.game-container {
            max-width: 1200px;
            margin: 30px auto;
            padding: 20px;
        }
        .card {
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.3);
            background: rgba(255,255,255,0.95);
        }
        .game-board {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
            max-width: 400px;
            margin: 0 auto;
            padding: 20px;
        }
        .cell {
            aspect-ratio: 1;
            background: linear-gradient(145deg, #f0f0f0, #ffffff);
            border: 3px solid #667eea;
            border-radius: 10px;
            font-size: 3rem;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .cell:hover:not(.taken) {
            background: linear-gradient(145deg, #e8e8ff, #f0f0ff);
            transform: scale(1.05);
        }
        .cell.taken {
            cursor: not-allowed;
        }
        .cell.x {
            color: #667eea;
            animation: popIn 0.3s ease;
        }
        .cell.o {
            color: #764ba2;
            animation: popIn 0.3s ease;
        }
        @keyframes popIn {
            0% { transform: scale(0); }
            50% { transform: scale(1.2); }
            100% { transform: scale(1); }
        }
        .scoreboard {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 20px;
            border-radius: 10px;
            margin-bottom: 20px;
        }
        .player-card {
            background: rgba(255,255,255,0.2);
            padding: 15px;
            border-radius: 8px;
            margin: 10px 0;
        }
        .player-card.active {
            background: rgba(255,255,255,0.4);
            border: 2px solid white;
        }
        .move-history {
            max-height: 300px;
            overflow-y: auto;
        }
        .celebration {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.8);
            display: none;
            align-items: center;
            justify-content: center;
            z-index: 9999;
        }
        .celebration.show {
            display: flex;
        }
        .celebration-content {
            background: white;
            padding: 40px;
            border-radius: 20px;
            text-align: center;
            animation: bounceIn 0.5s ease;
        }
        @keyframes bounceIn {
            0% { transform: scale(0); }
            50% { transform: scale(1.1); }
            100% { transform: scale(1); }
        }
        .confetti {
            position: fixed;
            width: 10px;
            height: 10px;
            background: #f0f;
            position: absolute;
            animation: confetti-fall 3s linear;
        }
        @keyframes confetti-fall {
            to { transform: translateY(100vh) rotate(360deg); }
        }
        .share-link {
            background: #f8f9fa;
            padding: 10px;
            border-radius: 5px;
            word-break: break-all;
        }