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

/* Color variables and theme settings */
:root {
  /* Font Family definitions */
  --font-heading: 'Outfit', 'Hind Siliguri', sans-serif;
  --font-body: 'Inter', 'Hind Siliguri', sans-serif;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  /* Border radius definitions */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.12);
}

/* Light Theme Variables */
[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --bg-glass: rgba(255, 255, 255, 0.75);
  --bg-glass-card: rgba(255, 255, 255, 0.65);
  
  --border-light: rgba(148, 163, 184, 0.15);
  --border-glow: rgba(37, 99, 235, 0.2);

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-tertiary: #64748b;

  --color-primary: #2563eb;
  --color-primary-rgb: 37, 99, 235;
  --color-secondary: #4f46e5;
  --color-accent: #06b6d4;
  --color-gradient-start: #3b82f6;
  --color-gradient-end: #6366f1;

  --badge-bg: rgba(37, 99, 235, 0.1);
  --badge-text: #2563eb;

  --glow-shadow: 0 0 20px rgba(37, 99, 235, 0.15);
}

/* Dark Theme Variables (Default) */
[data-theme="dark"] {
  --bg-primary: #090d16;
  --bg-secondary: #0f172a;
  --bg-tertiary: #1e293b;
  --bg-glass: rgba(15, 23, 42, 0.7);
  --bg-glass-card: rgba(30, 41, 59, 0.5);

  --border-light: rgba(255, 255, 255, 0.06);
  --border-glow: rgba(99, 102, 241, 0.25);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-tertiary: #64748b;

  --color-primary: #3b82f6;
  --color-primary-rgb: 59, 130, 246;
  --color-secondary: #6366f1;
  --color-accent: #22d3ee;
  --color-gradient-start: #2563eb;
  --color-gradient-end: #8b5cf6;

  --badge-bg: rgba(99, 102, 241, 0.15);
  --badge-text: #a5b4fc;

  --glow-shadow: 0 0 25px rgba(99, 102, 241, 0.25);
}

/* Reset and Global Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: background-color var(--transition-normal), color var(--transition-normal);
  overflow-x: hidden;
  min-height: 100vh;
  line-height: 1.5; /* Reduced from 1.6 for tighter reading flow */
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2; /* Reduced from 1.25 */
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-tertiary);
}

/* Premium Layout Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Decorative Background Elements */
.bg-glow-1 {
  position: absolute;
  top: -10%;
  right: -5%;
  width: 50vw;
  height: 50vw;
  background: radial-gradient(circle, rgba(var(--color-primary-rgb), 0.12) 0%, rgba(0, 0, 0, 0) 70%);
  z-index: -1;
  pointer-events: none;
  filter: blur(80px);
}

.bg-glow-2 {
  position: absolute;
  top: 40%;
  left: -10%;
  width: 60vw;
  height: 60vw;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.08) 0%, rgba(0, 0, 0, 0) 70%);
  z-index: -1;
  pointer-events: none;
  filter: blur(100px);
}

/* Header & Glassmorphic Navigation */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-light);
  transition: background var(--transition-normal), border var(--transition-normal);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.5rem;
  font-weight: 800;
  font-family: var(--font-heading);
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  cursor: pointer;
}

.logo img {
  height: 40px;
  width: auto;
  object-fit: contain;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text-secondary);
  position: relative;
  padding: 8px 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-gradient-start), var(--color-gradient-end));
  transition: width var(--transition-fast);
  border-radius: var(--radius-full);
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-links a.active {
  color: var(--text-primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Control Buttons & Mode Toggles */
.btn-icon {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-light);
  color: var(--text-primary);
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-icon:hover {
  background: var(--text-primary);
  color: var(--bg-primary);
  transform: translateY(-2px);
}

.theme-toggle .fa-sun {
  display: none;
}

[data-theme="light"] .theme-toggle .fa-sun {
  display: block;
}

[data-theme="light"] .theme-toggle .fa-moon {
  display: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
  color: #ffffff;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 10px 24px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(var(--color-primary-rgb), 0.2);
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(var(--color-primary-rgb), 0.35);
}

.btn-primary:active {
  transform: translateY(0);
}

/* Mobile Hamburger Menu */
.menu-btn {
  display: none;
  font-size: 1.25rem;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
}

/* Hero Section */
.hero {
  position: relative;
  padding: 110px 0 60px; /* Reduced from 160px/100px to bring content higher */
  text-align: center;
  overflow: hidden;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--badge-bg);
  color: var(--badge-text);
  padding: 8px 18px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
  border: 1px solid var(--border-glow);
  letter-spacing: 0.5px;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.hero-title span {
  background: linear-gradient(135deg, var(--color-gradient-start) 20%, var(--color-gradient-end) 80%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 650px;
  margin: 0 auto 24px; /* Reduced from 40px */
  line-height: 1.5; /* Reduced from 1.6 */
}

/* Search and Filters Hub */
.search-filter-box {
  background: var(--bg-glass-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 18px; /* Reduced from 24px */
  box-shadow: var(--shadow-md);
  max-width: 900px;
  margin: 0 auto 35px; /* Reduced from 60px */
  position: relative;
  z-index: 10;
}

