:root {
  --bg: #06070b;
  --panel: rgba(16, 18, 28, 0.72);
  --text: #e8eaf2;
  --muted: #8b91a6;
  --border: rgba(255, 255, 255, 0.08);
  --accent: #5cc8ff;
  --accent-2: #c77dff;
  --pink: #ff6fb5;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font: 14px/1.4 system-ui, -apple-system, "Segoe UI", sans-serif;
  background:
    radial-gradient(1200px 600px at 15% -10%, rgba(92, 200, 255, 0.10), transparent 60%),
    radial-gradient(1000px 600px at 90% 0%, rgba(255, 111, 181, 0.08), transparent 60%),
    var(--bg);
}

header {
  position: sticky;
  top: 0;
  z-index: 5;
  padding: 10px 16px;
  background: var(--panel);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  align-items: center;
}

h1 {
  font-size: 15px;
  margin: 0;
  font-weight: 700;
  letter-spacing: 0.02em;
  background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--pink));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.controls { display: flex; flex-wrap: wrap; gap: 6px 8px; align-items: center; }
.controls label {
  display: flex; gap: 6px; align-items: center;
  color: var(--muted);
  font-size: 12px;
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
}
.controls output { color: var(--text); min-width: 3.2em; font-variant-numeric: tabular-nums; }
.controls select, .controls input { accent-color: var(--accent); }
.controls select {
  background: transparent; color: var(--text);
  border: 0; font: inherit; font-size: 12px; padding: 0; cursor: pointer;
}
.controls select option { background: #11131c; }
.controls input[type=range] { width: 90px; }
.controls input:disabled { opacity: 0.35; }
.status { color: var(--muted); font-size: 12px; font-variant-numeric: tabular-nums; margin-left: auto; }

main {
  max-width: 1400px;
  margin: 0 auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.video {
  width: 100%;
  max-width: 560px;
  margin: 0 auto;
  aspect-ratio: 16 / 9;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5), 0 0 0 1px var(--border);
}
.video iframe, #player { width: 100%; height: 100%; border: 0; display: block; }

.stem { display: flex; gap: 12px; align-items: center; justify-content: center; flex-wrap: wrap; color: var(--muted); font-size: 12px; }
.stem[hidden] { display: none; }
.stem audio { width: min(560px, 100%); }

#stage {
  width: 100%;
  height: clamp(340px, 62vh, 640px);
  display: block;
  border-radius: 14px;
  background: #07080d;
  box-shadow:
    0 0 0 1px var(--border),
    0 20px 60px rgba(0, 0, 0, 0.6),
    0 0 80px rgba(92, 200, 255, 0.06);
}

@media (max-width: 640px) {
  header { position: static; }
  main { padding: 12px 16px; }
  .status { margin-left: 0; }
}