/* Computer Basics Page Specific Styles */

/* Main Content Grids */
.computer-basics-grid,
.main-resources-grid,
.resources-grid,
.learning-path-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

.quick-nav-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.parts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
  text-align: center;
}

.featured-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

/* Card Styles */
.basic-concept-card,
.resource-card,
.learning-card,
.part-card {
  background: var(--bg-primary, #fff);
  border-radius: var(--radius-lg, 16px);
  padding: 2rem;
  border: 2px solid var(--border-color, #e5e7eb);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: var(--shadow-sm);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.basic-concept-card:hover,
.resource-card:hover,
.learning-card:hover,
.part-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-color, #46bbe5);
}

.concept-icon {
  width: 70px;
  height: 70px;
  border-radius: var(--radius-lg, 16px);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin-bottom: 1.5rem;
  background: linear-gradient(
    135deg,
    var(--primary-color, #46bbe5),
    var(--primary-dark, #0d4f66)
  );
  color: white;
  box-shadow: 0 4px 15px rgba(70, 187, 229, 0.3);
}

.card-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  color: var(--primary-color, #46bbe5);
}

.basic-concept-card h3,
.part-card h4 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary, #1f2937);
  margin-bottom: 1rem;
}

.basic-concept-card p,
.part-card p {
  color: var(--text-secondary, #6b7280);
  line-height: 1.7;
  flex-grow: 1;
}

/* Computer Parts Section */
.computer-parts-section {
  background: var(--bg-secondary, #f9fafb);
  padding: 3rem 2rem;
  margin: 3rem 0;
  border-radius: var(--radius-xl, 24px);
  border: 1px solid var(--border-color, #e5e7eb);
}

.subsection-title {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-primary, #1f2937);
  margin-bottom: 2rem;
  text-align: center;
  position: relative;
  padding-bottom: 1rem;
}

.subsection-title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: linear-gradient(
    90deg,
    var(--primary-color, #46bbe5),
    var(--secondary-color, #10b981)
  );
  border-radius: 2px;
}

/* Learning Path Cards */
.learning-card {
  background: var(--bg-primary, #fff);
  border-radius: var(--radius-lg, 16px);
  padding: 2rem;
  border: 2px solid var(--border-color, #e5e7eb);
  transition: all 0.3s ease;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.learning-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #667eea, #764ba2);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.learning-card:hover::before {
  transform: scaleX(1);
}

.learning-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-2xl);
  border-color: #667eea;
}

.learning-card.featured {
  border-color: var(--accent-color, #f59e0b);
  background: linear-gradient(
    135deg,
    rgba(245, 158, 11, 0.05),
    rgba(217, 119, 6, 0.05)
  );
}

.learning-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.learning-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md, 12px);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: white;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  flex-shrink: 0;
}

.learning-icon.computer-icon {
  background: linear-gradient(135deg, #3b82f6, #2563eb);
}

.learning-icon.internet-icon {
  background: linear-gradient(135deg, #10b981, #059669);
}

.learning-icon.coding-icon {
  background: linear-gradient(135deg, #8b5cf6, #7c3aed);
}

.learning-info h3 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary, #1f2937);
  margin-bottom: 0.5rem;
}

.level-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full, 50px);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.level-badge.beginner {
  background: rgba(16, 185, 129, 0.1);
  color: var(--secondary-color, #10b981);
}

.level-badge.intermediate {
  background: rgba(245, 158, 11, 0.1);
  color: var(--accent-color, #f59e0b);
}

.level-badge.advanced {
  background: rgba(139, 92, 246, 0.1);
  color: #8b5cf6;
}

.learning-description {
  color: var(--text-secondary, #6b7280);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.learning-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.learning-highlights .highlight {
  padding: 0.4rem 0.8rem;
  background: var(--bg-secondary, #f9fafb);
  border: 1px solid var(--border-color, #e5e7eb);
  border-radius: var(--radius, 8px);
  font-size: 0.85rem;
  color: var(--text-secondary, #6b7280);
  font-weight: 500;
}

.learn-more-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 1.5rem;
  background: var(--primary-color, #46bbe5);
  color: white;
  text-decoration: none;
  border-radius: var(--radius-full, 50px);
  font-weight: 600;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(70, 187, 229, 0.3);
  font-size: 0.95rem;
}

.learn-more-btn:hover {
  background: var(--primary-hover, #05425c);
  transform: translateX(5px);
  box-shadow: 0 6px 20px rgba(70, 187, 229, 0.4);
}

