@import url('https://cdn.jsdelivr.net/npm/tailwindcss@2.2.19/dist/tailwind.min.css');
@import url('https://cdn.jsdelivr.net/npm/remixicon@2.5.0/fonts/remixicon.css');

:root {
  --primary-color: #6B4E9C;
  --primary-dark: #543C7C;
  --primary-light: #8B6EBC;
  --secondary-color: #E89C3F;
  --secondary-dark: #D68827;
  --secondary-light: #F4B868;
  --accent-color: #4ECDC4;
  --accent-dark: #3EADA5;
  --accent-light: #7FE0D9;
  --text-primary: #2D3748;
  --text-secondary: #4A5568;
  --text-light: #718096;
  --background-primary: #FFFFFF;
  --background-secondary: #F7FAFC;
  --background-accent: #FFF8F0;
  --border-color: #E2E8F0;
  --success-color: #48BB78;
  --warning-color: #ED8936;
  --error-color: #F56565;
  --shadow-sm: 0 2px 4px rgba(107, 78, 156, 0.08);
  --shadow-md: 0 4px 12px rgba(107, 78, 156, 0.12);
  --shadow-lg: 0 10px 30px rgba(107, 78, 156, 0.15);
  --shadow-xl: 0 20px 40px rgba(107, 78, 156, 0.2);
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  color: var(--text-primary);
  background-color: var(--background-primary);
  line-height: 1.6;
}

.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--background-primary);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.header.scrolled {
  box-shadow: var(--shadow-lg);
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
}

.header-content {
  max-width: 1280px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--primary-color);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: transform var(--transition-fast);
}

.logo:hover {
  transform: translateY(-2px);
}

.logo i {
  font-size: 2rem;
  color: var(--secondary-color);
}

.nav-menu {
  display: flex;
  gap: 2rem;
  list-style: none;
  align-items: center;
}

.nav-menu li a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 0;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-menu li a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  transition: width var(--transition-normal);
  border-radius: 2px;
}

.nav-menu li a:hover {
  color: var(--primary-color);
}

.nav-menu li a:hover::after {
  width: 100%;
}

.mobile-menu-toggle {
  background: none;
  border: none;
  font-size: 1.75rem;
  color: var(--primary-color);
  cursor: pointer;
  padding: 0.5rem;
  transition: transform var(--transition-fast);
}

.mobile-menu-toggle:hover {
  transform: scale(1.1);
}

.mobile-menu {
  position: fixed;
  top: 0;
  right: 0;
  width: 280px;
  height: 100vh;
  background: var(--background-primary);
  box-shadow: var(--shadow-xl);
  padding: 2rem;
  transform: translateX(100%);
  transition: transform var(--transition-normal);
  z-index: 2000;
}

.mobile-menu.active {
  transform: translateX(0);
}

.mobile-menu-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  font-size: 2rem;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.5rem;
  transition: color var(--transition-fast);
}

.mobile-menu-close:hover {
  color: var(--primary-color);
}

.mobile-nav {
  list-style: none;
  margin-top: 3rem;
}

.mobile-nav li {
  margin-bottom: 1.5rem;
}

.mobile-nav li a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 1.125rem;
  font-weight: 500;
  display: block;
  padding: 0.75rem;
  border-radius: 8px;
  transition: all var(--transition-fast);
}

.mobile-nav li a:hover {
  background: var(--background-secondary);
  color: var(--primary-color);
  transform: translateX(8px);
}

.mobile-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: 1500;
}

.mobile-overlay.active {
  opacity: 1;
  visibility: visible;
}

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
  color: white;
  padding: 1.5rem;
  box-shadow: var(--shadow-xl);
  z-index: 1100;
  transform: translateY(100%);
  transition: transform var(--transition-slow);
}

.cookie-banner.show {
  transform: translateY(0);
}

.cookie-content {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.cookie-text {
  flex: 1;
  min-width: 250px;
}

.cookie-text p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.5;
}

.cookie-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  padding: 0.75rem 2rem;
  border: none;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width var(--transition-normal), height var(--transition-normal);
  z-index: -1;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: linear-gradient(135deg, var(--secondary-color), var(--secondary-light));
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-accent {
  background: linear-gradient(135deg, var(--accent-color), var(--accent-light));
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background: transparent;
  color: white;
  border: 2px solid white;
}

