:root{
  --bg:#0f1419; --panel:#171c24; --panel2:#1f2630; --border:#2a3340;
  --fg:#e6e6e6; --muted:#8a93a3; --accent:#3b82f6; --accent2:#2563eb;
  --ok:#22c55e; --err:#ef4444; --warn:#f59e0b;
  --mono: ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0; font:14px/1.5 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  background:var(--bg); color:var(--fg);
  display:flex; flex-direction:column;
}
a{color:var(--accent); text-decoration:none}
a:hover{text-decoration:underline}
code{font-family:var(--mono); background:var(--panel2); padding:1px 5px; border-radius:4px}
pre.code{font-family:var(--mono); background:#0b0f14; padding:12px; border-radius:6px; overflow:auto; max-height:70vh; white-space:pre-wrap}

.topbar{
  display:flex; align-items:center; gap:16px; padding:10px 16px;
  background:var(--panel); border-bottom:1px solid var(--border);
}
.topbar .brand{font-weight:700; font-size:16px; color:#fff}
.topbar nav{margin-left:auto; display:flex; gap:14px; align-items:center}
.topbar nav .who{color:var(--muted); font-size:12px}

.flash{padding:10px 16px; font-size:13px}
.flash.err{background:rgba(239,68,68,.15); color:#fecaca; border-bottom:1px solid #7f1d1d}
.flash.ok {background:rgba(34,197,94,.15);  color:#bbf7d0; border-bottom:1px solid #14532d}
.err{color:#fca5a5}
.ok {color:#86efac}
.muted{color:var(--muted)}
.hint{color:var(--muted); font-size:13px}

main{flex:1; min-height:0; display:flex; flex-direction:column}
body.editor main, body.editor{overflow:hidden}

button, .btn{
  background:var(--accent); color:#fff; border:0; border-radius:6px;
  padding:8px 14px; cursor:pointer; font:inherit;
}
button:hover, .btn:hover{background:var(--accent2)}
button:disabled{opacity:.5; cursor:not-allowed}
button.small, .btn.small{padding:4px 8px; font-size:12px}
button.danger{background:#dc2626}
button.danger:hover{background:#b91c1c}
button.link, .link{background:none; color:var(--accent); padding:0; border:0; cursor:pointer}
.btn.ghost{background:transparent; color:var(--fg); border:1px solid var(--border)}
.btn.ghost:hover{background:var(--panel2)}

input, textarea, select{
  background:#0b0f14; color:var(--fg); border:1px solid var(--border);
  border-radius:6px; padding:8px 10px; font:inherit; width:100%;
}
input[type=file]{padding:4px}
textarea{font-family:var(--mono); min-height:120px; resize:vertical}
label{display:block; margin:8px 0; color:var(--muted); font-size:12px}
label input, label textarea{margin-top:4px}

form.inline{display:inline}
.spacer{flex:1}

.card{
  background:var(--panel); border:1px solid var(--border); border-radius:10px;
  padding:24px; margin:24px auto; max-width:480px;
}
.card.wide{max-width:1100px}
.card h1{margin-top:0}
.card.stack > * + *{margin-top:10px}
.stack > * + *{margin-top:10px}

table.grid{width:100%; border-collapse:collapse; margin:12px 0; font-size:13px}
table.grid th, table.grid td{
  padding:8px 10px; border-bottom:1px solid var(--border); text-align:left; vertical-align:middle;
}
table.grid th{background:var(--panel2); color:var(--muted); font-weight:600}

details{margin:12px 0; padding:8px; background:var(--panel2); border-radius:6px}
details summary{cursor:pointer; user-select:none}
.inline-checkbox{display:flex; align-items:center; gap:8px; color:var(--fg); font-size:13px}
.inline-checkbox input{width:auto; margin:0}

