/* Third Floor Studio: the timetable on the studio door.
   Tokens first; everything else is quiet so the mats can carry the page. */
:root {
  --chalk: #F3F5F2;
  --ink: #1C2240;
  --ink-soft: #565D78;
  --mat: #3B4BC8;
  --mat-line: #C5CBD8;
  --marigold: #E9A400;
  --alert: #B3261E;
  --on-mat: #F3F5F2;
  --panel: #E6EAE5;
  --font-display: "Familjen Grotesk", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Atkinson Hyperlegible", "Segoe UI", system-ui, sans-serif;
  --r: 3px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --chalk: #151a2e; --ink: #E8EBF3; --ink-soft: #A2A9C2; --mat: #8D98F2; --mat-line: #3D4566;
    --marigold: #F2B33D; --alert: #FF8A80; --on-mat: #151a2e; --panel: #1E2440; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --chalk: #151a2e; --ink: #E8EBF3; --ink-soft: #A2A9C2; --mat: #8D98F2; --mat-line: #3D4566;
  --marigold: #F2B33D; --alert: #FF8A80; --on-mat: #151a2e; --panel: #1E2440; color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-padding-top: 1rem; }
body {
  margin: 0;
  background: var(--chalk);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.55;
  padding-inline: 16px;
  padding-block: 0 3rem;
}
.wrap { max-width: 64rem; margin-inline: auto; }
a { color: var(--mat); text-underline-offset: 0.18em; }
:focus-visible { outline: 2px solid var(--mat); outline-offset: 3px; border-radius: var(--r); }
h1, h2, h3 { font-family: var(--font-display); text-wrap: balance; margin: 0; }
p { margin: 0; }
.num { font-variant-numeric: tabular-nums; }

/* Header */
.top {
  display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between;
  gap: 0.5rem 2rem; padding-block: 2rem 2.5rem;
}
.brand {
  font-family: var(--font-display); font-weight: 700; font-size: 1.35rem; letter-spacing: -0.01em;
  color: var(--ink); text-decoration: none;
}
.now { color: var(--ink-soft); font-size: 0.95rem; }

/* Timetable */
.week-title { font-size: clamp(2.2rem, 6vw, 3.6rem); font-weight: 700; letter-spacing: -0.03em; line-height: 1; margin-block-end: 0.6rem; }
.week-sub { color: var(--ink-soft); max-width: 36rem; margin-block-end: 3rem; }
.day { display: grid; grid-template-columns: 13rem 1fr; gap: 1rem 2rem; padding-block: 0 3.5rem; }
.day-name { font-size: 2.1rem; font-weight: 600; letter-spacing: -0.02em; line-height: 1.05; position: sticky; top: 1rem; align-self: start; }
.day-name small { display: block; font-family: var(--font-body); font-size: 1rem; font-weight: 400; letter-spacing: 0; color: var(--ink-soft); margin-block-start: 0.35rem; }
.rows { display: grid; gap: 1.75rem; min-width: 0; }
.row { display: grid; grid-template-columns: 4.25rem minmax(0, 1fr) auto 7.5rem; align-items: center; gap: 0.25rem 1.5rem; }
.time { font-size: 1.15rem; font-weight: 700; font-variant-numeric: tabular-nums; align-self: start; padding-top: 0.1rem; }
.what { min-width: 0; }
.what h3 { font-size: 1.25rem; font-weight: 600; line-height: 1.2; }
.what h3 a { color: inherit; text-decoration: none; }
.what h3 a:hover { text-decoration: underline; text-decoration-thickness: 1px; }
.what p { color: var(--ink-soft); font-size: 0.95rem; }
.act { justify-self: end; text-align: right; font-size: 0.92rem; color: var(--ink-soft); }
.row.past .time, .row.past .what h3 { color: var(--ink-soft); }

