@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap";:root{--bg-color:#0b0f19;--panel-bg:#0f172abf;--panel-border:#ffffff14;--accent-color:#0d9488;--accent-hover:#14b8a6;--accent-light:#0d948826;--secondary-color:#ea580c;--secondary-hover:#f97316;--text-primary:#f8fafc;--text-secondary:#94a3b8;--text-muted:#64748b;--shadow-lg:0 20px 25px -5px #00000080, 0 10px 10px -5px #0006;--transition-smooth:all .25s cubic-bezier(.4, 0, .2, 1)}*{box-sizing:border-box;margin:0;padding:0}body,html{background-color:var(--bg-color);width:100%;height:100%;color:var(--text-primary);font-family:Inter,sans-serif;overflow:hidden}#app{width:100%;height:100%;position:relative}#three-canvas{width:100%;height:100%;display:block}.ui-overlay{pointer-events:none;justify-content:space-between;width:100%;height:100%;padding:24px;display:flex;position:absolute;top:0;left:0}.panel{pointer-events:auto;background:var(--panel-bg);-webkit-backdrop-filter:blur(16px);border:1px solid var(--panel-border);box-shadow:var(--shadow-lg);border-radius:16px;flex-direction:column;max-height:calc(100vh - 48px);padding:24px;display:flex;overflow-y:auto}.left-panel{gap:20px;width:360px}.right-panel{align-self:flex-start;gap:16px;width:280px}h1{letter-spacing:-.02em;color:var(--text-primary);align-items:center;gap:8px;font-family:Outfit,sans-serif;font-size:20px;font-weight:700;display:flex}h1 span{background:var(--accent-color);letter-spacing:.05em;text-transform:uppercase;color:#fff;border-radius:99px;padding:2px 8px;font-size:11px;font-weight:600}.subtitle{color:var(--text-secondary);font-size:13px;line-height:1.5}h2{text-transform:uppercase;letter-spacing:.05em;color:var(--accent-hover);border-bottom:1px solid var(--panel-border);margin-top:10px;padding-bottom:6px;font-family:Outfit,sans-serif;font-size:15px;font-weight:600}.control-group{flex-direction:column;gap:8px;display:flex}.control-label{color:var(--text-secondary);justify-content:space-between;font-size:12px;font-weight:500;display:flex}.control-val{color:var(--text-primary);font-weight:600}input[type=range]{-webkit-appearance:none;width:100%;height:6px;transition:var(--transition-smooth);background:#ffffff1a;border-radius:99px;outline:none}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;background:var(--accent-color);cursor:pointer;width:16px;height:16px;transition:var(--transition-smooth);box-shadow:0 0 8px var(--accent-color);border-radius:50%}input[type=range]::-webkit-slider-thumb:hover{background:var(--accent-hover);transform:scale(1.2)}select{border:1px solid var(--panel-border);width:100%;color:var(--text-primary);cursor:pointer;transition:var(--transition-smooth);background:#0000004d;border-radius:8px;outline:none;padding:10px 14px;font-family:inherit;font-size:13.5px}select:focus{border-color:var(--accent-color);box-shadow:0 0 0 2px var(--accent-light)}.grid-presets{grid-template-columns:repeat(2,1fr);gap:10px;display:grid}.material-card{cursor:pointer;transition:var(--transition-smooth);background:#ffffff08;border:2px solid #0000;border-radius:10px;flex-direction:column;align-items:center;gap:6px;padding:8px;display:flex}.material-card:hover{background:#ffffff14}.material-card.active{border-color:var(--accent-color);background:var(--accent-light)}.material-preview{aspect-ratio:16/9;background-position:50%;background-size:cover;border-radius:6px;width:100%;position:relative;overflow:hidden;box-shadow:0 4px 6px -1px #0000004d}.material-name{color:var(--text-primary);font-size:12px;font-weight:500}.checkbox-label{cursor:pointer;color:var(--text-secondary);-webkit-user-select:none;user-select:none;align-items:center;gap:10px;font-size:13px;display:flex}.checkbox-label input{display:none}.custom-checkbox{border:1.5px solid var(--text-muted);width:18px;height:18px;transition:var(--transition-smooth);border-radius:4px;justify-content:center;align-items:center;display:inline-flex}.checkbox-label input:checked+.custom-checkbox{background:var(--accent-color);border-color:var(--accent-color)}.checkbox-label input:checked+.custom-checkbox:after{content:"✓";color:#fff;font-size:12px;font-weight:700}.btn{cursor:pointer;transition:var(--transition-smooth);border:none;border-radius:8px;outline:none;justify-content:center;align-items:center;gap:8px;width:100%;padding:12px 16px;font-family:inherit;font-size:14px;font-weight:600;display:flex}.btn-primary{background:var(--accent-color);color:#fff}.btn-primary:hover{background:var(--accent-hover);box-shadow:0 0 12px var(--accent-hover)}.btn-secondary{border:1px solid var(--panel-border);color:var(--text-primary);background:#ffffff0d}.btn-secondary:hover{color:#fff;background:#ffffff1a}.footer-tips{border-top:1px solid var(--panel-border);color:var(--text-muted);flex-direction:column;gap:6px;margin-top:auto;padding-top:12px;font-size:12px;display:flex}.footer-tips div{align-items:flex-start;gap:6px;display:flex}.footer-tips span{color:var(--secondary-color);font-weight:700}@media (height<=720px){.left-panel{gap:12px;width:320px;padding:16px}.right-panel{gap:10px;width:250px;padding:16px}h1{font-size:18px}h2{font-size:13px}.subtitle{font-size:11px}}