:root{color-scheme:dark;--bg-app:#111214;--bg-surface:#17181b;--bg-panel:#1c1e22;--bg-sidebar:#15171a;--bg-elevated:#22252a;--text-primary:#f2f2f2;--text-secondary:#c1c1c1;--text-muted:#94979c;--border-subtle:#2b2f36;--border-strong:#3a4048;--button-bg:#24272d;--button-bg-hover:#2b2f36;--button-primary-bg:#e7e7e7;--button-primary-text:#111214;--input-bg:#1b1d21;--viewer-bg:#0f1012;--focus-ring:#e0e0e0}
:root[data-theme=light]{color-scheme:light;--bg-app:#ececec;--bg-surface:#f6f6f6;--bg-panel:#f1f1f1;--bg-sidebar:#e8e8e8;--bg-elevated:#fff;--text-primary:#1c1c1c;--text-secondary:#5b5b5b;--text-muted:#707070;--border-subtle:#d2d2d2;--border-strong:#b7b7b7;--button-bg:#d9d9d9;--button-bg-hover:#cfcfcf;--button-primary-bg:#555;--button-primary-text:#fff;--input-bg:#fff;--viewer-bg:#efefef;--focus-ring:#555}
*{box-sizing:border-box}html,body{height:100%;margin:0}body{font:13px 'Segoe UI',Arial,sans-serif;background:var(--bg-app);color:var(--text-primary);overflow:hidden}button,input,select{font:inherit}button{background:var(--button-bg);border:1px solid var(--border-strong);border-radius:7px;padding:9px 12px;color:var(--text-primary);cursor:pointer;transition:background .15s}button:hover{background:var(--button-bg-hover)}button:disabled{opacity:.4;cursor:default}button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible,canvas:focus-visible{outline:2px solid var(--focus-ring);outline-offset:3px}button[aria-pressed=true]{background:var(--button-primary-bg);color:var(--button-primary-text)}[hidden]{display:none!important}.primary{background:var(--button-primary-bg);color:var(--button-primary-text);font-weight:650;border-color:transparent}.primary:hover{filter:brightness(1.12);background:var(--button-primary-bg)}.full{width:100%}.text-button{border:0;padding:4px 0;background:transparent;color:var(--text-muted);font-size:11px}.text-button:hover{color:var(--text-primary);background:transparent}.brand-mark{width:36px;height:36px;border:1px solid var(--border-strong);border-radius:9px;font-size:30px;text-align:center;line-height:29px}.brand h1{font-size:18px;font-weight:600;letter-spacing:.2px;margin:0 0 4px}.brand>span{font-size:9px;letter-spacing:1.6px;color:var(--text-muted)}.version{font-size:10px;color:var(--text-muted);align-self:center;padding:3px 6px;border:1px solid var(--border-subtle);border-radius:4px}#theme{font-size:20px;width:34px;height:34px;padding:0}main{height:calc(100dvh - 104px);display:flex}aside{width:300px;flex:0 0 300px;overflow:auto;background:var(--bg-sidebar);border-right:1px solid var(--border-subtle);padding:23px 20px 12px}aside section{padding-bottom:22px;margin-bottom:22px;border-bottom:1px solid var(--border-subtle)}h2{font-size:10px;font-weight:600;letter-spacing:1.5px;text-transform:uppercase;color:var(--text-secondary);margin:0 0 15px}.hint{font-size:11px;line-height:1.75;color:var(--text-muted);margin:10px 0 0}.section-heading{display:flex;justify-content:space-between;align-items:center;margin:24px 0 12px}.section-heading h2{margin:0}.section-heading #count{padding:2px 5px;margin-left:3px;background:var(--bg-elevated);border-radius:4px;font-variant-numeric:tabular-nums}#search,select{width:100%;background:var(--input-bg);color:var(--text-primary);border:1px solid var(--border-strong);padding:8px 9px;border-radius:6px;font-size:12px}#gallery{max-height:30vh;overflow:auto;margin-top:9px;display:grid;gap:5px}.file-item{display:flex;align-items:center;gap:10px;padding:8px;text-align:left;width:100%;background:transparent;border:1px solid transparent;min-width:0}.file-item[aria-current=true]{background:var(--bg-elevated);border-color:var(--border-strong)}.thumb{width:48px;height:36px;object-fit:cover;border-radius:4px;background:var(--bg-panel);flex:none;display:grid;place-items:center;color:var(--text-muted);font-size:21px}.file-copy{min-width:0}.file-copy strong{font-size:11px;font-weight:500;display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-copy