/* ==========================================================================
   Cairo Education - Production Design System & Main Stylesheet
   Modern, Mobile-First LMS Design Architecture
   ========================================================================== */

/* --- 1. Design Tokens --- */
:root {
  /* Brand Palette */
  --cairo-primary: #1e3a8a;
  --cairo-primary-light: #2563eb;
  --cairo-primary-hover: #1d4ed8;
  --cairo-primary-50: #eff6ff;
  --cairo-primary-100: #dbeafe;
  --cairo-primary-200: #bfdbfe;

  --cairo-secondary: #0d9488;
  --cairo-secondary-light: #14b8a6;
  --cairo-secondary-50: #f0fdfa;
  --cairo-secondary-100: #ccfbf1;

  --cairo-accent: #f59e0b;
  --cairo-accent-light: #fbbf24;
  --cairo-accent-50: #fffbeb;
  --cairo-accent-100: #fef3c7;

  --cairo-dark: #0f172a;
  --cairo-dark-soft: #1e293b;
  --cairo-gray-700: #334155;
  --cairo-gray-600: #475569;
  --cairo-gray-500: #64748b;
  --cairo-gray-400: #94a3b8;
  --cairo-gray-300: #cbd5e1;
  --cairo-gray-200: #e2e8f0;
  --cairo-gray-100: #f1f5f9;
  --cairo-bg: #f8fafc;
  --cairo-surface: #ffffff;

  --cairo-success: #10b981;
  --cairo-success-50: #ecfdf5;
  --cairo-success-100: #d1fae5;
  --cairo-danger: #ef4444;
  --cairo-danger-50: #fef2f2;
  --cairo-danger-100: #fee2e2;
  --cairo-warning: #f59e0b;
  --cairo-info: #0284c7;
  --cairo-info-50: #f0f9ff;

  /* Spacing Scale (8px Grid) */
  --cairo-space-xs: 4px;
  --cairo-space-sm: 8px;
  --cairo-space-md: 16px;
  --cairo-space-lg: 24px;
  --cairo-space-xl: 32px;
  --cairo-space-2xl: 48px;
  --cairo-space-3xl: 64px;

  /* Typography */
  --cairo-font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Noto Sans Devanagari', sans-serif;
  --cairo-font-heading: 'Poppins', 'Inter', -apple-system, sans-serif;

  /* Shadows */
  --cairo-shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.05);
  --cairo-shadow-sm: 0 2px 4px rgba(15, 23, 42, 0.06);
  --cairo-shadow-md: 0 4px 14px rgba(15, 23, 42, 0.08);
  --cairo-shadow-lg: 0 10px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.05);
  --cairo-shadow-xl: 0 20px 35px -10px rgba(15, 23, 42, 0.15);

  /* Border Radii */
  --cairo-radius-sm: 6px;
  --cairo-radius-md: 10px;
  --cairo-radius-lg: 14px;
  --cairo-radius-xl: 20px;
  --cairo-radius-full: 9999px;

  /* Transitions */
  --cairo-transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- 2. Base & Typography Resets --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--cairo-font-sans);
  background-color: var(--cairo-bg);
  color: var(--cairo-dark);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main.cairo-main-content {
  flex: 1;
  padding-bottom: var(--cairo-space-3xl);
}

@media (max-width: 991px) {
  main.cairo-main-content {
    padding-bottom: calc(var(--cairo-space-3xl) + 64px); /* Extra space for mobile bottom bar */
  }
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--cairo-font-heading);
  color: var(--cairo-dark);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

h1 { font-size: 1.85rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.1rem; }
h5 { font-size: 1rem; }
h6 { font-size: 0.875rem; }

@media (min-width: 768px) {
  h1 { font-size: 2.5rem; }
  h2 { font-size: 2rem; }
  h3 { font-size: 1.5rem; }
  h4 { font-size: 1.25rem; }
}

p {
  margin-bottom: var(--cairo-space-md);
  color: var(--cairo-gray-600);
}

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

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

img, video {
  max-width: 100%;
  height: auto;
  display: block;
}

/* --- 3. Layout Container --- */
.cairo-container {
  width: 100%;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--cairo-space-md);
  padding-right: var(--cairo-space-md);
}

@media (min-width: 768px) {
  .cairo-container {
    padding-left: var(--cairo-space-lg);
    padding-right: var(--cairo-space-lg);
  }
}

@media (min-width: 1280px) {
  .cairo-container {
    padding-left: var(--cairo-space-xl);
    padding-right: var(--cairo-space-xl);
  }
}

/* --- 4. Buttons --- */
.cairo-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--cairo-space-sm);
  font-family: var(--cairo-font-sans);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 11px 22px;
  border-radius: var(--cairo-radius-md);
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: var(--cairo-transition);
  text-decoration: none;
  text-align: center;
  white-space: nowrap;
  min-height: 44px; /* Touch target size */
}

.cairo-btn:focus-visible {
  outline: 2px solid var(--cairo-primary-light);
  outline-offset: 2px;
}

.cairo-btn-primary {
  background: linear-gradient(135deg, var(--cairo-primary) 0%, var(--cairo-primary-light) 100%);
  color: #fff;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}
.cairo-btn-primary:hover {
  background: linear-gradient(135deg, var(--cairo-primary-hover) 0%, var(--cairo-primary) 100%);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.35);
}

.cairo-btn-secondary {
  background: var(--cairo-secondary);
  color: #fff;
  box-shadow: 0 4px 12px rgba(13, 148, 136, 0.2);
}
.cairo-btn-secondary:hover {
  background: var(--cairo-secondary-light);
  color: #fff;
  transform: translateY(-2px);
}

.cairo-btn-accent {
  background: linear-gradient(135deg, #d97706 0%, var(--cairo-accent) 100%);
  color: #fff;
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}
.cairo-btn-accent:hover {
  background: linear-gradient(135deg, var(--cairo-accent) 0%, #f59e0b 100%);
  color: #fff;
  transform: translateY(-2px);
}

.cairo-btn-outline {
  background: transparent;
  color: var(--cairo-primary-light);
  border-color: var(--cairo-primary-light);
}
.cairo-btn-outline:hover {
  background: var(--cairo-primary-50);
  border-color: var(--cairo-primary-hover);
  color: var(--cairo-primary-hover);
  transform: translateY(-1px);
}

.cairo-btn-light {
  background: #fff;
  color: var(--cairo-dark);
  border-color: var(--cairo-gray-200);
}
.cairo-btn-light:hover {
  background: var(--cairo-gray-100);
  border-color: var(--cairo-gray-300);
  color: var(--cairo-dark);
}

