:root {
  --bg: #f6f6f4;
  --surface: #ffffff;
  --surface-2: #efefec;
  --text: #16171a;
  --muted: #5d6068;
  --faint: #6e717a;
  --border: #e0e0dc;
  --accent: #c8102e;
  --accent-ink: #ffffff;
  --accent-soft: #fbe7ea;
  --live: #d92d20;
  --live-bg: #d92d20;
  --mark: #ffe08a;
  --warn-bg: #fff4e5;
  --warn-ink: #8a4b00;
  --shadow: 0 1px 2px rgb(0 0 0 / 6%), 0 2px 8px rgb(0 0 0 / 4%);
  --sheet-shadow: 0 -8px 40px rgb(0 0 0 / 18%);
  --radius: 14px;
  --gutter: 16px;
  --bar-h: 112px;
  --maxw: 760px;

  --t-animation: #d97706;
  --t-games: #059669;
  --t-vfx: #7c3aed;
  --t-storytelling: #db2777;
  --t-vr-ar-xr: #65a30d;
  --t-latest-techniques: #ea580c;
  --t-career-journeys: #2563eb;
  --t-ai: #0891b2;
  --t-virtual-production: #0d9488;

  color-scheme: light dark;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111214;
    --surface: #1b1c1f;
    --surface-2: #26272b;
    --text: #f1f1f2;
    --muted: #a9acb3;
    --faint: #8d9098;
    --border: #2e3035;
    --accent: #ff5468;
    --accent-ink: #1a0a0d;
    --accent-soft: #3a1a20;
    --live: #ff6b5e;
    --live-bg: #c4281c;
    --mark: #6b5310;
    --warn-bg: #3a2a12;
    --warn-ink: #ffcf8a;
    --shadow: none;
    --sheet-shadow: 0 -8px 40px rgb(0 0 0 / 60%);

    --t-animation: #fbbf24;
    --t-games: #34d399;
    --t-vfx: #a78bfa;
    --t-storytelling: #f472b6;
    --t-vr-ar-xr: #a3e635;
    --t-latest-techniques: #fb923c;
    --t-career-journeys: #60a5fa;
    --t-ai: #22d3ee;
    --t-virtual-production: #2dd4bf;
  }
}

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

html { background: var(--bg); scroll-padding-top: calc(var(--bar-h) + 44px); }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.4;
  min-height: 100vh;
  padding-bottom: env(safe-area-inset-bottom);
}

button, input { font: inherit; color: inherit; }
button { cursor: pointer; -webkit-tap-highlight-color: transparent; }
a { color: var(--accent); }
svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; flex: none; }
[hidden] { display: none !important; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---------- Masthead (scrolls away) ---------- */
.masthead {
  max-width: var(--maxw);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: calc(10px + env(safe-area-inset-top)) var(--gutter) 2px;
}
.masthead-text { flex: 1; min-width: 0; }
.masthead h1 { margin: 0; font-size: clamp(18px, 5.4vw, 24px); line-height: 1.2; letter-spacing: -0.01em; }
.masthead p { margin: 2px 0 0; font-size: 13px; color: var(--muted); }
@media (max-width: 359px) { .masthead p { font-size: 12px; } .filter-btn span:not(.badge) { display: none; } }

.icon-btn {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--muted);
  flex: none;
}
.icon-btn:active { background: var(--surface-2); }

/* ---------- Sticky bar: search + day tabs ---------- */
.bar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding-top: env(safe-area-inset-top);
}
.search-row, .days { max-width: var(--maxw); margin: 0 auto; }
.search-row { display: flex; gap: 8px; padding: 8px var(--gutter) 6px; }

.search {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 6px;
  height: 44px;
  padding: 0 4px 0 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
}
.search:focus-within { border-color: var(--accent); }
.search > svg { color: var(--faint); width: 20px; height: 20px; }
.search input {
  flex: 1;
  min-width: 0;
  height: 100%;
  border: 0;
  outline: 0;
  background: transparent;
  font-size: 16px; /* 16px stops iOS zooming on focus */
}
.search input::-webkit-search-cancel-button { display: none; }
.clear-q {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--muted);
}
.clear-q svg { width: 18px; height: 18px; }

.filter-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 44px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  font-size: 15px;
  font-weight: 600;
  flex: none;
}
.filter-btn svg { width: 20px; height: 20px; }
.filter-btn.active { border-color: var(--accent); color: var(--accent); }
.badge {
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  border-radius: 10px;
  background: var(--accent);
  color: var(--accent-ink);
  font-size: 12px;
  font-weight: 700;
  line-height: 20px;
  text-align: center;
}

