html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
}

#app-container {
    width: 100%;
    height: 100%;
    position: relative;
}

#canvas-container {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
}

body { margin: 0; font-family: sans-serif; }
canvas { display: block; }
#ui-panel {
    position: absolute;
    top: 20px;
    right: 20px;
    padding: 20px;
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: 10px;
    width: 320px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    z-index: 10; /* Ставим панель поверх 3D сцены */
}
.control-group { margin-bottom: 20px; border-bottom: 1px solid #e0e0e0; padding-bottom: 20px; }
.control-group:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.control-row { display: flex; justify-content: space-between; align-items: center; margin-bottom: 15px; }
.control-row label { font-weight: bold; }
.control-row input[type="range"] { width: 160px; }
.control-row input[type="number"] { width: 60px; text-align: center; }
.control-row span { min-width: 40px; text-align: right; }
h3, h4 { margin-top: 0; margin-bottom: 15px; text-align: center; color: #333; }
#material-selector { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.material-swatch { width: 40px; height: 40px; border-radius: 50%; border: 2px solid #ccc; cursor: pointer; transition: transform 0.2s, border-color 0.2s; background-size: cover; }
.material-swatch:hover { transform: scale(1.1); }
.material-swatch.selected { border-color: #007bff; border-width: 3px; }
#price-container {
    text-align: center;
    padding-top: 15px;
}
#price-container .price-label {
    font-size: 16px;
    color: #555;
    margin-bottom: 5px;
}
#price-container .price-value {
    font-size: 28px;
    font-weight: bold;
    color: #d9534f;
}