/* ElimuGuide Admin — SaaS dashboard (red + blue brand) */

:root {
  --admin-blue: #0ea5e9;
  --admin-blue-dark: #0284c7;
  --admin-blue-light: #e0f2fe;
  --admin-blue-muted: #f0f9ff;
  --admin-red: #ef4444;
  --admin-red-dark: #dc2626;
  --admin-red-light: #fef2f2;
  --admin-bg: #f4f6f8;
  --admin-surface: #ffffff;
  --admin-border: #e5e7eb;
  --admin-border-light: #f3f4f6;
  --admin-text: #111827;
  --admin-text-secondary: #374151;
  --admin-text-muted: #6b7280;
  --admin-text-faint: #9ca3af;
  --admin-sidebar-width: 15.5rem;
  --admin-radius: 0.75rem;
  --admin-radius-lg: 1rem;
  --admin-shadow: 0 1px 2px rgba(16, 24, 40, 0.05), 0 1px 3px rgba(16, 24, 40, 0.06);
  --admin-shadow-md: 0 4px 16px rgba(16, 24, 40, 0.08);
}

.admin-app {
  min-height: 100vh;
  background: var(--admin-bg);
  color: var(--admin-text-secondary);
  font-family: Inter, ui-sans-serif, system-ui, sans-serif;
}

.admin-app-inner {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.admin-sidebar {
  display: none;
  width: var(--admin-sidebar-width);
  flex-shrink: 0;
  flex-direction: column;
  border-right: 1px solid var(--admin-border-light);
  background: var(--admin-surface);
}

@media (min-width: 768px) {
  .admin-sidebar {
    display: flex;
  }
}

.admin-sidebar-brand {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 1.25rem 1rem;
  border-bottom: 1px solid var(--admin-border-light);
}

.admin-sidebar-logo {
  display: flex;
  height: 2.25rem;
  width: 2.25rem;
  align-items: center;
  justify-content: center;
  border-radius: 0.625rem;
  background: #fff;
  overflow: hidden;
  flex-shrink: 0;
}

.admin-brand-logo-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.admin-sidebar-brand-text {
  min-width: 0;
}

.admin-sidebar-brand-name {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--admin-text);
  line-height: 1.2;
}

.admin-sidebar-brand-sub {
  font-size: 0.6875rem;
  color: var(--admin-text-faint);
}

.admin-nav {
  flex: 1;
  overflow-y: auto;
  padding: 0.75rem 0.625rem;
}

.admin-nav-section {
  margin: 0.875rem 0 0.375rem;
  padding: 0 0.625rem;
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--admin-text-faint);
}

.admin-nav-section:first-child {
  margin-top: 0;
}

.admin-nav-link {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  margin-bottom: 0.125rem;
  padding: 0.5625rem 0.625rem;
  border-radius: 0.625rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--admin-text-muted);
  text-decoration: none;
  transition: background 0.15s ease, color 0.15s ease;
}

.admin-nav-link svg {
  flex-shrink: 0;
  width: 1.125rem;
  height: 1.125rem;
  opacity: 0.75;
}

.admin-nav-link:hover {
  background: var(--admin-bg);
  color: var(--admin-text);
}

.admin-nav-link.is-active {
  background: var(--admin-blue-muted);
  color: var(--admin-blue-dark);
  font-weight: 600;
  box-shadow: inset 3px 0 0 var(--admin-blue);
}

.admin-nav-link.is-active svg {
  opacity: 1;
  color: var(--admin-blue);
}

.admin-nav-link.is-active-ref {
  background: var(--admin-red-light);
  color: var(--admin-red-dark);
  box-shadow: inset 3px 0 0 var(--admin-red);
}

.admin-sidebar-footer {
  border-top: 1px solid var(--admin-border-light);
  padding: 0.875rem 1rem;
  font-size: 0.6875rem;
  color: var(--admin-text-faint);
}

/* Main column */
.admin-main-col {
  display: flex;
  min-width: 0;
  flex: 1;
  flex-direction: column;
}

.admin-nav-mobile {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  border-bottom: 1px solid var(--admin-border-light);
  background: var(--admin-surface);
  padding: 0.5rem;
}

@media (min-width: 768px) {
  .admin-nav-mobile {
    display: none;
  }
}

/* Header */
.admin-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
  border-bottom: 1px solid var(--admin-border-light);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  padding: 0.875rem 1rem;
}

@media (min-width: 768px) {
  .admin-header {
    padding: 0.875rem 1.5rem;
  }
}

.admin-header-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--admin-text);
}

.admin-header-search {
  order: 3;
  flex: 1 1 100%;
  max-width: none;
}

@media (min-width: 768px) {
  .admin-header-search {
    order: 0;
    flex: 1;
    max-width: 28rem;
    margin: 0 auto;
  }
}

.admin-header-search-inner {
  position: relative;
}

.admin-header-search-icon {
  pointer-events: none;
  position: absolute;
  left: 0.875rem;
  top: 50%;
  width: 1rem;
  height: 1rem;
  transform: translateY(-50%);
  color: var(--admin-text-faint);
}