.cairo-btn-danger {
  background: var(--cairo-danger);
  color: #fff;
}
.cairo-btn-danger:hover {
  background: #dc2626;
  color: #fff;
}

.cairo-btn-sm {
  padding: 7px 14px;
  font-size: 0.8125rem;
  min-height: 36px;
  border-radius: var(--cairo-radius-sm);
}

.cairo-btn-lg {
  padding: 14px 28px;
  font-size: 1.0625rem;
  min-height: 52px;
  border-radius: var(--cairo-radius-lg);
}

.cairo-btn-block {
  width: 100%;
}

/* --- 5. Header & Navigation --- */
.cairo-header {
  background: #ffffff;
  border-bottom: 1px solid var(--cairo-gray-200);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--cairo-shadow-xs);
}

.cairo-topbar {
  background: #0f172a;
  color: #cbd5e1;
  font-size: 0.8125rem;
  padding: 8px 0;
  border-bottom: 1px solid #1e293b;
}

.cairo-topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--cairo-space-md);
}

.cairo-topbar-tagline {
  color: #fbbf24;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
}

.cairo-topbar-contact {
  display: flex;
  align-items: center;
  gap: var(--cairo-space-md);
}

.cairo-topbar-contact a {
  color: #cbd5e1;
  display: flex;
  align-items: center;
  gap: 6px;
}
.cairo-topbar-contact a:hover {
  color: #38bdf8;
}

@media (max-width: 767px) {
  .cairo-topbar-contact {
    display: none;
  }
}

.cairo-nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: var(--cairo-space-lg);
}

.cairo-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.cairo-logo-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--cairo-radius-md);
  background: linear-gradient(135deg, var(--cairo-primary) 0%, var(--cairo-primary-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 22px;
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.3);
}

.cairo-brand-text h1 {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--cairo-primary);
  line-height: 1.1;
  margin: 0;
}

.cairo-brand-text span {
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--cairo-secondary);
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

/* Header Search */
.cairo-nav-search {
  display: none;
  flex: 1;
  max-width: 380px;
  position: relative;
}

@media (min-width: 1024px) {
  .cairo-nav-search {
    display: block;
  }
}

.cairo-nav-search input {
  width: 100%;
  height: 42px;
  background: var(--cairo-gray-100);
  border: 1px solid var(--cairo-gray-200);
  border-radius: var(--cairo-radius-full);
  padding: 0 16px 0 42px;
  font-size: 0.875rem;
  color: var(--cairo-dark);
  transition: var(--cairo-transition);
}

.cairo-nav-search input:focus {
  outline: none;
  background: #fff;
  border-color: var(--cairo-primary-light);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.cairo-nav-search i {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--cairo-gray-400);
  font-size: 14px;
}

/* Desktop Menu */
.cairo-nav-menu {
  display: none;
  align-items: center;
  gap: var(--cairo-space-lg);
  list-style: none;
}

@media (min-width: 992px) {
  .cairo-nav-menu {
    display: flex;
  }
}

.cairo-nav-link {
  color: var(--cairo-gray-700);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 8px 12px;
  border-radius: var(--cairo-radius-sm);
  transition: var(--cairo-transition);
  display: flex;
  align-items: center;
  gap: 6px;
}

.cairo-nav-link:hover, .cairo-nav-link.active {
  color: var(--cairo-primary-light);
  background: var(--cairo-primary-50);
}

/* Header Actions */
.cairo-nav-actions {
  display: flex;
  align-items: center;
  gap: var(--cairo-space-sm);
}

.cairo-user-menu {
  position: relative;
}

.cairo-avatar-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 12px;
  background: var(--cairo-gray-100);
  border: 1px solid var(--cairo-gray-200);
  border-radius: var(--cairo-radius-full);
  cursor: pointer;
  transition: var(--cairo-transition);
}

.cairo-avatar-btn:hover {
  background: var(--cairo-primary-50);
  border-color: var(--cairo-primary-200);
}

.cairo-avatar-circle {
  width: 32px;
  height: 32px;
  border-radius: var(--cairo-radius-full);
  background: var(--cairo-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 13px;
}

.cairo-avatar-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--cairo-dark);
  max-width: 110px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

@media (max-width: 767px) {
  .cairo-avatar-name {
    display: none;
  }
}

.cairo-user-dropdown {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  width: 220px;
  background: #fff;
  border-radius: var(--cairo-radius-lg);
  box-shadow: var(--cairo-shadow-lg);
  border: 1px solid var(--cairo-gray-200);
  padding: 8px 0;
  list-style: none;
  display: none;
  z-index: 1010;
}

.cairo-user-dropdown.show {
  display: block;
}

.cairo-user-dropdown a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  color: var(--cairo-gray-700);
  font-size: 0.875rem;
  font-weight: 500;
}

.cairo-user-dropdown a:hover {
  background: var(--cairo-gray-100);
  color: var(--cairo-primary-light);
}

.cairo-user-dropdown .dropdown-divider {
  height: 1px;
  background: var(--cairo-gray-200);
  margin: 6px 0;
}

/* Mobile: Hide duplicate top drawer & hamburger menu. Bottom nav is the single primary navigation on mobile */
.cairo-mobile-toggle,
.cairo-drawer,
.cairo-drawer-overlay {
  display: none !important;
}

.cairo-drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(4px);
  z-index: 1090;
  display: none;
}

.cairo-drawer-overlay.open {
  display: block;
}

.cairo-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--cairo-space-xl);
  padding-bottom: var(--cairo-space-md);
  border-bottom: 1px solid var(--cairo-gray-200);
}

.cairo-drawer-menu {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--cairo-space-sm);
  margin-bottom: var(--cairo-space-xl);
}

.cairo-drawer-menu a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--cairo-radius-md);
  color: var(--cairo-gray-700);
  font-weight: 600;
  font-size: 0.9375rem;
}

.cairo-drawer-menu a:hover, .cairo-drawer-menu a.active {
  background: var(--cairo-primary-50);
  color: var(--cairo-primary-light);
}

/* Mobile Bottom Navigation Bar */
.cairo-mobile-bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--cairo-gray-200);
  display: flex;
  align-items: center;
  justify-content: space-around;
  z-index: 1000;
  box-shadow: 0 -4px 15px rgba(0, 0, 0, 0.05);
}

@media (min-width: 992px) {
  .cairo-mobile-bottom-nav {
    display: none;
  }
}

.cairo-bottom-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  color: var(--cairo-gray-500);
  font-size: 0.6875rem;
  font-weight: 600;
  text-decoration: none;
  flex: 1;
  height: 100%;
  transition: var(--cairo-transition);
}

