:root{--bg:#f6f8fb;--surface:#fff;--surface-soft:#f1f5f9;--text:#0f172a;--muted:#64748b;--faint:#94a3b8;--border:#dfe6ef;--primary:#2563eb;--primary-dark:#1d4ed8;--primary-soft:#eff6ff;--success:#15803d;--success-soft:#f0fdf4;--danger:#b91c1c;--danger-soft:#fef2f2;--radius:8px;font:15px/1.5 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--text);background:var(--bg)}*{box-sizing:border-box}body{margin:0;min-width:320px}button,input{font:inherit}.skip-link{position:absolute;left:12px;top:-48px;z-index:20;padding:8px 12px;background:var(--text);color:#fff;border-radius:4px}.skip-link:focus{top:12px}.app-header{height:64px;display:flex;align-items:center;gap:24px;padding:0 clamp(16px,4vw,48px);background:var(--surface);border-bottom:1px solid var(--border)}.brand{display:flex;align-items:center;gap:10px;white-space:nowrap;font-size:16px}.brand-mark{display:grid;place-items:center;width:28px;height:28px;border-radius:7px;background:var(--primary);color:#fff;font-size:18px;line-height:1}.breadcrumbs{display:flex;align-items:center;gap:8px;min-width:0;overflow:auto;white-space:nowrap;color:var(--muted);font-size:13px}.breadcrumbs a{color:var(--muted);text-decoration:none}.breadcrumbs a:first-child{color:var(--primary);font-weight:600}.breadcrumbs a:hover{text-decoration:underline}.app-header .button{margin-left:auto}.button{display:inline-flex;justify-content:center;align-items:center;gap:8px;min-height:40px;padding:8px 14px;border:1px solid transparent;border-radius:6px;cursor:pointer;text-decoration:none;font-weight:600;transition:background-color .18s ease,border-color .18s ease,color .18s ease,transform .18s ease,opacity .18s ease}.button:active{transform:scale(.98)}.button:focus-visible,.file-row:focus-visible,.back-button:focus-visible,summary:focus-visible,input:focus-visible{outline:3px solid rgba(37,99,235,.28);outline-offset:2px}.button:disabled{cursor:not-allowed;opacity:.55}.button-primary{background:var(--primary);color:#fff}.button-primary:hover{background:var(--primary-dark)}.button-secondary{background:var(--surface);border-color:var(--border);color:var(--text)}.button-secondary:hover{background:var(--surface-soft);border-color:#c5d0df}.button-ghost{background:transparent;color:var(--muted);padding-inline:10px}.button-ghost:hover{background:var(--surface-soft);color:var(--text)}.app-main{width:min(1440px,100%);margin:0 auto;padding:28px clamp(16px,4vw,48px) 48px}.message{min-height:24px;margin-bottom:4px;color:var(--muted);font-size:13px}.message.is-success{color:var(--success)}.message.is-error{color:var(--danger)}.message.is-loading{color:var(--primary)}.toolbar{display:flex;align-items:end;justify-content:space-between;gap:24px;padding:10px 0 24px}.eyebrow{margin:0 0 4px;color:var(--primary);font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.toolbar h1{margin:0;font-size:26px;letter-spacing:0}.upload-button input{display:none}.workspace{display:grid;grid-template-columns:minmax(440px,1.1fr) minmax(380px,.9fr);gap:20px;align-items:start}.listing-panel,.details-panel{min-width:0;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius)}.listing-panel{overflow:hidden}.details-panel{min-height:520px;position:sticky;top:20px;overflow:hidden}.section-heading{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 20px 14px}.section-heading h2{display:inline;margin:0;font-size:16px}.count{margin-left:8px;color:var(--muted);font-size:12px}.sort-hint{color:var(--faint);font-size:12px}.list-head,.file-row{display:grid;grid-template-columns:minmax(0,1fr) 84px 152px 148px;gap:12px;align-items:center}.list-head{padding:9px 20px;background:var(--surface-soft);border-block:1px solid var(--border);color:var(--muted);font-size:11px;font-weight:700;letter-spacing:.04em;text-transform:uppercase}.file-list{min-height:120px}.file-row{padding:12px 20px;color:var(--text);text-decoration:none;border-bottom:1px solid #edf1f5;transition:background-color .18s ease}.file-row:last-child{border-bottom:0}.file-row:hover{background:var(--primary-soft)}.file-row.is-selected{background:#eaf2ff;box-shadow:inset 3px 0 0 var(--primary)}.file-name{display:flex;align-items:center;gap:10px;min-width:0;font-weight:600}.file-label{min-width:0;overflow-wrap:anywhere}.icon{width:19px;height:19px;flex:none;color:var(--faint)}.file-row[data-dir="true"] .icon{color:#d97706}.file-size,.file-date,.file-mime{min-width:0;overflow:hidden;color:var(--muted);font-size:12px;text-overflow:ellipsis;white-space:nowrap}.empty-list,.error-state{display:grid;gap:5px;justify-items:center;padding:56px 20px;color:var(--muted);text-align:center}.empty-list strong,.error-state strong{color:var(--text)}.error-state{color:var(--danger)}.error-state .button{margin-top:8px}.loading-state{display:flex;justify-content:center;align-items:center;gap:10px;min-height:180px;color:var(--muted)}.spinner{width:17px;height:17px;border:2px solid #bfdbfe;border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}.details-empty{display:grid;place-items:center;align-content:center;min-height:520px;padding:40px;text-align:center;color:var(--muted)}.details-empty h2{margin:14px 0 