:root {
            --bg-color: #0b0e14;
            --card-bg: #1b2838; /* Steam Navy */
            --accent: #66c0f4; /* Steam Blue */
            --text: #ffffff;
            --vs-color: #ff4b2b;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: radial-gradient(circle at center, #1b2838 0%, #0b0e14 100%);
            color: var(--text);
            margin: 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            min-height: 100vh;
        }

        header {
            text-align: center;
            padding: 2rem;
        }

        header h1 {
            margin: 0;
            font-size: 3rem;
            letter-spacing: -1px;
            background: linear-gradient(to right, #66c0f4, #4e82f3);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .matchup-container {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 2rem;
            width: 90%;
            max-width: 1000px;
            margin-top: 2rem;
        }

        .game-card {
            background: var(--card-bg);
            border: 2px solid transparent;
            border-radius: 12px;
            padding: 2rem;
            width: 300px;
            height: 200px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 10px 30px rgba(0,0,0,0.5);
            font-size: 1.5rem;
            font-weight: bold;
            position: relative;
            overflow: hidden;
        }

        .game-card:hover {
            transform: translateY(-10px);
            border-color: var(--accent);
            box-shadow: 0 15px 40px rgba(102, 192, 244, 0.3);
        }

        .vs-badge {
            font-size: 2rem;
            font-style: italic;
            font-weight: 900;
            color: var(--vs-color);
            text-shadow: 0 0 10px rgba(255, 75, 43, 0.5);
        }

        .controls {
            margin-top: 3rem;
            display: flex;
            gap: 1rem;
        }

        button.skip {
            background: transparent;
            border: 1px solid #555;
            color: #aaa;
            padding: 0.8rem 1.5rem;
            border-radius: 20px;
            cursor: pointer;
            transition: 0.2s;
        }

        button.skip:hover {
            border-color: white;
            color: white;
        }

        .leaderboard {
            margin-top: 4rem;
            width: 100%;
            max-width: 600px;
            background: rgba(0,0,0,0.3);
            padding: 1rem;
            border-radius: 8px;
            margin-bottom: 4rem;
        }

        .leaderboard h2 {
            text-align: center;
            border-bottom: 1px solid #333;
            padding-bottom: 1rem;
        }

        .rank-item {
            display: flex;
            justify-content: space-between;
            padding: 0.8rem;
            border-bottom: 1px solid #222;
        }

        .rank-item span:first-child {
            color: var(--accent);
            font-weight: bold;
            margin-right: 1rem;
        }

        .elo-tag {
            color: #888;
            font-size: 0.9rem;
        }