:root {
  --bg: #f6f7f9; --panel: #fff; --text: #1d2330; --muted: #6b7280; --line: #e5e7eb;
  --accent: #ff5a1f; --accent-ink: #fff; --ok: #0f7b4b; --ok-bg: #e7f6ee; --warn: #9a5b00; --warn-bg: #fff4e0;
  --danger: #c0262d; --danger-bg: #fdecec; --blue: #2457c5; --blue-bg: #e9effc;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111318; --panel: #1a1d24; --text: #e6e8ec; --muted: #9aa1ad; --line: #2b303a;
    --ok: #5fd39a; --ok-bg: #12301f; --warn: #f2b45a; --warn-bg: #33270f; --danger: #ff7b80; --danger-bg: #3a1618; --blue: #8fb0ff; --blue-bg: #18223b;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 14px/1.6 -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif; }
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 22px; margin: 0; }
h2 { font-size: 15px; margin: 0 0 12px; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.nowrap { white-space: nowrap; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12.5px; }

.topbar { position: sticky; top: 0; z-index: 10; display: flex; align-items: center; gap: 24px; padding: 0 20px; height: 52px; background: var(--panel); border-bottom: 1px solid var(--line); }
.logo { display: flex; align-items: center; gap: 8px; font-weight: 700; color: var(--text); }
.topbar nav { display: flex; gap: 4px; flex: 1; overflow-x: auto; }
.topbar nav a { padding: 6px 12px; border-radius: 6px; color: var(--text); white-space: nowrap; }
.topbar nav a.active, .topbar nav a:hover { background: var(--bg); text-decoration: none; }
.topbar nav a.active { font-weight: 600; }
.topbar-right { display: flex; align-items: center; gap: 16px; white-space: nowrap; }
.topbar-right form { margin: 0; }

.wrap { max-width: 1280px; margin: 0 auto; padding: 24px 20px 64px; }
.page-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 20px; flex-wrap: wrap; }
.actions { display: flex; gap: 8px; align-items: center; }
.actions form { margin: 0; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 7px 14px; border-radius: 7px; border: 1px solid var(--line); background: var(--panel); color: var(--text); font: inherit; cursor: pointer; white-space: nowrap; }
.btn:hover { border-color: var(--muted); text-decoration: none; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 600; }
.btn.danger { color: var(--danger); border-color: var(--danger); background: transparent; }
button.link { background: none; border: 0; padding: 0; color: var(--blue); font: inherit; cursor: pointer; }
button.link.danger { color: var(--danger); }

.flash { padding: 10px 14px; border-radius: 8px; margin: 0 0 16px; }
.flash.ok { background: var(--ok-bg); color: var(--ok); }
.flash.error { background: var(--danger-bg); color: var(--danger); }

.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 16px; }
.panel h2:not(:first-child) { margin-top: 20px; }
.stat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 12px; margin-bottom: 20px; }
.stat { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; color: var(--text); }
.stat:hover { border-color: var(--accent); text-decoration: none; }
.stat strong { display: block; font-size: 24px; font-variant-numeric: tabular-nums; }
.stat span { color: var(--muted); font-size: 13px; }
.two-col { display: grid; grid-template-columns: 2fr 1fr; gap: 16px; align-items: start; }
.plain { list-style: none; margin: 0; padding: 0; }
.plain li { padding: 4px 0; }

.table { width: 100%; border-collapse: collapse; background: var(--panel); }
.table th, .table td { padding: 9px 10px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.table th { font-size: 12px; color: var(--muted); font-weight: 600; }
.table.posts { border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.table tr:hover td { background: color-mix(in srgb, var(--bg) 60%, transparent); }

