:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --line: #e4e7ec;
  --text: #1f2733;
  --muted: #7b8794;
  --accent: #2563eb;
  --accent-weak: #eff4ff;
  --ok: #12805c;
  --ok-weak: #e8f6f0;
  --warn: #b45309;
  --warn-weak: #fdf3e7;
  --err: #b42318;
  --err-weak: #fdeceb;
  --radius: 10px;
}

* { box-sizing: border-box; }

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

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code { background: #eef1f5; padding: 1px 5px; border-radius: 4px; font-size: 12px; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.muted { color: var(--muted); }
.hint { color: var(--muted); font-size: 12px; margin: 10px 0 0; }

/* ---------- 侧栏 ---------- */
.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: 208px;
  background: #fff;
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  padding: 18px 12px;
  z-index: 10;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 15px;
  padding: 4px 8px 16px;
}
.brand .dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--accent);
  display: inline-block;
}

.sidebar nav { display: flex; flex-direction: column; gap: 2px; flex: 1; }

.nav-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  padding: 9px 10px;
  border-radius: 8px;
  color: #3c4757;
  font-size: 14px;
}
.nav-item:hover { background: #f2f4f7; text-decoration: none; }
.nav-item.active { background: var(--accent-weak); color: var(--accent); font-weight: 600; }
.nav-item.disabled { color: #aeb6c2; cursor: not-allowed; }
.nav-item.disabled:hover { background: transparent; }
.nav-item em {
  font-style: normal;
  font-size: 11px;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 0 4px;
  color: #aeb6c2;
}

.sidebar-foot {
  border-top: 1px solid var(--line);
  padding: 12px 8px 2px;
  font-size: 12px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2px 8px;
}
.sidebar-foot .who { font-weight: 600; color: var(--text); }
.sidebar-foot .role { color: var(--muted); }
.sidebar-foot .logout { grid-row: 1 / span 2; align-self: center; }

/* ---------- 主区 ---------- */
.main {
  margin-left: 208px;
  padding: 20px 24px 48px;
  max-width: 1180px;
}

.topbar {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}
.topbar h1 { font-size: 20px; margin: 0; }
.topbar-date { color: var(--muted); font-size: 13px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 16px;
}
.card-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}
.card-head h2 { font-size: 15px; margin: 0; }

/* KPI */
.grid-kpi {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 16px;
}
.kpi { margin: 0; display: flex; flex-direction: column; gap: 2px; padding: 16px 18px; }
.kpi-label { color: var(--muted); font-size: 13px; }
.kpi-num { font-size: 26px; font-weight: 650; letter-spacing: -0.5px; }
.kpi-sub { color: var(--muted); font-size: 12px; }

/* 表格 */
.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th, .table td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
}
.table th { color: var(--muted); font-weight: 500; font-size: 13px; background: #fafbfc; }
.table tbody tr:last-child td { border-bottom: 0; }
.table tbody tr:hover td { background: #fbfcfd; }
.row-actions { display: flex; gap: 8px; }
.row-actions form { margin: 0; }

/* 标签 */
.tag {
  display: inline-block;
  font-size: 12px;
  line-height: 18px;
  padding: 0 8px;
  border-radius: 999px;
  background: #f0f2f5;
  color: #5b6675;
  white-space: nowrap;
}
.tag-ok { background: var(--ok-weak); color: var(--ok); }
.tag-super { background: var(--accent-weak); color: var(--accent); }
.tag-doing { background: var(--warn-weak); color: var(--warn); }
.tag-off { background: var(--err-weak); color: var(--err); }

/* 列表 */
.kv { list-style: none; margin: 0; padding: 0; }
.kv li {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 9px 0;
  border-bottom: 1px dashed var(--line);
}
.kv li:last-child { border-bottom: 0; }
.kv span { color: var(--muted); }

/* 表单 */
.fld { display: flex; flex-direction: column; gap: 6px; }
.fld > span { font-size: 13px; color: #4a5565; }
.fld input, .fld select {
  height: 38px;
  padding: 0 10px;
  border: 1px solid #d6dce5;
  border-radius: 8px;
  background: #fff;
  font: inherit;
  color: var(--text);
  outline: none;
}
.fld input:focus, .fld select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, .12);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px 16px;
  align-items: start;
}
.fld-actions { justify-content: flex-end; }

.btn {
  height: 38px;
  padding: 0 16px;
  border-radius: 8px;
  border: 1px solid #d6dce5;
  background: #fff;
  color: var(--text);
  font: inherit;
  cursor: pointer;
}
.btn:hover { background: #f7f8fa; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: #1d4fd7; }
.btn-warn { color: var(--warn); border-color: #f0d3ac; background: var(--warn-weak); }
.btn-warn:hover { background: #fbe9d3; }
.btn-sm { height: 30px; padding: 0 10px; font-size: 13px; border-radius: 7px; }
.btn-block { width: 100%; }

/* flash */
.flash {
  padding: 10px 14px;
  border-radius: 8px;
  margin-bottom: 14px;
  font-size: 13.5px;
  border: 1px solid transparent;
}
.flash-ok { background: var(--ok-weak); color: var(--ok); border-color: #bfe6d6; }
.flash-error { background: var(--err-weak); color: var(--err); border-color: #f6c9c4; }
.flash-warn { background: var(--warn-weak); color: var(--warn); border-color: #f0d3ac; }

/* ---------- 登录页 ---------- */
.login-body {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: linear-gradient(160deg, #eef2f9 0%, #f7f8fa 55%, #eef4ff 100%);
  padding: 24px;
}
.login-card {
  width: 100%;
  max-width: 380px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 26px 26px 20px;
  box-shadow: 0 12px 32px rgba(23, 37, 66, .07);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.login-card .brand { padding: 0 0 2px; }
.login-sub { margin: 0 0 4px; color: var(--muted); font-size: 12.5px; }
.login-tip { margin: 2px 0 0; color: var(--muted); font-size: 12px; line-height: 1.7; }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .grid-kpi { grid-template-columns: repeat(2, 1fr); }
  .form-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 720px) {
  .sidebar {
    position: static;
    width: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    padding: 12px;
    flex-direction: row;
    align-items: center;
    gap: 10px;
  }
  .brand { padding: 0; }
  .sidebar nav {
    flex-direction: row;
    overflow-x: auto;
    gap: 4px;
    -webkit-overflow-scrolling: touch;
  }
  .nav-item { white-space: nowrap; padding: 7px 10px; }
  .nav-item em { display: none; }
  .sidebar-foot { border-top: 0; padding: 0; grid-template-columns: auto; }
  .sidebar-foot .role, .sidebar-foot .logout { display: none; }

  .main { margin-left: 0; padding: 16px 14px 40px; }
  .grid-kpi { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .kpi-num { font-size: 22px; }
  .form-grid { grid-template-columns: 1fr; }
  .card { padding: 14px; }
  .table { display: block; overflow-x: auto; white-space: nowrap; }
}