555; --c-line: #ccc; --c-highlight: #854d0e; }
  .chai-glow, .chai-toolbar, .chai-tabs, .tt-note { display: none !important; }
  body.chai { background: #fff; }
  .card-chai { border-color: #ccc; backdrop-filter: none; }
  body.chai .tt { min-width: 0; }
}

/* The panel is a <section>; drop the site-wide section padding */
body.chai .tt-panel { padding: 0; }