/* editor layout */
.editor-wrap{flex:1; display:grid; grid-template-columns:280px 1fr; min-height:0}
.tree{
  background:var(--panel); border-right:1px solid var(--border);
  overflow:auto; min-height:0;
  /* Allow horizontal scroll for long paths */
  overflow-x:auto; overflow-y:auto;
  scrollbar-width:thin;
  scrollbar-color:#3a4554 transparent;
}
/* WebKit scrollbars for the file tree */
.tree::-webkit-scrollbar{width:10px; height:10px}
.tree::-webkit-scrollbar-track{background:transparent}
.tree::-webkit-scrollbar-thumb{
  background:#3a4554; border-radius:6px;
  border:2px solid var(--panel);
}
.tree::-webkit-scrollbar-thumb:hover{background:#4b5868}
.tree::-webkit-scrollbar-corner{background:transparent}

.tree-head{
  position:sticky; top:0; z-index:1; background:var(--panel);
  display:flex; justify-content:space-between; align-items:center;
  padding:10px 12px; border-bottom:1px solid var(--border);
}
.tree-head span{display:inline-flex; gap:8px}
.tree-root{padding:6px 0; font-family:var(--mono); font-size:12px;
  /* Let inner content drive the width so horizontal scroll works */
  display:inline-block; min-width:100%;
}
.tree-list{list-style:none; margin:0; padding:0}
.tree-children{display:none; padding-left:14px; border-left:1px dashed transparent; margin-left:8px}
.tree-dir.open > .tree-children{display:block}
.tree-row{
  display:flex; align-items:center; gap:6px; padding:3px 12px;
  cursor:pointer; white-space:nowrap;
  user-select:none;
}
.tree-row:hover{background:var(--panel2)}
.tree-row .caret{
  display:inline-block; width:10px; color:var(--muted);
  transition:transform .1s ease;
}
.tree-dir.open > .tree-row .caret{transform:rotate(90deg)}
.tree-row .file-icon{width:10px; color:var(--muted); text-align:center; flex:none}
.tree-row .tree-label{flex:none; white-space:nowrap}
.tree-file.active > .tree-row{background:var(--accent2); color:#fff}
.tree-file.active > .tree-row .file-icon{color:#fff}
.tree-dir.selected > .tree-row{background:var(--panel2); outline:1px solid var(--accent)}
.tree-root .pad{padding:8px 12px}

/* Inline create/delete buttons inside the tree */
.tree-actions{
  margin-left:auto; display:inline-flex; gap:2px;
  opacity:0; transition:opacity .1s;
  /* Stick to the right edge of the (horizontally scrolling) tree pane
     so the buttons stay visible without scrolling sideways. */
  position:sticky; right:6px;
  padding:2px 4px; border-radius:4px;
  background:var(--panel);
}
.tree-row:hover .tree-actions{background:var(--panel2)}
.tree-file.active > .tree-row .tree-actions{background:var(--accent2)}
.tree-dir.selected > .tree-row .tree-actions{background:var(--panel2)}
.tree-row:hover .tree-actions,
.tree-dir.selected > .tree-row .tree-actions,
.tree-project > .tree-row .tree-actions{opacity:1}
.tree-action{
  background:transparent; border:1px solid var(--border); color:var(--muted);
  border-radius:4px; padding:0 5px; font-size:10px; line-height:16px; cursor:pointer;
  font-family:inherit;
}
.tree-action:hover{background:var(--panel2); color:var(--fg)}
.tree-action.danger{color:#fca5a5; border-color:#7f1d1d}
.tree-action.danger:hover{background:#7f1d1d; color:#fff}
.tree-project > .tree-row{font-weight:600}

/* Right-pane folder / empty views */
.folder-view, .empty-view{padding:24px; overflow:auto; max-width:900px; flex:1; min-height:0}
.folder-view h2{margin:0 0 4px; font-size:18px; font-family:var(--mono); word-break:break-all}
.folder-view h3{margin:18px 0 8px; font-size:14px; color:var(--muted); text-transform:uppercase; letter-spacing:.05em}
.folder-actions{display:flex; gap:8px; flex-wrap:wrap; margin:12px 0}
.folder-list{list-style:none; padding:0; margin:0; font-family:var(--mono); font-size:13px}
.folder-list li{padding:4px 0}
.folder-list a{color:var(--fg)}
.folder-list a:hover{color:var(--accent); text-decoration:none}
.empty-view h2{margin-top:0}

