:root {
  --bg: #f4f6f9;
  --panel: #fff;
  --text: #1f2933;
  --muted: #6b7785;
  --line: #e3e8ee;
  --primary: #1e6fd9;
  --primary-dark: #1758ad;
  --danger: #d64545;
  --ok: #1f9d55;
  --warn: #c77c02;
  --radius: 8px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font: 14px/1.6 -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}

/* 布局 */
.layout { display: flex; min-height: 100vh; }
.sidebar {
  width: 200px; flex-shrink: 0; background: #16202c; color: #c8d1dc;
  display: flex; flex-direction: column;
}
.brand { padding: 20px; font-size: 16px; font-weight: 600; color: #fff; }
.nav a {
  display: block; padding: 10px 20px; color: inherit; text-decoration: none;
  border-left: 3px solid transparent;
}
.nav a:hover { background: #1d2a39; color: #fff; }
.nav a.active { background: #1d2a39; color: #fff; border-left-color: var(--primary); }
.sidebar .user { margin-top: auto; padding: 16px 20px; font-size: 13px; border-top: 1px solid #243244; }
.sidebar .user button { margin-top: 8px; width: 100%; }
.main { flex: 1; min-width: 0; padding: 24px 28px; }
.main h1 { margin: 0 0 20px; font-size: 20px; }

/* 卡片与面板 */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; margin-bottom: 20px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }
.card .label { color: var(--muted); font-size: 13px; }
.card .value { font-size: 22px; font-weight: 600; margin-top: 4px; word-break: break-all; }
.card .sub { color: var(--muted); font-size: 12px; margin-top: 4px; word-break: break-all; }
.card.danger { border-color: #f0c4c4; background: #fff5f5; }
.card.danger .value, .card.danger .sub { color: var(--danger); }
.card.danger .sub { font-weight: 600; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; margin-bottom: 20px; }
.panel h2 { margin: 0 0 12px; font-size: 15px; }

/* 表格 */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { color: var(--muted); font-weight: 500; font-size: 13px; background: #fafbfc; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
tr:hover td { background: #fafcff; }
.mono { font-family: var(--mono); font-size: 13px; }
.wrap { white-space: normal; word-break: break-all; }
.empty { color: var(--muted); text-align: center; padding: 28px; }

/* 表单 */
.toolbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 12px; }
.toolbar .spacer { flex: 1; }
input, select, textarea {
  font: inherit; padding: 7px 10px; border: 1px solid #cdd5df; border-radius: 6px; background: #fff; color: inherit;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(30,111,217,.15); }
input.addr { width: 330px; font-family: var(--mono); font-size: 13px; }
textarea { width: 100%; min-height: 200px; font-family: var(--mono); font-size: 12px; }
label.field { display: block; margin-bottom: 12px; }
label.field span { display: block; color: var(--muted); font-size: 13px; margin-bottom: 4px; }
label.field input { width: 100%; }
label.check { display: inline-flex; gap: 4px; align-items: center; color: var(--muted); }

button {
  font: inherit; padding: 7px 14px; border-radius: 6px; border: 1px solid #cdd5df; background: #fff; color: var(--text); cursor: pointer;
}
button:hover { border-color: var(--primary); color: var(--primary); }
button:disabled { opacity: .5; cursor: not-allowed; }
button.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
button.primary:hover { background: var(--primary-dark); color: #fff; }
button.danger { color: var(--danger); border-color: #f0c4c4; }
button.danger:hover { background: var(--danger); color: #fff; border-color: var(--danger); }
button.small { padding: 3px 9px; font-size: 12px; }
button.link { border: none; background: none; color: var(--primary); padding: 0; }
.actions { display: flex; gap: 6px; }

/* 标签 */
.tag { display: inline-block; padding: 1px 8px; border-radius: 10px; font-size: 12px; background: #eef1f5; color: var(--muted); }
.tag.ok { background: #e3f6ec; color: var(--ok); }
.tag.warn { background: #fff4e0; color: var(--warn); }
.tag.danger { background: #fde8e8; color: var(--danger); }
.tabs { display: flex; gap: 4px; margin-bottom: 12px; border-bottom: 1px solid var(--line); }
.tabs button { border: none; border-bottom: 2px solid transparent; border-radius: 0; background: none; padding: 8px 14px; }
.tabs button.active { border-bottom-color: var(--primary); color: var(--primary); }

/* 键值列表 */
dl.kv { display: grid; grid-template-columns: 150px 1fr; gap: 6px 12px; margin: 0; }
dl.kv dt { color: var(--muted); }
dl.kv dd { margin: 0; word-break: break-all; }

/* 分页 */
.pager { display: flex; gap: 8px; align-items: center; justify-content: flex-end; margin-top: 12px; color: var(--muted); }

/* 弹窗 */
.modal-mask { position: fixed; inset: 0; background: rgba(15,23,32,.45); display: flex; align-items: center; justify-content: center; z-index: 100; padding: 20px; }
.modal { background: #fff; border-radius: 10px; width: 520px; max-width: 100%; max-height: 90vh; overflow: auto; padding: 22px; box-shadow: 0 10px 40px rgba(0,0,0,.2); }
.modal.wide { width: 760px; }
.modal h3 { margin: 0 0 14px; font-size: 16px; }
.modal .buttons { display: flex; justify-content: flex-end; gap: 8px; margin-top: 16px; }
.modal .warning { background: #fff4e0; color: #8a5a00; padding: 10px 12px; border-radius: 6px; margin-bottom: 12px; }

/* 登录 */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; }
.login { width: 360px; background: #fff; padding: 32px; border-radius: 12px; box-shadow: 0 4px 24px rgba(0,0,0,.08); }
.login h1 { font-size: 20px; margin: 0 0 20px; text-align: center; }
.login button { width: 100%; margin-top: 4px; }
.error { color: var(--danger); margin: 8px 0; min-height: 1.2em; }

/* 提示 */
.toast { position: fixed; top: 20px; right: 20px; background: #16202c; color: #fff; padding: 10px 16px; border-radius: 6px; z-index: 200; max-width: 420px; box-shadow: 0 4px 16px rgba(0,0,0,.2); }
.toast.error { background: var(--danger); }
.muted { color: var(--muted); }
.result { margin-top: 12px; }

@media (max-width: 800px) {
  .layout { flex-direction: column; }
  .sidebar { width: 100%; }
  .nav { display: flex; overflow-x: auto; }
  .nav a { border-left: none; border-bottom: 3px solid transparent; white-space: nowrap; }
  .nav a.active { border-bottom-color: var(--primary); }
  .main { padding: 16px; }
  input.addr { width: 100%; }
}