* { margin: 0; padding: 0; box-sizing: border-box; }
        body { background: #0d1117; color: #f0f6fc; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; height: 100vh; }
        .header { background: #161b22; border-bottom: 1px solid #30363d; padding: 1rem 2rem; display: flex; align-items: center; justify-content: space-between; }
        .header-left { display: flex; align-items: center; gap: 1rem; }
        .logo { width: 32px; height: 32px; background: linear-gradient(135deg, #0078ff, #4fc3f7); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: white; font-weight: bold; font-size: 18px; }
        .title { font-size: 1.5rem; font-weight: 600; }
        .user-info { display: flex; align-items: center; gap: 1rem; color: #7d8590; }
        .btn { background: #21262d; border: 1px solid #30363d; color: #f0f6fc; padding: 0.5rem 1rem; border-radius: 6px; cursor: pointer; text-decoration: none; font-size: 0.9rem; }
        .btn:hover { background: #30363d; }
        .btn-danger { background: #da3633; border-color: #da3633; }
        .btn-danger:hover { background: #b62324; }
        .login-container { height: 100vh; display: flex; align-items: center; justify-content: center; }
        .login-box { background: #21262d; padding: 3rem; border-radius: 12px; box-shadow: 0 8px 32px rgba(0,0,0,0.3); width: 100%; max-width: 400px; }
        .login-title { text-align: center; margin-bottom: 2rem; font-size: 1.8rem; font-weight: 600; }
        .form-group { margin-bottom: 1.5rem; }
        .form-label { display: block; margin-bottom: 0.5rem; font-weight: 500; color: #f0f6fc; }
        .form-input { width: 100%; padding: 0.75rem; background: #0d1117; border: 1px solid #30363d; border-radius: 6px; color: #f0f6fc; font-size: 1rem; }
        .form-input:focus { outline: none; border-color: #0078ff; }
        .btn-primary { background: #238636; border-color: #238636; width: 100%; padding: 0.75rem; font-size: 1rem; }
        .btn-primary:hover { background: #2ea043; }
        .error { background: #332022; color: #f85149; padding: 0.75rem; border-radius: 6px; margin-bottom: 1rem; text-align: center; }
        .sequence-input { display: none; }
        .sequence-btns { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.5rem; margin-bottom: 1rem; }
        .sequence-btn { background: #0d1117; border: 1px solid #30363d; color: #7d8590; padding: 0.5rem; border-radius: 4px; cursor: pointer; text-align: center; font-size: 0.9rem; }
        .sequence-btn:hover { background: #21262d; color: #f0f6fc; }
        .sequence-btn.active { background: #0078ff; color: white; }
        .stream-container { padding: 2rem; display: flex; justify-content: center; align-items: center; min-height: calc(100vh - 80px); }
        .stream-wrapper { background: #21262d; border-radius: 12px; padding: 2rem; box-shadow: 0 8px 32px rgba(0,0,0,0.3); max-width: 90vw; }
        .player-container { background: #000; border-radius: 8px; overflow: hidden; width: 800px; height: 600px; position: relative; }
        video { width: 100%; height: 100%; object-fit: cover; }
        .status { margin-top: 1rem; padding: 0.75rem; background: #0f2419; border-radius: 6px; font-family: 'SF Mono', Consolas, monospace; font-size: 0.9rem; color: #3fb950; }
        .loading { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); color: #7d8590; font-size: 1.1rem; }