small{display:block;color:var(--text-muted);font-size:10px;margin-top:4px}.list-empty{padding:8px 0}.field{display:block;font-size:12px;color:var(--text-secondary)}.field select{margin-top:9px}fieldset{border:0;padding:0;margin:20px 0 0;min-width:0}fieldset:disabled{opacity:.4}.range-label{display:flex;justify-content:space-between;font-size:12px;color:var(--text-secondary)}input[type=range]{width:100%;accent-color:var(--text-secondary);margin:14px 0 18px}.button-row{display:flex;gap:7px;margin-bottom:8px}.button-row button{flex:1;padding:9px 3px;font-size:11px}#snapshot{font-size:11px}#file-name{overflow-wrap:anywhere;font-size:12px;margin-bottom:14px}dl{display:grid;grid-template-columns:auto 1fr;gap:9px;font-size:11px}dt{color:var(--text-muted)}dd{margin:0;text-align:right;font-variant-numeric:tabular-nums}.help-section{margin-bottom:15px}details{font-size:11px;line-height:1.8;color:var(--text-muted)}summary{cursor:pointer;color:var(--text-secondary)}.sidebar-foot{font-size:8px;line-height:1.6;letter-spacing:1.1px;color:var(--text-muted);padding-bottom:9px}.workspace{flex:1;min-width:0;position:relative;background:var(--viewer-bg);isolation:isolate;overflow:hidden}#canvas{width:100%;height:100%;display:block;touch-action:none;cursor:grab}#canvas:active{cursor:grabbing}#empty{position:absolute;inset:0;display:grid;place-items:center;background:radial-gradient(ellipse at 50% 44%,var(--bg-elevated),var(--viewer-bg) 72%)}.empty-card{text-align:center;padding:30px;max-width:600px}.sphere{width:180px;height:142px;stroke:var(--border-strong);stroke-width:1.2;margin-bottom:28px}.sphere-arrow{stroke:var(--text-secondary);stroke-width:1.5}.eyebrow{font-size:9px;letter-spacing:2px;color:var(--text-muted);margin-bottom:17px}.empty-card h2{font-size:28px;font-weight:400;letter-spacing:-.6px;text-transform:none;color:var(--text-primary);margin-bottom:15px}.empty-card p{font-size:13px;color:var(--text-muted);line-height:1.8;margin:0 0 26px}.empty-card>.primary{padding:12px 24px}.drop-hint{display:block;font-size:11px;color:var(--text-muted);margin-top:13px}.demo-button{display:block;margin:32px auto 0;font-size:11px}#viewer-head{position:absolute;left:22px;right:22px;top:20px;display:flex;gap:16px;justify-content:space-between;pointer-events:none;color:#fff}#viewer-head>div:first-child{min-width:0;display:flex;flex-direction:column;align-items:flex-start;gap:8px}#viewer-name{max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13px;text-shadow:0 1px 8px #000;background:#111214a8;padding:6px 9px;border-radius:5px}.viewer-tag{font-size:9px;letter-spacing:1.6px;background:#111214a8;padding:5px 8px;border:1px solid #ffffff2b;border-radius:4px}.viewer-actions{display:flex;gap:8px;align-items:center;align-self:flex-start;background:#15171ae6;border:1px solid #ffffff30;border-radius:7px;padding:3px;pointer-events:auto}#position{font-size:11px;padding:0 5px;font-variant-numeric:tabular-nums}.viewer-actions button{border:0;background:transparent;color:#fff;padding:4px 9px}#viewer-bottom{position:absolute;bottom:20px;left:22px;right:22px;display:flex;align-items:end;justify-content:space-between;gap:10px;pointer-events:none;color:#eee}.navigation-hint,#orientation{font-size:10px;padding:6px 8px;background:#111214bf;border-radius:4px;line-height:1.6}.navigation-hint{max-width:220px}.toolbar{display:flex;align-items:center;gap:4px;border:1px solid #ffffff30;border-radius:9px;background:#15171ae6;padding:4px;pointer-events:auto;flex-shrink:0}.toolbar button{border:0;background:transparent;color:#eee;padding:4px 10px;font-size:20px}.toolbar button:hover{background:#343943}.toolbar span{font-size:12px;min-width:34px;text-align:center}.toolbar .divider{min-width:1px;width:1px;height:20px;background:#ffffff30;margin:0 4px}#orientation{font-variant-numeric:tabular-nums;white-space:nowrap}#notice{position:absolute;top:90px;left:20px;right:20px;z-index:8;padding:13px 14px;background:var(--bg-elevated);border:1px solid