:root {
  --bg: #f4f7fb;
  --panel: #ffffff;
  --panel-border: #d9e2ef;
  --text: #1f2937;
  --muted: #6b7280;
  --primary: #0f766e;
  --primary-dark: #115e59;
  --danger: #b91c1c;
  --danger-bg: #fee2e2;
  --success: #166534;
  --success-bg: #dcfce7;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  --radius: 16px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(15, 118, 110, 0.08), transparent 28%),
    linear-gradient(180deg, #f8fbff 0%, var(--bg) 100%);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

a {
  color: inherit;
  text-decoration: none;
}

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

.login-wrapper {
  width: 100%;
  max-width: 460px;
}

.login-card,
.panel,
.stat-card {
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.login-card {
  padding: 32px;
}

.login-brand h1,
.brand h1,
.page-header h2 {
  margin: 0;
}

.login-brand p,
.page-header p,
.stat-meta,
.table-meta,
.brand span {
  color: var(--muted);
}

.form-grid {
  display: grid;
  gap: 18px;
}

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-weight: 600;
}

.form-group input,
.form-group select {
  width: 100%;
  height: 42px;
  padding: 0 12px;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  outline: none;
  background: #fff;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-group input:focus,
.form-group select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.12);
}

.btn {
  height: 42px;
  padding: 0 18px;
  border: none;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-weight: 600;
  transition: transform 0.2s ease, opacity 0.2s ease, background 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
}

.btn-secondary {
  color: var(--text);
  background: #e5e7eb;
}

.btn-block {
  width: 100%;
}

.alert {
  padding: 12px 14px;
  border-radius: 12px;
  margin-bottom: 18px;
  font-size: 14px;
}

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

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(217, 226, 239, 0.9);
}

.topbar-inner,
.page-container {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.topbar-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 14px;
}

.nav-links a {
  padding: 10px 14px;
  border-radius: 10px;
  color: var(--muted);
}

.nav-links a.active,
.nav-links a:hover {
  color: var(--primary-dark);
  background: rgba(15, 118, 110, 0.1);
}

.page-container {
  padding: 28px 0 40px;
}

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 22px;
}

.header-actions {
  display: flex;
  gap: 12px;
  align-items: center;
}

.page-header.compact {
  margin-bottom: 16px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.stat-card {
  padding: 24px;
}

.stat-label {
  display: block;
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 12px;
}

.stat-value {
  font-size: 30px;
  font-weight: 700;
}

.stat-meta {
  display: block;
  margin-top: 10px;
  font-size: 13px;
}

.panel {
  padding: 22px;
  margin-bottom: 18px;
}

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

.range-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.filter-actions,
.form-actions {
  display: flex;
  gap: 12px;
  align-items: center;
}

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

.data-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 980px;
}

.data-table th,
.data-table td {
  padding: 14px 12px;
  border-bottom: 1px solid #e5e7eb;
  text-align: left;
  vertical-align: middle;
}

.data-table th {
  background: #f8fafc;
  color: #475569;
  font-weight: 700;
}

.table-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.inline-form {
  display: inline;
  margin: 0;
}

.text-link {
  border: none;
  background: transparent;
  color: var(--primary-dark);
  cursor: pointer;
  padding: 0;
  font: inherit;
}

.danger-link {
  color: var(--danger);
}

.pagination {
  display: flex;
  gap: 8px;
  margin-top: 18px;
  flex-wrap: wrap;
}

.pagination a {
  min-width: 38px;
  height: 38px;
  padding: 0 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: #f1f5f9;
  color: #475569;
}

.pagination a.active {
  color: #fff;
  background: var(--primary);
}

.field-error {
  font-size: 13px;
  color: var(--danger);
}

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

.empty-cell {
  text-align: center;
  color: var(--muted);
}

@media (max-width: 900px) {
  .two-columns,
  .stats-grid,
  .filter-grid {
    grid-template-columns: 1fr;
  }

  .page-header,
  .topbar-inner {
    flex-direction: column;
    align-items: stretch;
  }

  .header-actions {
    flex-direction: column;
  }

  .nav-links {
    flex-wrap: wrap;
  }
}