* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.game-container {
    text-align: center;
    color: #fff;
}

h1 {
    margin-bottom: 20px;
    font-size: 2.5rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

#gameCanvas {
    background: #000;
    border: 3px solid #4a90d9;
    border-radius: 8px;
    box-shadow: 0 0 20px rgba(74, 144, 217, 0.5);
    display: block;
    margin: 0 auto 20px;
}

.score-board {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 20px;
    font-size: 1.2rem;
}

.score-board span {
    background: rgba(255, 255, 255, 0.1);
    padding: 8px 20px;
    border-radius: 20px;
}

#combo {
    color: #f1c40f;
    font-weight: bold;
}

#combo.active {
    animation: pulse 0.3s ease;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.3); }
    100% { transform: scale(1); }
}

.controls {
    color: #aaa;
}

.controls p {
    margin-bottom: 15px;
}

button {
    background: #4a90d9;
    color: white;
    border: none;
    padding: 12px 30px;
    font-size: 1rem;
    border-radius: 25px;
    cursor: pointer;
    margin: 5px;
    transition: all 0.3s ease;
}

button:hover {
    background: #357abd;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(74, 144, 217, 0.4);
}

button:active {
    transform: translateY(0);
}