* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, "Microsoft YaHei", sans-serif;
  background: #f4f7fb;
  color: #1f2937;
}

a {
  color: #2563eb;
  text-decoration: none;
}

code {
  background: #eef2ff;
  padding: 2px 6px;
  border-radius: 6px;
}

.layout {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 220px;
  background: #101828;
  color: #fff;
  padding: 24px 16px;
}

.brand {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 24px;
}

.nav-link {
  display: block;
  padding: 12px 14px;
  border-radius: 12px;
  color: #d0d5dd;
  margin-bottom: 8px;
}

.nav-link.active,
.nav-link:hover {
  background: #1d2939;
  color: #fff;
}

.main {
  flex: 1;
  padding: 24px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.topbar-title {
  font-size: 28px;
  font-weight: 700;
}

.topbar-subtitle,
.panel-subtitle,
.helper-text {
  color: #667085;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card,
.panel,
.login-card {
  background: #fff;
  border-radius: 18px;
  padding: 24px;
  box-shadow: 0 10px 25px rgba(15, 23, 42, 0.06);
}

.stat-label {
  color: #667085;
  margin-bottom: 10px;
}

.stat-value {
  font-size: 32px;
  font-weight: 700;
}

.panel-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}

.quick-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.quick-link,
.ghost-btn,
.primary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  padding: 10px 16px;
  font-size: 14px;
  cursor: pointer;
  border: 1px solid transparent;
}

.quick-link,
.primary-btn {
  background: #2563eb;
  color: #fff;
}

.ghost-btn {
  background: #fff;
  color: #1f2937;
  border-color: #d0d5dd;
}

.inline-btn {
  height: 40px;
}

.toolbar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 16px;
}

.toolbar-input,
.toolbar-select,
input,
select,
textarea {
  width: 100%;
  border: 1px solid #d0d5dd;
  border-radius: 12px;
  padding: 10px 12px;
  font-size: 14px;
  background: #fff;
}

.toolbar-input {
  max-width: 260px;
}

.toolbar-select {
  max-width: 160px;
}

.form-grid {
  display: grid;
  gap: 16px;
}

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

.field {
  display: grid;
  gap: 8px;
}

.field span {
  font-size: 14px;
  color: #344054;
}

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

.form-actions {
  display: flex;
  gap: 12px;
}

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

.alert-danger {
  background: #fef3f2;
  color: #b42318;
}

.alert-success {
  background: #ecfdf3;
  color: #027a48;
}

.table-wrap {
  overflow-x: auto;
}

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

.data-table th,
.data-table td {
  padding: 14px 12px;
  border-bottom: 1px solid #eaecf0;
  text-align: left;
  vertical-align: top;
}

.data-table th {
  color: #475467;
  background: #f8fafc;
}

.action-cell {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.table-link,
.link-btn {
  color: #2563eb;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  font-size: 14px;
}

.danger-text {
  color: #b42318;
}

.badge {
  display: inline-flex;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
}

.badge-success {
  background: #dcfce7;
  color: #166534;
}

.badge-muted {
  background: #f2f4f7;
  color: #475467;
}

.empty-cell {
  text-align: center;
  color: #667085;
}

.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.login-card {
  width: min(460px, 100%);
}

.bizcode-panel {
  max-width: 720px;
}

.bizcode-box {
  display: flex;
  gap: 12px;
  margin: 16px 0;
}

.code-block {
  background: #101828;
  color: #fff;
  border-radius: 12px;
  padding: 14px 16px;
  margin-bottom: 12px;
  font-family: Consolas, monospace;
}

.error-panel {
  max-width: 560px;
}

@media (max-width: 960px) {
  .layout {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
  }

  .stats-grid,
  .two-columns {
    grid-template-columns: 1fr;
  }

  .bizcode-box,
  .form-actions,
  .topbar {
    flex-direction: column;
    align-items: stretch;
  }
}