:root {
  color-scheme: light dark;
  --bg: #f4f1ea;
  --bg-elev: #fffdf8;
  --ink: #1c1917;
  --muted: #78716c;
  --line: #e7e0d5;
  --accent: #0f766e;
  --accent-ink: #ecfdf5;
  --danger: #b91c1c;
  --warn: #b45309;
  --card: #ffffff;
  --shadow: 0 10px 30px rgba(28, 25, 23, 0.08);
  --radius: 18px;
  --tap: 48px;
  font-family: "PingFang TC", "Noto Sans TC", "Helvetica Neue", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12100e;
    --bg-elev: #1c1917;
    --ink: #f5f5f4;
    --muted: #a8a29e;
    --line: #292524;
    --accent: #2dd4bf;
    --accent-ink: #042f2e;
    --danger: #f87171;
    --warn: #fbbf24;
    --card: #1c1917;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: var(--bg); color: var(--ink); }
body { padding: 16px; }
button, input, select, textarea { font: inherit; }
button {
  min-height: var(--tap);
  padding: 0.75rem 1.1rem;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--bg-elev);
  color: var(--ink);
  cursor: pointer;
}
button.primary {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: transparent;
  font-weight: 600;
}
button.danger { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 35%, var(--line)); }
button:disabled { opacity: 0.5; cursor: not-allowed; }
.app {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  gap: 16px;
}
.hero {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: flex-end;
  justify-content: space-between;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  box-shadow: var(--shadow);
}
.hero h1 { margin: 0 0 4px; font-size: clamp(1.4rem, 2.5vw, 1.9rem); }
.hero p { margin: 0; color: var(--muted); line-height: 1.45; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; }
.grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 16px;
}
@media (max-width: 900px) {
  .grid { grid-template-columns: 1fr; }
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}
.card h2 { margin: 0 0 12px; font-size: 1.1rem; }
.banner {
  padding: 12px 14px;
  border-radius: 14px;
  background: color-mix(in srgb, var(--warn) 14%, var(--card));
  border: 1px solid color-mix(in srgb, var(--warn) 35%, var(--line));
  color: var(--ink);
  line-height: 1.45;
}
.banner.danger {
  background: color-mix(in srgb, var(--danger) 12%, var(--card));
  border-color: color-mix(in srgb, var(--danger) 35%, var(--line));
}
.banner.info {
  background: color-mix(in srgb, var(--accent) 12%, var(--card));
  border-color: color-mix(in srgb, var(--accent) 30%, var(--line));
}
.preview {
  width: 100%;
  aspect-ratio: 16 / 10;
  background: #0c0a09;
  border-radius: 16px;
  overflow: hidden;
  position: relative;
}
.preview video { width: 100%; height: 100%; object-fit: cover; background: #000; }
.badge {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(185, 28, 28, 0.9);
  color: white;
  font-weight: 700;
  display: none;
}
.badge.on { display: inline-flex; align-items: center; gap: 6px; }
.metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 12px;
}
.metric {
  background: var(--bg);
  border-radius: 14px;
  padding: 12px;
  text-align: center;
}
.metric .label { color: var(--muted); font-size: 0.85rem; }
.metric .value { font-size: 1.35rem; font-variant-numeric: tabular-nums; margin-top: 4px; }
.list { display: grid; gap: 10px; }
.item {
  display: grid;
  gap: 6px;
  padding: 12px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--bg);
  cursor: pointer;
  text-align: left;
}
.item:hover, .item.active { border-color: color-mix(in srgb, var(--accent) 50%, var(--line)); }
.item strong { font-size: 1.05rem; }
.item small { color: var(--muted); }
.field { display: grid; gap: 6px; margin-bottom: 12px; }
.field label { color: var(--muted); font-size: 0.9rem; }
.field input, .field select {
  min-height: var(--tap);
  padding: 0.6rem 0.8rem;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--bg-elev);
  color: var(--ink);
}
.row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.progress {
  height: 10px;
  border-radius: 999px;
  background: var(--line);
  overflow: hidden;
}
.progress > span {
  display: block;
  height: 100%;
  width: 0%;
  background: var(--accent);
}
.hidden { display: none !important; }
.footer-note { color: var(--muted); font-size: 0.85rem; line-height: 1.45; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0 0; }
.chip {
  font-size: 0.8rem;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--bg);
  border: 1px solid var(--line);
  color: var(--muted);
}
dialog {
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 0;
  background: var(--card);
  color: var(--ink);
  max-width: 520px;
  width: calc(100% - 24px);
}
dialog::backdrop { background: rgba(0,0,0,0.45); }
dialog .pad { padding: 18px; display: grid; gap: 12px; }

.version-banner {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-radius: 14px;
  border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--line));
  background: color-mix(in srgb, var(--accent) 10%, var(--card));
  font-size: 0.92rem;
}
.timeline {
  position: relative;
  height: 56px;
  border-radius: 12px;
  background: var(--bg);
  border: 1px solid var(--line);
  overflow: hidden;
  margin: 10px 0;
}
.timeline .pause {
  position: absolute;
  top: 0;
  bottom: 0;
  background: color-mix(in srgb, var(--muted) 25%, transparent);
}
.timeline .occ {
  position: absolute;
  top: 10px;
  height: 36px;
  border-radius: 8px;
  border: 0;
  cursor: pointer;
  color: var(--accent-ink);
  font-size: 0.75rem;
  padding: 0 6px;
  background: var(--accent);
}
.timeline .occ.alt { background: color-mix(in srgb, var(--accent) 65%, #2563eb); }
.timeline .occ.rejected { opacity: 0.35; text-decoration: line-through; }
.group-card {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px;
  background: var(--bg);
  display: grid;
  gap: 8px;
  margin-bottom: 10px;
}
details.limits {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 8px 12px;
  background: var(--bg);
}
details.limits summary { cursor: pointer; color: var(--muted); }