:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --surface-2: #f0f2f5;
  --border: #e3e6eb;
  --text: #1c2129;
  --muted: #6b7380;
  --primary: #2563eb;
  --primary-soft: #e8efff;
  --ok: #16a34a;
  --ok-soft: #e7f6ec;
  --warn: #b45309;
  --warn-soft: #fdf3e2;
  --danger: #dc2626;
  --danger-soft: #fdeceb;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .05);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111317;
    --surface: #1a1d23;
    --surface-2: #22262e;
    --border: #2d323b;
    --text: #e6e8eb;
    --muted: #949aa5;
    --primary: #5b8cff;
    --primary-soft: #1f2a44;
    --ok: #4ade80;
    --ok-soft: #16301f;
    --warn: #fbbf24;
    --warn-soft: #3a2c10;
    --danger: #f87171;
    --danger-soft: #3b1a1a;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 14px/1.6 system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}
[hidden] { display: none !important; }
h1 { font-size: 20px; margin: 0; }
h2 { font-size: 15px; margin: 0 0 12px; }
h3 { font-size: 14px; margin: 18px 0 4px; }
.muted { color: var(--muted); }
.small { font-size: 12.5px; }
.error-text { color: var(--danger); min-height: 1.4em; margin: 0; }

/* ---------- 布局 ---------- */
.layout { display: flex; min-height: 100vh; }
.sidebar {
  width: 200px; flex-shrink: 0;
  background: var(--surface); border-right: 1px solid var(--border);
  display: flex; flex-direction: column; padding: 18px 12px; gap: 2px;
  position: sticky; top: 0; height: 100vh;
}
.sidebar a {
  padding: 8px 12px; border-radius: 8px; cursor: pointer; color: var(--muted); user-select: none;
}
.sidebar a:hover { background: var(--surface-2); color: var(--text); }
.sidebar a.active { background: var(--primary-soft); color: var(--primary); font-weight: 600; }
.sidebar .spacer { flex: 1; }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 15px; padding: 0 8px 16px; }
.brand.big { font-size: 18px; padding: 0 0 4px; }
.logo {
  width: 22px; height: 22px; border-radius: 6px; background: var(--primary); position: relative; flex-shrink: 0;
}
.logo::after {
  content: ""; position: absolute; inset: 6px 5px; border-top: 2px solid #fff; border-bottom: 2px solid #fff;
}
main { flex: 1; min-width: 0; padding: 24px 28px 48px; max-width: 1200px; }
.page-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; gap: 12px; flex-wrap: wrap; }

.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px 20px; margin-bottom: 16px; box-shadow: var(--shadow);
}
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.card-head h2 { margin: 0; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-2 > .card { margin-bottom: 0; }
.grid-2 + .card { margin-top: 16px; }
.row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }

/* ---------- 表单 ---------- */
input, select, textarea {
  font: inherit; color: var(--text); background: var(--surface);
  border: 1px solid var(--border); border-radius: 8px; padding: 7px 10px; outline: none;
}
input:focus, select:focus, textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
textarea { width: 100%; resize: vertical; font-family: ui-monospace, Consolas, "Microsoft YaHei", monospace; font-size: 13px; line-height: 1.55; }
.fields { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px 18px; margin-bottom: 14px; }
.fields label { display: flex; flex-direction: column; gap: 5px; font-size: 13px; color: var(--muted); }
.fields input { color: var(--text); }
.form-inline { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-bottom: 8px; }
.w-num { width: 80px; }
.check, .radio { display: inline-flex; align-items: center; gap: 6px; cursor: pointer; }
.option-row { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.option-row .divider { width: 1px; height: 18px; background: var(--border); }

.btn {
  font: inherit; cursor: pointer; border-radius: 8px; padding: 7px 14px;
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
  white-space: nowrap;
}
.btn:hover { background: var(--surface-2); }
.btn:disabled { opacity: .55; cursor: default; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.danger { color: var(--danger); border-color: var(--danger); }
.btn.danger:hover { background: var(--danger-soft); }
.btn.ghost { border-color: transparent; background: transparent; color: var(--muted); }
.btn.ghost:hover { background: var(--surface-2); color: var(--text); }
.btn.small { padding: 4px 10px; font-size: 12.5px; }
.dirty { color: var(--warn); font-size: 12.5px; }

/* ---------- 登录 ---------- */
.login-wrap { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login-card { width: 100%; max-width: 340px; display: flex; flex-direction: column; gap: 12px; }
.login-card p { margin: 0; }

/* ---------- 总览 ---------- */
.stats { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 12px; margin-bottom: 16px; }
.stat { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; box-shadow: var(--shadow); }
.stat .label { color: var(--muted); font-size: 12.5px; }
.stat .value { font-size: 20px; font-weight: 650; margin-top: 2px; display: flex; align-items: center; gap: 8px; }
.stat .sub { color: var(--muted); font-size: 12.5px; margin-top: 2px; word-break: break-all; }
.dot { width: 9px; height: 9px; border-radius: 50%; background: var(--muted); flex-shrink: 0; }
.dot.ok { background: var(--ok); }
.dot.warn { background: var(--warn); }
.dot.bad { background: var(--danger); }

.msg-list { display: flex; flex-direction: column; }
.msg { display: grid; grid-template-columns: 50px 160px 1fr; gap: 10px; padding: 7px 0; border-top: 1px solid var(--border); font-size: 13px; }
.msg:first-child { border-top: 0; }
.msg .t { color: var(--muted); font-variant-numeric: tabular-nums; }
.msg .where { color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.msg .body { min-width: 0; word-break: break-word; }
.msg .who { font-weight: 600; margin-right: 6px; }
.empty { color: var(--muted); padding: 24px 0; text-align: center; }

