/* ============================================================
   VISAKHAA VALLEY SCHOOL – Premium Design System
   Custom Vanilla CSS — No Tailwind/Bootstrap
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Outfit:wght@400;500;600;700;800&display=swap');

/* ── CSS Variables ── */
:root {
  /* Primary Palette */
  --primary: #4f46e5;
  --primary-dark: #3730a3;
  --primary-light: #818cf8;
  --primary-50: #eef2ff;
  --primary-100: #e0e7ff;

  /* Secondary / Accent */
  --accent: #f59e0b;
  --accent-dark: #d97706;
  --accent-light: #fcd34d;

  /* Semantic */
  --success: #10b981;
  --success-light: #d1fae5;
  --danger: #ef4444;
  --danger-light: #fee2e2;
  --warning: #f59e0b;
  --warning-light: #fef3c7;
  --info: #06b6d4;
  --info-light: #cffafe;

  /* Neutrals */
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;

  /* Layout */
  --sidebar-width: 260px;
  --sidebar-collapsed: 70px;
  --topbar-height: 64px;
  --border-radius: 12px;
  --border-radius-sm: 8px;
  --border-radius-lg: 16px;
  --border-radius-xl: 24px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 24px 64px rgba(0, 0, 0, 0.16);

  /* Typography */
  --font-body: 'Inter', system-ui, sans-serif;
  --font-display: 'Outfit', system-ui, sans-serif;

  /* Transitions */
  --transition: all 0.2s ease;
  --transition-slow: all 0.35s ease;
}

/* ── Reset ── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--gray-800);
  background: var(--gray-50);
  line-height: 1.6;
}

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

img {
  max-width: 100%;
  display: block;
}

button {
  cursor: pointer;
  font-family: inherit;
}

input,
select,
textarea {
  font-family: inherit;
}

/* ── App Layout ── */
.app-wrapper {
  display: flex;
  min-height: 100vh;
}

/* ── Sidebar ── */
.sidebar {
  width: var(--sidebar-width);
  min-height: 100vh;
  background: linear-gradient(160deg, #1e1b4b 0%, #312e81 40%, #4338ca 100%);
  display: flex;
  flex-direction: column;
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  z-index: 100;
  transition: var(--transition-slow);
  overflow: hidden;
}

.sidebar-header {
  padding: 24px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  gap: 12px;
}

.sidebar-logo {
  width: 100%;
  max-width: 220px;
  height: 60px;
  background: white;
  border-radius: 8px;
  padding: 6px 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.sidebar-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.sidebar-brand {
  overflow: hidden;
}

.sidebar-brand h1 {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
  white-space: nowrap;
}

.sidebar-brand span {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.55);
  white-space: nowrap;
}

.sidebar-nav {
  flex: 1;
  padding: 16px 0;
  overflow-y: auto;
  overflow-x: hidden;
}

.sidebar-nav::-webkit-scrollbar {
  width: 4px;
}

.sidebar-nav::-webkit-scrollbar-track {
  background: transparent;
}

.sidebar-nav::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 2px;
}

.nav-section-title {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.35);
  text-transform: uppercase;
  padding: 16px 24px 6px;
  white-space: nowrap;
}

.nav-item {
  margin: 1px 12px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--border-radius-sm);
  color: rgba(255, 255, 255, 0.7);
  font-size: 13.5px;
  font-weight: 500;
  transition: var(--transition);
  white-space: nowrap;
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  transform: translateX(2px);
}

.nav-link.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 20px;
  background: var(--accent);
  border-radius: 0 2px 2px 0;
}

.nav-link .nav-icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 16px;
}

.nav-badge {
  margin-left: auto;
  background: var(--danger);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 10px;
  line-height: 1;
}

.sidebar-footer {
  padding: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: var(--transition);
}

.sidebar-user:hover {
  background: rgba(255, 255, 255, 0.08);
}

.avatar-sm {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid rgba(255, 255, 255, 0.2);
}

.sidebar-user-info {
  overflow: hidden;
}

.sidebar-user-info .name {
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-user-info .role {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.5);
  text-transform: capitalize;
}

/* ── Main Content ── */
.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: var(--transition-slow);
}

/* ── Topbar ── */
.topbar {
  height: var(--topbar-height);
  background: #fff;
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  padding: 0 28px;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: var(--shadow-sm);
}

.topbar-breadcrumb {
  flex: 1;
}

.topbar-breadcrumb h2 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--gray-900);
}

.topbar-breadcrumb .breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--gray-400);
  margin-top: 2px;
}

.topbar-breadcrumb .breadcrumb a {
  color: var(--gray-400);
}

.topbar-breadcrumb .breadcrumb a:hover {
  color: var(--primary);
}

.topbar-breadcrumb .breadcrumb .sep {
  color: var(--gray-300);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.icon-btn {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--gray-200);
  background: #fff;
  color: var(--gray-500);
  transition: var(--transition);
  position: relative;
}