.admin-header-search input {
  width: 100%;
  border: 1px solid var(--admin-border);
  border-radius: 9999px;
  background: var(--admin-bg);
  padding: 0.5625rem 2.75rem 0.5625rem 2.5rem;
  font-size: 0.8125rem;
  color: var(--admin-text-secondary);
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.admin-header-search input:focus {
  border-color: var(--admin-blue);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--admin-blue) 18%, transparent);
}

.admin-header-search kbd {
  position: absolute;
  right: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  border-radius: 0.375rem;
  border: 1px solid var(--admin-border);
  background: var(--admin-surface);
  padding: 0.125rem 0.375rem;
  font-size: 0.625rem;
  color: var(--admin-text-faint);
}

.admin-header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: auto;
}

.admin-icon-btn {
  position: relative;
  display: inline-flex;
  height: 2.25rem;
  width: 2.25rem;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--admin-border-light);
  border-radius: 9999px;
  background: var(--admin-surface);
  color: var(--admin-text-muted);
  text-decoration: none;
  transition: background 0.15s ease, color 0.15s ease;
}

.admin-icon-btn:hover {
  background: var(--admin-bg);
  color: var(--admin-text);
}

.admin-notif-badge {
  position: absolute;
  right: 0.125rem;
  top: 0.125rem;
  height: 0.5rem;
  width: 0.5rem;
  border-radius: 9999px;
  background: var(--admin-red);
  border: 2px solid var(--admin-surface);
}

.admin-user-chip {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid var(--admin-border-light);
  border-radius: 9999px;
  background: var(--admin-surface);
  padding: 0.25rem 0.625rem 0.25rem 0.25rem;
}

.admin-user-avatar {
  display: flex;
  height: 1.875rem;
  width: 1.875rem;
  align-items: center;
  justify-content: center;
  border-radius: 9999px;
  background: linear-gradient(135deg, var(--admin-red) 0%, var(--admin-blue) 100%);
  font-size: 0.6875rem;
  font-weight: 700;
  color: #fff;
}

.admin-user-meta {
  display: none;
  min-width: 0;
  text-align: left;
}

@media (min-width: 640px) {
  .admin-user-meta {
    display: block;
  }
}

.admin-user-name {
  max-width: 9rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--admin-text);
}

.admin-user-role {
  font-size: 0.625rem;
  color: var(--admin-text-faint);
}

.admin-logout-link {
  border-radius: 9999px;
  padding: 0.4375rem 0.875rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--admin-text-muted);
  text-decoration: none;
  transition: background 0.15s ease;
}

.admin-logout-link:hover {
  background: var(--admin-bg);
  color: var(--admin-text);
}

/* Period pills */
.admin-period-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.admin-period-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 9999px;
  border: 1px solid var(--admin-border);
  background: var(--admin-surface);
  padding: 0.375rem 0.875rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--admin-text-muted);
  text-decoration: none;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.admin-period-pill:hover {
  border-color: var(--admin-blue-light);
  color: var(--admin-blue-dark);
}

.admin-period-pill.is-active {
  border-color: var(--admin-blue);
  background: var(--admin-blue-muted);
  color: var(--admin-blue-dark);
}

/* Main content */
.admin-main {
  flex: 1;
  padding: 1.25rem 1rem 2rem;
}

@media (min-width: 768px) {
  .admin-main {
    padding: 1.5rem 1.75rem 2.5rem;
  }
}

.admin-flash {
  margin-bottom: 1.25rem;
  border-radius: var(--admin-radius-lg);
  border: 1px solid;
  padding: 0.875rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
}

.admin-flash--success {
  border-color: #a7f3d0;
  background: #ecfdf5;
  color: #065f46;
}

.admin-flash--error {
  border-color: #fecaca;
  background: var(--admin-red-light);
  color: var(--admin-red-dark);
}

/* Cards */
.admin-card {
  border: 1px solid var(--admin-border-light);
  border-radius: var(--admin-radius-lg);
  background: var(--admin-surface);
  box-shadow: var(--admin-shadow);
}

.admin-banner {
  margin-bottom: 1.5rem;
  border: 1px solid color-mix(in srgb, var(--admin-blue) 25%, transparent);
  border-radius: var(--admin-radius-lg);
  background: linear-gradient(90deg, var(--admin-blue-muted) 0%, var(--admin-surface) 100%);
  padding: 0.875rem 1.125rem;
  font-size: 0.875rem;
  color: var(--admin-blue-dark);
}

.admin-banner strong {
  font-weight: 700;
  color: var(--admin-text);
}

.admin-kpi-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(1, minmax(0, 1fr));
}

@media (min-width: 640px) {
  .admin-kpi-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1280px) {
  .admin-kpi-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

.admin-kpi-card {
  padding: 1.125rem 1.25rem;
}

.admin-kpi-card--accent-blue {
  border-color: color-mix(in srgb, var(--admin-blue) 22%, transparent);
  background: linear-gradient(180deg, var(--admin-surface) 0%, var(--admin-blue-muted) 100%);
}