/* admin file tree */
.admin-tree-toolbar{display:flex; gap:8px; align-items:center; margin:10px 0}
.admin-tree-toolbar input{flex:1; max-width:360px}
.admin-tree{
  border:1px solid var(--border); border-radius:6px;
  max-height:60vh; overflow:auto; background:var(--panel2);
}
.admin-tree .tree-row{padding:4px 12px}
.admin-tree .file-meta{margin-left:auto; color:var(--muted); font-size:11px; padding-right:8px}
.admin-tree .file-actions{display:inline-flex; gap:4px; margin-left:8px}
.admin-tree .file-actions .btn{padding:2px 8px}

/* admin paginated layout */
.admin-layout{display:flex; gap:24px; align-items:flex-start; max-width:1280px; margin:0 auto; padding:20px; width:100%}
.admin-sidebar{
  flex:0 0 200px; position:sticky; top:16px;
  background:var(--panel); border:1px solid var(--border); border-radius:8px;
  padding:12px; align-self:flex-start;
}
.admin-sidebar-title{font-size:11px; text-transform:uppercase; letter-spacing:.08em; color:var(--muted); padding:4px 8px 8px}
.admin-sidebar nav{display:flex; flex-direction:column; gap:2px}
.admin-sidebar nav a{
  display:flex; align-items:center; justify-content:space-between;
  padding:8px 10px; border-radius:6px; color:var(--fg);
}
.admin-sidebar nav a:hover{background:var(--panel2); text-decoration:none}
.admin-sidebar nav a.active{background:var(--accent); color:#fff}
.admin-sidebar nav a.active:hover{background:var(--accent2)}
.admin-sidebar .badge{
  background:var(--warn); color:#1a1a1a; font-size:11px; font-weight:600;
  padding:1px 7px; border-radius:10px; min-width:18px; text-align:center;
}
.admin-sidebar nav a.active .badge{background:#fff; color:var(--accent2)}

.admin-content{flex:1; min-width:0}
.admin-content h1{margin:0 0 16px; font-size:22px}
.admin-content h2{margin:24px 0 10px; font-size:16px; padding-bottom:6px; border-bottom:1px solid var(--border)}
.admin-content table.grid{width:100%; border-collapse:collapse; font-size:13px}
.admin-content table.grid th, .admin-content table.grid td{
  padding:8px 10px; border-bottom:1px solid var(--border); text-align:left; vertical-align:middle;
}
.admin-content table.grid th{color:var(--muted); font-weight:500; background:var(--panel2)}
.admin-content table.grid tr:hover td{background:rgba(255,255,255,.02)}
.admin-content details{
  background:var(--panel); border:1px solid var(--border); border-radius:8px;
  padding:12px 14px; margin:10px 0;
}
.admin-content details > summary{cursor:pointer; color:var(--fg); font-weight:500}
.admin-content details[open] > summary{margin-bottom:10px}
.admin-content .stack{display:flex; flex-direction:column; gap:10px}
.admin-content .stack > label{margin:0}
.admin-content .inline-checkbox{display:flex; align-items:center; gap:8px; color:var(--fg)}
.admin-content .inline-checkbox input{width:auto}
.admin-fieldset{
  border:1px solid var(--border); border-radius:8px; padding:12px 14px;
  display:flex; flex-direction:column; gap:10px;
}
.admin-fieldset legend{padding:0 6px; font-size:12px}
.admin-filter{display:flex; gap:8px; align-items:center; margin:8px 0 12px}
.admin-filter input{max-width:320px}
.pagination{display:flex; gap:10px; align-items:center; margin-top:14px}