/* Mats: one spot in the room each */
.mats { display: inline-flex; gap: 3px; align-items: flex-end; }
.mat { width: 8px; height: 22px; border-radius: var(--r); border: 1.5px solid var(--mat-line); background: transparent; }
.mat.taken { background: var(--mat); border-color: var(--mat); }
.mat.yours { background: var(--marigold); border-color: var(--marigold); }
.mats.big { gap: 6px; flex-wrap: wrap; }
.mats.big .mat { width: 18px; height: 50px; border-width: 2px; }
.row.past .mat.taken { opacity: 0.45; }
@keyframes roll { from { clip-path: inset(100% 0 0 0); } to { clip-path: inset(0 0 0 0); } }
.mat.yours.fresh { position: relative; background: transparent; border-color: var(--mat-line); }
.mat.yours.fresh::after { content: ""; position: absolute; inset: -2px; border-radius: var(--r); background: var(--marigold); animation: roll 700ms cubic-bezier(.2,.7,.2,1) 250ms both; }
@media (prefers-reduced-motion: reduce) {
  .mat.yours.fresh { background: var(--marigold); border-color: var(--marigold); }
  .mat.yours.fresh::after { animation: none; display: none; }
}

/* Buttons */
.btn {
  font: 700 0.98rem/1 var(--font-body); padding: 0.7rem 1.1rem; border-radius: var(--r);
  border: 2px solid var(--mat); background: var(--mat); color: var(--on-mat);
  cursor: pointer; text-decoration: none; display: inline-block;
}
.btn:hover { filter: brightness(1.08); }
.btn.quiet { background: transparent; color: var(--mat); }

/* Class page */
.back { display: inline-block; margin-block-end: 2rem; }
.detail { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 22rem); gap: 3rem 4rem; align-items: start; }
.detail h1 { font-size: clamp(2.4rem, 7vw, 4rem); font-weight: 700; letter-spacing: -0.03em; line-height: 0.98; margin-block-end: 1rem; }
.when { font-size: 1.2rem; margin-block-end: 1.25rem; max-width: 34rem; }
.desc { color: var(--ink-soft); max-width: 34rem; margin-block-end: 2.25rem; }
.mat-caption { color: var(--ink-soft); font-size: 0.95rem; margin-block-start: 0.75rem; }
.key { display: flex; flex-wrap: wrap; gap: 0.4rem 1.25rem; font-size: 0.9rem; color: var(--ink-soft); margin-block-start: 0.5rem; }
.key span { display: inline-flex; align-items: center; gap: 0.4rem; }
.key .mat { width: 6px; height: 14px; }

form { display: grid; gap: 1.1rem; }
.field { display: grid; gap: 0.35rem; }
label { font-weight: 700; font-size: 0.95rem; }
input { font: inherit; color: var(--ink); background: var(--chalk); border: 2px solid var(--mat-line); border-radius: var(--r); padding: 0.6rem 0.7rem; width: 100%; }
input:focus-visible { outline: none; border-color: var(--mat); }
input[aria-invalid="true"] { border-color: var(--alert); }
.err { color: var(--alert); font-size: 0.9rem; }
.demo-note { font-size: 0.9rem; color: var(--ink-soft); }
.panel-text { font-size: 1.05rem; }

/* Confirmation */
.code { font-family: var(--font-display); font-weight: 700; font-size: clamp(2.4rem, 8vw, 3.4rem); letter-spacing: 0.04em; font-variant-numeric: tabular-nums; line-height: 1; margin-block: 0.4rem 0.6rem; }
.confirm h1 { font-size: clamp(2.2rem, 6vw, 3.4rem); }
.stack { display: grid; gap: 1.25rem; max-width: 36rem; }
.actions { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center; }

/* Quiet states */
.state { max-width: 34rem; padding-block: 1rem 4rem; display: grid; gap: 1rem; }
.state h1 { font-size: clamp(2rem, 6vw, 3rem); letter-spacing: -0.025em; line-height: 1.02; }
.state.error h1 { color: var(--alert); }

/* Footer */
footer {
  margin-block-start: 3rem; padding-block-start: 1.5rem; border-top: 1.5px solid var(--mat-line);
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.5rem 2rem;
  color: var(--ink-soft); font-size: 0.95rem;
}

@media (max-width: 760px) {
  .day { grid-template-columns: 1fr; padding-block-end: 2.75rem; }
  .day-name { position: static; font-size: 1.75rem; }
  .row { grid-template-columns: 3.6rem minmax(0, 1fr); gap: 0.6rem 0.9rem; }
  .row .mats { grid-column: 2; }
  .row .act { grid-column: 2; justify-self: start; text-align: left; }
  .detail { grid-template-columns: 1fr; }
}