/* sch.tongde.us — live camp-schedule engine
   Design: warm paper + temple-lantern dark mode. Brush CJK display face paired with
   a mono numeral face for clock-time, echoing the source schedule's own hand-photographed,
   hand-highlighted paper. Category colors are lifted from the source sheet's own
   yellow/orange/blue highlighter scheme so a reader can map straight back to the original. */

:root {
  --ink: #211d17;
  --ink-soft: #5b5643;
  --ink-faint: #948d76;
  --paper: #faf6ec;
  --paper-raised: #f2ead5;
  --paper-line: #e2d6b8;
  --accent-red: #a63a2e;
  --accent-gold: #a97e22;
  --accent-bark: #93611f;
  --accent-dusk: #366270;
  --accent-plum: #6d4a63;
  --shadow: 220 30% 10%;

  --font-display: "LXGW WenKai TC", "Noto Serif TC", serif;
  --font-body: "Newsreader", "Noto Serif TC", serif;
  --font-ui: "IBM Plex Sans", "Noto Sans TC", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ink: #ede4cf;
    --ink-soft: #bfb494;
    --ink-faint: #7c7460;
    --paper: #161209;
    --paper-raised: #201a10;
    --paper-line: #382d1b;
    --accent-red: #e2705f;
    --accent-gold: #e2b955;
    --accent-bark: #d69b52;
    --accent-dusk: #7fb4c4;
    --accent-plum: #c496b6;
  }
}
:root[data-theme="dark"] {
  --ink: #ede4cf;
  --ink-soft: #bfb494;
  --ink-faint: #7c7460;
  --paper: #161209;
  --paper-raised: #201a10;
  --paper-line: #382d1b;
  --accent-red: #e2705f;
  --accent-gold: #e2b955;
  --accent-bark: #d69b52;
  --accent-dusk: #7fb4c4;
  --accent-plum: #c496b6;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; }
button { font: inherit; color: inherit; }

.page {
  max-width: 640px;
  margin: 0 auto;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

/* ---------- masthead ---------- */
.masthead {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--paper);
  border-bottom: 1px solid var(--paper-line);
  padding: clamp(.75rem, 3vw, 1.25rem) clamp(1rem, 4vw, 1.5rem) 0;
}
.masthead-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
}
.event-name .zh {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 6vw, 2rem);
  font-weight: 700;
  letter-spacing: .02em;
  line-height: 1.15;
}
.event-name .zh-sub {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(.95rem, 3.4vw, 1.15rem);
  color: var(--ink-soft);
  margin-top: .1rem;
}
.clock {
  text-align: right;
  flex-shrink: 0;
  padding-top: .15rem;
}
.clock-time {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.1rem, 4.4vw, 1.4rem);
  font-variant-numeric: tabular-nums;
  color: var(--accent-red);
}
.clock-label {
  display: block;
  font-family: var(--font-ui);
  font-size: .62rem;
  letter-spacing: .04em;
  color: var(--ink-faint);
  text-transform: uppercase;
  margin-top: .1rem;
}

/* day tabs */
.day-tabs {
  display: flex;
  gap: .4rem;
  margin-top: .85rem;
  overflow-x: auto;
  scrollbar-width: none;
  padding-bottom: .75rem;
}
.day-tabs::-webkit-scrollbar { display: none; }
.day-tab {
  flex: 1 0 auto;
  min-width: 4.6rem;
  background: transparent;
  border: 1px solid var(--paper-line);
  border-radius: 10px;
  padding: .4rem .55rem .45rem;
  text-align: center;
  cursor: pointer;
  transition: background .15s, border-color .15s;
}
.day-tab .d-zh { display: block; font-family: var(--font-ui); font-weight: 600; font-size: .82rem; }
.day-tab .d-sub { display: block; font-family: var(--font-ui); font-size: .66rem; color: var(--ink-faint); margin-top: .1rem; }
.day-tab.is-today .d-zh { color: var(--accent-red); }
.day-tab.is-today::after {
  content: "";
  display: block;
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--accent-red);
  margin: .3rem auto 0;
}
.day-tab.is-active {
  background: var(--paper-raised);
  border-color: var(--ink-faint);
}
.day-tab:focus-visible { outline: 2px solid var(--accent-dusk); outline-offset: 2px; }

