#game-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    min-height: 80vh;
}

#sketch-holder {
    width: 800px;
    height: 600px;
    z-index: 1;
    margin: 0 auto;
    padding: 20px;
    background: linear-gradient(135deg, #1a1a1a 0%, #2a2a2a 100%);
    border: 2px solid #4CAF50;
    border-radius: 10px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    position: relative;
    overflow: hidden;
    cursor: crosshair;
    transition: border-color 0.3s ease;
    min-height: 600px;
}

/* Ensure canvas is visible */
#sketch-holder canvas {
    display: block !important;
    width: 100% !important;
    height: 100% !important;
}

#sketch-holder:focus-within {
    border-color: #66ff66;
    box-shadow: 0 8px 32px rgba(76, 175, 80, 0.4);
}

#sketch-holder::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(76, 175, 80, 0.1) 50%, transparent 70%);
    pointer-events: none;
    animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
    0%, 100% { opacity: 0; }
    50% { opacity: 1; }
}

/* Score panel styles are now in global styles.css */

button {
    transition: all 0.3s ease;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(76, 175, 80, 0.3);
}

button:active {
    transform: translateY(0);
}

h3 {
    color: #4CAF50;
    margin: 0 0 10px 0;
    font-size: 24px;
}

p {
    color: #ccc;
    margin: 0;
    line-height: 1.5;
}