.cairo-bottom-nav-item i {
  font-size: 18px;
}

.cairo-bottom-nav-item.active, .cairo-bottom-nav-item:hover {
  color: var(--cairo-primary-light);
}

/* --- 6. Hero Section --- */
.cairo-hero {
  background: linear-gradient(135deg, #0b1329 0%, #1e3a8a 60%, #0f172a 100%);
  color: #fff;
  padding: var(--cairo-space-2xl) 0 var(--cairo-space-3xl);
  position: relative;
  overflow: hidden;
}

@media (min-width: 768px) {
  .cairo-hero {
    padding: var(--cairo-space-3xl) 0 80px;
  }
}

.cairo-hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--cairo-space-2xl);
  align-items: center;
}

@media (min-width: 992px) {
  .cairo-hero-inner {
    grid-template-columns: 1.2fr 0.8fr;
  }
}

.cairo-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(8px);
  padding: 6px 16px;
  border-radius: var(--cairo-radius-full);
  font-size: 0.8125rem;
  font-weight: 600;
  color: #38bdf8;
  margin-bottom: var(--cairo-space-lg);
}

.cairo-pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--cairo-radius-full);
  background: #38bdf8;
  box-shadow: 0 0 0 0 rgba(56, 189, 248, 0.7);
  animation: cairoPulse 2s infinite;
}

@keyframes cairoPulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(56, 189, 248, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(56, 189, 248, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(56, 189, 248, 0); }
}

.cairo-hero-title {
  color: #ffffff;
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: var(--cairo-space-md);
}

@media (min-width: 768px) {
  .cairo-hero-title {
    font-size: 2.85rem;
  }
}

.cairo-hero-desc {
  color: #cbd5e1;
  font-size: 1.0625rem;
  line-height: 1.65;
  margin-bottom: var(--cairo-space-xl);
  max-width: 620px;
}

.cairo-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--cairo-space-md);
  margin-bottom: var(--cairo-space-2xl);
}

.cairo-hero-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--cairo-space-md);
  padding-top: var(--cairo-space-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

@media (min-width: 640px) {
  .cairo-hero-stats {
    grid-template-columns: repeat(4, 1fr);
  }
}

.cairo-hero-stat-item strong {
  display: block;
  font-size: 1.75rem;
  font-weight: 800;
  color: #fbbf24;
  line-height: 1.1;
}

.cairo-hero-stat-item span {
  font-size: 0.8125rem;
  color: #94a3b8;
  font-weight: 500;
}

/* Hero Visual Card */
.cairo-hero-card {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(16px);
  border-radius: var(--cairo-radius-xl);
  padding: var(--cairo-space-xl);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.cairo-hero-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: var(--cairo-space-lg);
}

.cairo-hero-card-header i {
  font-size: 28px;
  color: #38bdf8;
}

.cairo-hero-card-header h3 {
  color: #fff;
  font-size: 1.25rem;
  margin: 0;
}

.cairo-hero-features-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--cairo-space-md);
}

.cairo-hero-features-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #e2e8f0;
  font-size: 0.9375rem;
}

.cairo-hero-features-list li i {
  color: #10b981;
}

/* --- 7. Sections & Section Headers --- */
.cairo-section {
  padding: var(--cairo-space-2xl) 0;
}

@media (min-width: 768px) {
  .cairo-section {
    padding: var(--cairo-space-3xl) 0;
  }
}

.cairo-section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto var(--cairo-space-2xl);
}

.cairo-section-badge {
  display: inline-block;
  color: var(--cairo-secondary);
  background: var(--cairo-secondary-50);
  font-weight: 700;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 4px 12px;
  border-radius: var(--cairo-radius-full);
  margin-bottom: var(--cairo-space-sm);
}

.cairo-section-title {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--cairo-dark);
  margin-bottom: var(--cairo-space-sm);
}

@media (min-width: 768px) {
  .cairo-section-title {
    font-size: 2.25rem;
  }
}

.cairo-section-desc {
  font-size: 1rem;
  color: var(--cairo-gray-500);
}

/* --- 8. Category Cards --- */
.cairo-category-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--cairo-space-md);
}

@media (min-width: 640px) {
  .cairo-category-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--cairo-space-lg);
  }
}

@media (min-width: 1024px) {
  .cairo-category-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.cairo-category-card {
  background: var(--cairo-surface);
  border: 1px solid var(--cairo-gray-200);
  border-radius: var(--cairo-radius-lg);
  padding: var(--cairo-space-xl) var(--cairo-space-lg);
  text-align: center;
  transition: var(--cairo-transition);
  text-decoration: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  box-shadow: var(--cairo-shadow-xs);
}

.cairo-category-card:hover {
  transform: translateY(-4px);
  border-color: var(--cairo-primary-light);
  box-shadow: var(--cairo-shadow-md);
}

.cairo-category-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--cairo-radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: var(--cairo-space-md);
}

.cairo-cat-blue { background: var(--cairo-primary-50); color: var(--cairo-primary-light); }
.cairo-cat-green { background: var(--cairo-secondary-50); color: var(--cairo-secondary); }
.cairo-cat-orange { background: var(--cairo-accent-50); color: var(--cairo-accent); }
.cairo-cat-purple { background: #faf5ff; color: #9333ea; }

.cairo-category-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--cairo-dark);
  margin-bottom: var(--cairo-space-xs);
}

.cairo-category-card p {
  font-size: 0.875rem;
  color: var(--cairo-gray-500);
  margin-bottom: var(--cairo-space-md);
}

.cairo-category-link {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--cairo-primary-light);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* --- 9. Course Cards Grid --- */
.cairo-course-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--cairo-space-lg);
}

@media (min-width: 640px) {
  .cairo-course-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .cairo-course-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.cairo-course-card {
  background: var(--cairo-surface);
  border: 1px solid var(--cairo-gray-200);
  border-radius: var(--cairo-radius-lg);
  overflow: hidden;
  box-shadow: var(--cairo-shadow-sm);
  display: flex;
  flex-direction: column;
  transition: var(--cairo-transition);
}

.cairo-course-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--cairo-shadow-lg);
  border-color: var(--cairo-primary-200);
}

.cairo-card-thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, #1e3a8a 0%, #0f172a 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  overflow: hidden;
}

.cairo-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cairo-thumb-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(4px);
  color: #fff;
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--cairo-radius-full);
}

.cairo-card-body {
  padding: var(--cairo-space-lg);
  display: flex;
  flex-direction: column;
  flex: 1;
}

.cairo-card-category {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--cairo-secondary);
  text-transform: uppercase;
  letter-spacing: 0.6px;
  margin-bottom: var(--cairo-space-xs);
}