.days {
  display: grid;
  grid-template-columns: repeat(var(--day-count, 6), 1fr);
  gap: 4px;
  padding: 0 calc(var(--gutter) - 4px) 6px;
}
.day {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 4px 2px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--muted);
}
.day .dow { font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; }
.day .dom { font-size: 19px; font-weight: 700; line-height: 1.1; color: var(--text); }
.day[aria-pressed="true"] { background: var(--text); color: var(--bg); }
.day[aria-pressed="true"] .dom { color: var(--bg); }
.day.today:not([aria-pressed="true"]) .dow { color: var(--accent); }
.day .today-dot {
  position: absolute;
  top: 5px;
  right: calc(50% - 22px);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}
.day .count {
  margin-top: 2px;
  min-width: 22px;
  padding: 0 6px;
  border-radius: 8px;
  background: var(--accent);
  color: var(--accent-ink);
  font-size: 11px;
  font-weight: 700;
  line-height: 16px;
}
.days.finding .day { min-height: 58px; }
.day.zero { opacity: 0.45; }
.day.zero .count { background: var(--faint); }

/* ---------- Chip row (subjects + active filters) ---------- */
.chips-row {
  max-width: var(--maxw);
  margin: 0 auto;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 10px var(--gutter) 4px;
  scrollbar-width: none;
  -webkit-mask-image: linear-gradient(to right, #000 calc(100% - 28px), transparent);
  mask-image: linear-gradient(to right, #000 calc(100% - 28px), transparent);
}
.chips-row::-webkit-scrollbar { display: none; }
.chips-row .chip:last-child { margin-right: 24px; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 36px;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  flex: none;
  position: relative;
}
/* Enlarge the hit area to 44px without growing the chip. */
.chip::after { content: ""; position: absolute; inset: -5px 0; }
.chip .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--c, var(--faint)); flex: none; }
.chip .n { color: var(--muted); font-size: 12px; font-variant-numeric: tabular-nums; }
.chip[aria-pressed="true"] { background: var(--text); border-color: var(--text); color: var(--bg); }
.chip[aria-pressed="true"] .n { color: inherit; opacity: 0.7; }
.chip[aria-pressed="true"] .dot { box-shadow: 0 0 0 2px var(--bg); }
.chip.removable { background: var(--accent-soft); border-color: transparent; color: var(--text); }
.chip.removable svg { width: 16px; height: 16px; }
.chip.clear { color: var(--accent); border-color: transparent; background: transparent; font-weight: 600; }
.chip:disabled { opacity: 0.4; }

/* ---------- List ---------- */
main { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter) 96px; outline: none; }
.status { margin: 8px 0 4px; min-height: 18px; font-size: 13px; color: var(--muted); }
.status button { border: 0; background: none; padding: 0 2px; color: var(--accent); font-weight: 600; font-size: 13px; }

.group { margin: 0 0 6px; scroll-margin-top: var(--bar-h); }
.group-head {
  position: sticky;
  top: var(--bar-h);
  z-index: 5;
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin: 0 calc(-1 * var(--gutter));
  padding: 8px var(--gutter) 6px;
  background: var(--bg);
  font-size: 15px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.group-head .sub { font-size: 13px; font-weight: 500; color: var(--muted); }
.group-head.day-head { font-size: 17px; border-bottom: 1px solid var(--border); margin-bottom: 8px; }
.group.past .group-head { color: var(--muted); }

.card {
  position: relative;
  display: flex;
  margin: 0 0 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  scroll-margin-top: calc(var(--bar-h) + 44px);
}
.card { cursor: pointer; }
.card.live { border-color: var(--live); box-shadow: 0 0 0 1px var(--live); }
.card-link { color: inherit; text-decoration: none; }
.card-link:hover { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 2px; }
/* Finished sessions: flatter and quieter, but still readable. */
.card.past { background: transparent; box-shadow: none; }
.card.past h3, .card.past .meta .time { color: var(--muted); }
.card-open {
  flex: 1;
  min-width: 0;
  padding: 12px 4px 12px 14px;
  border-radius: var(--radius) 0 0 var(--radius);
}
.card:active:not(:has(.star-btn:active)) { background: var(--surface-2); }
.meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2px 8px;
  font-size: 13px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.meta .time { font-weight: 700; color: var(--text); }
.meta .room { font-weight: 600; text-transform: uppercase; letter-spacing: 0.02em; font-size: 12px; }
.meta .type { color: var(--muted); }
.pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 1px 7px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.pill.live { background: var(--live-bg); color: #fff; }
.pill.live::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: #fff; animation: pulse 1.6s ease-in-out infinite; }
.pill.next { background: var(--surface-2); color: var(--text); }
.pill.ticket { background: var(--warn-bg); color: var(--warn-ink); }
.pill.remote { background: var(--surface-2); color: var(--muted); }
.who .remote { color: var(--muted); font-weight: 400; }
@keyframes pulse { 50% { opacity: 0.3; } }

