:root{--bg:#fff;--bar:#f6f8fb;--field:#fff;--line:#d6dde7;--text:#17202c;--muted:#5b6678;--accent:#2563eb;--accent-text:#fff;--accent-soft:#2563eb1f;--glass:#ffffffd1;--glass-line:#17202c1a;--chip:#17202c0f;--seg:#17202c0f;--shadow:0 10px 30px #17202c24;--error-bg:#fdecea;--error-text:#8a1c13;--error-line:#f5c2bc;--focus:#f59e0b;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;color:var(--text);background:var(--bg);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:14px;line-height:1.4}:root[data-theme=dark]{--bg:#0f1720;--bar:#121a24;--field:#18222f;--line:#243142;--text:#e6edf5;--muted:#8f9fb3;--accent:#4f9dff;--accent-text:#fff;--accent-soft:#4f9dff29;--glass:#0e141dbd;--glass-line:#ffffff14;--chip:#ffffff12;--seg:#ffffff0f;--shadow:0 18px 40px #00000080;--error-bg:#3a1a1a;--error-text:#ffb4ab;--error-line:#6b2f2b;--focus:#ffc94d;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}*{box-sizing:border-box}body,h1,h2,p{margin:0}input,button{font:inherit;color:inherit}:focus-visible{outline:3px solid var(--focus);outline-offset:2px}.visually-hidden{clip:rect(0 0 0 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.muted{color:var(--muted);font-weight:500}.icon{fill:none;stroke:currentColor;stroke-width:2px;stroke-linecap:round;stroke-linejoin:round;flex:none;width:18px;height:18px}.btn{border:1px solid var(--line);background:var(--field);white-space:nowrap;cursor:pointer;border-radius:8px;align-items:center;gap:6px;height:32px;padding:0 12px;font-size:13px;display:inline-flex}.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-text)}.btn:disabled,.icon-btn:disabled{opacity:.45;cursor:not-allowed}.icon-btn{cursor:pointer;background:0 0;border:1px solid #0000;border-radius:9px;place-items:center;width:36px;height:36px;padding:0;display:grid}.icon-btn:not(:disabled):hover{background:var(--chip)}.file-btn:focus-within{outline:3px solid var(--focus);outline-offset:2px}.app{flex-direction:column;height:100dvh;display:flex}.topbar{background:var(--bar);border-bottom:1px solid var(--line);z-index:5;align-items:center;gap:14px;min-height:60px;padding:10px 16px;display:flex;position:relative}.brand{align-items:center;gap:10px;margin-right:6px;display:flex}.logo{color:#fff;background:linear-gradient(135deg,#4f9dff,#f0913a);border-radius:8px;place-items:center;width:30px;height:30px;display:grid}.brand h1{white-space:nowrap;font-size:16px;line-height:1.2}.subtitle{color:var(--muted);font-size:11.5px}.theme-toggle{border-color:var(--line);background:var(--field);margin-left:auto}.picker{position:relative}.picker-trigger{border:1px solid var(--line);background:var(--field);text-align:left;cursor:pointer;border-radius:10px;align-items:center;gap:9px;width:250px;height:40px;padding:0 10px 0 5px;display:flex}.picker.open .picker-trigger{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.picker-trigger .thumb{border-radius:6px;width:30px;height:30px}.picker-trigger .icon{color:var(--muted)}.picker-label{flex:1;min-width:0;line-height:1.15}.picker-label small{letter-spacing:.07em;text-transform:uppercase;color:var(--muted);font-size:10.5px;display:block}.picker-label b,.picker-text b{white-space:nowrap;text-overflow:ellipsis;font-size:13px;display:block;overflow:hidden}.picker em,.info-card em{color:var(--muted);font-style:normal;font-weight:500}.thumb{border:1px solid var(--line);object-fit:cover;background:#0f1720;border-radius:8px;flex:none;width:40px;height:40px;display:block}.thumb-empty{background:var(--chip)}.picker-popover{z-index:10;border:1px solid var(--line);background:var(--bar);width:330px;max-width:calc(100vw - 24px);box-shadow:var(--shadow);border-radius:12px;padding:6px;position:absolute;top:calc(100% + 6px);left:0}.picker-menu{max-height:min(470px,100dvh - 150px);margin:0;padding:0;list-style:none;overflow-y:auto}.picker-menu:focus-visible{outline:none}.picker-option{cursor:pointer;border:1px solid #0000;border-radius:9px;align-items:center;gap:10px;padding:6px 8px;display:flex}.picker-option.active{background:var(--chip)}.picker-menu:focus-visible .picker-option.active{outline:2px solid var(--focus);outline-offset:-2px}.picker-option[aria-selected=true]{background:var(--accent-soft);border-color:color-mix(in srgb, var(--accent) 50%, transparent)}.picker-option .icon{color:var(--accent)}.picker-text{flex:1;min-width:0}.picker-text small{color:var(--muted);font-size:11.5px}.picker-hint{border:1.5px dashed var(--line);text-align:center;color:var(--muted);border-radius:9px;margin:6px 2px 2px;padding:9px;font-size:12px}.picker-hint b{color:var(--text)}.search{border:1px solid var(--line);background:var(--field);border-radius:10px;flex:1;align-items:center;gap:8px;min-width:0;max-width:400px;height:40px;padding:0 4px 0 12px;display:flex}.search:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.search .icon{color:var(--muted)}.search input{background:0 0;border:0;outline:none;flex:1;min-width:0}.search input::placeholder{color:var(--muted)}.stage{background:var(--bg);flex:1;min-height:0;position:relative;overflow:hidden}.viewer-frame,.viewer-canvas{position:absolute;inset:0}.viewer-error{color:var(--error-text);z-index:1;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.glass{z-index:2;background:var(--glass);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid var(--glass-line);border-radius:12px;position:absolute}.info-card{max-width:min(420px,100% - 220px);padding:12px 14px;top:16px;left:16px}.info-card h2{overflow-wrap:anywhere;font-size:17px;line-height:1.25}.info-text{color:var(--muted);-webkit-line-clamp:3;-webkit-box-orient:vertical;margin-top:3px;font-size:12px;display:-webkit-box;overflow:hidden}.chips{flex-wrap:wrap;gap:6px;margin:9px 0 0;padding:0;list-style:none;display:flex}.chips li{background:var(--chip);white-space:nowrap;border-radius:999px;padding:3px 8px;font-size:11.5px}.chips .chip-format{color:var(--muted)}.tools{gap:2px;padding:4px;display:flex;top:16px;right:16px}.legend{min-width:140px;max-width:220px;padding:10px 12px;font-size:12px;bottom:84px;right:16px}.legend h2{letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:6px;font-size:10.5px}.legend ul{margin:0;padding:0;list-style:none}.legend li{align-items:center;gap:7px;margin:3px 0;display:flex}.swatch{border-radius:3px;flex:none;width:12px;height:12px;display:inline-block}.gradient-bar{border-radius:999px;height:10px;display:block}.gradient-ends{color:var(--muted);justify-content:space-between;gap:12px;margin-top:4px;font-size:11px;display:flex}.legend-ligands{border-top:1px solid var(--glass-line);color:var(--muted);align-items:center;gap:8px;margin-top:7px;padding-top:7px;display:flex}.legend-ligands .element{color:var(--text);align-items:center;gap:4px;display:inline-flex}.legend-ligands .swatch{border-radius:50%}.hover-tip{z-index:3;white-space:nowrap;pointer-events:none;border-radius:8px;padding:6px 10px;font-size:12px;top:0;left:0}.display-bar{white-space:nowrap;align-items:center;gap:12px;max-width:calc(100% - 24px);padding:7px 10px;display:flex;bottom:16px;left:50%;overflow-x:auto;transform:translate(-50%)}.seg-group{border:0;align-items:center;gap:8px;margin:0;padding:0;display:flex}.seg-group