.search-bar {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
}

.search-input-wrapper {
  position: relative;
  flex: 1;
}

.search-input-wrapper i {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-tertiary);
}

.search-input {
  width: 100%;
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  color: var(--text-primary);
  padding: 14px 18px 14px 48px;
  border-radius: var(--radius-md);
  font-size: 1rem;
  outline: none;
  transition: all var(--transition-fast);
}

.search-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), 0.15);
}

.category-filters {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
}

.filter-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  color: var(--text-secondary);
  padding: 8px 18px;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  border-color: var(--text-tertiary);
  color: var(--text-primary);
}

.filter-btn.active {
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
  border-color: transparent;
  color: #ffffff;
  box-shadow: var(--glow-shadow);
}

/* Academy Stat Numbers */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 45px; /* Reduced from 80px */
}

.stat-card {
  background: var(--bg-glass-card);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  transition: transform var(--transition-fast), border var(--transition-fast);
}

.stat-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-glow);
}

.stat-number {
  font-size: 2.25rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Course Section */
.section-header {
  text-align: center;
  margin-bottom: 30px; /* Reduced from 50px */
}

.section-title {
  font-size: 2.25rem;
  margin-bottom: 12px;
}

.section-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 30px;
  margin-bottom: 45px; /* Reduced from 80px */
}

/* Premium Card Architecture */
.course-card {
  background: var(--bg-glass-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
  position: relative;
}

.course-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-gradient-start), var(--color-gradient-end));
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.course-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-lg), 0 10px 20px rgba(var(--color-primary-rgb), 0.05);
}

.course-card:hover::before {
  opacity: 1;
}

.course-image-wrapper {
  position: relative;
  height: 200px;
  overflow: hidden;
  background: var(--bg-tertiary);
}

.course-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.course-card:hover .course-image {
  transform: scale(1.06);
}

.course-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.course-content {
  padding: 18px; /* Reduced from 24px */
  display: flex;
  flex-direction: column;
  flex: 1;
}

.course-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px; /* Reduced from 12px */
  font-size: 0.8rem;
  color: var(--text-tertiary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.course-category {
  color: var(--color-primary);
}

.course-title {
  font-size: 1.2rem; /* Reduced from 1.25rem */
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 8px; /* Reduced from 12px */
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 2.7em;
}

.course-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.45;
  margin-bottom: 14px; /* Reduced from 20px */
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.course-info-row {
  display: flex;
  align-items: center;
  gap: 14px;
  border-top: 1px solid var(--border-light);
  padding-top: 12px; /* Reduced from 16px */
  margin-bottom: 14px; /* Reduced from 20px */
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.course-info-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.course-info-item i {
  color: var(--color-primary);
}

.course-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.course-price {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
}

.course-price.free {
  color: var(--color-accent);
}

.course-btn {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-light);
  color: var(--text-primary);
  padding: 8px 18px;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.course-btn:hover {
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
  border-color: transparent;
  color: #ffffff;
  transform: translateY(-1px);
}

/* Feature Showcase */
.features-section {
  padding: 45px 0; /* Reduced from 80px */
  position: relative;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-glass-card);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 24px 18px; /* Reduced from 36px/24px */
  text-align: center;
  transition: all var(--transition-fast);
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-md);
}

.feature-icon-box {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  background: var(--badge-bg);
  color: var(--badge-text);
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  border: 1px solid var(--border-glow);
}

.feature-title {
  font-size: 1.25rem;
  margin-bottom: 12px;
}

.feature-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* Testimonials / Student Success Section */
.testimonials {
  padding: 45px 0; /* Reduced from 80px */
  position: relative;
}

.testimonial-slider-container {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  overflow: hidden;
}

.testimonial-track {
  display: flex;
  transition: transform var(--transition-normal);
}

.testimonial-slide {
  min-width: 100%;
  padding: 16px; /* Reduced from 24px */
  box-sizing: border-box;
}

.testimonial-card {
  background: var(--bg-glass-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 24px 30px; /* Reduced from 40px */
  text-align: center;
  box-shadow: var(--shadow-sm);
  position: relative;
}

.testimonial-card::before {
  content: '"';
  position: absolute;
  top: 10px;
  left: 30px;
  font-size: 8rem;
  font-family: Georgia, serif;
  color: var(--border-light);
  line-height: 1;
}

.testimonial-text {
  font-size: 1.15rem;
  font-style: italic;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 24px;
  position: relative;
  z-index: 2;
}

.testimonial-author {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.testimonial-avatar {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-full);
  border: 2px solid var(--color-primary);
  object-fit: cover;
}

.testimonial-name {
  font-weight: 700;
  font-size: 1rem;
}

.testimonial-role {
  font-size: 0.85rem;
  color: var(--text-tertiary);
  font-weight: 500;
}

.testimonial-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 24px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
  background: var(--bg-tertiary);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.dot.active {
  background: var(--color-primary);
  width: 24px;
}

