/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:opsz,wght@14..32,300;14..32,400;14..32,500;14..32,600;14..32,700&family=Poppins:wght@400;500;600;700&display=swap');

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #4f46e5;
  --primary-dark: #4338ca;
  --primary-light: #818cf8;
  --secondary: #0f172a;
  --accent: #f59e0b;
  --bg-light: #faf0e6;        /* Light brown/beige background */
  --card-bg: #ffffff;          /* White cards for contrast */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --danger: #ef4444;
  --danger-dark: #dc2626;
  --success: #10b981;
  --warning: #f59e0b;
  --info: #3b82f6;
  --border-radius: 0.5rem;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg-light);   /* Light brown background */
  color: var(--gray-800);
  line-height: 1.5;
  overflow-x: hidden;
  max-width: 100vw;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  letter-spacing: -0.025em;
}

/* Branding: Stylized 'A' in Acadex */
.acadex-brand {
  font-family: 'Poppins', sans-serif;
  font-weight: 700;
}
.acadex-brand .acadex-a {
  font-family: 'Georgia', serif;
  font-size: 1.4em;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  display: inline-block;
  transform: rotate(-2deg) scale(1.05);
  text-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

/* ✨ FIX 1: Force Acadex brand – immune to report card overrides ✨ */
.sidebar-header .acadex-brand,
.mobile-sidebar-header .acadex-brand {
  background: none !important;
  color: white !important;
}
.sidebar-header .acadex-brand .acadex-a,
.mobile-sidebar-header .acadex-brand .acadex-a {
  background: linear-gradient(135deg, var(--primary), var(--accent)) !important;
  background-clip: text !important;
  -webkit-background-clip: text !important;
  color: transparent !important;
  display: inline-block !important;
}

/* ✨ FIX 2: School name gradient – never lost ✨ */
.school-name h1 {
  font-size: 2rem;
  background: linear-gradient(135deg, var(--primary), var(--accent)) !important;
  background-clip: text !important;
  -webkit-background-clip: text !important;
  color: transparent !important;
  display: inline-block !important;
  margin: 0;
  letter-spacing: -0.02em;
}

/* ✨ FIX 3: Mobile sidebar close button (X) – always white ✨ */
.close-sidebar {
  color: white !important;
  background: none !important;
  border: none !important;
  font-size: 1.5rem !important;
  cursor: pointer !important;
  transition: var(--transition) !important;
}
.close-sidebar:hover {
  color: white !important;
  opacity: 0.8 !important;
}

/* Dashboard Layout */
.dashboard-container {
  display: flex;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  width: 100%;
  max-width: 100%;
}

/* Desktop Sidebar */
.sidebar {
  width: 280px;
  background: var(--secondary);
  color: white;
  display: flex;
  flex-direction: column;
  position: fixed;
  height: 100vh;
  overflow-y: auto;
  z-index: 100;
  transition: var(--transition);
}

.sidebar-header {
  padding: 1.5rem;
  font-size: 1.5rem;
  font-weight: bold;
  border-bottom: 1px solid var(--gray-700);
  text-align: center;
}

.sidebar-nav {
  flex: 1;
  padding: 1rem 0;
}

.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.5rem;
  text-decoration: none;
  transition: var(--transition);
  font-weight: 500;
  border-left: 3px solid transparent;
}

/* ✨ FIX 4: Sidebar link colors – immune to report card overrides ✨ */
.sidebar-nav a,
.sidebar-nav a:link,
.sidebar-nav a:visited,
.mobile-sidebar .sidebar-nav a,
.mobile-sidebar .sidebar-nav a:link,
.mobile-sidebar .sidebar-nav a:visited {
  color: var(--gray-300) !important;
}
.sidebar-nav a:hover,
.mobile-sidebar .sidebar-nav a:hover {
  color: white !important;
  background-color: var(--gray-800) !important;
  border-left-color: var(--primary) !important;
}
.sidebar-nav a.active,
.mobile-sidebar .sidebar-nav a.active {
  color: white !important;
  background-color: var(--gray-800) !important;
  border-left-color: var(--primary) !important;
}

