:root {
    --primary: #ec4899;
    --secondary: #8b5cf6;
    --accent: #f59e0b;
    --bg: #f8fafc;
    --card-bg: #ffffff;
    --text: #1e293b;
    --text-secondary: #64748b;
    --border: #e2e8f0;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0f172a;
        --card-bg: #1e293b;
        --text: #f1f5f9;
        --text-secondary: #94a3b8;
        --border: #334155;
    }
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1rem;
    touch-action: none;
    user-select: none;
    -webkit-user-select: none;
}

.container {
    width: 100%;
    max-width: 600px;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: var(--card-bg);
    border-radius: 12px;
    border: 2px solid var(--border);
}

.header h1 {
    font-size: 1.5rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stats {
    display: flex;
    gap: 1.5rem;
    font-size: 1rem;
    color: var(--text-secondary);
}

.stats strong {
    color: var(--text);
    font-size: 1.1rem;
}

.game-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 4 / 5;
    background: var(--card-bg);
    border-radius: 12px;
    border: 2px solid var(--border);
    overflow: hidden;
}

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

.overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 1;
    transition: opacity 0.3s;
}

.overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.overlay-content {
    text-align: center;
    color: white;
    padding: 2rem;
}

.overlay-content h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.overlay-content p {
    margin-bottom: 1.5rem;
    color: #94a3b8;
}

.btn {
    padding: 0.75rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    color: white;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(236, 72, 153, 0.4);
}

.btn:active {
    transform: translateY(0);
}

.controls-info {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
    padding: 0.5rem;
}

@media (max-width: 480px) {
    body {
        padding: 0.5rem;
    }

    .header {
        padding: 0.75rem;
        flex-direction: column;
        gap: 0.5rem;
    }

    .header h1 {
        font-size: 1.25rem;
    }

    .stats {
        font-size: 0.9rem;
    }

    .game-wrapper {
        aspect-ratio: 3 / 4;
    }

    .overlay-content h2 {
        font-size: 1.5rem;
    }

    .controls-info {
        font-size: 0.8rem;
    }
}