.icon-btn:hover {
  background: var(--gray-50);
  border-color: var(--gray-300);
  color: var(--primary);
}

.icon-btn .badge {
  position: absolute;
  top: -4px;
  right: -4px;
  background: var(--danger);
  color: #fff;
  font-size: 9px;
  font-weight: 700;
  padding: 2px 5px;
  border-radius: 8px;
}

.topbar-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--primary-100);
  cursor: pointer;
}

/* ── Page Content ── */
.page-content {
  flex: 1;
  padding: 28px;
}

/* ── Alerts / Flash ── */
.alert {
  padding: 14px 18px;
  border-radius: var(--border-radius-sm);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 500;
}

.alert-success {
  background: var(--success-light);
  color: #065f46;
  border-left: 4px solid var(--success);
}

.alert-danger {
  background: var(--danger-light);
  color: #991b1b;
  border-left: 4px solid var(--danger);
}

.alert-warning {
  background: var(--warning-light);
  color: #92400e;
  border-left: 4px solid var(--warning);
}

.alert-info {
  background: var(--info-light);
  color: #0e7490;
  border-left: 4px solid var(--info);
}

/* ── Cards ── */
.card {
  background: #fff;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-100);
  overflow: visible;
}

.card-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-header h3 {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--gray-900);
}

.card-body {
  padding: 24px;
}

.card-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--gray-100);
  background: var(--gray-50);
}

/* ── Stat Cards ── */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-bottom: 28px;
}

.stat-card {
  background: #fff;
  border-radius: var(--border-radius);
  padding: 22px;
  border: 1px solid var(--gray-100);
  box-shadow: var(--shadow);
  transition: var(--transition);
  display: flex;
  align-items: flex-start;
  gap: 16px;
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 80px;
  height: 80px;
  background: radial-gradient(circle, rgba(79, 70, 229, 0.06) 0%, transparent 70%);
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.stat-icon.blue {
  background: var(--primary-50);
}

.stat-icon.green {
  background: #ecfdf5;
}

.stat-icon.amber {
  background: #fffbeb;
}

.stat-icon.red {
  background: #fef2f2;
}

.stat-icon.cyan {
  background: #ecfeff;
}

.stat-icon.purple {
  background: #faf5ff;
}

.stat-info .label {
  font-size: 12px;
  color: var(--gray-400);
  font-weight: 500;
  letter-spacing: 0.02em;
}

.stat-info .value {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 800;
  color: var(--gray-900);
  line-height: 1.1;
}

.stat-info .change {
  font-size: 12px;
  font-weight: 500;
  margin-top: 2px;
}

.stat-info .change.up {
  color: var(--success);
}

.stat-info .change.down {
  color: var(--danger);
}

/* ── Table ── */
.table-container {
  overflow-x: auto;
  border-radius: var(--border-radius);
}

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

.data-table thead tr {
  background: var(--gray-50);
  border-bottom: 2px solid var(--gray-200);
}

.data-table th {
  padding: 12px 16px;
  text-align: left;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gray-500);
  white-space: nowrap;
}

.data-table tbody tr {
  border-bottom: 1px solid var(--gray-100);
  transition: var(--transition);
}

.data-table tbody tr:hover {
  background: var(--gray-50);
}

.data-table td {
  padding: 13px 16px;
  font-size: 14px;
  color: var(--gray-700);
}

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

/* ── Student Avatar Row ── */
.student-avatar {
  display: flex;
  align-items: center;
  gap: 10px;
}

.student-avatar img {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
}

.student-avatar .info .name {
  font-weight: 600;
  color: var(--gray-900);
  font-size: 14px;
}

.student-avatar .info .sub {
  font-size: 12px;
  color: var(--gray-400);
}

/* ── Badges ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

.badge-success {
  background: var(--success-light);
  color: #065f46;
}

.badge-danger {
  background: var(--danger-light);
  color: #991b1b;
}

.badge-warning {
  background: var(--warning-light);
  color: #92400e;
}

.badge-info {
  background: var(--info-light);
  color: #0e7490;
}

.badge-primary {
  background: var(--primary-100);
  color: var(--primary-dark);
}

.badge-gray {
  background: var(--gray-100);
  color: var(--gray-600);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: var(--border-radius-sm);
  font-size: 13.5px;
  font-weight: 600;
  border: none;
  transition: var(--transition);
  cursor: pointer;
  white-space: nowrap;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.35);
}