legend{float:left;letter-spacing:.07em;text-transform:uppercase;color:var(--muted);padding:0;font-size:10.5px}.seg{background:var(--seg);border-radius:8px;padding:2px;display:flex}.seg label{color:var(--muted);cursor:pointer;border-radius:6px;padding:5px 10px;font-size:12.5px;position:relative}.seg label:hover{color:var(--text)}.seg label.on{background:var(--accent);color:var(--accent-text)}.seg input,.switch input{opacity:0;pointer-events:none;position:absolute}.seg label:has(input:focus-visible){outline:3px solid var(--focus);outline-offset:1px}.switch:has(input:focus-visible) .switch-track{outline:3px solid var(--focus);outline-offset:1px}.bar-divider{background:var(--line);flex:none;width:1px;height:24px}.switch{cursor:pointer;align-items:center;gap:6px;font-size:12.5px;display:inline-flex;position:relative}.switch-track{background:color-mix(in srgb, var(--muted) 55%, transparent);border-radius:999px;flex:none;width:28px;height:16px;transition:background .15s;position:relative}.switch-track:after{content:"";background:#fff;border-radius:50%;width:12px;height:12px;transition:left .15s;position:absolute;top:2px;left:2px}.switch input:checked+.switch-track{background:var(--accent)}.switch input:checked+.switch-track:after{left:14px}.status-area{z-index:4;pointer-events:none;flex-direction:column;align-items:center;gap:8px;width:max-content;max-width:min(520px,100% - 32px);display:flex;position:absolute;top:16px;left:50%;transform:translate(-50%)}.status-area>*{pointer-events:auto}.loading,.notice{box-shadow:var(--shadow);overflow-wrap:anywhere;align-items:center;gap:8px;padding:8px 14px;font-size:13px;display:flex;position:static}.spinner{border:2px solid var(--accent-soft);border-top-color:var(--accent);border-radius:50%;flex:none;width:14px;height:14px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}@media (prefers-reduced-motion:reduce){.spinner{animation-duration:2.4s}.switch-track,.switch-track:after{transition:none}}.error{background:var(--error-bg);color:var(--error-text);border:1px solid var(--error-line);box-shadow:var(--shadow);border-radius:10px;align-items:center;gap:8px;padding:6px 6px 6px 14px;display:flex}.error .icon-btn{width:28px;height:28px}.empty-state{z-index:1;text-align:center;width:min(440px,100% - 32px);color:var(--muted);position:absolute;top:45%;left:50%;transform:translate(-50%,-50%)}.empty-state h2{color:var(--text);margin-bottom:6px;font-size:18px}.empty-state b{color:var(--text)}.empty-state .btn{height:36px;margin-top:14px;padding:0 16px}.drop-overlay{z-index:6;border:2px dashed var(--accent);background:color-mix(in srgb, var(--bg) 70%, transparent);pointer-events:none;border-radius:16px;place-items:center;font-size:16px;font-weight:600;display:grid;position:absolute;inset:12px}.stage:fullscreen{background:var(--bg)}@media (width<=900px){.brand .subtitle{display:none}.picker-trigger{width:210px}}@media (width<=720px){.topbar{flex-wrap:wrap;gap:8px 10px;padding:8px 10px}.brand{margin-right:auto}.theme-toggle{margin-left:0}.picker{flex:100%;order:3}.picker-trigger{width:100%}.search{order:4;max-width:none}.file-btn{order:5;height:40px}.file-btn span{clip:rect(0 0 0 0);width:1px;height:1px;position:absolute;overflow:hidden}.info-card{max-width:none;padding:9px 11px;top:60px;left:10px;right:10px}.info-card h2{font-size:15px}.info-text,.legend .muted{display:none}.legend{min-width:0}.tools{top:10px;right:10px}.legend{max-width:170px;bottom:70px;right:10px}.display-bar{max-width:calc(100% - 20px);bottom:10px}.status-area{top:auto;bottom:70px}}