:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --line: #e6ebf2;
  --text: #1c2434;
  --muted: #667085;
  --brand: #2f6bff;
  --brand-soft: #eaf1ff;
  --success: #16a06f;
  --success-soft: #e8f7f1;
  --danger: #d64545;
  --danger-soft: #fff0f0;
  --shadow: 0 14px 40px rgba(23, 32, 51, 0.08);
  --radius: 16px;
  --font: "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
}

a { color: inherit; text-decoration: none; }
code {
  padding: 2px 6px;
  border-radius: 8px;
  background: #f2f5f9;
}

.layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
}

.sidebar {
  padding: 28px 18px;
  background: #101828;
}

.brand {
  margin-bottom: 24px;
  color: #fff;
  font-size: 20px;
  font-weight: 700;
}

.nav-item {
  display: block;
  margin-bottom: 10px;
  padding: 12px 14px;
  border-radius: 12px;
  color: #c8d1e0;
}

.nav-item.active,
.nav-item:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.main {
  padding: 28px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 22px;
}

.topbar h1,
.panel h2,
.login-card h1 {
  margin: 0 0 8px;
}

.subtitle,
.muted {
  color: var(--muted);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.chip {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  background: #eef2f7;
  color: var(--muted);
  font-size: 12px;
}

.chip.brand { background: var(--brand-soft); color: var(--brand); }
.chip.success { background: var(--success-soft); color: var(--success); }
.chip.danger { background: var(--danger-soft); color: var(--danger); }

.ghost-link,
.ghost-btn,
.primary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  cursor: pointer;
}

.primary-btn {
  border-color: var(--brand);
  background: var(--brand);
  color: #fff;
}

.primary-btn.fit,
.ghost-btn.fit {
  width: fit-content;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.metric-card,
.panel,
.login-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.metric-card {
  padding: 20px;
}

.metric-card strong {
  display: block;
  margin-bottom: 8px;
  font-size: 28px;
}

.panel {
  margin-top: 18px;
  padding: 18px;
}

.panel-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.kv-list,
.note-list,
.form-grid {
  display: grid;
  gap: 14px;
}

.kv-list div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fbfcfe;
}

.note-list {
  margin: 0;
  padding-left: 18px;
  line-height: 1.8;
}

.form-grid label {
  display: grid;
  gap: 8px;
}

.form-grid.two-cols {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.form-grid .full {
  grid-column: 1 / -1;
}

input,
select,
textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid #d7e0ee;
  border-radius: 12px;
  background: #fff;
  font: inherit;
}

textarea {
  resize: vertical;
}

.inline-form {
  display: flex;
  gap: 12px;
  align-items: center;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
}

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

.data-table th {
  color: var(--muted);
  background: #fbfcfe;
}

.cell-input.narrow {
  max-width: 88px;
}

.cell-textarea {
  min-height: 88px;
}

.button-row {
  display: flex;
  justify-content: flex-end;
  margin-top: 16px;
}

.button-row.left {
  justify-content: flex-start;
}

.tab-row {
  display: flex;
  gap: 10px;
}

.tab-link {
  padding: 10px 14px;
  border-radius: 12px;
  background: #f3f6fb;
  color: var(--muted);
}

.tab-link.active {
  background: var(--brand-soft);
  color: var(--brand);
}

.pre-cell {
  max-width: 380px;
  white-space: pre-wrap;
  word-break: break-all;
  color: var(--muted);
}

.alert {
  margin-bottom: 16px;
  padding: 12px 14px;
  border-radius: 12px;
}

.alert.success {
  background: var(--success-soft);
  color: var(--success);
}

.alert.error {
  background: var(--danger-soft);
  color: var(--danger);
}

.login-body {
  display: grid;
  place-items: center;
  min-height: 100vh;
}

.login-card {
  width: min(420px, calc(100% - 24px));
  padding: 28px;
}

@media (max-width: 1100px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { display: flex; gap: 10px; flex-wrap: wrap; }
  .nav-item { margin-bottom: 0; }
  .metrics,
  .panel-grid,
  .form-grid.two-cols { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  .main { padding: 16px; }
  .topbar,
  .inline-form { flex-direction: column; align-items: stretch; }
  .metrics,
  .panel-grid,
  .form-grid.two-cols { grid-template-columns: 1fr; }
}