:root { color-scheme: dark; font-family: system-ui, sans-serif; background: #111827; color: #f3f4f6; }
body { margin: 0; } .shell { max-width: 720px; margin: 10vh auto; padding: 24px; }
input, button { border: 1px solid #374151; border-radius: 8px; padding: 10px 12px; margin: 4px; background: #1f2937; color: inherit; }
button { cursor: pointer; } button:hover { background: #374151; } .muted, .message { color: #9ca3af; }
.row { display: flex; justify-content: space-between; align-items: center; } li { margin: 12px 0; }
video { display: block; width: 100%; max-height: 70vh; background: #000; border-radius: 8px; outline: none; }