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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background-color: #1a1a1a;
    color: #ffffff;
}

#app {
    width: 100vw;
    height: 100vh;
    overflow: hidden;
}

#viewer {
    width: 100%;
    height: 100%;
    position: relative;
}

#file-input {
    position: absolute;
    top: 20px;
    left: 20px;
    z-index: 100;
    background: rgba(0, 0, 0, 0.7);
    padding: 15px;
    border-radius: 8px;
    backdrop-filter: blur(10px);
}

.upload-btn {
    display: inline-block;
    padding: 8px 16px;
    background: #4CAF50;
    color: white;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.3s;
}

.upload-btn:hover {
    background: #45a049;
}

.file-info {
    margin-top: 8px;
    font-size: 0.8em;
    color: #aaa;
}

#stats {
    position: absolute;
    top: 20px;
    right: 20px;
    z-index: 100;
    background: rgba(0, 0, 0, 0.7);
    padding: 10px 15px;
    border-radius: 8px;
    backdrop-filter: blur(10px);
}

.stat-item {
    font-size: 14px;
    color: #fff;
}

#debug-info {
    position: absolute;
    bottom: 80px;
    left: 20px;
    right: 20px;
    z-index: 100;
    background: rgba(0, 0, 0, 0.7);
    padding: 10px;
    border-radius: 8px;
    backdrop-filter: blur(10px);
    max-height: 200px;
    overflow-y: auto;
    font-family: monospace;
    font-size: 12px;
    color: #fff;
}

#debug-info div {
    margin: 2px 0;
}

#controls {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 100;
    background: rgba(0, 0, 0, 0.7);
    padding: 10px;
    border-radius: 8px;
    backdrop-filter: blur(10px);
    display: flex;
    gap: 10px;
}

.control-btn {
    padding: 8px 16px;
    background: #2196F3;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.3s;
}

.control-btn:hover {
    background: #1976D2;
}