:root{--paper: #faf9f5;--paper-raised: #ffffff;--ink: #1c1e26;--ink-soft: #565a63;--panel: #14161d;--panel-text: #e9e7de;--panel-text-soft: #9a9c9;--accent: #3a6b8a;--line: #e3dfd3;--line-strong: #cfc9b8;--font-display: "Fraunces", Georgia, serif;--font-body: "IBM Plex Sans", system-ui, sans-serif;--font-mono: "IBM Plex Mono", monospace}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--paper);color:var(--ink);font-family:var(--font-body);-webkit-font-smoothing:antialiased}button{font-family:inherit;cursor:pointer}.app-shell{display:flex;height:100vh;overflow:hidden}.sidebar{width:300px;flex-shrink:0;background:var(--panel);color:var(--panel-text);display:flex;flex-direction:column;overflow-y:auto}.sidebar-header{padding:28px 22px 16px;border-bottom:1px solid rgba(255,255,255,.08)}.sidebar-header .kicker{font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--panel-text-soft)}.sidebar-header h1{font-family:var(--font-display);font-weight:600;font-size:22px;margin:6px 0 0}.sidebar-tree{padding:12px 10px 24px;flex:1}.tree-node{margin-bottom:2px}.tree-row{display:flex;align-items:center;gap:10px;width:100%;background:transparent;border:none;color:inherit;text-align:left;padding:9px 10px;border-radius:6px;font-size:14px;position:relative}.tree-row:hover{background:#ffffff0f}.tree-row.active{background:#ffffff1a}.tree-row .tab{width:4px;height:18px;border-radius:2px;flex-shrink:0}.tree-row .caret{width:12px;flex-shrink:0;opacity:.6;font-size:10px;transform:rotate(0);transition:transform .15s ease}.tree-row .caret.open{transform:rotate(90deg)}.tree-row .name{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.tree-children{margin-left:20px;border-left:1px solid rgba(255,255,255,.08);padding-left:4px}.tree-empty,.tree-loading,.tree-error{font-size:12.5px;color:var(--panel-text-soft);padding:6px 10px 6px 24px;font-family:var(--font-mono)}.tree-error{color:#d98a7a}.main{flex:1;overflow-y:auto;background:var(--paper)}.main-topbar{padding:24px 40px 0}.breadcrumb{font-family:var(--font-mono);font-size:12px;color:var(--ink-soft);letter-spacing:.02em}.breadcrumb .sep{margin:0 6px;opacity:.5}.main-title{font-family:var(--font-display);font-size:32px;font-weight:600;margin:6px 0 26px}.empty-state{padding:60px 40px;text-align:center;color:var(--ink-soft)}.empty-state .glyph{font-family:var(--font-display);font-size:48px;color:var(--line-strong);margin-bottom:12px}.file-grid{padding:0 40px 40px;display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px}.file-card{background:var(--paper-raised);border:1px solid var(--line);border-radius:8px;padding:16px;text-align:left;transition:border-color .15s ease,transform .1s ease}.file-card:hover{border-color:var(--accent);transform:translateY(-1px)}.file-card .badge{display:inline-block;font-family:var(--font-mono);font-size:10px;letter-spacing:.06em;color:#a3392c;border:1px solid #e0b3a8;background:#fbeee9;border-radius:4px;padding:2px 6px;margin-bottom:10px}.file-card .fname{font-size:14px;font-weight:500;line-height:1.35;margin-bottom:8px;word-break:break-word}.file-card .fmeta{font-family:var(--font-mono);font-size:11.5px;color:var(--ink-soft)}.subfolder-row{padding:0 40px 8px;display:flex;flex-wrap:wrap;gap:8px}.subfolder-chip{font-family:var(--font-mono);font-size:12px;border:1px solid var(--line-strong);background:var(--paper-raised);border-radius:20px;padding:6px 14px}.viewer-topbar{padding:18px 40px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.viewer-title{font-family:var(--font-display);font-size:20px;font-weight:600}.viewer-actions a,.back-link{font-family:var(--font-mono);font-size:12px;color:var(--accent);text-decoration:none;border-bottom:1px solid transparent}.viewer-actions a:hover,.back-link:hover{border-bottom-color:var(--accent)}.viewer-frame-wrap{height:calc(100vh - 68px);padding:20px 40px 40px}.viewer-frame-wrap embed,.viewer-frame-wrap iframe{width:100%;height:100%;border:1px solid var(--line);border-radius:8px;background:#fff}
