* { box-sizing: border-box; }

:root {
  --bg: #0f172a;
  --panel: #1e293b;
  --border: #334155;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --primary: #2563eb;
  --primary-hover: #3b82f6;
  --danger: #dc2626;
  --danger-hover: #ef4444;
  --success: #16a34a;
  --radius: 8px;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

a { color: var(--primary-hover); text-decoration: none; }
a:hover { color: var(--text); }

.admin-layout {
  display: flex;
  min-height: 100vh;
}

.admin-sidebar {
  width: 260px;
  background: var(--panel);
  border-right: 1px solid var(--border);
  padding: 24px 16px;
  position: fixed;
  top: 0; bottom: 0; left: 0;
  overflow-y: auto;
}

.admin-logo {
  display: flex;
  align-items: center;
  margin-bottom: 32px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.admin-logo img { height: 36px; margin-right: 10px; border-radius: 4px; }
.admin-logo span { font-size: 18px; font-weight: 700; }

.admin-nav { display: flex; flex-direction: column; gap: 8px; }

.admin-nav-item {
  padding: 12px 14px;
  border-radius: var(--radius);
  color: var(--muted);
  transition: all 0.2s;
}

.admin-nav-item:hover, .admin-nav-item.active {
  background: #334155;
  color: var(--text);
}

.admin-main {
  flex: 1;
  margin-left: 260px;
  display: flex;
  flex-direction: column;
}

.admin-header {
  padding: 16px 32px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.admin-header h1 { margin: 0; font-size: 20px; font-weight: 600; }
.admin-user { color: var(--muted); font-size: 14px; }

.admin-content {
  flex: 1;
  padding: 28px 32px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 24px;
}

.card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.card-title { margin: 0 0 8px; font-size: 18px; font-weight: 600; }
.card-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.toolbar {
  display: flex;
  gap: 10px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: #334155;
  color: var(--text);
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}

.btn:hover { background: #475569; }

.btn-primary { background: var(--primary); border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-hover); }

.btn-danger { background: var(--danger); border-color: var(--danger); }
.btn-danger:hover { background: var(--danger-hover); }

.btn-sm { padding: 6px 10px; font-size: 13px; }
.btn-xs { padding: 4px 8px; font-size: 12px; }

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.table th, .table td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.table th { color: var(--muted); font-weight: 500; }
.table tr:last-child td { border-bottom: none; }

.actions { display: flex; gap: 6px; flex-wrap: wrap; }

.inline { display: inline; }

.badge {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 4px;
  background: #334155;
  font-size: 12px;
  color: var(--text);
}

.badge-primary { background: var(--primary); }
.badge-danger { background: var(--danger); }

.text-muted { color: var(--muted); }

.form { max-width: 700px; }
.form-group { margin-bottom: 18px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 14px;
  color: var(--muted);
}

.form-group input[type="text"],
.form-group input[type="url"],
.form-group input[type="password"],
.form-group input[type="file"],
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: var(--radius);
  border: 1px solid #475569;
  background: #0f172a;
  color: var(--text);
  font-size: 14px;
  outline: none;
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--primary-hover);
}

.checkbox {
  display: flex !important;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

.checkbox input { width: auto; }

.error {
  color: #f87171;
  font-size: 13px;
  margin-top: 6px;
}

.hint {
  color: var(--muted);
  font-size: 12px;
  margin-top: 6px;
}

.form-actions { display: flex; gap: 12px; margin-top: 24px; }

.flash {
  padding: 12px 16px;
  border-radius: var(--radius);
  margin-bottom: 20px;
  border: 1px solid var(--border);
}

.flash-success { background: rgba(22, 163, 74, 0.15); border-color: var(--success); color: #86efac; }
.flash-error { background: rgba(220, 38, 38, 0.15); border-color: var(--danger); color: #fca5a5; }

.empty { color: var(--muted); text-align: center; padding: 32px; }

.grid { display: grid; gap: 20px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

.stat-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
}

.stat-value { font-size: 36px; font-weight: 700; color: var(--primary-hover); }
.stat-label { color: var(--muted); margin-top: 6px; font-size: 14px; }

/* Tree */
.tree { font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace; font-size: 14px; line-height: 1.8; }
.tree-node { margin-left: 18px; }
.tree-row { display: flex; align-items: center; gap: 8px; padding: 2px 0; }
.tree-folder > .tree-row { cursor: pointer; }
.tree-folder > .tree-row:hover { color: var(--primary-hover); }
.tree-toggle { display: inline-block; width: 14px; color: var(--muted); font-size: 12px; }
.tree-icon { font-size: 14px; }
.tree-folder .tree-name { color: #fbbf24; }
.tree-file .tree-name { color: var(--text); }
.tree-meta { color: var(--muted); font-size: 12px; margin-left: auto; }
.tree-children { display: none; }
.tree-delete { margin-left: 12px; opacity: 0; transition: opacity 0.2s; }
.tree-row:hover .tree-delete { opacity: 1; }

@media (max-width: 900px) {
  .admin-sidebar { width: 100%; position: static; }
  .admin-layout { flex-direction: column; }
  .admin-main { margin-left: 0; }
  .form-row { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
}


/* cityvistion.cn admin.html overrides */
.admin-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 24px;
}
.admin-card:not(.active) { display: none !important; }

.toc-children {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-left: 12px;
  margin-bottom: 8px;
}
.toc-child { padding: 8px 12px; font-size: 13px; }