body {
    margin: 0;
    padding: 20px;
    font-family: 'Arial', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.game-container {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    padding: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    text-align: center;
    max-width: 900px;
    width: 100%;
}

.game-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
    font-size: 24px;
    font-weight: bold;
}

.score-display, .timer-display {
    background: #4CAF50;
    color: white;
    padding: 10px 20px;
    border-radius: 25px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.timer-display {
    background: #FF9800;
}

#gameCanvas {
    border: 3px solid #333;
    border-radius: 10px;
    background: #f0f0f0;
    cursor: crosshair;
    display: block;
    margin: 0 auto 20px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.game-controls {
    margin-bottom: 20px;
}

button {
    background: #2196F3;
    color: white;
    border: none;
    padding: 12px 24px;
    margin: 0 10px;
    border-radius: 25px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

button:hover {
    background: #1976D2;
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3);
}

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

button:disabled {
    background: #ccc;
    cursor: not-allowed;
    transform: none;
}

.instructions {
    color: #666;
    font-size: 16px;
    margin-top: 10px;
}

.game-over {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    font-size: 24px;
    display: none;
}

.game-over h2 {
    margin: 0 0 15px 0;
    color: #FFD700;
}

.game-over p {
    margin: 10px 0;
    font-size: 18px;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

.pulse {
    animation: pulse 0.3s ease-in-out;
}