.brand-header {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 2rem;
  text-align: center;
  background: linear-gradient(135deg, var(--primary-color), #667eea);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Safety Cards */
.safety-section {
  background: linear-gradient(
    135deg,
    rgba(16, 185, 129, 0.1),
    rgba(5, 150, 105, 0.1)
  );
  padding: 4rem 2rem;
  border-radius: var(--radius-xl, 24px);
  margin: 3rem 0;
  border: 2px solid rgba(16, 185, 129, 0.2);
}

.safety-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.safety-card {
  background: var(--bg-primary, #fff);
  border-radius: var(--radius-lg, 16px);
  padding: 2rem;
  border: 2px solid var(--border-color, #e5e7eb);
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
  text-align: center;
}

.safety-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--secondary-color, #10b981);
}

.safety-icon {
  width: 70px;
  height: 70px;
  margin: 0 auto 1.5rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  background: linear-gradient(
    135deg,
    var(--secondary-color, #10b981),
    var(--secondary-hover, #059669)
  );
  color: white;
  box-shadow: 0 4px 20px rgba(16, 185, 129, 0.4);
}

.safety-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary, #1f2937);
  margin-bottom: 1rem;
}

.safety-card p {
  color: var(--text-secondary, #6b7280);
  line-height: 1.7;
  margin: 0;
}

/* Stats Section */
.stats-section {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  padding: 4rem 2rem;
  border-radius: var(--radius-xl, 24px);
  margin: 3rem 0;
  color: white;
  box-shadow: 0 20px 60px rgba(102, 126, 234, 0.4);
}

.stats-section .section-title {
  color: white;
  -webkit-text-fill-color: white;
}

.stats-section .stat-item {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-lg, 16px);
  padding: 2rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: all 0.3s ease;
}

.stats-section .stat-item:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-5px);
}

.stats-section .stat-number {
  font-size: 3rem;
  font-weight: 800;
  display: block;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, #fff, rgba(255, 255, 255, 0.8));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stats-section .stat-label {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.9);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 500;
}

/* CTA Section */
.cta-section {
  background: linear-gradient(135deg, var(--primary-color, #46bbe5), #667eea);
  color: white;
  padding: 4rem 2rem;
  border-radius: var(--radius-xl, 24px);
  text-align: center;
  margin: 3rem 0;
  box-shadow: 0 20px 60px rgba(70, 187, 229, 0.4);
}

.cta-section h2 {
  font-size: 2.5rem;
  font-weight: 800;
  color: white;
  margin-bottom: 1rem;
}

.cta-section p {
  font-size: 1.2rem;
  color: rgba(255, 255, 255, 0.95);
  margin-bottom: 2rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 2rem;
}

.cta-buttons .btn {
  padding: 1.25rem 2.5rem;
  font-size: 1.1rem;
  font-weight: 600;
  border-radius: var(--radius-full, 50px);
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.cta-buttons .btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 25px rgba(0, 0, 0, 0.3);
}

.cta-buttons .btn-secondary {
  background: white;
  color: var(--primary-color, #46bbe5);
}

.cta-buttons .btn-secondary:hover {
  background: var(--bg-secondary, #f9fafb);
}

/* Featured Content Section */
.featured-content {
  background: var(--bg-secondary, #f9fafb);
  padding: 4rem 2rem;
  border-radius: var(--radius-xl, 24px);
  margin: 3rem 0;
  border: 1px solid var(--border-color, #e5e7eb);
}

.featured-category {
  background: var(--bg-primary, #fff);
  border-radius: var(--radius-lg, 16px);
  padding: 2rem;
  border: 2px solid var(--border-color, #e5e7eb);
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
}

.featured-category:hover {
  border-color: var(--primary-color, #46bbe5);
  box-shadow: var(--shadow-lg);
}

.featured-category .category-header {
  margin-bottom: 1.5rem;
  text-align: left;
}

.featured-category .category-header h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary, #1f2937);
  margin: 1rem 0 0.5rem;
}

.featured-category .category-header p {
  color: var(--text-secondary, #6b7280);
  font-size: 0.95rem;
}

.featured-links {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.featured-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: var(--bg-secondary, #f9fafb);
  border: 1px solid var(--border-color, #e5e7eb);
  border-radius: var(--radius, 8px);
  text-decoration: none;
  transition: all 0.3s ease;
}

.featured-link:hover {
  background: var(--bg-primary, #fff);
  border-color: var(--primary-color, #46bbe5);
  transform: translateX(5px);
  box-shadow: var(--shadow-md);
}

.featured-link i {
  font-size: 1.5rem;
  color: var(--primary-color, #46bbe5);
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(70, 187, 229, 0.1);
  border-radius: var(--radius, 8px);
}