.btn-secondary {
  background: var(--gray-100);
  color: var(--gray-700);
}

.btn-secondary:hover {
  background: var(--gray-200);
}

.btn-success {
  background: var(--success);
  color: #fff;
}

.btn-success:hover {
  background: #059669;
}

.btn-danger {
  background: var(--danger);
  color: #fff;
}

.btn-danger:hover {
  background: #dc2626;
}

.btn-warning {
  background: var(--warning);
  color: #fff;
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--gray-300);
  color: var(--gray-700);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-50);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12.5px;
  border-radius: 6px;
}

.btn-lg {
  padding: 12px 24px;
  font-size: 15px;
}

.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: var(--border-radius-sm);
}

.btn[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ── Forms ── */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 6px;
}

.form-label .required {
  color: var(--danger);
  margin-left: 2px;
}

.form-control {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--border-radius-sm);
  background: #fff;
  color: var(--gray-800);
  font-size: 14px;
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12);
}

.form-control.is-invalid {
  border-color: var(--danger);
}

.form-control::placeholder {
  color: var(--gray-300);
}

.form-text {
  font-size: 12px;
  color: var(--gray-400);
  margin-top: 4px;
}

.invalid-feedback {
  font-size: 12px;
  color: var(--danger);
  margin-top: 4px;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
}

.form-row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-row-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px;
}

/* ── Section Header ── */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.section-header h2 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--gray-900);
}

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

.section-header .actions {
  gap: 10px;
}

/* ── Search Bar ── */
.search-box {
  display: flex;
  align-items: center;
  gap: 0;
  background: #fff;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--border-radius-sm);
  overflow: hidden;
  transition: var(--transition);
}

.search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.10);
}

.search-box .search-icon {
  padding: 0 12px;
  color: var(--gray-400);
}

.search-box input {
  flex: 1;
  padding: 9px 12px 9px 0;
  border: none;
  outline: none;
  font-size: 14px;
  background: transparent;
}

/* ── Pagination ── */
.pagination-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  border-top: 1px solid var(--gray-100);
}

.pagination-info {
  font-size: 13px;
  color: var(--gray-400);
}

.pagination {
  display: flex;
  align-items: center;
  gap: 4px;
}

.page-link {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-600);
  border: 1px solid transparent;
  transition: var(--transition);
}

.page-link:hover {
  background: var(--gray-100);
}

.page-link.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* ── Modal ── */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}

.modal-backdrop.show {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: #fff;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 540px;
  transform: translateY(20px);
  transition: var(--transition);
  max-height: 90vh;
  overflow-y: auto;
}

.modal-backdrop.show .modal {
  transform: translateY(0);
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
}

.modal-close {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  border: none;
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--gray-500);
  transition: var(--transition);
}

.modal-close:hover {
  background: var(--gray-200);
  color: var(--danger);
}

.modal-body {
  padding: 24px;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}

/* ── Empty State ── */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--gray-400);
}

.empty-state .icon {
  font-size: 48px;
  margin-bottom: 16px;
  opacity: 0.5;
}

.empty-state h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--gray-600);
  margin-bottom: 8px;
}

.empty-state p {
  font-size: 14px;
  margin-bottom: 20px;
}

/* ── Attendance Marking ── */
.attendance-control {
  display: flex;
  background: var(--gray-100);
  padding: 4px;
  border-radius: 12px;
  gap: 4px;
  width: fit-content;
  margin: 0 auto;
}

.attendance-btn {
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  align-items: center;
  gap: 6px;
  border: 1px solid transparent;
  color: var(--gray-500);
  background: transparent;
  min-width: 60px;
  justify-content: center;
}

.attendance-btn:hover {
  background: rgba(255, 255, 255, 0.5);
  color: var(--gray-700);
}

.attendance-btn.P.active {
  background: #fff;
  color: #10b981;
  box-shadow: var(--shadow-sm);
  border-color: rgba(16, 185, 129, 0.2);
}

.attendance-btn.A.active {
  background: #fff;
  color: #ef4444;
  box-shadow: var(--shadow-sm);
  border-color: rgba(239, 68, 68, 0.2);
}

.attendance-btn.L.active {
  background: #fff;
  color: #f59e0b;
  box-shadow: var(--shadow-sm);
  border-color: rgba(245, 158, 11, 0.2);
}

.attendance-btn .icon {
  font-size: 14px;
}

/* ── Auth Page ── */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: linear-gradient(135deg, #1e1b4b 0%, #4338ca 40%, #7c3aed 70%, #c026d3 100%);
  position: relative;
  overflow: hidden;
}

.auth-page::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='80' height='80' viewBox='0 0 80 80' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M50 50c0-5.523 4.477-10 10-10s10 4.477 10 10-4.477 10-10 10c0 5.523-4.477 10-10 10s-10-4.477-10-10 4.477-10 10-10zM10 10c0-5.523 4.477-10 10-10s10 4.477 10 10-4.477 10-10 10c0 5.523-4.477 10-10 10S0 25.523 0 20s4.477-10 10-10z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.auth-container {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 440px;
}

