* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; background: #121212; color: #fff; height: 100vh; overflow: hidden; display: flex; flex-direction: column; }
.container { display: flex; flex-direction: column; height: 100%; padding: 20px; }
header { display: flex; justify-content: space-between; align-items: center; padding-bottom: 20px; border-bottom: 1px solid #333; margin-bottom: 20px; }
h1 { font-size: 1.5rem; color: #4CAF50; }
#room-info { display: flex; gap: 15px; align-items: center; font-size: 0.9rem; color: #ccc; }
button { background: #333; color: white; border: none; padding: 8px 16px; border-radius: 6px; cursor: pointer; transition: 0.2s; font-size: 0.9rem; }
button:hover { background: #444; }
.video-grid { flex: 1; display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; justify-content: center; align-items: center; overflow-y: auto; }
.video-container { position: relative; background: #000; border-radius: 12px; overflow: hidden; aspect-ratio: 16/9; display: flex; align-items: center; justify-content: center; border: 2px solid #333; }
.video-container.local { border-color: #4CAF50; }
video { width: 100%; height: 100%; object-fit: cover; }
.label { position: absolute; bottom: 10px; left: 10px; background: rgba(0,0,0,0.6); padding: 4px 8px; border-radius: 4px; font-size: 0.8rem; }
.controls { display: flex; justify-content: center; gap: 20px; padding-top: 20px; }
.controls button { padding: 12px 24px; font-size: 1rem; border-radius: 50px; display: flex; align-items: center; gap: 8px; }
.controls button.muted { background: #E53935; color: white; }