/* Contact Us Section */
.contact-section {
  padding: 45px 0; /* Reduced from 80px */
  position: relative;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 40px;
  background: var(--bg-glass-card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 30px; /* Reduced from 50px */
  box-shadow: var(--shadow-lg);
}

.contact-info {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.contact-info-title {
  font-size: 2rem;
  margin-bottom: 16px;
}

.contact-info-desc {
  color: var(--text-secondary);
  margin-bottom: 30px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-item-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--badge-bg);
  color: var(--badge-text);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
  border: 1px solid var(--border-glow);
}

.contact-item-content h4 {
  font-size: 0.95rem;
  margin-bottom: 4px;
  color: var(--text-secondary);
}

.contact-item-content p, 
.contact-item-content a {
  font-size: 1rem;
  font-weight: 600;
}

.social-links {
  display: flex;
  gap: 12px;
  margin-top: 30px;
}

.social-btn {
  width: 40px;
  height: 40px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.social-btn:hover {
  background: var(--color-primary);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(var(--color-primary-rgb), 0.2);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-input {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  color: var(--text-primary);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  outline: none;
  transition: all var(--transition-fast);
  font-size: 0.95rem;
}

.form-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), 0.15);
}

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

/* Footer Section */
footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-light);
  padding: 40px 0 20px; /* Reduced from 60px/30px */
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 30px;
  margin-bottom: 30px; /* Reduced from 40px */
}

.footer-brand h3 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
  max-width: 320px;
}

.footer-links h4 {
  font-size: 1rem;
  margin-bottom: 16px;
}

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

.footer-links a {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.footer-links a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  border-top: 1px solid var(--border-light);
  padding-top: 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-tertiary);
}

/* Notification Popups (Toast UI) */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-glow);
  color: var(--text-primary);
  padding: 16px 24px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 2000;
  display: flex;
  align-items: center;
  gap: 12px;
  transform: translateY(150px);
  transition: transform var(--transition-normal);
}

.toast.show {
  transform: translateY(0);
}

.toast-icon {
  color: #10b981;
  font-size: 1.2rem;
}

/* Mobile Responsiveness Rules */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 2.75rem;
  }
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .contact-grid {
    grid-template-columns: 1fr;
    padding: 30px;
    gap: 30px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .menu-btn {
    display: block;
  }
  #header-cta-btn {
    display: none; /* Hide Browse Courses button in mobile header to prevent overlap */
  }
  .logo {
    font-size: 1.25rem;
    gap: 8px;
  }
  .logo img {
    height: 32px;
  }
  .hero {
    padding: 120px 0 60px;
  }
  .hero-title {
    font-size: 2.25rem;
  }
  .subpage-hero {
    padding: 120px 0 40px;
  }
  .subpage-title {
    font-size: 2.25rem;
  }
  .stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .courses-grid {
    grid-template-columns: 1fr;
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
  
  /* Mobile nav menu when active */
  .nav-links.mobile-active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 80px;
    left: 0;
    width: 100%;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-light);
    padding: 24px;
    gap: 18px;
    box-shadow: var(--shadow-md);
    z-index: 1001; /* Ensure menu overlay is always on top */
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.85rem;
  }
  .hero-subtitle {
    font-size: 1rem;
  }
  .subpage-title {
    font-size: 1.75rem;
  }
  .stats {
    grid-template-columns: 1fr; /* 1 column grid for stats on narrow screens to prevent text overlap */
    gap: 12px;
  }
  .section-title {
    font-size: 1.75rem;
  }
  .contact-grid {
    padding: 20px 16px;
  }
}

/* Subpage Hero & Main Layout Styles */
.subpage-hero {
  padding: 110px 0 40px; /* Reduced from 140px/60px */
  text-align: center;
  position: relative;
  overflow: hidden;
}

.subpage-title {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.subpage-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Instructors Page Layout */
.instructors-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 30px;
  margin-bottom: 80px;
}

.instructor-card {
  background: var(--bg-glass-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  text-align: center;
  transition: all var(--transition-normal);
}

.instructor-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-lg);
}

.instructor-image {
  width: 120px;
  height: 120px;
  border-radius: var(--radius-full);
  border: 3px solid var(--color-primary);
  object-fit: cover;
  margin: 0 auto 20px;
  box-shadow: var(--shadow-sm);
}

.instructor-name {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.instructor-role {
  font-size: 0.85rem;
  color: var(--color-primary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 16px;
}

.instructor-bio {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 20px;
}

/* Student Success Stories Grid */
.success-stories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 30px;
  margin-bottom: 80px;
}

.success-story-card {
  background: var(--bg-glass-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 30px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-normal);
}

.success-story-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-lg);
}

.success-quote {
  font-size: 1rem;
  font-style: italic;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 24px;
  position: relative;
}

.success-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid var(--border-light);
  padding-top: 16px;
}

.success-avatar {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-full);
  object-fit: cover;
  border: 2px solid var(--color-primary);
}

.success-name {
  font-weight: 700;
  font-size: 0.95rem;
}

.success-job {
  font-size: 0.8rem;
  color: var(--text-tertiary);
}