.cairo-card-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--cairo-dark);
  line-height: 1.35;
  margin-bottom: var(--cairo-space-sm);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.cairo-card-instructor {
  font-size: 0.8125rem;
  color: var(--cairo-gray-500);
  margin-bottom: var(--cairo-space-md);
  display: flex;
  align-items: center;
  gap: 6px;
}

.cairo-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--cairo-gray-600);
  padding: var(--cairo-space-sm) 0;
  border-top: 1px solid var(--cairo-gray-100);
  border-bottom: 1px solid var(--cairo-gray-100);
  margin-bottom: var(--cairo-space-md);
}

.cairo-card-footer {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--cairo-space-sm);
}

.cairo-price-group {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.cairo-price-current {
  font-size: 1.375rem;
  font-weight: 800;
  color: var(--cairo-primary);
}

.cairo-price-original {
  font-size: 0.875rem;
  color: var(--cairo-gray-400);
  text-decoration: line-through;
}

/* --- 10. Forms & Auth Cards --- */
.cairo-auth-wrapper {
  min-height: calc(100vh - 200px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--cairo-space-xl) var(--cairo-space-md);
}

.cairo-auth-card {
  width: 100%;
  max-width: 460px;
  background: var(--cairo-surface);
  border-radius: var(--cairo-radius-xl);
  border: 1px solid var(--cairo-gray-200);
  box-shadow: var(--cairo-shadow-lg);
  padding: var(--cairo-space-2xl) var(--cairo-space-xl);
}

.cairo-auth-header {
  text-align: center;
  margin-bottom: var(--cairo-space-xl);
}

.cairo-auth-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--cairo-radius-full);
  background: var(--cairo-primary-50);
  color: var(--cairo-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin: 0 auto var(--cairo-space-md);
}

.cairo-form-group {
  margin-bottom: var(--cairo-space-md);
}

.cairo-form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--cairo-dark);
  margin-bottom: var(--cairo-space-xs);
}

.cairo-input-wrap {
  position: relative;
}

.cairo-input-wrap i {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--cairo-gray-400);
  font-size: 15px;
}

.cairo-form-control {
  width: 100%;
  height: 46px;
  background: var(--cairo-surface);
  border: 1.5px solid var(--cairo-gray-200);
  border-radius: var(--cairo-radius-md);
  padding: 0 14px 0 40px;
  font-size: 0.9375rem;
  color: var(--cairo-dark);
  transition: var(--cairo-transition);
}

.cairo-form-control:focus {
  outline: none;
  border-color: var(--cairo-primary-light);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

/* --- 11. Student Dashboard --- */
.cairo-dashboard-header {
  background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%);
  color: #fff;
  padding: var(--cairo-space-xl) 0;
  margin-bottom: var(--cairo-space-xl);
}

.cairo-dashboard-profile {
  display: flex;
  flex-direction: column;
  gap: var(--cairo-space-md);
  align-items: center;
  text-align: center;
}

@media (min-width: 640px) {
  .cairo-dashboard-profile {
    flex-direction: row;
    text-align: left;
    justify-content: space-between;
  }
}

.cairo-dashboard-avatar {
  width: 72px;
  height: 72px;
  border-radius: var(--cairo-radius-full);
  background: rgba(255, 255, 255, 0.15);
  border: 3px solid rgba(255, 255, 255, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  color: #fff;
}

.cairo-dashboard-info h2 {
  color: #fff;
  font-size: 1.5rem;
  margin-bottom: 4px;
}

.cairo-dashboard-info p {
  color: #94a3b8;
  font-size: 0.875rem;
  margin: 0;
}

.cairo-dashboard-tabs {
  display: flex;
  overflow-x: auto;
  gap: var(--cairo-space-sm);
  padding-bottom: var(--cairo-space-sm);
  margin-bottom: var(--cairo-space-xl);
  border-bottom: 1px solid var(--cairo-gray-200);
}

.cairo-dash-tab-btn {
  padding: 10px 18px;
  border-radius: var(--cairo-radius-md);
  background: transparent;
  border: none;
  color: var(--cairo-gray-600);
  font-weight: 600;
  font-size: 0.9375rem;
  cursor: pointer;
  white-space: nowrap;
  transition: var(--cairo-transition);
  display: flex;
  align-items: center;
  gap: 8px;
}

.cairo-dash-tab-btn:hover {
  background: var(--cairo-gray-100);
  color: var(--cairo-dark);
}

.cairo-dash-tab-btn.active {
  background: var(--cairo-primary-50);
  color: var(--cairo-primary-light);
}

.cairo-tab-pane {
  display: none;
}

.cairo-tab-pane.active {
  display: block;
}

/* --- 12. Classroom Layout --- */
.cairo-classroom-wrapper {
  display: grid;
  grid-template-columns: 1fr;
  min-height: calc(100vh - 72px);
  background: var(--cairo-bg);
}

@media (min-width: 992px) {
  .cairo-classroom-wrapper {
    grid-template-columns: 360px 1fr;
  }
}

.cairo-classroom-sidebar {
  background: var(--cairo-surface);
  border-right: 1px solid var(--cairo-gray-200);
  overflow-y: auto;
  max-height: calc(100vh - 72px);
  padding: var(--cairo-space-md);
}

.cairo-classroom-main {
  padding: var(--cairo-space-md);
  overflow-y: auto;
}

@media (min-width: 768px) {
  .cairo-classroom-main {
    padding: var(--cairo-space-xl);
  }
}

.cairo-video-box {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #000;
  border-radius: var(--cairo-radius-lg);
  overflow: hidden;
  box-shadow: var(--cairo-shadow-lg);
  margin-bottom: var(--cairo-space-lg);
}

.cairo-video-box iframe,
.cairo-video-box video {
  width: 100%;
  height: 100%;
  border: none;
}

/* YouTube Anti-Branding Overscan & Top Mask */
.cairo-yt-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #000;
  overflow: hidden;
}

.cairo-yt-container {
  position: absolute;
  top: -65px;
  left: 0;
  width: 100%;
  height: calc(100% + 65px);
}

.cairo-yt-frame {
  width: 100%;
  height: 100%;
  border: none;
}

.cairo-yt-top-mask {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 52px;
  background: linear-gradient(to bottom, rgba(15, 23, 42, 0.95) 0%, rgba(15, 23, 42, 0.7) 60%, transparent 100%);
  z-index: 10;
  pointer-events: none;
  display: flex;
  align-items: center;
  padding: 0 16px;
}

.cairo-yt-topic-title {
  color: #f8fafc;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.3px;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.8);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: flex;
  align-items: center;
  gap: 8px;
}

