*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;overflow:hidden}.container{width:100vw;height:100vh;position:relative;display:flex;align-items:center;justify-content:center}#canvas-container{width:100%;height:100%;position:relative;cursor:grab}#canvas-container:active{cursor:grabbing}.ui-overlay{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:100}.header{position:absolute;top:30px;left:50%;transform:translate(-50%);text-align:center;pointer-events:auto}.header h1{font-size:2.5rem;font-weight:300;margin-bottom:10px;text-shadow:0 2px 10px rgba(0,0,0,.3)}.header p{font-size:1.1rem;opacity:.9;text-shadow:0 1px 5px rgba(0,0,0,.3)}.model-selector{position:absolute;top:30px;left:30px;background:#0009;padding:15px;border-radius:10px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);pointer-events:auto;border:1px solid rgba(255,255,255,.2)}.model-selector h3{margin-bottom:10px;font-size:1rem;color:#fff}.model-btn{display:block;width:100%;background:#fff3;border:1px solid rgba(255,255,255,.3);color:#fff;padding:8px 16px;margin-bottom:8px;border-radius:25px;cursor:pointer;transition:all .3s ease;font-size:.85rem;text-align:center}.model-btn:hover{background:#ffffff4d;transform:translateY(-1px)}.model-btn:last-child{margin-bottom:0}.controls{position:absolute;bottom:40px;left:50%;transform:translate(-50%);display:flex;gap:20px;pointer-events:auto}.control-btn{background:#fff3;border:1px solid rgba(255,255,255,.3);color:#fff;padding:12px 24px;border-radius:50px;cursor:pointer;transition:all .3s ease;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);font-size:.9rem}.control-btn:hover{background:#ffffff4d;transform:translateY(-2px)}.loading{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);text-align:center;pointer-events:auto}.spinner{width:50px;height:50px;border:3px solid rgba(255,255,255,.3);border-radius:50%;border-top-color:#fff;animation:spin 1s ease-in-out infinite;margin:0 auto 20px}@keyframes spin{to{transform:rotate(360deg)}}.instructions{position:absolute;top:120px;right:30px;background:#00000080;padding:20px;border-radius:10px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);pointer-events:auto;max-width:280px}.instructions h3{margin-bottom:15px;font-size:1.1rem}.instructions ul{list-style:none}.instructions li{margin-bottom:8px;font-size:.9rem;opacity:.9}.instructions li:before{content:"• ";color:#667eea;font-weight:700}.company-footer{position:absolute;bottom:10px;left:30px;color:#fffc;font-size:.9rem;font-weight:300;text-shadow:0 1px 3px rgba(0,0,0,.5);pointer-events:auto;letter-spacing:.5px;text-align:center;width:100%}@media (max-width: 768px){.header h1{font-size:2rem}.model-selector{top:15px;left:15px;padding:12px}.instructions{position:relative;top:auto;right:auto;margin:20px;max-width:none}.controls{flex-direction:column;align-items:center}.company-footer{bottom:5px;left:15px;font-size:.8rem}}