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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1a2a6c, #b21f1f, #1a2a6c);
    color: white;
    min-height: 100vh;
    overflow: hidden;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: rgba(0, 0, 0, 0.7);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
}

header h1 {
    font-size: 1.8rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

header a {
    color: #ffcc00;
    text-decoration: none;
    font-weight: bold;
    padding: 0.5rem 1rem;
    border: 2px solid #ffcc00;
    border-radius: 4px;
    transition: all 0.3s ease;
}

header a:hover {
    background: #ffcc00;
    color: #1a2a6c;
}

.container {
    display: flex;
    height: calc(100vh - 120px);
    padding: 1rem;
    gap: 1rem;
}

.controls {
    width: 250px;
    background: rgba(0, 0, 0, 0.7);
    border-radius: 10px;
    padding: 1.5rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.6);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.control-group, .stats {
    background: rgba(30, 30, 50, 0.8);
    padding: 1rem;
    border-radius: 8px;
}

.control-group h2, .stats h2 {
    margin-bottom: 1rem;
    color: #ffcc00;
    text-align: center;
}

.control-group p, .stats p {
    margin: 0.5rem 0;
    line-height: 1.4;
}

.stats p {
    font-size: 1.1rem;
}

.canvas-container {
    flex: 1;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.7);
    background: #0a0a1a;
}

#gameCanvas {
    width: 100%;
    height: 100%;
    display: block;
}

footer {
    text-align: center;
    padding: 1rem;
    background: rgba(0, 0, 0, 0.8);
    color: #aaa;
    font-size: 0.9rem;
}

/* Responsive design */
@media (max-width: 768px) {
    .container {
        flex-direction: column;
        height: auto;
    }
    
    .controls {
        width: 100%;
    }
    
    header {
        flex-direction: column;
        gap: 1rem;
    }
}