/* day rail — signature element: a live progress line across today's 05:00-24:00 span */
.day-rail {
  position: relative;
  height: 34px;
  margin: 0 0 .85rem;
}
.day-rail-track {
  position: absolute;
  left: 0; right: 0; top: 15px;
  height: 2px;
  background: var(--paper-line);
  border-radius: 2px;
}
.day-rail-fill {
  position: absolute;
  left: 0; top: 15px;
  height: 2px;
  background: var(--accent-red);
  opacity: .35;
  border-radius: 2px;
  transition: width 1s linear;
}
.rail-tick {
  position: absolute;
  top: 10px;
  width: 12px; height: 12px;
  transform: translateX(-6px);
  cursor: pointer;
  padding: 0; border: none; background: none;
}
.rail-tick::after {
  content: "";
  position: absolute; left: 3px; top: 3px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--paper-line);
  border: 1px solid var(--paper);
}
.rail-tick[data-tag="course"]::after { background: var(--accent-gold); }
.rail-tick[data-tag="ritual"]::after,
.rail-tick[data-tag="ceremony"]::after { background: var(--accent-bark); }
.rail-tick[data-tag="competition"]::after { background: var(--accent-dusk); }
.rail-tick[data-tag="talk"]::after { background: var(--accent-plum); }
.rail-tick.is-past::after { opacity: .35; }
.rail-now-dot {
  position: absolute;
  top: 9px;
  width: 14px; height: 14px;
  transform: translateX(-7px);
  border-radius: 50%;
  background: var(--accent-red);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent-red) 25%, transparent);
  transition: left 1s linear;
}
@media (prefers-reduced-motion: no-preference) {
  .rail-now-dot { animation: pulse-dot 2.4s ease-in-out infinite; }
}
@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent-red) 25%, transparent); }
  50% { box-shadow: 0 0 0 8px color-mix(in srgb, var(--accent-red) 12%, transparent); }
}

/* ---------- status banner (upcoming / complete states) ---------- */
.status-banner {
  margin: 0 clamp(1rem, 4vw, 1.5rem) 1rem;
  padding: .85rem 1rem;
  background: var(--paper-raised);
  border: 1px solid var(--paper-line);
  border-radius: 12px;
  font-family: var(--font-ui);
  font-size: .85rem;
  color: var(--ink-soft);
}
.status-banner strong { color: var(--ink); }

/* ---------- timeline ---------- */
.timeline {
  flex: 1;
  padding: 1rem clamp(1rem, 4vw, 1.5rem) 2rem;
}
.timeline-day-note {
  font-family: var(--font-ui);
  font-size: .8rem;
  color: var(--ink-faint);
  margin: 0 0 .75rem .1rem;
}
.item {
  position: relative;
  display: grid;
  grid-template-columns: 3.6rem 1fr;
  gap: .75rem;
  padding: .6rem 0;
  border-left: 2px solid var(--paper-line);
  padding-left: 1rem;
  margin-left: .1rem;
}
.item::before {
  content: "";
  position: absolute;
  left: -5px; top: 1.11rem;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--paper-line);
  border: 2px solid var(--paper);
}
.item[data-tag="course"]::before { background: var(--accent-gold); }
.item[data-tag="ritual"]::before, .item[data-tag="ceremony"]::before { background: var(--accent-bark); }
.item[data-tag="competition"]::before { background: var(--accent-dusk); }
.item[data-tag="talk"]::before { background: var(--accent-plum); }

.item-time {
  font-family: var(--font-mono);
  font-size: .92rem;
  font-variant-numeric: tabular-nums;
  color: var(--ink-faint);
  padding-top: .1rem;
}
.item-zh {
  font-family: var(--font-display);
  font-size: 1.05rem;
  line-height: 1.4;
}
.item-en {
  font-family: var(--font-body);
  font-style: italic;
  font-size: .96rem;
  color: var(--ink-soft);
  margin-top: .15rem;
  line-height: 1.35;
}
.item-badge {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: .62rem;
  font-weight: 600;
  letter-spacing: .06em;
  padding: .1rem .4rem;
  border-radius: 5px;
  margin-bottom: .25rem;
}

