/* Existing Cobalt tokens · file browser with real document previews.
   Pre-emit critique: P4 H5 E4 S5 R5 V4. */
.library{height:100dvh;min-height:400px;display:grid;grid-template-columns:216px minmax(0,1fr);background:var(--color-paper);font-family:var(--font-body)}
.library-rail{display:flex;flex-direction:column;min-width:0;background:var(--color-panel);border-right:1px solid var(--color-rule);padding:28px 16px 20px}
.library-brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--color-ink);padding:0 10px;height:36px}
.library-brand strong{font:600 18px var(--font-display);letter-spacing:-.5px}
.library-workspace{display:flex;align-items:center;gap:10px;padding:28px 10px 24px;font-size:12px;font-weight:600}
.workspace-mark{width:32px;height:32px;display:grid;place-items:center;background:var(--color-selected);color:var(--color-accent);border-radius:8px;font-size:13px}
.library-workspace small{display:block;color:var(--color-muted);font-size:10px;font-weight:400;margin-top:3px}
.library-rail nav{display:grid;gap:5px}
.library-nav{height:40px;justify-content:flex-start;padding:0 12px;border-radius:6px;gap:10px;font-size:12px;text-align:left;color:var(--color-ink-2)}
.library-nav>span:first-of-type{flex:1}
.library-nav>span:last-child{font:11px var(--font-mono);color:var(--color-muted)}
.library-nav.active{background:var(--color-selected);color:var(--color-accent);font-weight:600}
.library-rail-bottom{margin-top:auto;display:flex;gap:7px;align-items:flex-start;padding:20px 10px 0;border-top:1px solid var(--color-rule);font-size:10px;line-height:1.7;color:var(--color-muted)}
.library-main{overflow:auto;min-width:0;padding:44px 44px 64px}
.library-heading{display:flex;justify-content:space-between;align-items:center;gap:24px;margin-bottom:32px}
.library-eyebrow{font-size:11px;color:var(--color-muted)}
.library-heading h1{font:600 28px/1.3 var(--font-body);letter-spacing:-.8px;margin:7px 0 0;overflow-wrap:anywhere}
.library-actions{display:flex;gap:8px;flex-shrink:0}
.library-actions .button{height:36px;font-size:12px}
.library-controls{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:22px}
.library-search{display:flex;align-items:center;gap:8px;background:var(--color-panel);border:1px solid var(--color-rule);border-radius:6px;padding:0 11px;height:36px;width:min(320px,100%);color:var(--color-muted)}
.library-search:focus-within{outline:2px solid var(--color-focus);outline-offset:1px}
.library-search input{background:var(--color-transparent);border:0;padding:0;height:32px;width:100%;font-size:12px;outline:none!important}
.library-sort{display:flex;align-items:center;gap:16px;flex-shrink:0}
.library-sort>span{font-size:11px;color:var(--color-muted)}
.library-sort select{height:34px;padding:0 9px;background:var(--color-panel);border:1px solid var(--color-rule);font-size:11px}
.file-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(256px,100%),1fr));gap:24px}
.file-card{min-width:0;position:relative;border:1px solid var(--color-rule);border-radius:9px;overflow:clip;background:var(--color-panel);transition:border-color var(--dur-micro) var(--ease-out)}
.file-open{display:block;text-decoration:none;color:var(--color-ink);min-width:0}
.file-open:focus-visible{outline-offset:-3px}
.file-open[aria-disabled=true]{cursor:default}
.file-preview{aspect-ratio:1.6;display:flex;align-items:center;justify-content:center;background:var(--color-paper-2);position:relative;overflow:clip;border-bottom:1px solid var(--color-rule)}
.file-preview img{width:100%;height:100%;object-fit:contain;display:block;pointer-events:none}
.file-placeholder{color:var(--color-rule-2);display:flex;flex-direction:column;align-items:center;gap:11px}
.file-placeholder>span{font-size:11px;color:var(--color-muted)}
.file-page-count{position:absolute;right:10px;bottom:10px;border:1px solid var(--color-rule);border-radius:4px;background:var(--color-panel);color:var(--color-muted);padding:2px 6px;font-size:9px;opacity:0;transition:opacity var(--dur-micro) var(--ease-out)}
.file-card:hover .file-page-count,.file-card:focus-within .file-page-count{opacity:1}
.file-caption{display:flex;flex-direction:column;gap:5px;min-width:0;padding:15px 42px 16px 16px}
.file-title{font-size:13px;font-weight:550;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.file-date{font-size:10px;color:var(--color-muted)}