.admin-kpi-card--accent-red {
  border-color: color-mix(in srgb, var(--admin-red) 22%, transparent);
  background: linear-gradient(180deg, var(--admin-surface) 0%, var(--admin-red-light) 100%);
}

.admin-kpi-label {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--admin-text-faint);
}

.admin-kpi-value {
  margin-top: 0.375rem;
  font-size: 1.625rem;
  font-weight: 800;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
  color: var(--admin-text);
}

.admin-chart-grid {
  display: grid;
  gap: 1.25rem;
  margin-top: 1.75rem;
}

@media (min-width: 1024px) {
  .admin-chart-grid {
    grid-template-columns: 1.4fr 1fr;
  }
}

.admin-card-header {
  padding: 1.125rem 1.25rem 0;
}

.admin-card-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--admin-text);
}

.admin-card-sub {
  margin-top: 0.25rem;
  font-size: 0.75rem;
  color: var(--admin-text-faint);
}

.admin-card-body {
  padding: 1rem 1.25rem 1.25rem;
}

.admin-chart-wrap {
  height: 16rem;
}

.admin-plan-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.admin-plan-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  border-radius: var(--admin-radius);
  background: var(--admin-bg);
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
}

.admin-plan-row strong {
  text-transform: capitalize;
  color: var(--admin-text);
}

.admin-plan-row span {
  font-variant-numeric: tabular-nums;
  color: var(--admin-text-muted);
}

.admin-plan-bar-wrap {
  margin-top: 0.75rem;
}

.admin-plan-bar-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--admin-text-muted);
}

.admin-plan-bar {
  margin-top: 0.375rem;
  height: 0.375rem;
  overflow: hidden;
  border-radius: 9999px;
  background: var(--admin-border-light);
}

.admin-plan-bar-fill {
  height: 100%;
  border-radius: 9999px;
  background: linear-gradient(90deg, var(--admin-blue) 0%, var(--admin-blue-dark) 100%);
}

.admin-plan-bar-fill--alt {
  background: linear-gradient(90deg, var(--admin-red) 0%, var(--admin-red-dark) 100%);
}

.admin-tip-card {
  margin-top: 1.75rem;
  border: 1px dashed var(--admin-border);
  border-radius: var(--admin-radius-lg);
  background: color-mix(in srgb, var(--admin-bg) 80%, var(--admin-surface));
  padding: 1.125rem 1.25rem;
  font-size: 0.875rem;
  color: var(--admin-text-muted);
}

.admin-tip-card strong {
  color: var(--admin-text);
}

.admin-tip-card code {
  border-radius: 0.25rem;
  background: var(--admin-surface);
  padding: 0.125rem 0.375rem;
  font-size: 0.75rem;
  color: var(--admin-blue-dark);
}

/* Tables (payments, students, events, reference) */
.admin-main .overflow-hidden.rounded-2xl,
.admin-main .overflow-x-auto.rounded-2xl {
  border: 1px solid var(--admin-border-light);
  border-radius: var(--admin-radius-lg);
  background: var(--admin-surface);
  box-shadow: var(--admin-shadow);
}

.admin-main table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.admin-main thead {
  background: var(--admin-bg);
  text-align: left;
}

.admin-main thead th {
  padding: 0.75rem 1rem;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--admin-text-faint);
}

.admin-main tbody tr {
  border-top: 1px solid var(--admin-border-light);
  transition: background 0.12s ease;
}

.admin-main tbody tr:hover {
  background: var(--admin-blue-muted);
}

.admin-main tbody td {
  padding: 0.75rem 1rem;
  color: var(--admin-text-secondary);
}

.admin-main .mb-4.rounded-xl.border {
  border-color: var(--admin-border-light);
  background: var(--admin-blue-muted);
  color: var(--admin-blue-dark);
}

/* ── Responsive ── */
.admin-app {
  min-height: 100vh;
  min-height: 100dvh;
}

.admin-app-inner {
  min-height: 100vh;
  min-height: 100dvh;
}

@media (max-width: 767px) {
  .admin-main {
    padding: 1rem;
  }

  .admin-header-title {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 1rem;
  }

  .admin-header-actions {
    flex-shrink: 0;
  }

  .admin-kpi-grid {
    grid-template-columns: 1fr;
  }

  .admin-period-bar {
    gap: 0.375rem;
  }

  .admin-period-pill {
    padding: 0.3125rem 0.625rem;
    font-size: 0.75rem;
  }
}

@media (min-width: 480px) and (max-width: 767px) {
  .admin-kpi-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.admin-main .overflow-x-auto.rounded-2xl table,
.admin-main .overflow-hidden.rounded-2xl table {
  min-width: 40rem;
}

.admin-main .overflow-x-auto.rounded-2xl,
.admin-main .overflow-hidden.rounded-2xl {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

@media (max-width: 639px) {
  .admin-main thead th,
  .admin-main tbody td {
    padding: 0.625rem 0.75rem;
    font-size: 0.8125rem;
  }

  .admin-nav-mobile .admin-nav-link {
    font-size: 0.75rem;
    padding: 0.4375rem 0.625rem;
  }
}