.auth-card {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border-radius: var(--border-radius-xl);
  padding: 44px;
  box-shadow: 0 32px 80px rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.8);
}

.auth-logo {
  text-align: center;
  margin-bottom: 32px;
}

.auth-logo img {
  height: auto;
  max-height: 100px;
  width: 100%;
  max-width: 360px;
  margin: 0 auto;
  object-fit: contain;
  background: white;
  padding: 16px 24px;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.auth-logo h1 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  color: var(--gray-900);
  line-height: 1.2;
}

.auth-logo p {
  font-size: 13px;
  color: var(--gray-500);
  margin-top: 4px;
}

.auth-btn {
  width: 100%;
  padding: 13px;
  border-radius: var(--border-radius-sm);
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  margin-top: 8px;
}

.auth-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(79, 70, 229, 0.4);
}

/* ── Scrollbar ── */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
  background: var(--gray-300);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--gray-400);
}

/* ── Dashboard Chart area ── */
.chart-container {
  background: #fff;
  border-radius: var(--border-radius);
  padding: 24px;
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-100);
}

/* ── Timetable Grid ── */
.timetable-grid {
  display: grid;
  grid-template-columns: auto repeat(6, 1fr);
  gap: 1px;
  background: var(--gray-200);
  border-radius: var(--border-radius);
  overflow: hidden;
}

.timetable-cell {
  background: #fff;
  padding: 10px;
  min-height: 56px;
}

.timetable-header {
  background: var(--gray-50);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--gray-500);
}

.timetable-subject {
  background: var(--primary-50);
  border-radius: 6px;
  padding: 6px 8px;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 2px;
}

.timetable-teacher {
  font-size: 11px;
  color: var(--gray-400);
}

/* ── Report Card ── */
.report-card-print {
  max-width: 800px;
  margin: 0 auto;
}

/* ── Upload Zone ── */
.upload-zone {
  border: 2px dashed var(--gray-300);
  border-radius: var(--border-radius);
  padding: 40px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  background: var(--gray-50);
}

.upload-zone:hover {
  border-color: var(--primary);
  background: var(--primary-50);
}

.upload-zone.drag-over {
  border-color: var(--primary);
  background: var(--primary-50);
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .main-content {
    margin-left: 0;
  }
}

@media (max-width: 768px) {
  .page-content {
    padding: 16px;
  }

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

  .form-row-2,
  .form-row-3 {
    grid-template-columns: 1fr;
  }

  .auth-card {
    padding: 28px 20px;
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
}

@media print {

  .sidebar,
  .topbar,
  .btn,
  .pagination-wrap,
  .actions {
    display: none !important;
  }

  .main-content {
    margin: 0 !important;
  }

  .page-content {
    padding: 0 !important;
  }
}

/* ── Animations ── */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.5;
  }
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

.animate-in {
  animation: fadeInUp 0.35s ease both;
}

.skeleton {
  background: linear-gradient(90deg, var(--gray-100) 25%, var(--gray-200) 50%, var(--gray-100) 75%);
  background-size: 400% 100%;
  animation: skeleton 1.4s ease infinite;
  border-radius: 6px;
}

@keyframes skeleton {
  0% {
    background-position: 200% 0;
  }

  100% {
    background-position: -200% 0;
  }
}

/* ── Dropdown ── */
.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-menu {
  position: absolute;
  right: 0;
  top: 110%;
  background: #fff;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--gray-200);
  min-width: 180px;
  padding: 8px;
  z-index: 200;
  display: none !important;
  animation: fadeInUp 0.2s ease;
}

.dropdown-menu.show,
.show>.dropdown-menu,
.show.dropdown-menu {
  display: block !important;
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 6px;
  font-size: 13.5px;
  color: var(--gray-700);
  transition: var(--transition);
  cursor: pointer;
}

.dropdown-item:hover {
  background: var(--gray-50);
  color: var(--primary);
}

.dropdown-divider {
  height: 1px;
  background: var(--gray-100);
  margin: 6px 0;
}



/* ── Fee Status Colors ── */
.fee-paid {
  color: var(--success);
  font-weight: 600;
}

.fee-pending {
  color: var(--danger);
  font-weight: 600;
}

.fee-partial {
  color: var(--warning);
  font-weight: 600;
}

/* Quick actions */
.quick-actions {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 28px;
}

.quick-action {
  background: #fff;
  border: 1px solid var(--gray-100);
  border-radius: var(--border-radius);
  padding: 16px;
  text-align: center;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

.quick-action:hover {
  border-color: var(--primary);
  box-shadow: 0 4px 16px rgba(79, 70, 229, 0.1);
  transform: translateY(-2px);
}

.quick-action .icon {
  font-size: 24px;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
}

.quick-action span {
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-700);
}