.featured-link div {
  flex: 1;
}

.featured-link strong {
  display: block;
  color: var(--text-primary, #1f2937);
  font-weight: 600;
  margin-bottom: 0.25rem;
  font-size: 1rem;
}

.featured-link span {
  display: block;
  color: var(--text-secondary, #6b7280);
  font-size: 0.85rem;
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--bg-secondary, #f9fafb);
  border: 1px solid var(--border-color, #e5e7eb);
  color: var(--text-primary, #1f2937);
  border-radius: var(--radius-full, 50px);
  font-size: 0.85rem;
  font-weight: 600;
}

/* Category Icons */
.category-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md, 12px);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 1rem;
  color: white;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.grammar-category {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.vocabulary-category {
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.coding-category {
  background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.business-category {
  background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

/* Utility Classes */
.text-center {
  text-align: center;
}

.mb-0 {
  margin-bottom: 0;
}
.mb-1 {
  margin-bottom: 0.5rem;
}
.mb-2 {
  margin-bottom: 1rem;
}
.mb-3 {
  margin-bottom: 1.5rem;
}
.mb-4 {
  margin-bottom: 2rem;
}

.mt-0 {
  margin-top: 0;
}
.mt-1 {
  margin-top: 0.5rem;
}
.mt-2 {
  margin-top: 1rem;
}
.mt-3 {
  margin-top: 1.5rem;
}
.mt-4 {
  margin-top: 2rem;
}

/* Scroll Progress Indicator */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 4px;
  background: linear-gradient(
    90deg,
    var(--primary-color, #46bbe5),
    var(--secondary-color, #10b981)
  );
  z-index: 9999;
  transition: width 0.3s ease;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--primary-color, #46bbe5);
  color: white;
  padding: 0.5rem 1rem;
  text-decoration: none;
  border-radius: 0 0 var(--radius, 8px) 0;
  font-weight: 600;
  z-index: 10000;
}

.skip-link:focus {
  top: 0;
}

/* Loading States */
.loading {
  opacity: 0.6;
  pointer-events: none;
}

.loaded .hero,
.loaded .section {
  animation: fadeInUp 0.8s ease forwards;
}

/* Focus Styles for Accessibility */
*:focus-visible {
  outline: 3px solid var(--primary-color, #46bbe5);
  outline-offset: 2px;
  border-radius: var(--radius-sm, 4px);
}

button:focus-visible,
a:focus-visible {
  outline-offset: 4px;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .section-title {
    font-size: 2rem;
  }

  .section-subtitle {
    font-size: 1.1rem;
  }

  .hero-stats {
    gap: 1.5rem;
  }

  .stat-number {
    font-size: 1.8rem;
  }
}

@media (max-width: 768px) {
  .computer-basics-grid,
  .main-resources-grid,
  .resources-grid,
  .learning-path-grid,
  .featured-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .quick-nav-grid,
  .parts-grid,
  .stats-grid,
  .safety-cards {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .section {
    padding: 3rem 0;
  }

  .section-title {
    font-size: 1.8rem;
  }

  .section-subtitle {
    font-size: 1rem;
    margin-bottom: 2rem;
  }

  .category-header,
  .section-header {
    font-size: 1.5rem;
  }

  .brand-header {
    font-size: 2rem;
  }

  .cta-section {
    padding: 3rem 1.5rem;
  }

  .cta-section h2 {
    font-size: 2rem;
  }

  .cta-section p {
    font-size: 1rem;
  }

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

  .cta-buttons .btn {
    width: 100%;
    justify-content: center;
  }

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

  .hero-btn {
    width: 100%;
    justify-content: center;
  }

  .hero-stats {
    gap: 1rem;
    flex-direction: column;
    align-items: center;
  }

  .stat-number {
    font-size: 1.5rem;
  }

  .stat-label {
    font-size: 0.85rem;
  }

  .basic-concept-card,
  .resource-card,
  .learning-card,
  .part-card {
    padding: 1.5rem;
  }

  .concept-icon {
    width: 60px;
    height: 60px;
    font-size: 1.8rem;
  }

  .basic-concept-card h3,
  .part-card h4 {
    font-size: 1.2rem;
  }

  .learning-icon {
    width: 50px;
    height: 50px;
    font-size: 1.5rem;
  }

  .learning-info h3 {
    font-size: 1.2rem;
  }

  .resource-features {
    grid-template-columns: 1fr;
  }

  .computer-parts-section {
    padding: 2rem 1.5rem;
  }

  .subsection-title {
    font-size: 1.5rem;
  }

  .resources-section,
  .featured-content,
  .safety-section,
  .stats-section {
    padding: 3rem 1.5rem;
  }

