body {
    font-family: 'Segoe UI', system-ui, sans-serif;
    overflow-x: hidden;
}

.level-card {
    background: #1a1a2e;
    border: 2px solid #333;
    border-radius: 12px;
    padding: 1.2rem;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s, transform 0.15s;
}
.level-card:hover {
    border-color: #dc3545;
    transform: scale(1.03);
}
.level-card.locked {
    opacity: 0.4;
    cursor: not-allowed;
}
.level-card.locked:hover {
    transform: none;
    border-color: #333;
}

.medal-icon {
    font-size: 1.5rem;
}

#game-container canvas {
    display: block;
    margin: 0 auto;
}