4px;color:var(--text);font-size:18px}.details-empty p{max-width:270px;margin:0;font-size:13px}.empty-icon{display:grid;place-items:center;width:52px;height:52px;border-radius:50%;background:var(--surface-soft);color:var(--faint);font-size:34px}.detail-header{display:flex;align-items:start;gap:14px;padding:20px 22px 16px;border-bottom:1px solid var(--border)}.detail-header h2{margin:0;max-width:100%;overflow-wrap:anywhere;font-size:20px}.back-button{display:none;align-items:center;gap:4px;padding:4px 0;border:0;background:none;color:var(--primary);cursor:pointer;font-weight:600}.file-meta{display:grid;grid-template-columns:1fr 1fr;gap:14px;padding:18px 22px}.file-meta div{display:grid;gap:2px;min-width:0}.file-meta span{color:var(--muted);font-size:11px}.file-meta strong{overflow-wrap:anywhere;font-size:13px}.download-button{margin:0 22px 20px}.preview-area{border-top:1px solid var(--border);padding:20px 22px 24px}.preview-stats{margin-bottom:10px;color:var(--muted);font-size:12px}.text-preview,.markdown-body,.preview-area details pre{max-height:500px;overflow:auto;margin:0;padding:16px;background:#f8fafc;border:1px solid var(--border);border-radius:6px;white-space:pre-wrap;overflow-wrap:anywhere;font:13px/1.7 ui-monospace,SFMono-Regular,Menlo,monospace}.markdown-body{font:15px/1.7 system-ui,sans-serif;background:var(--surface)}.markdown-body h1,.markdown-body h2,.markdown-body h3{line-height:1.3}.markdown-body h1{font-size:24px}.markdown-body h2{font-size:20px}.markdown-body h3{font-size:17px}.markdown-body a{color:var(--primary)}.markdown-body img{max-width:100%;height:auto}.markdown-body code{padding:2px 5px;background:var(--surface-soft);border-radius:4px;font:13px ui-monospace,monospace}.markdown-body pre{padding:14px;overflow:auto;background:#0f172a;color:#e2e8f0;border-radius:6px}.markdown-body pre code{padding:0;background:none}.markdown-body blockquote{margin-inline:0;padding-left:14px;border-left:3px solid #bfdbfe;color:var(--muted)}details{margin-top:14px}summary{cursor:pointer;color:var(--primary);font-size:13px;font-weight:600}.media-preview{display:block;width:100%;max-height:520px;object-fit:contain;background:#0f172a;border-radius:6px}.pdf-preview{display:block;width:100%;height:520px;border:1px solid var(--border);border-radius:6px}.preview-notice{display:grid;gap:5px;padding:18px;background:var(--surface-soft);border-radius:6px;color:var(--muted);font-size:13px}.preview-notice strong{color:var(--text)}.login-page{display:grid;place-items:center;min-height:100dvh;padding:24px;background:var(--bg)}.login-shell{width:min(390px,100%)}.login-brand{display:flex;align-items:center;justify-content:center;gap:10px;margin-bottom:22px;font-weight:700}.login-card{display:grid;gap:20px;padding:30px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:0 12px 32px rgba(15,23,42,.06)}.login-card h1{margin:0;font-size:26px}.login-copy{margin:7px 0 0;color:var(--muted);font-size:13px}.field-label{display:grid;gap:7px;font-size:13px;font-weight:600}.field-label input{width:100%;min-height:44px;padding:10px 12px;border:1px solid #b8c5d5;border-radius:6px;background:var(--surface);color:var(--text)}.button-large{width:100%;min-height:46px}.form-error{min-height:20px;margin:0;color:var(--danger);font-size:13px}.login-footnote{margin:16px 0;text-align:center;color:var(--faint);font-size:12px}@keyframes spin{to{transform:rotate(360deg)}}@media(max-width:1050px){.workspace{grid-template-columns:minmax(360px,1fr) minmax(330px,.9fr)}.list-head,.file-row{grid-template-columns:minmax(0,1fr) 72px 120px}.list-head span:last-child,.file-row .file-mime{display:none}}@media(max-width:760px){.app-header{height:auto;min-height:60px;flex-wrap:wrap;gap:10px;padding-block:12px}.brand{width:auto}.breadcrumbs{order:3;width:100%;padding-top:2px}.app-header .button{margin-left:auto}.app-main{padding-top:18px}.toolbar{align-items:center;padding-bottom:18px}.toolbar h1{font-size:22px}.workspace{display:block}.details-panel{display:none;position:static;min-height:calc(100dvh - 170px)}.details-panel.mobile-active{display:block}.listing-panel{display:block}.details-panel.mobile-active~*{display:none}.workspace:has(.details-panel.mobile-active) .listing-panel{display:none}.list-head{display:none}.file-row{grid-template-columns:minmax(0,1fr) 76px;min-height:58px;padding:16px 14px;gap:8px}.file-date,.file-mime{display:none}.file-size{text-align:right}.section-heading{padding:15px 14px}.sort-hint{display:none}.details-empty{min-height:calc(100dvh - 170px);padding:30px}.detail-header{display:block;padding:14px 16px}.back-button{display:inline-flex;margin-bottom:14px}.file-meta{gap:12px;padding:16px}.download-button{margin-inline:16px}.preview-area{padding:16px}.media-preview{max-height:65dvh}.pdf-preview{height:65dvh}.message{min-height:20px}.upload-button{min-height:42px;padding-inline:12px}.eyebrow{font-size:10px}}@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}@media(max-width:420px){.app-header{padding-inline:12px}.app-main{padding-inline:12px}.brand strong{font-size:14px}.toolbar{gap:8px}.toolbar h1{font-size:20px}.upload-button span:last-of-type{display:none}.login-card{padding:24px}}