:root {
  --bg: #f5f7fa;
  --panel: #fff;
  --text: #172033;
  --muted: #667085;
  --line: #dfe6eb;
  --blue: #1d5fd1;
  --green: #067647;
  --red: #b42318;
  --amber: #b54708;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
}

button,
input,
select,
textarea {
  font: inherit;
}

.hidden {
  display: none !important;
}

.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 20px;
}

.login-card {
  width: min(420px, 100%);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
  box-shadow: 0 16px 48px rgba(23, 32, 51, .08);
}

.login-card h1 {
  margin: 0 0 8px;
  font-size: 24px;
}

.login-card p,
.message,
.muted {
  color: var(--muted);
}

label {
  display: grid;
  gap: 6px;
  margin: 10px 0;
  color: #344054;
  font-size: 13px;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid #cfd8df;
  border-radius: 6px;
  padding: 9px 10px;
  background: #fff;
  color: var(--text);
}

textarea {
  min-height: 130px;
  resize: vertical;
}

.layout {
  display: grid;
  grid-template-columns: 230px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: #111827;
  color: #fff;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.brand strong,
.brand span {
  display: block;
}

.brand span {
  color: #b6c2d0;
  font-size: 12px;
  margin-top: 4px;
}

#nav {
  display: grid;
  gap: 6px;
}

.nav-btn {
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: #d8dee8;
  padding: 10px;
  text-align: left;
  cursor: pointer;
}

.nav-btn.active,
.nav-btn:hover {
  background: #263244;
  color: #fff;
}

.main {
  min-width: 0;
}

.topbar {
  height: 72px;
  background: #fff;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
}

.topbar h2 {
  margin: 0;
  font-size: 20px;
}

.topbar p {
  margin: 4px 0 0;
  color: var(--muted);
}

#pageBody {
  padding: 18px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  margin-bottom: 14px;
}

.section-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
}

.section-title h3 {
  margin: 0;
  font-size: 16px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 10px;
}

.stat {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: #fbfcfd;
}

.stat strong {
  display: block;
  font-size: 22px;
}

.stat span {
  color: var(--muted);
  font-size: 13px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 10px;
}

.check-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 10px 0 16px;
}

.check-row label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin: 0;
}

.narrow-form {
  max-width: 420px;
}

.row-actions,
.toolbar {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.toolbar {
  justify-content: space-between;
  margin-bottom: 12px;
}

.filters {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.btn {
  border: 1px solid #cfd8df;
  border-radius: 6px;
  background: #fff;
  color: var(--text);
  padding: 8px 10px;
  cursor: pointer;
}

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

.btn.ghost {
  background: transparent;
  color: #fff;
  border-color: #3a4658;
}

.btn.danger {
  color: var(--red);
  border-color: #f1b7b0;
}

.table-wrap {
  overflow: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 960px;
  font-size: 13px;
}

th,
td {
  border-bottom: 1px solid #eef2f4;
  text-align: left;
  padding: 9px 8px;
  vertical-align: top;
}

th {
  background: #f8fafc;
  color: #344054;
  position: sticky;
  top: 0;
}

.pill,
.badge {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  border-radius: 999px;
  padding: 2px 8px;
  font-size: 12px;
  background: #eef4ff;
  color: #174ea6;
}

.badge.good {
  background: #ecfdf3;
  color: var(--green);
}

.badge.bad {
  background: #fef3f2;
  color: var(--red);
}

.badge.warn {
  background: #fff7ed;
  color: var(--amber);
}

.toast {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 20;
  max-width: 420px;
  background: #172033;
  color: #fff;
  border-radius: 8px;
  padding: 10px 12px;
}

@media (max-width: 840px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
  }

  #nav {
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  }
}