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

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

.container {
    background: white;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    max-width: 500px;
    width: 100%;
}

.header {
    text-align: center;
    margin-bottom: 20px;
}

.header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    color: #667eea;
}

.info {
    display: flex;
    justify-content: space-around;
    font-size: 1.1em;
    color: #666;
}

.info span {
    font-weight: bold;
}

.game-wrapper {
    display: flex;
    justify-content: center;
    margin: 20px 0;
    border: 3px solid #667eea;
    border-radius: 10px;
    overflow: hidden;
}

#gameCanvas {
    display: block;
    background: #f0f0f0;
    max-width: 100%;
    height: auto;
}

.controls {
    display: flex;
    gap: 10px;
    margin: 20px 0;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 24px;
    font-size: 1em;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s ease;
}

.btn-primary {
    background: #667eea;
    color: white;
}

.btn-primary:hover {
    background: #5568d3;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: #48bb78;
    color: white;
}

.btn-secondary:hover {
    background: #38a169;
    transform: translateY(-2px);
}

.btn-danger {
    background: #f56565;
    color: white;
}

.btn-danger:hover {
    background: #e53e3e;
    transform: translateY(-2px);
}

.instructions {
    background: #f7fafc;
    padding: 20px;
    border-radius: 10px;
    margin-top: 20px;
}

.instructions h3 {
    color: #667eea;
    margin-bottom: 10px;
}

.instructions ul {
    list-style: none;
}

.instructions li {
    padding: 8px 0;
    color: #4a5568;
    border-bottom: 1px solid #e2e8f0;
}

.instructions li:last-child {
    border-bottom: none;
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal.hidden {
    display: none;
}

.modal-content {
    background: white;
    padding: 40px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.modal-content h2 {
    color: #667eea;
    font-size: 2em;
    margin-bottom: 20px;
}

.modal-content p {
    font-size: 1.2em;
    margin: 10px 0;
    color: #666;
}

.modal-content span {
    color: #f56565;
    font-weight: bold;
}

@media (max-width: 480px) {
    .container {
        padding: 15px;
    }
    
    .header h1 {
        font-size: 1.8em;
    }
    
    .info {
        flex-direction: column;
        gap: 10px;
    }
}