/* ============================================================
   PREMIUM SCHOOL ADMIN DASHBOARD STYLESHEET
   ============================================================ */

:root {
  --adm-bg: #f4f6f9;
  --adm-panel: #ffffff;
  --adm-sidebar-bg: #0d1527;
  --adm-sidebar-hover: #17233f;
  --adm-sidebar-active: #1e2e54;
  --adm-sidebar-border: rgba(255, 255, 255, 0.08);
  
  --adm-ink: #1e293b;
  --adm-ink-heading: #0f172a;
  --adm-muted: #64748b;
  --adm-line: #e2e8f0;
  --adm-line-subtle: #f1f5f9;
  
  --adm-primary: #0f286f;
  --adm-primary-hover: #0a1c50;
  --adm-primary-light: #e0e7ff;
  
  --adm-brand: #059669;
  --adm-brand-hover: #047857;
  --adm-brand-light: #d1fae5;
  
  --adm-accent: #e11d48;
  --adm-accent-hover: #be123c;
  --adm-accent-light: #ffe4e6;
  
  --adm-info: #0284c7;
  --adm-info-light: #e0f2fe;
  
  --adm-warn: #d97706;
  --adm-warn-light: #fef3c7;
  
  --adm-danger: #dc2626;
  --adm-danger-light: #fee2e2;

  --adm-radius: 10px;
  --adm-radius-sm: 6px;
  --adm-radius-lg: 14px;
  
  --adm-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --adm-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --adm-shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --adm-shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
  
  --adm-transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  background-color: var(--adm-bg);
  color: var(--adm-ink);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  font-size: 14.5px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--adm-primary);
  text-decoration: none;
  transition: var(--adm-transition);
}

a:hover {
  color: var(--adm-primary-hover);
}

/* --- Layout Grid --- */
.app {
  display: grid;
  grid-template-columns: 270px 1fr;
  min-height: 100vh;
}

/* --- Sidebar --- */
.sidebar {
  background: var(--adm-sidebar-bg);
  color: #f8fafc;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--adm-sidebar-border);
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  z-index: 50;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.2) transparent;
}

.sidebar-header {
  padding: 24px 20px 20px;
  border-bottom: 1px solid var(--adm-sidebar-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.3px;
  color: #ffffff;
}

.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: 9px;
  background: linear-gradient(135deg, #e11d48, #0f286f);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  box-shadow: 0 4px 12px rgba(225, 29, 72, 0.35);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-text span.school-title {
  font-size: 15px;
  font-weight: 800;
  line-height: 1.2;
  color: #ffffff;
}

.brand-text span.admin-sub {
  font-size: 11px;
  font-weight: 500;
  color: #94a3b8;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.nav {
  padding: 16px 12px 28px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #64748b;
  margin: 20px 10px 8px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--adm-radius-sm);
  color: #cbd5e1;
  font-size: 13.5px;
  font-weight: 500;
  transition: var(--adm-transition);
  position: relative;
}

.nav-link i {
  font-size: 17px;
  width: 20px;
  text-align: center;
  color: #94a3b8;
  transition: var(--adm-transition);
}

.nav-link:hover {
  background: var(--adm-sidebar-hover);
  color: #ffffff;
}

.nav-link:hover i {
  color: #38bdf8;
}

.nav-link.active {
  background: linear-gradient(90deg, rgba(15, 40, 111, 0.8), rgba(225, 29, 72, 0.4));
  color: #ffffff;
  font-weight: 600;
  border-left: 3px solid #e11d48;
}

.nav-link.active i {
  color: #ffffff;
}

.nav-link .badge-counter {
  margin-left: auto;
  font-size: 11px;
  padding: 2px 7px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
}

/* --- Main Area & Topbar --- */
.main {
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.topbar {
  height: 68px;
  background: var(--adm-panel);
  border-bottom: 1px solid var(--adm-line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  position: sticky;
  top: 0;
  z-index: 40;
  box-shadow: var(--adm-shadow-sm);
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.mobile-nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--adm-line);
  padding: 6px 10px;
  border-radius: var(--adm-radius-sm);
  font-size: 18px;
  cursor: pointer;
  color: var(--adm-ink);
}