var(--border-strong);border-radius:8px;display:flex;align-items:flex-start;gap:20px;box-shadow:0 4px 20px #0003;font-size:12px;line-height:1.7;max-height:40%;overflow:auto}#notice-text{white-space:pre-line;flex:1;overflow-wrap:anywhere}#dismiss-notice{padding:0 5px;font-size:18px;border:0;background:transparent}#loading{position:absolute;inset:0;z-index:7;display:grid;place-items:center;background:#111214b8;backdrop-filter:blur(4px)}.loading-card{background:var(--bg-panel);border:1px solid var(--border-strong);border-radius:12px;display:flex;flex-direction:column;align-items:center;gap:16px;padding:32px;min-width:280px;max-width:90%;text-align:center}.loading-card strong{font-weight:500}.loading-card span:last-of-type{font-size:11px;color:var(--text-muted)}progress{width:100%;height:5px;accent-color:var(--text-secondary)}.spinner{width:24px;height:24px;border:2px solid var(--border-strong);border-top-color:var(--text-primary);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}#drop-cover{position:fixed;inset:83px 12px 43px;z-index:20;border:2px dashed var(--text-secondary);background:var(--bg-panel);opacity:.97;display:grid;place-items:center;font-size:22px;pointer-events:none;border-radius:9px}footer{height:32px;border-top:1px solid var(--border-subtle);padding:0 18px;display:flex;align-items:center;gap:18px;color:var(--text-muted);font-size:10px;background:var(--bg-surface)}#status{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}footer>span:last-child{font-size:8px;letter-spacing:1.2px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}.workspace:fullscreen{width:100vw;height:100dvh;background:var(--viewer-bg)}@media(max-width:1100px){#orientation{display:none}.navigation-hint{max-width:170px}aside{width:270px;flex-basis:270px;padding:18px 15px}}@media(max-width:700px){.brand h1{font-size:16px}.brand>span{font-size:8px}main{height:calc(100dvh - 94px);flex-direction:column-reverse}aside{width:100%;flex:0 0 38%;padding:15px;border-right:0;border-top:1px solid var(--border-subtle)}.workspace{min-height:230px}aside section{margin-bottom:15px;padding-bottom:15px}#gallery{max-height:150px}.sphere{width:85px;height:65px;margin-bottom:6px}.empty-card{padding:12px}.empty-card h2{font-size:20px;margin-bottom:7px}.empty-card p{font-size:11px;margin-bottom:12px}.eyebrow{font-size:7px;margin-bottom:7px}.empty-card>.primary{padding:9px 14px}.drop-hint{margin-top:8px}.demo-button{margin-top:10px}.navigation-hint{display:none}#viewer-bottom{justify-content:center;bottom:12px}#viewer-head{top:12px;left:12px;right:12px}#viewer-name{max-width:200px}.viewer-tag{display:none}footer>span:last-child{display:none}#notice{top:55px;font-size:11px}#drop-cover{font-size:16px;text-align:center;padding:20px}}
@media(prefers-reduced-motion:reduce){.spinner{animation:none}button{transition:none}}

.tone-buttons{margin-top:12px}

footer a,.help-section a{color:inherit}

/* The viewer starts at the top edge; app identity stays in the sidebar. */
body{display:grid;grid-template-rows:minmax(0,1fr) 36px}
main{height:auto;min-height:0}
.sidebar-brand{display:flex;align-items:center;gap:10px;padding:0 0 21px;margin-bottom:22px;border-bottom:1px solid var(--border-subtle)}
.sidebar-brand .brand{min-width:0}.sidebar-brand h1{font-size:17px;white-space:nowrap}.sidebar-brand .brand>span{display:block;font-size:8px;letter-spacing:1px}
.sidebar-brand .brand-mark{flex:none;width:30px;height:30px;font-size:25px;line-height:25px}
.sidebar-brand .version{display:inline-block!important;width:max-content;font-size:9px!important;letter-spacing:0!important;margin-top:7px}
footer{height:36px;min-width:0;padding:0 12px;gap:12px}.footer-end{display:flex;align-items:center;gap:14px;flex:none}.footer-privacy{font-size:8px;letter-spacing:1px}
#theme{font-size:11px;width:auto;height:26px;padding:0 8px;white-space:nowrap}
#drop-cover{inset:12px 12px 47px}
@media(max-width:700px){main{height:auto}.sidebar-brand{margin-bottom:15px;padding-bottom:15px}.footer-privacy{display:none}footer{gap:8px}}