:root {
  --bg: #0f172a;
  --panel: #111827;
  --accent: #2563eb;
  --accent-2: #14b8a6;
  --danger: #ef4444;
  --text: #e5e7eb;
  --muted: #94a3b8;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Ubuntu, Helvetica Neue, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
}

.app {
  height: 100vh;
  height: 100dvh;
  display: flex;
  flex-direction: column;
}

.top {
  padding: 12px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #0b1220;
  border-bottom: 1px solid rgba(148, 163, 184, 0.2);
}

.title {
  font-weight: 700;
  font-size: 18px;
}

.status {
  font-size: 14px;
  color: var(--muted);
}

.stage {
  position: relative;
  flex: 1 1 auto;
  min-height: 0;
  background: #020617;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 12px;
  overflow: hidden;
}

.video {
  width: 100%;
  height: 100%;
  flex: 1 1 0;
  min-height: 0;
  background: #0b1220;
  border-radius: 16px;
  object-fit: cover;
}

.remote {
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.local {
  border: 2px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
}

.hint {
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(15, 23, 42, 0.8);
  color: #e2e8f0;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 13px;
}

.hidden { display: none; }

.controls {
  padding: 12px;
  background: #0b1220;
  border-top: 1px solid rgba(148, 163, 184, 0.2);
  flex: 0 0 auto;
}

.primary {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.toggles {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.btn {
  padding: 9px 12px;
  border-radius: 10px;
  border: 0;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
}

.btn.primary { background: var(--accent); color: #fff; }
.btn.secondary { background: var(--accent-2); color: #041b17; }
.btn.danger { background: var(--danger); color: #fff; }
.btn.ghost { background: #1e293b; color: #e2e8f0; }
.btn:disabled { opacity: 0.6; cursor: not-allowed; }

@media (max-width: 540px) {
  .top { padding: 10px 12px; }
  .title { font-size: 16px; }
  .status { font-size: 12px; }
  .controls { padding: 10px; }
  .btn { font-size: 13px; padding: 8px 10px; }
}

@media (max-height: 700px) {
  .stage { padding: 10px; gap: 8px; }
  .controls { padding: 8px; }
  .btn { font-size: 12px; }
}