.cairo-yt-topic-title i {
  color: #38bdf8;
}

/* Floating Anti-Piracy Watermark */
.cairo-watermark,
.cairo-watermark-overlay {
  position: absolute;
  top: 15%;
  left: 15%;
  color: rgba(255, 255, 255, 0.22);
  font-size: 11px;
  font-weight: 600;
  font-family: monospace;
  letter-spacing: 1px;
  pointer-events: none;
  user-select: none;
  z-index: 100;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.6);
  animation: cairoWatermarkFloat 20s infinite alternate ease-in-out;
}

@keyframes cairoWatermarkFloat {
  0%   { top: 15%; left: 15%; }
  25%  { top: 70%; left: 20%; }
  50%  { top: 30%; left: 65%; }
  70%  { top: 75%; left: 70%; }
  100% { top: 20%; left: 35%; }
}

/* --- 13. Footer --- */
.cairo-footer {
  background: #0b1329;
  color: #94a3b8;
  padding: var(--cairo-space-3xl) 0 var(--cairo-space-xl);
  border-top: 1px solid #1e293b;
  margin-top: auto;
}

.cairo-footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--cairo-space-2xl);
  margin-bottom: var(--cairo-space-3xl);
}

@media (min-width: 640px) {
  .cairo-footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .cairo-footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  }
}

.cairo-footer-col h4 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: var(--cairo-space-lg);
  font-weight: 700;
}

.cairo-footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.cairo-footer-links a {
  color: #94a3b8;
  font-size: 0.875rem;
  transition: var(--cairo-transition);
}

.cairo-footer-links a:hover {
  color: #38bdf8;
  padding-left: 4px;
}

.cairo-footer-bottom {
  padding-top: var(--cairo-space-xl);
  border-top: 1px solid #1e293b;
  display: flex;
  flex-direction: column;
  gap: var(--cairo-space-md);
  align-items: center;
  text-align: center;
  font-size: 0.8125rem;
}

/* --- Google Play Style App Download Badge --- */
.cairo-app-download-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: #000000;
  color: #ffffff !important;
  padding: 8px 18px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.cairo-app-download-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.3);
  background: #111827;
  color: #ffffff !important;
}

.cairo-app-download-btn .cairo-play-icon {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

.cairo-app-download-btn .cairo-btn-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
  text-align: left;
}

.cairo-app-download-btn .cairo-btn-small-text {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: #94a3b8;
  font-weight: 600;
}

.cairo-app-download-btn .cairo-btn-main-text {
  font-size: 15px;
  font-weight: 700;
  color: #ffffff;
}

/* --- Dedicated LMS Layout (Student & Staff Portals) --- */
.cairo-portal-wrap {
  display: flex;
  min-height: 100vh;
  background: #f8fafc;
}

.cairo-portal-sidebar {
  width: 270px;
  background: #0f172a;
  color: #cbd5e1;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  transition: all 0.3s ease;
  z-index: 100;
}

@media (max-width: 991px) {
  .cairo-portal-sidebar {
    position: fixed;
    top: 0;
    bottom: 0;
    left: -270px;
  }
  .cairo-portal-sidebar.open {
    left: 0;
  }
}

.cairo-portal-brand {
  padding: 24px 20px;
  border-bottom: 1px solid #1e293b;
  display: flex;
  align-items: center;
  gap: 12px;
}

.cairo-portal-brand h2 {
  font-size: 18px;
  font-weight: 800;
  color: #fff;
  margin: 0;
}

.cairo-portal-nav {
  padding: 16px 12px;
  flex: 1;
  overflow-y: auto;
  list-style: none;
  margin: 0;
}

.cairo-portal-nav li {
  margin-bottom: 4px;
}

.cairo-portal-nav a {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  color: #94a3b8;
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  border-radius: 8px;
  transition: all 0.2s ease;
}

.cairo-portal-nav a:hover,
.cairo-portal-nav a.active {
  color: #ffffff;
  background: #1e293b;
  border-left: 3px solid #2563eb;
}

.cairo-portal-nav a i {
  font-size: 16px;
  width: 20px;
  text-align: center;
}

.cairo-portal-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  overflow-x: hidden;
}

.cairo-portal-topbar {
  height: 70px;
  background: #ffffff;
  border-bottom: 1px solid #e2e8f0;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 90;
}

.cairo-portal-content {
  padding: 24px;
  flex: 1;
}

@media (max-width: 767px) {
  .cairo-portal-content {
    padding: 16px;
  }
}


/* --- 14. Mobile Sticky Enroll Bar (Single Course) --- */
.cairo-mobile-sticky-enroll {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-top: 1px solid var(--cairo-gray-200);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  z-index: 1000;
  box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.08);
}

@media (min-width: 992px) {
  .cairo-mobile-sticky-enroll {
    display: none;
  }
}

.cairo-mobile-enroll-price {
  display: flex;
  flex-direction: column;
}

.cairo-mobile-enroll-price .cairo-price {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--cairo-primary);
  line-height: 1.2;
}

.cairo-mobile-enroll-price .cairo-regular-price {
  font-size: 0.8125rem;
  color: var(--cairo-gray-400);
  text-decoration: line-through;
}

.cairo-mobile-sticky-enroll .cairo-btn {
  flex: 1;
  max-width: 220px;
  padding: 10px 16px;
  font-size: 0.9375rem;
}

/* --- 15. Student Auth Card & Tabs --- */
.cairo-auth-card {
  max-width: 480px;
  margin: 0 auto;
  background: var(--cairo-surface);
  border-radius: var(--cairo-radius-xl);
  padding: var(--cairo-space-2xl);
  box-shadow: var(--cairo-shadow-xl);
  border: 1px solid var(--cairo-gray-200);
}

.cairo-auth-tabs {
  display: flex;
  background: var(--cairo-gray-100);
  border-radius: var(--cairo-radius-full);
  padding: 4px;
  margin-bottom: var(--cairo-space-xl);
}

.cairo-auth-tab-btn {
  flex: 1;
  text-align: center;
  padding: 10px 16px;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--cairo-radius-full);
  border: none;
  background: transparent;
  color: var(--cairo-gray-600);
  cursor: pointer;
  transition: var(--cairo-transition);
}

.cairo-auth-tab-btn.active {
  background: var(--cairo-primary);
  color: #fff;
  box-shadow: var(--cairo-shadow-sm);
}

/* --- 16. Pagination --- */
.cairo-pagination-wrap ul.page-numbers {
  display: inline-flex;
  gap: 6px;
  list-style: none;
  padding: 0;
  margin: 0;
  align-items: center;
}

