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1rem;border-radius:var(--radius);font-size:.82rem;font-weight:500;box-shadow:var(--shadow-lg);opacity:0;transform:translate(1rem);transition:opacity var(--transition-slow),transform var(--transition-slow);max-width:320px;pointer-events:auto}.toast.show{opacity:1;transform:translate(0)}.toast-success{background:var(--hb-success);color:#fff}.toast-error{background:var(--hb-error);color:#fff}.toast-warning{background:var(--hb-warning);color:#fff}.toast-info{background:var(--hb-blue);color:#fff}#ar-overlay{display:none;position:fixed;inset:0;z-index:8000;align-items:flex-end;justify-content:center;padding-bottom:2rem;pointer-events:none}#ar-overlay.visible{display:flex}.ar-stop-btn{pointer-events:auto;padding:.8rem 2rem;background:#dc2626e6;color:#fff;border:none;border-radius:999px;font-size:1rem;font-weight:700;font-family:inherit;backdrop-filter:blur(8px);box-shadow:var(--shadow-lg)}@media(max-width:900px){:root{--left-panel-w: 0px;--right-panel-w: 0px}.left-panel,.right-panel{display:none}.left-panel.mobile-open,.right-panel.mobile-open{display:flex;position:fixed;z-index:500;top:calc(var(--chrome-h) + env(safe-area-inset-top,0px));height:auto;max-height:calc(100dvh - var(--chrome-h) - env(safe-area-inset-top,0px) - 1rem);width:50vw;background:var(--panel-bg);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);box-shadow:var(--shadow-xl);overflow-y:auto}.left-panel.mobile-open{left:.75rem;border-radius:var(--radius-lg)}.right-panel.mobile-open{right:.75rem;border-radius:var(--radius-lg)}#panel-backdrop{display:none;position:fixed;inset:0;top:calc(var(--chrome-h) + env(safe-area-inset-top,0px));background:#0006;z-index:499}#panel-backdrop.visible{display:block}.toolbar-btn span{display:none}.toolbar-btn svg{width:18px;height:18px}#btn-wireframe,#btn-axes,#btn-grid,#btn-fp,#nav-cube{display:none}.mobile-panel-toggle{display:flex}}.theme-btn{display:flex;align-items:center;justify-content:center;width:32px;height:32px;padding:0;border:none;border-radius:var(--radius-sm);background:#00000012;color:var(--hb-gray-700);transition:background var(--transition),color var(--transition);flex-shrink:0}.theme-btn:hover{background:#00000021;color:var(--hb-gray-900)}.theme-btn svg{width:16px;height:16px}html.dark .upload-zone{background:#ffffff08;border-color:#ffffff1f}html.dark .model-item-ext{background:#ffffff12;color:var(--hb-gray-500)}html.dark .theme-btn{background:#ffffff1a;color:#ffffffd9}html.dark .theme-btn:hover{background:#fff3;color:var(--hb-white)}.viewer-footer{flex-shrink:0;background:var(--hb-gray-100);border-top:1px solid var(--hb-gray-200);padding:0 1rem;z-index:10;font-size:11px;color:var(--hb-gray-500)}.footer-row{display:flex;align-items:center;height:22px}.footer-top{justify-content:space-between;border-bottom:1px solid var(--hb-gray-200)}.footer-bottom{justify-content:center;gap:.5rem}.footer-links{display:flex;align-items:center;gap:.4rem}.viewer-footer a{color:var(--hb-gray-500);text-decoration:none;transition:color var(--transition)}.viewer-footer a:hover{color:var(--hb-gray-900);text-decoration:none}.footer-sep,.footer-dot{color:var(--hb-gray-300)}.footer-version{color:var(--hb-blue-500);font-weight:600}.footer-social{display:flex;align-items:center;gap:.5rem}.footer-social a{display:flex;align-items:center;color:var(--hb-gray-400)}.footer-social a:hover{color:var(--hb-gray-700)}.footer-social svg{width:14px;height:14px}@media(max-width:900px){.viewer-footer{padding:0 .75rem}.footer-bottom{gap:.35rem}.footer-version{display:none}}html.dark{--hb-gray-50: #1a1f2e;--hb-gray-100: #222838;--hb-gray-200: #2d3550;--hb-gray-300: #3b4668;--hb-gray-400: #5a6a8a;--hb-gray-500: #8899b8;--hb-gray-700: #c0cce0;--hb-gray-900: #e0e8f0;--hb-blue-50: #0a1929;--hb-blue-100: #0e2d4d;--hb-accent-50: rgba(91,181,255,.08);--hb-accent-100: rgba(91,181,255,.18);--canvas-bg: #141820;--panel-bg: rgba(14,20,40,.7);--panel-border: rgba(255,255,255,.07)}