:root {
    --primary: #0984E3;
    --secondary: #74B9FF;
    --accent: #E17055;
    --background: #0D1B2A;
    --surface: #1B263B;
    --text: #E0E1DD;
    --text-dim: #778DA9;
    --radius: 12px;
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--background);
    color: var(--text);
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    overflow-x: hidden;
}

header {
    width: 100%;
    padding: 2rem;
    text-align: center;
    background: rgba(27, 38, 59, 0.5);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 2rem;
}

h1 {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--secondary), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
}

.controls {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    justify-content: center;
}

button, select {
    background: var(--surface);
    color: var(--text);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

button:hover, select:hover {
    background: #243049;
    border-color: var(--secondary);
    transform: translateY(-2px);
}

button.active {
    background: var(--primary);
    border-color: var(--primary);
}

#game-container {
    position: relative;
    background: var(--surface);
    padding: 2rem;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    flex-direction: column;
    align-items: center;
}

canvas {
    cursor: pointer;
    border-radius: 8px;
}

.status {
    margin-top: 1.5rem;
    font-size: 1.2rem;
    font-weight: 500;
    min-height: 1.5em;
}

.win-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(13, 27, 42, 0.8);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border-radius: 20px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.5s ease;
    backdrop-filter: blur(4px);
}

.win-overlay.visible {
    opacity: 1;
    pointer-events: all;
}

.win-overlay h2 {
    font-size: 3rem;
    color: #00B894;
    margin-bottom: 1rem;
}

footer {
    margin-top: auto;
    padding: 2rem;
    color: var(--text-dim);
    font-size: 0.9rem;
}

@media (max-width: 600px) {
    #game-container {
        padding: 1rem;
        width: 95vw;
    }
    canvas {
        max-width: 100%;
    }
}