  .featured-link {
    padding: 0.875rem;
  }

  .featured-link i {
    font-size: 1.3rem;
    width: 35px;
    height: 35px;
  }

  .featured-link strong {
    font-size: 0.95rem;
  }

  /* Timeline responsive */
  .timeline-item {
    grid-template-columns: 1fr !important;
    text-align: center !important;
  }

  .timeline-line {
    left: 20px !important;
    transform: none !important;
  }

  .timeline-marker {
    position: absolute;
    left: 0;
  }

  .timeline-content {
    text-align: left !important;
    margin-left: 60px;
  }

  .timeline-spacer {
    display: none;
  }
}

@media (max-width: 480px) {
  .section-title {
    font-size: 1.5rem;
  }

  .section-subtitle {
    font-size: 0.9rem;
  }

  .cta-section h2 {
    font-size: 1.5rem;
  }

  .basic-concept-card,
  .resource-card,
  .learning-card,
  .part-card {
    padding: 1.25rem;
  }

  .concept-icon {
    width: 50px;
    height: 50px;
    font-size: 1.5rem;
  }

  .stats-section .stat-number {
    font-size: 2rem;
  }

  .stats-section .stat-label {
    font-size: 0.85rem;
  }
}

/* Print Styles */
@media print {
  .hero,
  .cta-section,
  .animate-on-scroll {
    page-break-inside: avoid;
  }

  .basic-concept-card,
  .resource-card,
  .learning-card {
    border: 1px solid #000;
    box-shadow: none;
  }

  .hero-btn,
  .resource-btn,
  .learn-more-btn {
    border: 1px solid #000;
  }
}

/* Hero Section Specific Styles */
.hero {
  position: relative;
  min-height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4rem 2rem;
  overflow: hidden;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  opacity: 0.3;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  text-align: center;
  color: white;
}

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
  font-size: 1.3rem;
  line-height: 1.7;
  margin-bottom: 2rem;
  color: rgba(255, 255, 255, 0.95);
  text-shadow: 0 1px 5px rgba(0, 0, 0, 0.1);
}

.hero-cta {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
  flex-wrap: wrap;
  justify-content: center;
}

.hero-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1.25rem 2.5rem;
  background: white;
  color: #667eea;
  text-decoration: none;
  border-radius: var(--radius-full, 50px);
  font-weight: 600;
  font-size: 1.1rem;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.hero-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.hero-btn-outline {
  background: transparent;
  border: 2px solid white;
  color: white;
  box-shadow: 0 4px 15px rgba(255, 255, 255, 0.2);
}

.hero-btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  box-shadow: 0 4px 15px rgba(255, 255, 255, 0.3);
}

.hero-stats {
  display: flex;
  gap: 2rem;
  margin-top: 3rem;
  justify-content: center;
  flex-wrap: wrap;
}

.stat-item {
  text-align: center;
  padding: 1rem;
}

.stat-number {
  display: block;
  font-size: 2.5rem;
  font-weight: 800;
  color: white;
  margin-bottom: 0.5rem;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.stat-label {
  display: block;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.9);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 500;
}

/* Section Styles */
.section {
  padding: 4rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 1rem;
  color: var(--text-primary, #1f2937);
  position: relative;
  padding-bottom: 1rem;
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(
    90deg,
    var(--primary-color, #46bbe5),
    var(--secondary-color, #10b981)
  );
  border-radius: 2px;
}

.section-subtitle {
  font-size: 1.2rem;
  text-align: center;
  color: var(--text-secondary, #6b7280);
  margin-bottom: 3rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

/* Quick Nav Section */
.quick-nav-section {
  padding: 3rem 2rem;
  background: transparent;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Main Content */
.main-content {
  padding: 2rem 0;
  background: var(--bg-primary, #fff);
}

/* Resources Section */
.resources-section {
  background: var(--bg-secondary, #f9fafb);
  padding: 4rem 2rem;
  border-radius: var(--radius-xl, 24px);
  margin: 2rem 0;
  border: 1px solid var(--border-color, #e5e7eb);
}

/* Main Resource Cards */
.main-resource-card {
  background: var(--bg-primary, #fff);
  border-radius: var(--radius-lg, 16px);
  padding: 2rem;
  border: 2px solid var(--border-color, #e5e7eb);
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.main-resource-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(
    90deg,
    var(--primary-color, #46bbe5),
    var(--secondary-color, #10b981)
  );
  opacity: 0;
  transition: opacity 0.3s ease;
}

.main-resource-card:hover::before {
  opacity: 1;
}

.main-resource-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-color, #46bbe5);
}