/* Main Content */
.main-content {
  flex: 1;
  margin-left: 280px;
  background: var(--bg-light);    /* Light brown background */
  min-height: 100vh;
  overflow-x: hidden;
  width: 100%;
  max-width: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

/* Header – two‑row layout */
.header {
  background: var(--card-bg);      /* White header */
  padding: 0.75rem 1.5rem;
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 50;
}

.school-header-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.header-right {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 1rem;
  margin-top: 0.5rem;
}

/* School logo (desktop only) */
.school-logo {
  position: relative;
  width: 56px;
  height: 56px;
  flex-shrink: 0;
  border: 3px solid var(--primary);
  border-radius: 50%;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
.logo-circle {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  background: var(--gray-200);
}
.camera-icon {
  position: absolute;
  bottom: 0;
  right: 0;
  background: var(--primary);
  border-radius: 50%;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: white;
  font-size: 0.75rem;
  border: 1px solid white;
  transition: var(--transition);
}
.camera-icon:hover {
  background: var(--primary-dark);
}

/* School address (desktop only) */
.school-address {
  font-size: 0.8rem;
  color: var(--gray-500);
  margin-top: 0.125rem;
}

/* Academic badge row (below header) */
.academic-badge-row {
  background: var(--card-bg);      /* White background for badge area */
  padding: 0.5rem 1.5rem;
  border-top: 1px solid var(--gray-200);
  border-bottom: 1px solid var(--gray-200);
}
.academic-badge {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.academic-badge .override-badge {
  background: #f59e0b;
  color: #000;
  padding: 2px 6px;
  border-radius: 12px;
  font-size: 0.7rem;
}

/* Subscription badge */
.subscription-badge {
  font-weight: bold;
  font-size: 0.9rem;
  padding: 4px 12px;
  border-radius: 20px;
  background: #f1f5f9;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.subscription-badge.active {
  background: #dcfce7;
  color: #15803d;
}
.subscription-badge.expired {
  background: #fee2e2;
  color: #b91c1c;
}

/* Logout button (desktop) – hidden on mobile via CSS */
.logout-btn {
  background: var(--danger);
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  cursor: pointer;
  font-weight: 600;
  transition: var(--transition);
}
.logout-btn:hover {
  background: var(--danger-dark);
  transform: translateY(-1px);
}

/* Hamburger menu (mobile) */
.hamburger-menu {
  background: none;
  border: none;
  font-size: 1.75rem;
  cursor: pointer;
  color: var(--gray-700);
  padding: 0.25rem;
  line-height: 1;
  transition: var(--transition);
  display: block;
}
.hamburger-menu:hover {
  color: var(--primary);
}

/* Mobile Sidebar – EXTRA HIGH Z-INDEX */
.mobile-sidebar {
  position: fixed;
  top: 0;
  left: -280px;
  width: 280px;
  height: 100vh;
  background: var(--secondary);
  z-index: 10000;               /* Extremely high to stay above all elements */
  transition: left 0.3s ease;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-md);
}
.mobile-sidebar.open {
  left: 0;
}
.mobile-sidebar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem;
  border-bottom: 1px solid var(--gray-700);
}
.mobile-sidebar-header .acadex-brand {
  font-size: 1.5rem;
  font-weight: bold;
  color: white;
}
.mobile-sidebar .sidebar-nav {
  padding: 1rem 0;
  flex: 1;
}
.mobile-sidebar .sidebar-nav a {
  padding: 0.75rem 1.5rem;
  border-left: none;
}
.mobile-logout-wrapper {
  margin-top: auto;
  padding: 1rem;
  border-top: 1px solid var(--gray-700);
}
.mobile-logout-btn {
  width: 100%;
  background: var(--danger);
  color: white;
  border: none;
  padding: 0.6rem;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}
.mobile-logout-btn:hover {
  background: var(--danger-dark);
}

/* Overlay – slightly lower than sidebar */
.overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.5);
  z-index: 9999;                /* High but under sidebar */
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease;
}
.overlay.active {
  opacity: 1;
  visibility: visible;
}