.file-more{position:absolute;bottom:24px;right:8px;width:28px;height:28px;border-radius:4px;color:var(--color-muted)}
.file-opening{position:absolute;inset:0;display:grid;place-items:center;background:var(--color-panel);color:var(--color-muted);font-size:12px;opacity:.9}
.file-skeleton{border:1px solid var(--color-rule);border-radius:9px;background:var(--color-panel);overflow:clip}
.file-skeleton>div{aspect-ratio:1.6;background:var(--color-paper-2)}
.file-skeleton>span{display:block;margin:18px 16px;width:55%;height:12px;border-radius:3px;background:var(--color-paper-2)}
.library-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:350px;text-align:center;color:var(--color-muted);padding:40px 12px}
.library-empty>svg{color:var(--color-rule-2)}
.library-empty h2{color:var(--color-ink);font:550 19px var(--font-body);margin:22px 0 8px}
.library-empty p{font-size:12px;line-height:1.8;margin:0 0 20px}
.library-empty>div{display:flex;gap:8px}
.library-menu{position:fixed;z-index:70;min-width:188px;padding:5px;border:1px solid var(--color-rule-2);border-radius:7px;background:var(--color-panel);box-shadow:0 6px 20px var(--color-shadow)}
.library-menu button{display:flex;justify-content:flex-start;width:100%;height:34px;padding:0 9px;border-radius:4px;gap:10px;font-size:12px}
.library-menu button[data-library-action=trash]{color:var(--color-error)}
@media(hover:hover){.file-card:hover{border-color:var(--color-rule-2)}.file-more:hover,.library-menu button:hover,.library-nav:not(.active):hover{background:var(--color-paper-2)}}
/* Editor starts at the top of the viewport; file navigation belongs to the rail. */
.editor-file-heading{flex-shrink:0;padding:12px 10px;border-bottom:1px solid var(--color-rule);min-height:81px}
.editor-file-row{display:flex;align-items:center;gap:4px;min-width:0}
.editor-file-row input{width:100%;min-width:0;height:30px;padding:0 4px;background:var(--color-transparent);font-size:12px;font-weight:550;text-overflow:ellipsis}
.editor-file-row .small-icon{flex:0 0 24px;width:24px;min-width:24px}
.editor-file-heading .save-status{margin:4px 0 0 32px;font-size:9px}
.canvas-home{font-size:10px;gap:5px;margin-right:12px;height:26px;color:var(--color-muted);flex-shrink:0}
.canvas-home svg{width:13px;height:13px}
.canvas-status #selection-status{margin-right:auto}
.app .left-panel,.app #right-panel{top:0}
.app .canvas-status .inspector-toggle,.app .canvas-status .panel-toggle{display:none}
@media(max-width:1100px){.library-main{padding:32px 28px 48px}.library{grid-template-columns:190px minmax(0,1fr)}.file-grid{gap:18px}}
@media(max-width:900px){.app .canvas-status .inspector-toggle{display:inline-flex}}
@media(max-width:768px){.library{grid-template-columns:minmax(0,1fr);grid-template-rows:auto minmax(0,1fr)}.library-rail{padding:12px 20px;flex-direction:row;align-items:center;gap:24px;border-right:0;border-bottom:1px solid var(--color-rule)}.library-workspace,.library-rail-bottom{display:none}.library-rail nav{display:flex;gap:4px;margin-left:auto}.library-nav{height:34px;padding:0 9px}.library-nav>span:last-child{display:none}.library-brand{padding:0;gap:8px}.library-brand strong{font-size:16px}.library-main{padding:28px 24px 40px}.library-heading{align-items:flex-start;flex-direction:column;gap:18px;margin-bottom:24px}.library-heading h1{font-size:25px}.library-controls{gap:12px}.library-sort>span{display:none}.file-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}}
@media(max-width:680px){.app .left-panel,.app #right-panel{top:0}.app .canvas-status .panel-toggle{display:inline-flex}.app.panels-hidden .canvas-status .panel-toggle,.app.panels-hidden .canvas-status .inspector-toggle{display:none}.canvas-status>span{max-width:45%}}
@media(max-width:540px){.library-rail{padding:12px 16px;gap:12px}.library-brand strong{display:none}.library-nav{font-size:11px}.library-main{padding:24px 16px 36px}.file-grid{grid-template-columns:minmax(0,1fr)}.library-controls{align-items:stretch;flex-direction:column;gap:10px}.library-search{width:100%}.library-sort{justify-content:space-between}.library-sort>span{display:inline}.library-actions{width:100%}.library-actions .button{flex:1}.library-empty{min-height:280px}.file-caption{padding-top:14px;padding-bottom:14px}}