.card h3 { margin: 4px 0 2px; font-size: 17px; line-height: 1.3; font-weight: 650; letter-spacing: -0.005em; }
.who { margin: 2px 0 0; font-size: 14px; color: var(--muted); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.who b { font-weight: 600; color: var(--text); }
.tags { display: flex; flex-wrap: wrap; gap: 4px 10px; margin-top: 8px; font-size: 12px; color: var(--muted); }
.tag { display: inline-flex; align-items: center; gap: 5px; }
.tag::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--c, var(--faint)); }
.linkish { border: 0; background: none; padding: 0; color: inherit; font: inherit; text-decoration: underline; text-align: left; }
.conflict { margin-top: 8px; padding: 6px 8px; border-radius: 8px; background: var(--warn-bg); color: var(--warn-ink); font-size: 13px; }
.snippet { margin: 6px 0 0; font-size: 13px; color: var(--muted); }
mark { background: var(--mark); color: var(--text); border-radius: 2px; padding: 0 1px; }

.star-btn {
  display: grid;
  place-items: center;
  width: 48px;
  min-height: 48px;
  border: 0;
  background: transparent;
  color: var(--faint);
  align-self: flex-start;
  margin: 2px 2px 0 0;
  border-radius: 50%;
}
.star-btn svg { width: 24px; height: 24px; }
.star-btn[aria-pressed="true"] { color: var(--accent); }
.star-btn[aria-pressed="true"] svg { fill: currentColor; }

.now-line {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 4px 0 10px;
  color: var(--live);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  scroll-margin-top: calc(var(--bar-h) + 8px);
}
.now-line::before, .now-line::after { content: ""; height: 2px; background: var(--live); }
.now-line::before { width: 10px; }
.now-line::after { flex: 1; }

.empty { padding: 32px 8px; text-align: center; color: var(--muted); }
.empty h2 { margin: 0 0 6px; font-size: 18px; color: var(--text); }
.empty p { margin: 0 0 14px; }
.empty .actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  color: var(--text);
}
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn svg { width: 20px; height: 20px; }

.now-btn {
  position: fixed;
  right: max(16px, env(safe-area-inset-right));
  bottom: calc(16px + env(safe-area-inset-bottom));
  z-index: 15;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 48px;
  padding: 0 18px 0 14px;
  border: 0;
  border-radius: 24px;
  background: var(--text);
  color: var(--bg);
  font-size: 15px;
  font-weight: 700;
  box-shadow: 0 6px 20px rgb(0 0 0 / 25%);
}

.footer {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter) calc(88px + env(safe-area-inset-bottom));
  font-size: 13px;
  color: var(--muted);
}
.footer p { margin: 4px 0; }

/* ---------- Sheets (dialogs) ---------- */
.sheet {
  position: fixed;
  inset: auto 0 0 0;
  width: 100%;
  max-width: var(--maxw);
  max-height: 92vh;
  max-height: 92dvh;
  margin: 0 auto;
  padding: 0;
  border: 0;
  border-radius: 18px 18px 0 0;
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--sheet-shadow);
  overflow: hidden;
}
.sheet[open] { display: flex; flex-direction: column; animation: sheet-in 0.22s ease-out; }
.sheet::backdrop { background: rgb(0 0 0 / 45%); }
@keyframes sheet-in { from { transform: translateY(24px); opacity: 0.6; } }
@media (min-width: 800px) {
  .sheet { inset: 0; margin: auto; border-radius: 18px; max-height: 86vh; }
}

.sheet-head {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 6px 6px var(--gutter);
  border-bottom: 1px solid var(--border);
  flex: none;
}
.sheet-head h2 { flex: 1; margin: 0; font-size: 17px; }
.sheet-body { overflow-y: auto; overscroll-behavior: contain; padding: 14px var(--gutter) 20px; -webkit-overflow-scrolling: touch; }
.sheet-foot {
  display: flex;
  gap: 8px;
  padding: 10px var(--gutter) calc(10px + env(safe-area-inset-bottom));
  border-top: 1px solid var(--border);
  flex: none;
}
.sheet-foot .btn { flex: 1; }