/* Content */
.content {
  padding: 2rem;
  overflow-x: hidden;
  width: 100%;
  max-width: 100%;
  flex: 1;
}

/* Footer */
.app-footer {
  background: var(--card-bg);      /* White footer */
  border-top: 1px solid var(--gray-200);
  padding: 1rem 1.5rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--gray-500);
  margin-top: auto;
}

/* Cards & Welcome */
.welcome-card {
  background: var(--card-bg);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.4s ease;
}
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.welcome-card h1 {
  margin: 0 0 0.5rem;
  font-size: 1.5rem;
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin: 1.5rem 0;
}
.stat-card {
  background: var(--card-bg);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  text-align: center;
  transition: var(--transition);
}
.stat-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.stat-number {
  font-size: 2.5rem;
  font-weight: bold;
  color: var(--primary);
  margin: 0.75rem 0;
}
.stat-label {
  color: var(--gray-500);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Buttons */
.btn-primary, .btn-secondary, .btn-danger, .btn-warning {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  border: none;
  cursor: pointer;
  font-weight: 600;
  transition: var(--transition);
}
.btn-primary {
  background: var(--primary);
  color: white;
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}
.btn-secondary {
  background: var(--gray-500);
  color: white;
}
.btn-secondary:hover {
  background: var(--gray-600);
}
.btn-danger {
  background: var(--danger);
  color: white;
}
.btn-danger:hover {
  background: var(--danger-dark);
}
.btn-warning {
  background: var(--warning);
  color: white;
}
.btn-warning:hover {
  background: #d97706;
}

/* Form Elements */
.form-card {
  background: var(--card-bg);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow);
}
.form-group {
  margin-bottom: 1rem;
}
.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--gray-700);
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.625rem;
  border: 1px solid var(--gray-300);
  border-radius: var(--border-radius);
  font-size: 0.875rem;
  transition: var(--transition);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

/* Tables & Horizontal Scrolling */
.table-responsive-wrapper {
  overflow-x: auto;
  overflow-y: visible;
  width: 100%;
  display: block;
  margin: 1rem 0;
  border-radius: var(--border-radius);
  border: 1px solid var(--gray-200);
  -webkit-overflow-scrolling: touch;
}
.table-responsive-wrapper table {
  width: 100%;
  min-width: 600px;
  border-collapse: collapse;
}

.data-table,
.scores-table,
.broadsheet-table {
  background: var(--card-bg);
  font-size: 0.875rem;
}
.data-table th,
.data-table td,
.scores-table th,
.scores-table td,
.broadsheet-table th,
.broadsheet-table td {
  padding: 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--gray-200);
}
.data-table th,
.scores-table th,
.broadsheet-table th {
  background: var(--gray-100);
  font-weight: 600;
  color: var(--gray-700);
}

/* Report Card specific */
.report-card {
  background: var(--card-bg);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  overflow-x: auto;
  padding: 0.5rem;
}
.report-card .subject-table {
  min-width: 500px;
}
.report-card .subject-table th:not(:first-child) {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  height: 80px;
  width: 38px;
  padding: 0.5rem 0.25rem;
}

/* Subscription Banners */
.payment-banner {
  background: linear-gradient(135deg, var(--secondary), #1e293b);
  border-radius: var(--border-radius);
  padding: 1.25rem;
  margin-bottom: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  color: white;
  box-shadow: var(--shadow-md);
}
.payment-banner-content {
  flex: 2;
}
.payment-banner h3 {
  margin: 0 0 0.5rem;
}
.payment-buttons {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.paystack-btn {
  background: #00b3f0;
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}
.paystack-btn:hover {
  background: #0095cc;
  transform: scale(1.02);
}
.whatsapp-btn {
  background: #25D366;
  color: white;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
}
.whatsapp-btn:hover {
  background: #128C7E;
}

/* Modals */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.5);
  z-index: 1000;
  justify-content: center;
  align-items: center;
}
.modal-content {
  background: var(--card-bg);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  max-width: 650px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-md);
  animation: slideUp 0.3s ease;
}
@keyframes slideUp {
  from { transform: translateY(30px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}
.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}
.close-modal {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--gray-500);
  transition: var(--transition);
}
.close-modal:hover {
  color: var(--danger);
}
.form-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: flex-end;
  margin-top: 1.5rem;
}