.item.is-past { opacity: .45; }
.item.is-past .item-zh { text-decoration: line-through; text-decoration-color: var(--paper-line); text-decoration-thickness: 1px; }

.item.is-current {
  padding-top: .85rem;
  padding-bottom: .95rem;
  padding-right: .75rem;
  background: var(--paper-raised);
  border-radius: 0 12px 12px 0;
  border-left: 2px solid var(--accent-red);
}
.item.is-current::before {
  width: 11px; height: 11px;
  left: -6.5px; top: 1.26rem;
  background: var(--accent-red);
}
.item.is-current .item-badge { background: var(--accent-red); color: var(--paper); }
@media (prefers-reduced-motion: no-preference) {
  .item.is-current { animation: settle-in .6s ease-out; }
}
@keyframes settle-in {
  from { background: color-mix(in srgb, var(--accent-red) 18%, var(--paper-raised)); }
  to { background: var(--paper-raised); }
}

.item.is-next .item-badge { background: transparent; color: var(--ink-faint); border: 1px solid var(--paper-line); }

/* closing note */
.closing-note {
  margin: 1.25rem 0 0;
  padding: .9rem 1rem;
  background: var(--paper-raised);
  border-radius: 12px;
  font-family: var(--font-ui);
  font-size: .82rem;
  color: var(--ink-soft);
  border-left: 2px solid var(--accent-gold);
}
.closing-note .zh { color: var(--ink); display: block; margin-bottom: .2rem; }

/* ---------- camp info (roster) ---------- */
.camp-info {
  border-top: 1px solid var(--paper-line);
  padding: 0 clamp(1rem, 4vw, 1.5rem);
}
.info-toggle {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 1rem 0;
  font-family: var(--font-ui);
  font-size: .82rem;
  color: var(--ink-soft);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.info-toggle:focus-visible { outline: 2px solid var(--accent-dusk); outline-offset: 2px; }
.info-toggle .chev { transition: transform .2s; }
.info-toggle[aria-expanded="true"] .chev { transform: rotate(180deg); }
.info-body { padding-bottom: 1.5rem; }
.info-section { margin-bottom: 1.25rem; }
.info-section h3 {
  font-family: var(--font-ui);
  font-size: .72rem;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 .5rem;
}
.info-counts {
  font-family: var(--font-ui);
  font-size: .78rem;
  color: var(--ink-soft);
  line-height: 1.6;
}
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: .5rem;
  margin-top: .6rem;
}
.team-card {
  background: var(--paper-raised);
  border-radius: 8px;
  padding: .5rem .65rem;
  font-family: var(--font-ui);
  font-size: .78rem;
}
.team-card .n { color: var(--ink-faint); margin-right: .3rem; }
.counselor-row {
  display: flex;
  justify-content: space-between;
  gap: .75rem;
  padding: .3rem 0;
  border-bottom: 1px dashed var(--paper-line);
  font-family: var(--font-ui);
  font-size: .8rem;
}
.counselor-row .topic { color: var(--ink-soft); flex-shrink: 0; }
.counselor-row .names { text-align: right; }

/* ---------- footer ---------- */
.page-footer {
  padding: 1rem clamp(1rem, 4vw, 1.5rem) 2rem;
  font-family: var(--font-ui);
  font-size: .7rem;
  color: var(--ink-faint);
}
.page-footer a { color: var(--accent-dusk); text-decoration: none; border-bottom: 1px solid currentColor; }

/* ---------- jump-to-now pill ---------- */
.jump-now {
  position: fixed;
  left: 50%;
  bottom: 1.25rem;
  transform: translateX(-50%);
  z-index: 30;
}
.jump-now button {
  background: var(--ink);
  color: var(--paper);
  border: none;
  border-radius: 999px;
  padding: .55rem 1.1rem;
  font-family: var(--font-ui);
  font-size: .78rem;
  font-weight: 600;
  box-shadow: 0 6px 20px hsl(var(--shadow) / .35);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: .4rem;
}
.jump-now .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent-red);
}

@media (min-width: 640px) {
  .item { grid-template-columns: 4.2rem 1fr; }
}