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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: #1a1a1a;
    color: #e0e0e0;
    overflow: hidden;
    position: relative;
}

#version {
    position: fixed;
    top: 10px;
    left: 10px;
    background: rgba(0, 0, 0, 0.7);
    color: #fff;
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: bold;
    z-index: 10000;
    pointer-events: none;
}

#container {
    display: flex;
    width: 100vw;
    height: 100vh;
}

#canvas {
    flex: 1;
    display: block;
    background: #000;
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
}

#controls {
    width: 300px;
    padding: 20px;
    background: #2a2a2a;
    overflow-y: auto;
    border-left: 1px solid #444;
}

#controls h2 {
    margin-bottom: 20px;
    color: #fff;
    font-size: 18px;
    border-bottom: 2px solid #444;
    padding-bottom: 10px;
}

#controls label {
    display: block;
    margin-bottom: 15px;
    font-size: 14px;
}

#controls label select,
#controls label input[type="number"],
#controls label input[type="color"],
#controls label input[type="range"] {
    width: 100%;
    padding: 8px;
    margin-top: 5px;
    background: #333;
    border: 1px solid #555;
    border-radius: 4px;
    color: #e0e0e0;
    font-size: 14px;
}

#controls label input[type="checkbox"] {
    margin-left: 10px;
    width: 20px;
    height: 20px;
    cursor: pointer;
}

#controls label input[type="range"] {
    padding: 0;
    height: 6px;
}

#info {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #444;
}

#info p {
    margin-bottom: 10px;
    font-size: 14px;
}

#info span {
    font-weight: bold;
    color: #4CAF50;
}

#bgAlphaValue {
    margin-left: 10px;
    color: #888;
}