/* Login / Signup Pages */
body:not(.dashboard-container) .container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  padding: 1.5rem;
}
.card {
  background: var(--card-bg);
  border-radius: 1.5rem;
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  width: 100%;
  max-width: 420px;
}
.card:hover {
  transform: translateY(-4px);
}
.card h1 {
  text-align: center;
  margin-bottom: 0.5rem;
}
.card h2 {
  text-align: center;
  font-size: 1rem;
  color: var(--gray-500);
  margin-bottom: 1.5rem;
}
.links {
  display: flex;
  justify-content: space-between;
  margin-top: 1rem;
  font-size: 0.875rem;
}
.links a {
  color: var(--primary);
  text-decoration: none;
}
.links a:hover {
  text-decoration: underline;
}
.message {
  margin-top: 1rem;
  padding: 0.75rem;
  border-radius: var(--border-radius);
  text-align: center;
  display: none;
}
.message.success {
  display: block;
  background: #d1fae5;
  color: #065f46;
}
.message.error {
  display: block;
  background: #fee2e2;
  color: #991b1b;
}

/* Teacher Clickable Cards */
.clickable-card {
  cursor: pointer;
  transition: var(--transition);
}
.clickable-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.disabled-card {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

/* Filter Buttons */
.filter-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0;
}
.filter-btn {
  background: var(--gray-200);
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 2rem;
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.875rem;
}
.filter-btn.active {
  background: var(--primary);
  color: white;
}
.filter-btn:hover {
  background: var(--gray-300);
}
.filter-btn.active:hover {
  background: var(--primary-dark);
}

/* Images / Media */
img, iframe, video, canvas, svg {
  max-width: 100%;
  height: auto;
}

/* ========== RESPONSIVE – MOBILE OVERRIDES ========== */
@media (max-width: 768px) {
  .sidebar {
    display: none;
  }
  .main-content {
    margin-left: 0;
  }
  .content {
    padding: 1rem;
  }
  /* Stack header rows vertically */
  .header {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    padding: 0.75rem 1rem;
  }
  .school-header-left {
    justify-content: center;
    margin-bottom: 0.5rem;
  }
  /* Hide desktop logout button */
  .logout-btn {
    display: none !important;
  }
  /* Make hamburger bigger */
  .hamburger-menu {
    font-size: 2rem !important;
    padding: 0.5rem !important;
  }
  /* Center school name, bigger */
  .school-name {
    text-align: center;
    width: 100%;
  }
  .school-name h1 {
    font-size: 1.8rem !important;
    text-align: center;
  }
  /* Hide logo and address on mobile */
  .school-logo,
  .school-address {
    display: none !important;
  }
  /* Right group: hamburger left, badge right */
  .header-right {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
  }
  .subscription-badge {
    margin-left: auto;
    margin-right: 0;
  }
  /* Academic badge row centered */
  .academic-badge-row {
    text-align: center;
    justify-content: center;
  }
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .data-table,
  .scores-table,
  .broadsheet-table {
    min-width: 500px;
  }
  .modal-content {
    width: 95%;
    padding: 1rem;
  }
  .form-row {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .school-name h1 {
    font-size: 1.5rem !important;
  }
  .hamburger-menu {
    font-size: 1.8rem !important;
  }
  .welcome-card h1 {
    font-size: 1.25rem;
  }
  .stat-number {
    font-size: 2rem;
  }
  .btn-primary, .btn-secondary, .btn-danger {
    padding: 0.4rem 0.8rem;
    font-size: 0.75rem;
  }
  .filter-btn {
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
  }
}
.spinner-border {
  display: inline-block;
  width: 1rem;
  height: 1rem;
  vertical-align: text-bottom;
  border: 0.2em solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spinner-border 0.75s linear infinite;
}
.spinner-border-sm {
  width: 1rem;
  height: 1rem;
  border-width: 0.2em;
}
@keyframes spinner-border {
  to { transform: rotate(360deg); }
}