.topbar-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--adm-ink-heading);
  display: flex;
  align-items: center;
  gap: 8px;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.user-profile-pill {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 5px 12px 5px 6px;
  background: var(--adm-bg);
  border: 1px solid var(--adm-line);
  border-radius: 999px;
  font-size: 13.5px;
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--adm-primary);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 13px;
}

.content {
  padding: 32px;
  flex: 1;
}

/* --- Page Headings --- */
.page-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.page-head-text h1 {
  font-size: 24px;
  font-weight: 800;
  color: var(--adm-ink-heading);
  margin: 0 0 4px;
  letter-spacing: -0.3px;
}

.page-head-text p {
  margin: 0;
  color: var(--adm-muted);
  font-size: 13.5px;
}

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

/* --- Cards & Panels --- */
.card {
  background: var(--adm-panel);
  border: 1px solid var(--adm-line);
  border-radius: var(--adm-radius);
  box-shadow: var(--adm-shadow-sm);
  padding: 24px;
  transition: var(--adm-transition);
  position: relative;
}

.card:hover {
  box-shadow: var(--adm-shadow);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--adm-line-subtle);
}

.card-header h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--adm-ink-heading);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* --- Stat Cards (Dashboard) --- */
.grid {
  display: grid;
  gap: 20px;
}

.stats-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.stat-card {
  background: var(--adm-panel);
  border: 1px solid var(--adm-line);
  border-radius: var(--adm-radius);
  padding: 22px;
  box-shadow: var(--adm-shadow-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  position: relative;
  overflow: hidden;
}

.stat-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--adm-shadow-md);
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--adm-primary);
}

.stat-card.emerald::before { background: var(--adm-brand); }
.stat-card.crimson::before { background: var(--adm-accent); }
.stat-card.amber::before { background: var(--adm-warn); }
.stat-card.sky::before { background: var(--adm-info); }

.stat-info span.stat-label {
  display: block;
  font-size: 12.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--adm-muted);
  margin-bottom: 4px;
}

.stat-info strong.stat-count {
  display: block;
  font-size: 30px;
  font-weight: 800;
  color: var(--adm-ink-heading);
  line-height: 1.1;
}

.stat-icon-wrap {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: var(--adm-primary-light);
  color: var(--adm-primary);
  display: grid;
  place-items: center;
  font-size: 24px;
}

.stat-card.emerald .stat-icon-wrap { background: var(--adm-brand-light); color: var(--adm-brand); }
.stat-card.crimson .stat-icon-wrap { background: var(--adm-accent-light); color: var(--adm-accent); }
.stat-card.amber .stat-icon-wrap { background: var(--adm-warn-light); color: var(--adm-warn); }
.stat-card.sky .stat-icon-wrap { background: var(--adm-info-light); color: var(--adm-info); }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--adm-line);
  background: #ffffff;
  color: var(--adm-ink);
  border-radius: var(--adm-radius-sm);
  padding: 9px 16px;
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--adm-transition);
  text-decoration: none;
  line-height: 1;
}

.btn i {
  font-size: 15px;
}

.btn:hover {
  background: #f8fafc;
  border-color: #cbd5e1;
  color: var(--adm-ink-heading);
}

.btn.primary {
  background: var(--adm-primary);
  border-color: var(--adm-primary);
  color: #ffffff;
  box-shadow: 0 2px 6px rgba(15, 40, 111, 0.25);
}

.btn.primary:hover {
  background: var(--adm-primary-hover);
  border-color: var(--adm-primary-hover);
  box-shadow: 0 4px 10px rgba(15, 40, 111, 0.35);
}

.btn.brand {
  background: var(--adm-brand);
  border-color: var(--adm-brand);
  color: #ffffff;
}

.btn.brand:hover {
  background: var(--adm-brand-hover);
}

.btn.danger {
  background: var(--adm-danger);
  border-color: var(--adm-danger);
  color: #ffffff;
}

.btn.danger:hover {
  background: #b91c1c;
  border-color: #b91c1c;
}

.btn.small {
  padding: 6px 11px;
  font-size: 12.5px;
  border-radius: 5px;
  gap: 5px;
}

.btn.small i {
  font-size: 13px;
}

.btn-icon {
  width: 32px;
  height: 32px;
  padding: 0;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* --- Status Badges --- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  border-radius: 999px;
  padding: 3px 10px;
  font-size: 12px;
  font-weight: 600;
  background: #e2e8f0;
  color: #334155;
  line-height: 1.2;
}

.badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.badge.active,
.badge.published,
.badge.enrolled {
  background: var(--adm-brand-light);
  color: #065f46;
}

.badge.inactive,
.badge.draft,
.badge.rejected {
  background: var(--adm-danger-light);
  color: #991b1b;
}

.badge.new,
.badge.pending {
  background: var(--adm-info-light);
  color: #0369a1;
}

.badge.contacted,
.badge.in_progress {
  background: var(--adm-warn-light);
  color: #92400e;
}

/* --- Form Controls & Form Design --- */
.form-card {
  background: #ffffff;
  border: 1px solid var(--adm-line);
  border-radius: var(--adm-radius);
  box-shadow: var(--adm-shadow-sm);
  padding: 28px;
}

.form-section-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--adm-ink-heading);
  margin: 0 0 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--adm-line-subtle);
  display: flex;
  align-items: center;
  gap: 8px;
}

.form-section-title i {
  color: var(--adm-primary);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

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

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

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

label {
  font-weight: 600;
  font-size: 13.5px;
  color: var(--adm-ink-heading);
  display: flex;
  align-items: center;
  gap: 4px;
}

label span.req {
  color: var(--adm-accent);
}

label span.opt {
  font-weight: 400;
  color: var(--adm-muted);
  font-size: 12px;
  margin-left: 4px;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="tel"],
input[type="url"],
input[type="date"],
input[type="datetime-local"],
select,
textarea {
  width: 100%;
  border: 1px solid var(--adm-line);
  border-radius: var(--adm-radius-sm);
  padding: 10px 14px;
  font-family: inherit;
  font-size: 14px;
  color: var(--adm-ink-heading);
  background: #ffffff;
  transition: var(--adm-transition);
  outline: none;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--adm-primary);
  box-shadow: 0 0 0 3px rgba(15, 40, 111, 0.12);
}

textarea {
  min-height: 120px;
  resize: vertical;
}

.field-help {
  font-size: 12px;
  color: var(--adm-muted);
  margin-top: 2px;
}

/* --- File Upload Area --- */
.file-upload-box {
  border: 2px dashed var(--adm-line);
  border-radius: var(--adm-radius-sm);
  padding: 18px 20px;
  background: #fbfcfe;
  text-align: center;
  transition: var(--adm-transition);
  position: relative;
}

.file-upload-box:hover {
  border-color: var(--adm-primary);
  background: #f8faff;
}

.file-upload-box input[type="file"] {
  display: block;
  width: 100%;
  font-size: 13px;
  color: var(--adm-muted);
  cursor: pointer;
}

.upload-preview-card {
  margin-top: 12px;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 14px;
  background: #f8fafc;
  border: 1px solid var(--adm-line);
  border-radius: var(--adm-radius-sm);
}

.upload-preview-card img.thumb {
  width: 68px;
  height: 68px;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--adm-line);
  background: #fff;
}

/* --- Tables & DataTables Styling --- */
.table-wrap,
.dataTables_wrapper {
  background: #ffffff;
  border: 1px solid var(--adm-line);
  border-radius: var(--adm-radius);
  box-shadow: var(--adm-shadow-sm);
  overflow: hidden;
  padding: 20px;
  margin-top: 14px;
}

table.dataTable,
table {
  width: 100% !important;
  border-collapse: separate;
  border-spacing: 0;
  color: var(--adm-ink);
  font-size: 13.5px;
}

table thead th {
  background: #f8fafc;
  color: #475569;
  font-weight: 700;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 14px 16px;
  border-bottom: 2px solid var(--adm-line);
  border-top: none;
  white-space: nowrap;
  vertical-align: middle;
}

table tbody td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--adm-line-subtle);
  vertical-align: middle;
  background: #ffffff;
  transition: background 0.15s ease;
}

table tbody tr:hover td {
  background-color: #f8fafc;
}

table tbody tr:last-child td {
  border-bottom: none;
}

/* DataTables Toolbars & Controls */
.dataTables_wrapper .dataTables_length,
.dataTables_wrapper .dataTables_filter {
  margin-bottom: 16px;
  color: var(--adm-muted);
  font-size: 13.5px;
}

.dataTables_wrapper .dataTables_filter input {
  margin-left: 8px;
  padding: 7px 12px;
  border: 1px solid var(--adm-line);
  border-radius: var(--adm-radius-sm);
  outline: none;
  font-size: 13.5px;
}

