:root {
  --bg: var(--tg-theme-bg-color, #ffffff);
  --fg: var(--tg-theme-text-color, #1c1c1e);
  --muted: var(--tg-theme-hint-color, #6b7280);
  --card: var(--tg-theme-secondary-bg-color, #f3f4f6);
  --accent: var(--tg-theme-button-color, #2563eb);
  --accent-fg: var(--tg-theme-button-text-color, #ffffff);
  --danger: #dc2626;
  --ok: #16a34a;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: var(--tg-theme-bg-color, #111318);
    --fg: var(--tg-theme-text-color, #f3f4f6);
    --muted: var(--tg-theme-hint-color, #9ca3af);
    --card: var(--tg-theme-secondary-bg-color, #1c1f27);
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; } /* author display rules would otherwise override the attribute */
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.4 system-ui, -apple-system, sans-serif; padding-bottom: calc(96px + env(safe-area-inset-bottom)); }
header { padding: 14px 16px 4px; display: flex; justify-content: space-between; align-items: baseline; gap: 8px; }
header h1 { font-size: 20px; margin: 0; }
main { padding: 8px 16px; max-width: 720px; margin: 0 auto; }
h2 { font-size: 18px; margin: 12px 0 8px; }
.muted { color: var(--muted); }
.center { text-align: center; }
.error { color: var(--danger); margin: 4px 0; min-height: 1.2em; }
.ok { color: var(--ok); }
small { font-size: 13px; }

nav#tabs { position: fixed; bottom: 0; left: 0; right: 0; display: flex; background: var(--card); padding-bottom: env(safe-area-inset-bottom); border-top: 1px solid rgba(128,128,128,.25); }
nav#tabs button { flex: 1; padding: 14px 0; background: none; border: 0; color: var(--muted); font: inherit; font-weight: 600; }
nav#tabs button.active { color: var(--accent); }

button { font: inherit; cursor: pointer; }
button.primary, a.primary { background: var(--accent); color: var(--accent-fg); border: 0; border-radius: 10px; padding: 10px 16px; font-weight: 600; text-decoration: none; display: inline-block; }
button.ghost { background: none; color: var(--accent); border: 1px solid var(--accent); border-radius: 10px; padding: 9px 14px; font-weight: 600; }
button.small { padding: 6px 12px; font-size: 14px; }
button.danger { color: var(--danger); border-color: var(--danger); }
button.joined { background: var(--ok); }

.chips { display: flex; gap: 8px; overflow-x: auto; padding: 4px 0 8px; }
.chip { flex: none; border: 1px solid rgba(128,128,128,.4); background: none; color: var(--fg); border-radius: 999px; padding: 6px 14px; }
.chip.active { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); }
.toolbar { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin: 4px 0 8px; flex-wrap: wrap; }

.card { background: var(--card); border-radius: 14px; padding: 12px 14px; margin-bottom: 10px; }
.card .time { font-weight: 700; font-variant-numeric: tabular-nums; }
.card h3 { margin: 2px 0 4px; font-size: 17px; }
.card p { margin: 4px 0; }
.badge { display: inline-block; font-size: 12px; padding: 1px 8px; border-radius: 999px; background: rgba(128,128,128,.25); color: var(--muted); margin-left: 6px; vertical-align: middle; }
.badge.official { background: var(--accent); color: var(--accent-fg); }
.actions { display: flex; gap: 8px; margin-top: 8px; flex-wrap: wrap; align-items: center; }
.avatar { position: relative; display: inline-flex; align-items: center; justify-content: center; flex: none; border-radius: 50%; color: #fff; font-weight: 700; overflow: hidden; vertical-align: middle; }
.avatar img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.person-head { display: flex; align-items: center; gap: 12px; margin-bottom: 4px; }
.person-head h3 { margin: 0; }
.faces { display: flex; margin: 6px 0 2px 6px; }
.faces .avatar { margin-left: -6px; border: 2px solid var(--card); }
.room-badge { margin-left: auto; flex: none; background: var(--accent); color: var(--accent-fg); border-radius: 12px; padding: 2px 12px; font-size: 26px; font-weight: 800; line-height: 1.3; font-variant-numeric: tabular-nums; }
.person-head h3 { min-width: 0; overflow-wrap: anywhere; }
.mates { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.mates .avatar + .avatar { margin-left: -14px; }
.mates span:last-child { margin-left: 4px; }
.room-num { font-size: 44px; font-weight: 800; line-height: 1.1; color: var(--accent); font-variant-numeric: tabular-nums; }
.room-members { display: flex; flex-wrap: wrap; gap: 8px 14px; margin-top: 6px; }
.room-members .member { display: inline-flex; align-items: center; gap: 6px; }
.party { background: rgba(128,128,128,.18); border-radius: 10px; padding: 6px 10px; }
.dinner-card .tally { display: flex; flex-wrap: wrap; gap: 4px 14px; margin: 4px 0 8px; }
.tally-item b { font-size: 22px; }
.bar { display: flex; height: 10px; border-radius: 999px; overflow: hidden; background: rgba(128,128,128,.25); margin-bottom: 8px; }
.bar .seg.yes { background: var(--ok); }
.bar .seg.maybe { background: #d97706; }
.bar .seg.no { background: var(--danger); }
.bar .seg.none { background: rgba(128,128,128,.35); }
.dinner-card summary { cursor: pointer; list-style: none; position: relative; padding-right: 22px; }
.dinner-card summary::-webkit-details-marker { display: none; }
.dinner-card summary::after { content: '▸'; position: absolute; right: 2px; top: 0; color: var(--muted); transition: transform .15s; }
.dinner-card[open] summary::after { transform: rotate(90deg); }
.dinner-title { display: block; font-weight: 700; font-size: 17px; }
.dinner-brief { display: block; margin: 2px 0 8px; font-variant-numeric: tabular-nums; }
.dinner-card .bar { margin-bottom: 2px; }
.dinner-card[open] summary { margin-bottom: 8px; }
.dinner-card p { margin: 6px 0; }
.me-card { outline: 2px solid var(--accent); }

form label { display: block; margin: 10px 0; font-weight: 600; font-size: 14px; }
form label.check { font-weight: 400; font-size: 16px; }
input:not([type=radio]):not([type=checkbox]), textarea { display: block; width: 100%; margin-top: 4px; padding: 10px; font: inherit; color: var(--fg); background: var(--bg); border: 1px solid rgba(128,128,128,.4); border-radius: 10px; }
.row { display: flex; gap: 10px; }
.row > * { flex: 1; min-width: 0; }
@media (max-width: 520px) { .row.stack { flex-direction: column; gap: 0; } }
input[type=datetime-local], input[type=date], input[type=time] { min-height: 44px; -webkit-appearance: none; appearance: none; }
fieldset { border: 0; padding: 0; margin: 10px 0; }
fieldset legend { font-weight: 600; font-size: 14px; padding: 0; }
fieldset label { display: inline-block; margin-right: 16px; font-weight: 400; font-size: 16px; }

dialog { border: 0; border-radius: 16px; padding: 16px; width: min(92vw, 480px); background: var(--bg); color: var(--fg); }
dialog::backdrop { background: rgba(0,0,0,.5); }
dialog h2 { margin-top: 0; }