.surface-section{margin-bottom:4rem}.viewer-container{display:grid;grid-template-columns:1fr 300px;gap:2rem;background:#1a1a20;padding:1rem;border-radius:12px;border:1px solid #333}@media (max-width: 900px){.viewer-container{grid-template-columns:1fr}}.canvas-wrapper{position:relative;width:100%;height:500px;background:#000;border-radius:8px;overflow:hidden;box-shadow:inset 0 0 20px #000c}.controls-panel{padding:1rem;background:#222;border-radius:8px;display:flex;flex-direction:column;gap:1rem}.control-group{display:flex;flex-direction:column;gap:.5rem}.control-group label{font-size:.9rem;color:#aaa;display:flex;justify-content:space-between}.control-group label span{color:#0f8;font-family:monospace}.control-divider{height:1px;background:#444;margin:.5rem 0}select,input[type=text]{background:#333;border:1px solid #444;color:#fff;padding:.5rem;border-radius:4px;font-family:inherit}input[type=range]{width:100%;background:transparent;cursor:pointer}input[type=color]{width:100%;height:40px;border:none;background:transparent;cursor:pointer}.demo-text-layer{font-family:Courier New,monospace;font-weight:700;color:#fa0;text-shadow:0 0 10px rgba(255,170,0,.5);display:flex;align-items:center;justify-content:center;font-size:2rem;pointer-events:none;-webkit-user-select:none;user-select:none}