.dataTables_wrapper .dataTables_filter input:focus {
  border-color: var(--adm-primary);
  box-shadow: 0 0 0 3px rgba(15, 40, 111, 0.1);
}

.dataTables_wrapper .dataTables_length select {
  padding: 6px 10px;
  border: 1px solid var(--adm-line);
  border-radius: var(--adm-radius-sm);
  margin: 0 6px;
  outline: none;
}

.dataTables_wrapper .dataTables_info {
  padding-top: 16px;
  color: var(--adm-muted);
  font-size: 13px;
}

.dataTables_wrapper .dataTables_paginate {
  padding-top: 14px;
  display: flex;
  gap: 4px;
  align-items: center;
  justify-content: flex-end;
}

.dataTables_wrapper .dataTables_paginate .paginate_button {
  padding: 6px 12px !important;
  border: 1px solid var(--adm-line) !important;
  border-radius: var(--adm-radius-sm) !important;
  background: #ffffff !important;
  color: var(--adm-ink) !important;
  font-size: 13px !important;
  font-weight: 600 !important;
  cursor: pointer;
  transition: var(--adm-transition);
}

.dataTables_wrapper .dataTables_paginate .paginate_button:hover {
  background: #f1f5f9 !important;
  border-color: #cbd5e1 !important;
  color: var(--adm-ink-heading) !important;
}

.dataTables_wrapper .dataTables_paginate .paginate_button.current,
.dataTables_wrapper .dataTables_paginate .paginate_button.current:hover {
  background: var(--adm-primary) !important;
  border-color: var(--adm-primary) !important;
  color: #ffffff !important;
}

.dataTables_wrapper .dataTables_paginate .paginate_button.disabled,
.dataTables_wrapper .dataTables_paginate .paginate_button.disabled:hover {
  opacity: 0.5;
  cursor: not-allowed;
  background: #fff !important;
  border-color: var(--adm-line) !important;
  color: var(--adm-muted) !important;
}

/* Toolbar filters for server-side index pages */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  background: #ffffff;
  padding: 16px 20px;
  border: 1px solid var(--adm-line);
  border-radius: var(--adm-radius);
  margin-bottom: 20px;
  box-shadow: var(--adm-shadow-sm);
}

.toolbar input,
.toolbar select {
  max-width: 240px;
}

.toolbar button {
  white-space: nowrap;
}

/* Action buttons in tables */
.actions {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: nowrap;
}

/* Alerts */
.alert {
  border-radius: var(--adm-radius-sm);
  padding: 14px 18px;
  margin-bottom: 20px;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: var(--adm-shadow-sm);
}

.alert i {
  font-size: 18px;
}

.alert.success {
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  color: #065f46;
}

.alert.error {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #991b1b;
}

.alert.info {
  background: #f0f9ff;
  border: 1px solid #bae6fd;
  color: #075985;
}

/* --- Auth / Login Page --- */
.auth-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  background: radial-gradient(circle at top, #1e2e54 0%, #0d1527 100%);
}

.auth-card {
  width: min(440px, 100%);
  background: #ffffff;
  border-radius: var(--adm-radius-lg);
  padding: 36px 32px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.35);
}

.auth-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 24px;
}

.auth-card h1 {
  font-size: 22px;
  font-weight: 800;
  color: var(--adm-ink-heading);
  margin: 0 0 6px;
  text-align: center;
}

.auth-card p {
  margin: 0 0 26px;
  color: var(--adm-muted);
  text-align: center;
  font-size: 14px;
}

/* --- Responsive Adjustments --- */
@media (max-width: 991.98px) {
  .app {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: fixed;
    top: 0;
    left: -280px;
    width: 270px;
    height: 100vh;
    transition: left 0.3s ease;
    box-shadow: 0 0 25px rgba(0, 0, 0, 0.4);
  }

  .sidebar.show {
    left: 0;
  }

  .mobile-nav-toggle {
    display: inline-flex;
  }

  .content {
    padding: 20px;
  }

  .topbar {
    padding: 0 20px;
  }

  .form-grid,
  .form-grid.three-col {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 575.98px) {
  .page-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .toolbar input,
  .toolbar select,
  .toolbar button {
    max-width: 100%;
    width: 100%;
  }
}