:root{--font-display:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;--font-body:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;--font-mono:"JetBrains Mono","SFMono-Regular",Consolas,monospace;--bg:#fafbfc;--bg-deep:#f1f5f9;--surface:#f8fafc;--surface-2:#e2e8f0;--surface-raised:#fff;--text:#1e293b;--text-soft:#475569;--text-mute:#64748b;--line:#1e293b14;--line-strong:#1e293b29;--accent:#00bfff;--accent-deep:#009acf;--accent-soft:#00bfff14;--accent-line:#00bfff40;--success:#16a34a;--danger:#dc2626;--danger-soft:#dc26260d;--sp-1:.5rem;--sp-2:.75rem;--sp-3:1rem;--sp-4:1.5rem;--sp-5:2rem;--sp-6:3rem;--sp-7:4.5rem;--container:1240px;--radius-sm:6px;--radius:12px;--radius-lg:20px;--shadow-card:0 1px 3px #0000000d,0 10px 30px -15px #0000001a;--shadow-nav:0 1px 0 #1e293b0a,0 8px 24px -16px 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var(--line);padding:.35rem;gap:.3rem;border-radius:var(--radius) var(--radius) 0 0}.sidebar-tab-btn{flex:1 1;padding:.5rem .6rem;border:0;border-radius:8px;background:transparent;color:var(--text-soft);font-size:.8rem;font-weight:600;display:inline-flex;align-items:center;justify-content:center;gap:.4rem;cursor:pointer;transition:background .15s,color .15s}.sidebar-tab-btn:hover{background:var(--surface-2);color:var(--text)}.sidebar-tab-btn.is-active{background:var(--surface-raised);color:var(--accent-deep);box-shadow:0 2px 8px rgba(0,0,0,.06)}.badge-pill{padding:.15rem .45rem;border-radius:999px;background:var(--surface-2);color:var(--text-mute);font-family:var(--font-mono);font-size:.68rem}.sidebar-tab-btn.is-active .badge-pill{background:var(--accent-soft);color:var(--accent-deep)}.breadcrumbs{margin-top:-1.4rem;margin-bottom:.2rem}.breadcrumbs-list{display:flex;align-items:center;flex-wrap:wrap;gap:.25rem;padding:0;margin:0;list-style:none}.breadcrumbs-item{display:inline-flex;align-items:center;gap:.25rem;font-size:.84rem;font-weight:550;color:var(--text-soft)}.breadcrumbs-link{color:var(--text-soft);text-decoration:none;padding:.25rem .45rem;border-radius:6px;transition:color .15s,background .15s}.breadcrumbs-link:hover{color:var(--accent-deep);background:var(--surface-2)}.breadcrumbs-separator{color:var(--text-mute);opacity:.5;flex-shrink:0}.breadcrumbs-current.is-active{color:var(--text-mute);font-weight:600;padding:.25rem .45rem}.modal-card--wide{width:min(100%,640px)}.modal-subtext{margin:0;font-size:.85rem;color:var(--text-mute)}.modal-body{padding-top:.5rem}.dropdown-wrap{position:relative}.btn--icon-only{width:38px;height:38px;padding:0;display:grid;place-items:center}.dropdown-menu{position:absolute;top:calc(100% + 6px);right:0;z-index:50;min-width:220px;padding:.4rem;border-radius:var(--radius);border:1px solid var(--line-strong);background:var(--surface-raised);box-shadow:0 10px 30px rgba(0,0,0,.2);display:flex;flex-direction:column;gap:.2rem;animation:dropdownFadeIn .15s ease-out}.dropdown-item{padding:.55rem .8rem;border:0;border-radius:6px;background:transparent;color:var(--text);font-size:.85rem;font-weight:540;text-decoration:none;display:flex;align-items:center;gap:.6rem;cursor:pointer;width:100%;text-align:left;transition:background .12s,color .12s}.dropdown-item:hover:not(:disabled){background:var(--surface-2);color:var(--accent-deep)}.dropdown-item:disabled{opacity:.5;cursor:not-allowed}@keyframes dropdownFadeIn{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.modal-icon--move{background:var(--accent-soft);color:var(--accent-deep);border:1px solid hsl(var(--accent-hue,230) 60% 55%/.18)}.move-preview{display:flex;align-items:center;gap:.65rem;padding:.85rem 1rem;border-radius:var(--radius);background:var(--surface-2);border:1px solid var(--line);font-size:.88rem;font-weight:550}.move-preview__arrow,.move-preview__from{color:var(--text-mute)}.move-preview__arrow{opacity:.5;flex-shrink:0}.move-preview__to{color:var(--accent-deep)}.dropdown-separator{height:1px;background:var(--line);margin:.25rem 0}.dropdown-item--danger{color:var(--danger)}.dropdown-item--danger:hover:not(:disabled){background:var(--danger-soft);color:var(--danger)}.archived-banner{display:flex;align-items:center;gap:.75rem;padding:1rem 1.25rem;border-radius:var(--radius);background:hsl(35 92% 50%/.08);border:1px solid hsl(35 92% 50%/.2);color:hsl(35 80% 42%);font-size:.9rem;font-weight:560}.archived-banner .btn{margin-left:auto;flex-shrink:0}.upload-dropzone{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.6rem;padding:2.5rem 1.5rem;border:2px dashed var(--line-strong);border-radius:var(--radius);background:var(--surface);cursor:pointer;transition:border-color .2s,background .2s,box-shadow .2s;text-align:center}.upload-dropzone--active,.upload-dropzone:hover{border-color:var(--accent);background:var(--accent-soft)}.upload-dropzone--active{box-shadow:0 0 0 3px var(--accent-soft)}.upload-dropzone__icon{color:var(--text-mute);transition:color .2s}.upload-dropzone--active .upload-dropzone__icon,.upload-dropzone:hover .upload-dropzone__icon{color:var(--accent)}.upload-dropzone__text{font-size:.95rem;color:var(--text-soft)}.upload-dropzone__text strong{color:var(--text)}.upload-dropzone__hint{font-size:.82rem;color:var(--text-mute)}.upload-progress{display:flex;flex-direction:column;gap:.75rem;padding:1.25rem;border-radius:var(--radius);background:var(--surface);border:1px solid var(--line)}.upload-progress__file{display:flex;align-items:center;gap:.6rem}.upload-progress__filename{font-weight:600;font-size:.95rem;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.upload-progress__status{display:flex;align-items:center;gap:.5rem;font-size:.88rem;color:var(--text-soft)}.upload-progress__bar{width:100%;height:6px;border-radius:3px;background:var(--surface-2);overflow:hidden}.upload-progress__bar-fill{height:100%;border-radius:3px;background:var(--accent);transition:width .4s ease}.upload-error{display:flex;align-items:flex-start;gap:.5rem;padding:.85rem 1rem;border-radius:var(--radius);background:var(--danger-soft);color:var(--danger);font-size:.88rem;font-weight:500;margin-top:.5rem}.upload-error svg{flex-shrink:0;margin-top:2px}@keyframes spinAnimation{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}.spin-animation{animation:spinAnimation 1s linear infinite}