body, html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: #000;
    color: white;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

canvas {
    width: 100%;
    height: 100%;
    display: block;
}

.back-link {
    position: absolute;
    top: 20px;
    left: 20px;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 16px;
    z-index: 10;
    background: rgba(0, 0, 0, 0.3);
    padding: 8px 12px;
    border-radius: 4px;
    transition: background 0.3s;
}

.back-link:hover {
    background: rgba(0, 0, 0, 0.6);
    color: white;
}

.controls {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 250px;
    background: rgba(0, 0, 0, 0.5);
    padding: 20px;
    border-radius: 8px;
    backdrop-filter: blur(5px);
    pointer-events: auto;
}

.controls h1 {
    font-size: 20px;
    margin-top: 0;
    margin-bottom: 10px;
}

.controls p {
    font-size: 14px;
    margin-bottom: 20px;
    color: #ccc;
}

.control-group {
    margin-bottom: 15px;
}

.control-group label {
    display: block;
    font-size: 12px;
    margin-bottom: 5px;
    color: #aaa;
}

.control-group input {
    width: 100%;
}

button {
    width: 100%;
    padding: 10px;
    background: #333;
    color: white;
    border: 1px solid #555;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.3s;
}

button:hover {
    background: #444;
}