.inline-set-pw{display:inline-block; margin-left:6px}
.inline-set-pw > summary{display:inline-block; list-style:none; cursor:pointer}
.inline-set-pw > summary::-webkit-details-marker{display:none}
.set-pw-form{
  display:flex; gap:6px; margin-top:6px; flex-wrap:wrap;
  background:var(--panel2); border:1px solid var(--border); border-radius:6px;
  padding:6px;
}
.set-pw-form input[type=password]{width:auto; flex:1; min-width:140px; padding:4px 8px; font-size:12px}

.admin-stats{display:grid; grid-template-columns:repeat(auto-fit,minmax(160px,1fr)); gap:12px; margin-bottom:24px}
.stat-card{
  display:block; padding:16px; background:var(--panel); border:1px solid var(--border);
  border-radius:8px; color:var(--fg);
}
.stat-card:hover{background:var(--panel2); text-decoration:none; border-color:var(--accent)}
.stat-card .stat-num{font-size:26px; font-weight:600; color:#fff}
.stat-card .stat-label{font-size:12px; color:var(--muted); margin-top:4px}

@media (max-width: 800px){
  .admin-layout{flex-direction:column; padding:12px}
  .admin-sidebar{position:static; flex:none; width:100%}
  .admin-sidebar nav{flex-direction:row; flex-wrap:wrap}
}

.editor-pane{display:flex; flex-direction:column; min-width:0; min-height:0}
.editor-toolbar{
  display:flex; gap:8px; align-items:center; padding:8px 12px;
  background:var(--panel); border-bottom:1px solid var(--border);
}
.editor-toolbar #current-path{font-family:var(--mono); font-size:12px}
.editor-toolbar #commit-msg{max-width:280px}
#editor{flex:1; min-height:0}
.editor-split{flex:1; display:flex; min-height:0; min-width:0}
/* `display:flex` above wins over the [hidden] attribute, so JS toggling
   `$split.hidden` had no visible effect. Re-assert hidden semantics. */
.editor-split[hidden]{display:none}
.editor-split #editor{flex:1; min-width:0}
.editor-split.has-preview #editor{flex:1 1 50%}
.editor-split.has-preview #md-preview{
  flex:1 1 50%; min-width:0; min-height:0; overflow-y:auto; overflow-x:auto;
  border-left:1px solid var(--border);
  background:#1e1e1e; color:#e6e6e6;
  padding:18px 22px; font-size:14px; line-height:1.6;
  height:100%;
}
.md-preview h1,.md-preview h2,.md-preview h3,.md-preview h4{
  border-bottom:1px solid #333; padding-bottom:.25em; margin-top:1.2em;
}
.md-preview h1{font-size:1.7em} .md-preview h2{font-size:1.4em}
.md-preview h3{font-size:1.2em} .md-preview h4{font-size:1.05em}
.md-preview p{margin:.6em 0}
.md-preview a{color:#7ec5ff}
.md-preview code{background:#2a2a2a; padding:1px 5px; border-radius:3px; font-family:var(--mono); font-size:12.5px}
.md-preview pre{background:#0f0f0f; padding:12px; border-radius:6px; overflow:auto; border:1px solid #2a2a2a}
.md-preview pre code{background:transparent; padding:0}
.md-preview blockquote{border-left:4px solid #444; margin:.6em 0; padding:.2em 12px; color:#bbb; background:#222}
.md-preview table{border-collapse:collapse; margin:.6em 0}
.md-preview th,.md-preview td{border:1px solid #444; padding:4px 8px}
.md-preview th{background:#2a2a2a}
.md-preview ul,.md-preview ol{padding-left:1.6em}
.md-preview img{max-width:100%}
.md-preview hr{border:none; border-top:1px solid #333; margin:1em 0}
.binary-msg{padding:24px; color:var(--muted); text-align:center}
.lock-msg{padding:10px 14px; background:#3a2c0d; color:#ffd97a; border-bottom:1px solid #5a420c; font-size:13px}

body.auth{background:var(--bg); display:flex; align-items:center; justify-content:center; min-height:100vh}