.badge { display: inline-block; padding: 1px 8px; margin-right: 4px; border-radius: 99px; font-size: 12px; background: var(--bg); color: var(--muted); }
.badge.published { background: var(--ok-bg); color: var(--ok); }
.badge.scheduled { background: var(--blue-bg); color: var(--blue); }
.badge.draft { background: var(--warn-bg); color: var(--warn); }
.badge.noindex { background: var(--danger-bg); color: var(--danger); }

input, select, textarea { width: 100%; padding: 7px 10px; border: 1px solid var(--line); border-radius: 7px; background: var(--panel); color: var(--text); font: inherit; }
input:focus, select:focus, textarea:focus { outline: 2px solid color-mix(in srgb, var(--accent) 40%, transparent); border-color: var(--accent); }
input[type="checkbox"] { width: auto; }
label { display: block; margin-bottom: 12px; font-size: 13px; color: var(--muted); }
label > input, label > select, label > textarea { margin-top: 4px; color: var(--text); }
label.check { display: flex; align-items: center; gap: 8px; color: var(--text); }
.filters, .bulkbar { display: flex; gap: 8px; margin-bottom: 12px; flex-wrap: wrap; }
.filters input[type="search"], .filters input:not([type]) { flex: 1; min-width: 200px; }
.filters select, .bulkbar select { width: auto; }
.pager { display: flex; gap: 12px; align-items: center; justify-content: center; margin-top: 16px; }

.editor-grid { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 20px; align-items: start; }
.editor-side { display: grid; gap: 12px; position: sticky; top: 68px; max-height: calc(100vh - 84px); overflow-y: auto; }
.editor-main input[name="title"] { font-size: 18px; font-weight: 600; }
.counter { display: block; text-align: right; font-size: 12px; color: var(--muted); margin-top: 2px; }
.counter.over { color: var(--danger); }
.md-tabs { display: flex; gap: 4px; align-items: center; margin-bottom: 6px; }
.md-tabs button { border: 1px solid var(--line); background: var(--panel); color: var(--text); padding: 4px 12px; border-radius: 6px; cursor: pointer; font: inherit; }
.md-tabs button.active { background: var(--text); color: var(--panel); }
.md-tabs .small { margin-left: auto; }
textarea.md { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13.5px; line-height: 1.7; min-height: 60vh; resize: vertical; }
.preview { background: var(--panel); border: 1px solid var(--line); border-radius: 7px; padding: 8px 24px; min-height: 60vh; font-size: 15px; line-height: 1.8; }
.preview table { border-collapse: collapse; }
.preview th, .preview td { border: 1px solid var(--line); padding: 4px 8px; }
.preview img { max-width: 100%; }
.cover-preview { width: 100%; border-radius: 6px; margin: 8px 0; aspect-ratio: 16 / 9; object-fit: cover; }
.upload { width: 100%; margin-top: 8px; }
.checks { list-style: none; padding: 0; margin: 0; font-size: 13px; }
.checks li { padding: 3px 0; }
.checks .ok { color: var(--ok); }
.checks .warn { color: var(--warn); }
.panel.danger { border-color: var(--danger-bg); }
.settings-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(420px, 1fr)); gap: 16px; align-items: start; }
.settings-grid textarea { margin-bottom: 12px; }

.login-page { display: grid; place-items: center; min-height: 100vh; padding: 16px; }
.login-card { width: 100%; max-width: 360px; background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 28px; text-align: center; }
.login-card h1 { margin: 12px 0 20px; font-size: 20px; }
.login-card label { text-align: left; }
.login-card .btn { width: 100%; padding: 10px; }

@media (max-width: 900px) {
  .two-col, .editor-grid { grid-template-columns: 1fr; }
  .editor-side { position: static; max-height: none; }
  .settings-grid { grid-template-columns: 1fr; }
  .topbar { gap: 12px; padding: 0 12px; }
  .topbar-right a { display: none; }
  .wrap { padding: 16px 16px 48px; }
  .table.posts th:nth-child(5), .table.posts td:nth-child(5), .table.posts th:nth-child(6), .table.posts td:nth-child(6) { display: none; }
}