.cairo-pagination-wrap .page-numbers {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 14px;
  border-radius: var(--cairo-radius-md);
  border: 1px solid var(--cairo-gray-200);
  background: var(--cairo-surface);
  color: var(--cairo-gray-700);
  font-weight: 600;
  font-size: 0.9375rem;
  text-decoration: none;
  transition: var(--cairo-transition);
}

.cairo-pagination-wrap .page-numbers.current {
  background: var(--cairo-primary);
  color: #fff;
  border-color: var(--cairo-primary);
}

.cairo-pagination-wrap a.page-numbers:hover {
  background: var(--cairo-primary-50);
  border-color: var(--cairo-primary);
  color: var(--cairo-primary);
}

/* --- 17. Navigation Menu Enhancements for Multi-Portal & Astra --- */
.cairo-nav-container {
  display: none;
}

@media (min-width: 992px) {
  .cairo-nav-container {
    display: flex;
    align-items: center;
  }
}

.cairo-nav-staff-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: #ecfdf5;
  color: #059669;
  border: 1px solid #a7f3d0;
  border-radius: var(--cairo-radius-full);
  font-size: 0.8125rem;
  font-weight: 700;
  text-decoration: none;
  transition: var(--cairo-transition);
  white-space: nowrap;
}

.cairo-nav-staff-btn:hover {
  background: #059669;
  color: #fff;
  border-color: #059669;
}

.cairo-nav-login-btn {
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

@media (max-width: 576px) {
  .cairo-nav-staff-btn {
    padding: 5px 10px;
    font-size: 0.75rem;
  }
  .cairo-nav-login-btn {
    padding: 5px 10px;
    font-size: 0.75rem;
  }
}

.cairo-portal-switcher-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.cairo-portal-switch-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: var(--cairo-radius-full);
  background: #fff;
  border: 1px solid var(--cairo-gray-200);
  color: var(--cairo-gray-700);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  transition: var(--cairo-transition);
  box-shadow: var(--cairo-shadow-xs);
}

.cairo-portal-switch-item:hover {
  background: var(--cairo-primary-50);
  color: var(--cairo-primary);
  border-color: var(--cairo-primary-200);
}

.cairo-portal-switch-item.active {
  background: var(--cairo-primary);
  color: #fff;
  border-color: var(--cairo-primary);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

.cairo-nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.cairo-nav-menu > li {
  position: relative;
}

.cairo-nav-menu > li > a {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--cairo-gray-700);
  border-radius: var(--cairo-radius-md);
  text-decoration: none;
  transition: var(--cairo-transition);
  white-space: nowrap;
}

.cairo-nav-menu > li > a:hover,
.cairo-nav-menu > li.current-menu-item > a {
  color: var(--cairo-primary);
  background: var(--cairo-primary-50);
}

/* Dropdown Sub-menu */
.cairo-nav-menu .sub-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 240px;
  background: #fff;
  border-radius: var(--cairo-radius-lg);
  box-shadow: var(--cairo-shadow-xl);
  border: 1px solid var(--cairo-gray-200);
  padding: 8px 0;
  list-style: none;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.2s ease;
  z-index: 1020;
}

.cairo-nav-menu li:hover > .sub-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.cairo-nav-menu .sub-menu li a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  color: var(--cairo-gray-700);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  transition: var(--cairo-transition);
}

.cairo-nav-menu .sub-menu li a:hover {
  background: var(--cairo-primary-50);
  color: var(--cairo-primary);
  padding-left: 22px;
}

/* Specific Menu Button Styles */
.cairo-student-login-btn a {
  background: #eff6ff !important;
  color: #2563eb !important;
  border: 1px solid #bfdbfe !important;
  border-radius: var(--cairo-radius-full) !important;
  padding: 6px 14px !important;
}

.cairo-student-login-btn a:hover {
  background: #2563eb !important;
  color: #fff !important;
}

.cairo-staff-login-btn a {
  background: #ecfdf5 !important;
  color: #059669 !important;
  border: 1px solid #a7f3d0 !important;
  border-radius: var(--cairo-radius-full) !important;
  padding: 6px 14px !important;
}

.cairo-staff-login-btn a:hover {
  background: #059669 !important;
  color: #fff !important;
}

.cairo-admin-login-btn a {
  background: #fef3c7 !important;
  color: #b45309 !important;
  border: 1px solid #fde68a !important;
  border-radius: var(--cairo-radius-full) !important;
  padding: 6px 14px !important;
}

.cairo-admin-login-btn a:hover {
  background: #b45309 !important;
  color: #fff !important;
}

.cairo-menu-app-download-btn a {
  background: linear-gradient(135deg, #059669 0%, #10b981 100%) !important;
  color: #fff !important;
  border-radius: var(--cairo-radius-full) !important;
  padding: 8px 18px !important;
  font-weight: 700 !important;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3) !important;
}

.cairo-menu-app-download-btn a:hover {
  background: linear-gradient(135deg, #047857 0%, #059669 100%) !important;
  transform: translateY(-2px);
}

/* Mobile Drawer Styles */
.cairo-drawer-nav {
  padding: 10px 0;
}

.cairo-drawer-menu {
  list-style: none;
  padding: 0;
  margin: 0;
}

.cairo-drawer-menu li a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--cairo-gray-700);
  text-decoration: none;
  border-radius: var(--cairo-radius-md);
}

.cairo-drawer-menu li a:hover,
.cairo-drawer-menu li a.active {
  background: var(--cairo-primary-50);
  color: var(--cairo-primary);
}

.drawer-section-title {
  padding: 14px 14px 6px;
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--cairo-gray-400);
}

/* Dedicated Auth Page Wrapper */
.cairo-auth-page-wrapper {
  min-height: calc(100vh - 200px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 16px;
  background: #f8fafc;
}

.cairo-auth-card {
  max-width: 480px;
  width: 100%;
  margin: 0 auto;
  background: #fff;
  border-radius: 20px;
  padding: 36px 30px;
  box-shadow: 0 20px 40px -15px rgba(0,0,0,0.07);
  border: 1px solid var(--cairo-gray-200);
}

.cairo-auth-header {
  text-align: center;
  margin-bottom: 24px;
}

.cairo-auth-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #eff6ff;
  color: #2563eb;
  border: 1px solid #bfdbfe;
  padding: 5px 14px;
  border-radius: 30px;
  font-size: 0.8125rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.cairo-auth-header h2 {
  font-family: 'Poppins', sans-serif;
  font-size: 1.625rem;
  font-weight: 800;
  color: var(--cairo-dark);
  margin-bottom: 6px;
}

.cairo-auth-header p {
  font-size: 0.875rem;
  color: var(--cairo-gray-500);
  margin: 0;
}

