:root {
  color-scheme: dark;
  --bg: #0d1117;
  --surface: #161b22;
  --line: #30363d;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #2f81f7;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, sans-serif;
  background: var(--bg);
  color: var(--text);
}

main {
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px;
}

.top,
.viewer-head,
.actions,
.grid {
  display: flex;
  gap: 12px;
}

.top,
.viewer-head {
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}

.card {
  margin-top: 16px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
}

.pill {
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #010409;
}

.muted {
  color: var(--muted);
}

.notice {
  margin: 0 0 14px;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--line);
}

.notice-info {
  background: rgba(47, 129, 247, 0.12);
  color: #c9e3ff;
}

.notice-warn {
  background: rgba(210, 153, 34, 0.12);
  color: #ffd98a;
}

.notice-error {
  background: rgba(248, 81, 73, 0.12);
  color: #ffb3ad;
}

button {
  border: 0;
  border-radius: 10px;
  background: var(--accent);
  color: white;
  padding: 10px 14px;
  cursor: pointer;
  font-weight: 700;
}

button.secondary {
  background: #30363d;
}

.actions {
  flex-wrap: wrap;
  margin-top: 12px;
}

.video-frame {
  display: grid;
  place-items: center;
  min-height: 640px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #010409;
  overflow: hidden;
}

#video {
  width: 100%;
  max-width: 100%;
  min-height: 640px;
  object-fit: contain;
  display: block;
}

.viewer {
  padding-bottom: 24px;
}

.talkback-card {
  max-width: 420px;
}

@media (max-width: 900px) {
  main {
    padding: 16px;
  }

  .video-frame,
  #video {
    min-height: 320px;
  }
}