/* Session detail */
.detail-when { flex: 1; margin: 0; font-size: 15px; color: var(--muted); font-variant-numeric: tabular-nums; }
.note { display: inline-block; padding: 3px 8px; border-radius: 6px; background: var(--surface-2); font-size: 13px; font-weight: 600; }
.note.warn { background: var(--warn-bg); color: var(--warn-ink); }
.small-links { margin: 4px 0 0; font-size: 14px; color: var(--muted); }
.detail-when b { color: var(--text); }
.detail-title { margin: 0 0 4px; font-size: 22px; line-height: 1.25; letter-spacing: -0.01em; }
.detail-lede { margin: 0 0 10px; font-size: 16px; color: var(--muted); }
.detail-facts { display: grid; grid-template-columns: auto 1fr; gap: 6px 12px; margin: 12px 0; font-size: 14px; }
.detail-facts dt { color: var(--muted); }
.detail-facts dd { margin: 0; }
.detail-notes { display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0; }
.detail-section { margin: 18px 0 8px; font-size: 13px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); }
.people { list-style: none; margin: 0; padding: 0; }
.person { display: flex; align-items: center; gap: 12px; padding: 8px 0; border-bottom: 1px solid var(--border); }
.person:last-child { border-bottom: 0; }
.avatar {
  position: relative;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--surface-2);
  flex: none;
  display: grid;
  place-items: center;
  overflow: hidden;
  font-size: 15px;
  font-weight: 700;
  color: var(--muted);
}
.avatar img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.person-text { flex: 1; min-width: 0; }
.person-name { font-weight: 650; }
.person-role { font-size: 13px; color: var(--muted); }
.person-more { margin-top: 2px; font-size: 13px; }
.person-more button { border: 0; background: none; padding: 4px 0; color: var(--accent); font-size: 13px; text-align: left; }
.desc p { margin: 0 0 10px; }
.desc h4 { margin: 16px 0 6px; font-size: 15px; }
.actions-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0 4px; }
.actions-row .btn { flex: 1 1 140px; white-space: nowrap; padding: 0 10px; }

/* Filters sheet */
.f-section { margin: 4px 0 18px; }
.f-section h3 { display: flex; align-items: baseline; justify-content: space-between; margin: 0 0 8px; font-size: 15px; }
.f-section h3 small { font-weight: 500; color: var(--muted); font-size: 13px; }
.f-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.f-venue { width: 100%; margin: 6px 0 0; font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; }
.f-search {
  width: 100%;
  height: 44px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg);
  font-size: 16px;
  margin-bottom: 6px;
}
.speaker-list { list-style: none; margin: 0; padding: 0; }
.speaker-list label {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 52px;
  padding: 6px 2px;
  border-bottom: 1px solid var(--border);
}
.speaker-list input { width: 22px; height: 22px; accent-color: var(--accent); flex: none; }
.speaker-list .s-text { flex: 1; min-width: 0; }
.speaker-list .s-name { font-weight: 600; }
.speaker-list .s-role { font-size: 13px; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.speaker-list .n { color: var(--muted); font-size: 13px; }
.more-btn { margin-top: 8px; }

/* Info sheet */
.info h3 { margin: 18px 0 6px; font-size: 15px; }
.info h3:first-child { margin-top: 0; }
.info p, .info li { font-size: 15px; }
.info ul { padding-left: 18px; margin: 6px 0; }
.venue { padding: 10px 0; border-bottom: 1px solid var(--border); }
.venue:last-child { border-bottom: 0; }
.venue b { display: block; }
.venue span { color: var(--muted); font-size: 14px; }

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(80px + env(safe-area-inset-bottom));
  z-index: 50;
  transform: translateX(-50%);
  padding: 10px 16px;
  border-radius: 12px;
  background: var(--text);
  color: var(--bg);
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 6px 20px rgb(0 0 0 / 25%);
}

.toast-act { margin-left: 10px; border: 0; background: none; color: inherit; font-weight: 800; text-decoration: underline; padding: 4px; }

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

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

@media (min-width: 600px) {
  .card h3 { font-size: 18px; }
}

/* Bigger hit areas for inline links in sheets, without changing the layout. */
.venue a, .small-links a, .detail-facts a, .status a { display: inline-block; padding: 12px 0; margin: -12px 0; }

/* Landscape phones and big zoom: don't let the sticky bar eat half the screen. */
@media (max-height: 450px) {
  .bar { position: static; }
  .group-head { top: 0; }
  html { scroll-padding-top: 44px; }
}