.cairo-auth-tabs {
  display: flex;
  background: var(--cairo-gray-100);
  border-radius: 12px;
  padding: 4px;
  margin-bottom: 24px;
}

.cairo-tab-btn {
  flex: 1;
  text-align: center;
  padding: 10px 14px;
  font-size: 0.875rem;
  font-weight: 700;
  border-radius: 10px;
  border: none;
  background: transparent;
  color: var(--cairo-gray-600);
  cursor: pointer;
  transition: all 0.2s;
}

.cairo-tab-btn.active {
  background: #fff;
  color: var(--cairo-primary);
  box-shadow: var(--cairo-shadow-sm);
}

.cairo-demo-creds-box {
  background: #f8fafc;
  border: 1px solid var(--cairo-gray-200);
  border-left: 4px solid var(--cairo-primary);
  border-radius: 8px;
  padding: 14px 16px;
  margin-top: 20px;
  font-size: 0.8125rem;
  line-height: 1.6;
}

.cairo-demo-creds-box code {
  background: #e2e8f0;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: #0f172a;
}

.cairo-auth-footer {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--cairo-gray-200);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-size: 0.8125rem;
}

/* ==========================================================================
   Course Catalog & Cards Redesign
   ========================================================================== */
.cairo-catalog-filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--cairo-space-md);
  margin-bottom: var(--cairo-space-xl);
}

.cairo-filter-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.cairo-catalog-search {
  flex: 1;
  max-width: 400px;
}

.cairo-search-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.cairo-search-input-wrap i {
  position: absolute;
  left: 14px;
  color: var(--cairo-gray-400);
  pointer-events: none;
}

.cairo-search-input-wrap input {
  width: 100%;
  padding: 10px 90px 10px 38px;
  border: 1px solid var(--cairo-gray-200);
  border-radius: var(--cairo-radius-full);
  font-size: 0.875rem;
  background: #fff;
  transition: all 0.2s;
}

.cairo-search-input-wrap input:focus {
  outline: none;
  border-color: var(--cairo-primary);
  box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.12);
}

.cairo-search-input-wrap button {
  position: absolute;
  right: 4px;
  border-radius: var(--cairo-radius-full);
  padding: 6px 14px;
}

.cairo-course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 28px;
}

.cairo-course-card {
  background: #fff;
  border: 1px solid var(--cairo-gray-200);
  border-radius: var(--cairo-radius-xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--cairo-shadow-sm);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.25s ease;
}

.cairo-course-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--cairo-shadow-lg);
  border-color: var(--cairo-gray-300);
}

.cairo-course-thumb {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #0f172a;
}

.cairo-course-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.cairo-course-card:hover .cairo-course-thumb img {
  transform: scale(1.03);
}

.cairo-thumb-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: #94a3b8;
  background: linear-gradient(135deg, #1e293b, #0f172a);
  font-size: 0.875rem;
  font-weight: 600;
}

.cairo-thumb-placeholder i {
  font-size: 2.25rem;
  color: #38bdf8;
}

.cairo-course-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(6px);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 20px;
  z-index: 2;
}

.cairo-badge-enrolled {
  position: absolute;
  top: 12px;
  right: 12px;
  background: #059669;
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 20px;
  z-index: 2;
  box-shadow: 0 2px 6px rgba(5, 150, 105, 0.4);
}

.cairo-badge-status {
  position: absolute;
  top: 12px;
  right: 12px;
  background: #f59e0b;
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 20px;
  z-index: 2;
  box-shadow: 0 2px 6px rgba(245, 158, 11, 0.4);
}

.cairo-course-body {
  padding: 22px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.cairo-course-title {
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.cairo-course-title a {
  color: var(--cairo-dark);
  text-decoration: none;
  transition: color 0.15s;
}

.cairo-course-title a:hover {
  color: var(--cairo-primary);
}

.cairo-course-excerpt {
  font-size: 0.85rem;
  color: var(--cairo-gray-500);
  line-height: 1.5;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.cairo-course-instructor-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.cairo-instructor-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #eff6ff;
  color: var(--cairo-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  flex-shrink: 0;
}

.cairo-instructor-name {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--cairo-gray-700);
}

.cairo-course-meta-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.cairo-meta-pill {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--cairo-gray-600);
  background: var(--cairo-gray-100);
  padding: 4px 9px;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.cairo-course-footer {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--cairo-gray-100);
}

.cairo-course-pricing-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 12px;
}

.cairo-course-price-box {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.cairo-price {
  font-size: 1.375rem;
  font-weight: 800;
  color: var(--cairo-primary);
}

.cairo-regular-price {
  font-size: 0.875rem;
  color: var(--cairo-gray-400);
  text-decoration: line-through;
}

.cairo-discount-pill {
  font-size: 0.72rem;
  font-weight: 700;
  color: #16a34a;
  background: #dcfce7;
  padding: 3px 8px;
  border-radius: 20px;
}

.cairo-course-actions-row {
  display: flex;
  gap: 8px;
}

/* ==========================================================================
   Single Course Details Page Redesign
   ========================================================================== */
.cairo-single-course-header {
  background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%);
  color: #fff;
  padding: 48px 0;
  position: relative;
  overflow: hidden;
}

.cairo-course-header-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 40px;
  align-items: flex-start;
}

.cairo-breadcrumbs {
  font-size: 0.8125rem;
  color: #94a3b8;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}

.cairo-breadcrumbs a {
  color: #cbd5e1;
  text-decoration: none;
  transition: color 0.15s;
}

.cairo-breadcrumbs a:hover {
  color: #fff;
}

.cairo-breadcrumb-sep {
  color: #64748b;
}

.cairo-breadcrumb-current {
  color: #f8fafc;
  font-weight: 600;
}

.cairo-course-detail-title {
  font-size: 2.25rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.25;
  margin-bottom: 12px;
}

.cairo-course-detail-sub {
  font-size: 1.05rem;
  color: #cbd5e1;
  line-height: 1.6;
  margin-bottom: 20px;
  max-width: 680px;
}

.cairo-course-header-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.875rem;
  color: #e2e8f0;
}

.cairo-header-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.cairo-course-enrollment-card {
  background: #fff;
  border-radius: var(--cairo-radius-xl);
  overflow: hidden;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--cairo-dark);
  position: sticky;
  top: 90px;
  z-index: 10;
}

.cairo-enrollment-card-thumb {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #0f172a;
}

.cairo-enrollment-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cairo-thumb-play-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.35);
  color: #fff;
  font-size: 28px;
  transition: all 0.2s ease;
}

.cairo-thumb-play-overlay:hover {
  background: rgba(0, 0, 0, 0.5);
  transform: scale(1.05);
}