/* ---------- QQ ---------- */
.qr-box { display: flex; gap: 20px; align-items: flex-start; flex-wrap: wrap; }
.qr { background: #fff; border-radius: 8px; padding: 6px; border: 1px solid var(--border); line-height: 0; }
.qr svg { width: 200px; height: 200px; }
.badge { display: inline-flex; align-items: center; gap: 6px; padding: 3px 10px; border-radius: 999px; font-size: 12.5px; font-weight: 600; }
.badge.ok { background: var(--ok-soft); color: var(--ok); }
.badge.warn { background: var(--warn-soft); color: var(--warn); }
.badge.bad { background: var(--danger-soft); color: var(--danger); }
.profile { display: flex; align-items: center; gap: 14px; margin: 12px 0; }
.avatar { width: 52px; height: 52px; border-radius: 50%; background: var(--surface-2); object-fit: cover; }
.account-list { display: flex; flex-direction: column; gap: 8px; margin-top: 8px; }
.account { display: flex; align-items: center; gap: 10px; padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px; }
.account img { width: 32px; height: 32px; border-radius: 50%; }
.account .name { flex: 1; min-width: 0; }
.danger-zone { border-color: color-mix(in srgb, var(--danger) 35%, var(--border)); }

/* ---------- 群表格 ---------- */
.toolbar { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-bottom: 12px; }
.toolbar input[type=search] { flex: 1; min-width: 180px; }
.table-wrap { overflow: auto; max-height: 62vh; border: 1px solid var(--border); border-radius: 8px; }
.table { width: 100%; border-collapse: collapse; font-size: 13px; }
.table th { position: sticky; top: 0; background: var(--surface-2); text-align: left; font-weight: 600; color: var(--muted); padding: 8px 10px; z-index: 1; }
.table td { padding: 7px 10px; border-top: 1px solid var(--border); }
.table tr.off td:not(:first-child) { color: var(--muted); }
.table tbody tr:hover { background: var(--surface-2); }
.table tr.pickable { cursor: pointer; }
.table tr.pickable input { pointer-events: none; }
.table input[type=checkbox] { width: 16px; height: 16px; vertical-align: middle; }
.table .num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.w-check { width: 36px; }
.tag { font-size: 11.5px; color: var(--muted); border: 1px solid var(--border); border-radius: 4px; padding: 0 4px; margin-left: 6px; }

/* ---------- 摘要 ---------- */
.summary-layout { display: grid; grid-template-columns: 260px 1fr; gap: 16px; align-items: start; }
.summary-layout > .card { margin-bottom: 0; }
.summary-list { max-height: 75vh; overflow: auto; }
.sum-item { padding: 8px 10px; border-radius: 8px; cursor: pointer; }
.sum-item:hover { background: var(--surface-2); }
.sum-item.active { background: var(--primary-soft); }
.sum-item .n { font-weight: 600; font-variant-numeric: tabular-nums; }
.sum-item .s { color: var(--muted); font-size: 12px; }
.progress { height: 6px; background: var(--surface-2); border-radius: 999px; overflow: hidden; margin-top: 8px; max-width: 360px; }
.progress > div { height: 100%; background: var(--primary); transition: width .3s; }

.markdown { line-height: 1.75; word-break: break-word; }
.markdown h1 { font-size: 18px; margin: 0 0 4px; }
.markdown h2 { font-size: 16px; margin: 24px 0 8px; padding-top: 16px; border-top: 1px solid var(--border); }
.markdown h2:first-of-type { border-top: 0; padding-top: 0; }
.markdown p { margin: 6px 0; }
.markdown ul { margin: 4px 0 8px; padding-left: 20px; }
.markdown li { margin: 2px 0; }
.markdown blockquote { margin: 6px 0; padding: 4px 12px; border-left: 3px solid var(--danger); background: var(--danger-soft); border-radius: 4px; }
.markdown code { background: var(--surface-2); padding: 1px 5px; border-radius: 4px; font-size: 12.5px; }

/* ---------- 设置 ---------- */
.presets { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 14px; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; margin: 12px 0; }
.chip { display: inline-flex; align-items: center; gap: 4px; padding: 3px 4px 3px 10px; background: var(--primary-soft); color: var(--primary); border-radius: 999px; font-variant-numeric: tabular-nums; }
.chip button { border: 0; background: none; color: inherit; cursor: pointer; font-size: 15px; line-height: 1; padding: 0 5px; border-radius: 50%; }
.chip button:hover { background: rgba(0, 0, 0, .08); }
.ok-text { color: var(--ok); }
.bad-text { color: var(--danger); }

.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--text); color: var(--surface); padding: 9px 18px; border-radius: 8px;
  box-shadow: 0 6px 24px rgba(0, 0, 0, .18); z-index: 100; max-width: calc(100vw - 32px);
}
.toast.bad { background: var(--danger); color: #fff; }

/* ---------- 窄屏 ---------- */
@media (max-width: 860px) {
  .layout { flex-direction: column; }
  .sidebar { width: auto; height: auto; position: static; flex-direction: row; flex-wrap: wrap; align-items: center; padding: 10px 12px; border-right: 0; border-bottom: 1px solid var(--border); }
  .sidebar .brand { padding: 0 8px 0 4px; width: 100%; margin-bottom: 6px; }
  .sidebar .spacer { display: none; }
  main { padding: 16px; }
  .grid-2, .summary-layout { grid-template-columns: 1fr; }
  .msg { grid-template-columns: 44px 1fr; }
  .msg .where { grid-column: 2; }
  .msg .body { grid-column: 1 / -1; }
}