.main-resource-card.current {
  border-color: var(--primary-color, #46bbe5);
  background: linear-gradient(
    135deg,
    rgba(70, 187, 229, 0.05),
    rgba(16, 185, 129, 0.05)
  );
}

.resource-header {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.resource-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md, 12px);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  background: linear-gradient(
    135deg,
    var(--primary-color, #46bbe5),
    var(--primary-dark, #0d4f66)
  );
  color: white;
  box-shadow: 0 4px 15px rgba(70, 187, 229, 0.3);
  flex-shrink: 0;
}

.resource-info {
  flex: 1;
  min-width: 0;
}

.resource-info h3 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary, #1f2937);
  margin: 0 0 0.5rem 0;
}

.fun-level {
  display: inline-block;
  padding: 0.4rem 0.8rem;
  background: linear-gradient(
    135deg,
    var(--accent-color, #f59e0b),
    var(--accent-hover, #d97706)
  );
  color: white;
  border-radius: var(--radius-full, 50px);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.resource-badge {
  padding: 0.5rem 1rem;
  background: linear-gradient(
    135deg,
    var(--primary-color, #46bbe5),
    var(--secondary-color, #10b981)
  );
  color: white;
  border-radius: var(--radius-full, 50px);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  flex-shrink: 0;
}

.main-resource-card h3 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-primary, #1f2937);
  margin-bottom: 1rem;
}

.main-resource-card p,
.resource-description {
  color: var(--text-secondary, #6b7280);
  line-height: 1.7;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

/* Resource Features - both grid and list versions */
.resource-features {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  list-style: none;
  padding: 0;
}

.resource-features.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
}

.resource-features .feature,
.resource-features li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  color: var(--text-secondary, #6b7280);
}

.resource-features .feature i,
.resource-features li i {
  color: var(--secondary-color, #10b981);
  font-size: 1rem;
  flex-shrink: 0;
}

.resource-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem 1.5rem;
  background: var(--primary-color, #46bbe5);
  color: white;
  text-decoration: none;
  border-radius: var(--radius-full, 50px);
  font-weight: 600;
  transition: all 0.3s ease;
  text-align: center;
  box-shadow: 0 4px 15px rgba(70, 187, 229, 0.3);
  margin-top: auto;
}

.resource-btn:hover {
  background: var(--primary-hover, #05425c);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(70, 187, 229, 0.4);
}

/* Fun Card Variant */
.fun-card {
  border: 2px solid var(--border-color, #e5e7eb);
  background: var(--bg-primary, #fff);
}

.fun-card:hover {
  border-color: var(--accent-color, #f59e0b);
  box-shadow: 0 10px 30px rgba(245, 158, 11, 0.2);
}

/* Quick Navigation Cards */
.quick-nav-card {
  background: var(--bg-primary, #fff);
  border-radius: var(--radius-lg, 16px);
  padding: 2rem;
  text-decoration: none;
  border: 2px solid var(--border-color, #e5e7eb);
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1rem;
  position: relative;
  overflow: hidden;
}

.quick-nav-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(
    90deg,
    var(--primary-color, #46bbe5),
    var(--secondary-color, #10b981)
  );
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.quick-nav-card:hover::before {
  transform: scaleX(1);
}

.quick-nav-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-color, #46bbe5);
}

.quick-nav-card .nav-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md, 12px);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: white;
  transition: all 0.3s ease;
}

.quick-nav-card.home-card .nav-icon {
  background: linear-gradient(
    135deg,
    var(--primary-color, #46bbe5),
    var(--primary-dark, #0d4f66)
  );
}

.quick-nav-card.grammar-card .nav-icon {
  background: linear-gradient(135deg, #667eea, #764ba2);
}

.quick-nav-card.vocab-card .nav-icon {
  background: linear-gradient(135deg, #10b981, #059669);
}

.quick-nav-card.business-card .nav-icon {
  background: linear-gradient(135deg, #f59e0b, #d97706);
}

.quick-nav-card:hover .nav-icon {
  transform: scale(1.1) rotate(5deg);
}

.quick-nav-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary, #1f2937);
  margin: 0;
}

.quick-nav-card p {
  font-size: 0.95rem;
  color: var(--text-secondary, #6b7280);
  margin: 0;
}

/* Headers */
.category-header,
.section-header {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--text-primary, #1f2937);
  text-align: center;
}

@media (max-width: 768px) {
  .hero-cta {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-btn {
    width: 100%;
    justify-content: center;
  }

  .hero-stats {
    gap: 1rem;
  }

  .stat-number {
    font-size: 1.5rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .section-subtitle {
    font-size: 1rem;
  }
}