.cairo-enrollment-card-body {
  padding: 24px;
}

.cairo-card-pricing-block {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 12px;
}

.cairo-card-price {
  font-size: 2rem;
  font-weight: 800;
  color: var(--cairo-primary);
}

.cairo-card-regular-price {
  font-size: 1.1rem;
  color: var(--cairo-gray-400);
  text-decoration: line-through;
}

.cairo-card-inclusions {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--cairo-gray-100);
}

.cairo-inclusion-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.825rem;
  color: var(--cairo-gray-600);
}

.cairo-inclusion-list li {
  display: flex;
  align-items: center;
  gap: 10px;
}

.cairo-course-layout-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.cairo-course-description-content {
  line-height: 1.8;
  color: var(--cairo-gray-700);
  font-size: 0.95rem;
}

.cairo-course-description-content p {
  margin-bottom: 1rem;
}

.cairo-learning-outcomes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 14px;
}

.cairo-outcome-item {
  display: flex;
  gap: 12px;
  font-size: 0.875rem;
  color: var(--cairo-gray-700);
  line-height: 1.5;
  background: #f8fafc;
  padding: 14px 16px;
  border-radius: 10px;
  border: 1px solid var(--cairo-gray-100);
}

.cairo-outcome-item i {
  flex-shrink: 0;
  margin-top: 2px;
}

/* Syllabus Accordion */
.cairo-syllabus-accordion {
  border: 1px solid var(--cairo-gray-200);
  border-radius: var(--cairo-radius-lg);
  overflow: hidden;
}

.cairo-syllabus-item {
  border-bottom: 1px solid var(--cairo-gray-200);
}

.cairo-syllabus-item:last-child {
  border-bottom: none;
}

.cairo-syllabus-header {
  width: 100%;
  background: #f8fafc;
  border: none;
  padding: 16px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-family: inherit;
  text-align: left;
  transition: background 0.2s;
}

.cairo-syllabus-header:hover {
  background: #f1f5f9;
}

.cairo-syllabus-item.active .cairo-syllabus-header {
  background: #eff6ff;
  border-bottom: 1px solid #bfdbfe;
}

.cairo-syllabus-item.active .cairo-syllabus-meta i {
  transform: rotate(180deg);
}

.cairo-syllabus-meta i {
  transition: transform 0.2s ease;
}

.cairo-syllabus-body {
  padding: 0 20px;
  background: #fff;
}

.cairo-topic-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.cairo-topic-item {
  padding: 14px 0;
  border-bottom: 1px solid var(--cairo-gray-100);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
}

.cairo-topic-item:last-child {
  border-bottom: none;
}

.cairo-topic-name {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--cairo-gray-800);
  font-weight: 500;
}

.cairo-topic-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.cairo-topic-time {
  font-size: 0.75rem;
  color: var(--cairo-gray-400);
}

.cairo-badge-preview {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--cairo-primary);
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  padding: 3px 10px;
  border-radius: 6px;
  text-decoration: none;
  transition: all 0.15s;
}

.cairo-badge-preview:hover {
  background: var(--cairo-primary);
  color: #fff;
}

.cairo-topic-lock {
  font-size: 0.75rem;
  color: var(--cairo-gray-400);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

/* Features Grid */
.cairo-features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}

.cairo-feature-card {
  background: #f8fafc;
  border: 1px solid var(--cairo-gray-200);
  border-radius: var(--cairo-radius-lg);
  padding: 22px;
}

.cairo-feature-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 14px;
}

.cairo-feature-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--cairo-dark);
  margin-bottom: 6px;
}

.cairo-feature-card p {
  font-size: 0.8125rem;
  color: var(--cairo-gray-500);
  line-height: 1.5;
  margin: 0;
}

/* Instructor Box */
.cairo-instructor-profile-box {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  background: #f8fafc;
  border: 1px solid var(--cairo-gray-200);
  border-radius: var(--cairo-radius-lg);
  padding: 24px;
}

.cairo-instructor-profile-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: #eff6ff;
  color: var(--cairo-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  flex-shrink: 0;
  border: 2px solid #bfdbfe;
}

.cairo-instructor-profile-name {
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--cairo-dark);
  margin-bottom: 2px;
}

.cairo-instructor-badge {
  color: var(--cairo-primary);
  font-weight: 600;
}

/* Mobile Bottom CTA */
.cairo-mobile-bottom-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: #fff;
  border-top: 1px solid var(--cairo-gray-200);
  padding: 12px 16px;
  z-index: 999;
  box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.08);
}

/* ==========================================================================
   5-Step Guided Checkout Wizard
   ========================================================================== */
.cairo-wizard-progress-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #fff;
  padding: 18px 24px;
  border-radius: var(--cairo-radius-xl);
  border: 1px solid var(--cairo-gray-200);
  box-shadow: var(--cairo-shadow-sm);
}

.cairo-wizard-step-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  position: relative;
  z-index: 2;
}

.cairo-step-number {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--cairo-gray-100);
  color: var(--cairo-gray-500);
  font-weight: 700;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--cairo-gray-300);
  transition: all 0.25s ease;
}

.cairo-step-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--cairo-gray-500);
  white-space: nowrap;
  transition: color 0.25s ease;
}

.cairo-wizard-step-node.active .cairo-step-number {
  background: var(--cairo-primary);
  color: #fff;
  border-color: var(--cairo-primary);
  box-shadow: 0 0 0 4px rgba(30, 58, 138, 0.15);
}

.cairo-wizard-step-node.active .cairo-step-label {
  color: var(--cairo-primary);
  font-weight: 700;
}

.cairo-wizard-step-node.completed .cairo-step-number {
  background: #059669;
  color: #fff;
  border-color: #059669;
}

.cairo-wizard-step-node.completed .cairo-step-label {
  color: #059669;
  font-weight: 600;
}

.cairo-wizard-step-line {
  flex: 1;
  height: 3px;
  background: var(--cairo-gray-200);
  margin: 0 10px;
  margin-bottom: 22px;
  transition: background 0.25s ease;
}

.cairo-wizard-step-line.completed {
  background: #059669;
}

.cairo-wizard-pane {
  animation: cairoFadeIn 0.3s ease;
}

@keyframes cairoFadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 991px) {
  .cairo-course-header-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
}

@media (max-width: 768px) {
  .cairo-wizard-progress-bar {
    padding: 12px 14px;
  }
  .cairo-step-label {
    display: none;
  }
  .cairo-wizard-step-line {
    margin-bottom: 0;
  }
  .cairo-mobile-bottom-cta {
    display: block;
  }
  .cairo-course-detail-title {
    font-size: 1.65rem;
  }
  .cairo-instructor-profile-box {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}