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

.btn-outline-dark {
  background: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn-outline-dark:hover {
  background: var(--primary-color);
  color: white;
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  padding: 0.5rem 1rem;
}

.btn-ghost:hover {
  background: var(--background-secondary);
  color: var(--primary-color);
}

.form-container {
  background: var(--background-primary);
  padding: 2.5rem;
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.95rem;
}

.form-label.required::after {
  content: '*';
  color: var(--error-color);
  margin-left: 0.25rem;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.875rem 1.125rem;
  border: 2px solid var(--border-color);
  border-radius: 10px;
  font-size: 1rem;
  transition: all var(--transition-fast);
  background: var(--background-primary);
  color: var(--text-primary);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 4px rgba(107, 78, 156, 0.1);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-light);
}

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

.form-checkbox,
.form-radio {
  width: 1.25rem;
  height: 1.25rem;
  border: 2px solid var(--border-color);
  border-radius: 4px;
  cursor: pointer;
  transition: all var(--transition-fast);
  accent-color: var(--primary-color);
}

.form-radio {
  border-radius: 50%;
}

.form-error {
  color: var(--error-color);
  font-size: 0.875rem;
  margin-top: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.form-success {
  color: var(--success-color);
  font-size: 0.875rem;
  margin-top: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.form-hint {
  color: var(--text-light);
  font-size: 0.875rem;
  margin-top: 0.5rem;
}

.input-group {
  position: relative;
}

.input-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-light);
  pointer-events: none;
}

.input-group .form-input {
  padding-left: 3rem;
}

.card {
  background: var(--background-primary);
  border-radius: 16px;
  padding: 2rem;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  transition: all var(--transition-normal);
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.card-header {
  margin-bottom: 1.5rem;
}

.card-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.card-subtitle {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.card-body {
  color: var(--text-secondary);
  line-height: 1.7;
}

.card-footer {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
}

.card-icon {
  width: 60px;
  height: 60px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
  color: white;
  box-shadow: var(--shadow-md);
}

.card-featured {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: white;
  border: none;
}

.card-featured .card-title,
.card-featured .card-subtitle,
.card-featured .card-body {
  color: white;
}

.card-featured .card-footer {
  border-top-color: rgba(255, 255, 255, 0.2);
}

.grid {
  display: grid;
  gap: 2rem;
}

.grid-cols-1 {
  grid-template-columns: repeat(1, minmax(0, 1fr));
}

.grid-cols-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-cols-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-cols-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.accordion {
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
}

.accordion-item {
  border-bottom: 1px solid var(--border-color);
}

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

.accordion-header {
  background: var(--background-primary);
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all var(--transition-fast);
  user-select: none;
}

.accordion-header:hover {
  background: var(--background-secondary);
}

.accordion-header.active {
  background: var(--background-accent);
  color: var(--primary-color);
}

.accordion-title {
  font-weight: 600;
  font-size: 1.05rem;
  margin: 0;
}

.accordion-icon {
  font-size: 1.25rem;
  transition: transform var(--transition-normal);
  color: var(--primary-color);
}

.accordion-header.active .accordion-icon {
  transform: rotate(180deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
}

.accordion-content.active {
  max-height: 1000px;
}

.accordion-body {
  padding: 1.5rem;
  color: var(--text-secondary);
  line-height: 1.7;
  background: var(--background-secondary);
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.375rem 0.875rem;
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 600;
  gap: 0.375rem;
}

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

.badge-secondary {
  background: var(--secondary-light);
  color: var(--secondary-dark);
}

.badge-accent {
  background: var(--accent-light);
  color: var(--accent-dark);
}

.badge-success {
  background: #C6F6D5;
  color: #22543D;
}

.badge-warning {
  background: #FEEBC8;
  color: #7C2D12;
}

.badge-error {
  background: #FED7D7;
  color: #742A2A;
}

.loading-spinner {
  display: inline-block;
  width: 40px;
  height: 40px;
  border: 4px solid var(--background-secondary);
  border-top-color: var(--primary-color);
  border-radius: 50%;
  animation: spinner 0.8s linear infinite;
}

.loading-spinner-sm {
  width: 20px;
  height: 20px;
  border-width: 2px;
}

.loading-spinner-lg {
  width: 60px;
  height: 60px;
  border-width: 6px;
}

@keyframes spinner {
  to {
    transform: rotate(360deg);
  }
}

.pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.fade-in {
  animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.slide-up {
  animation: slideUp 0.5s ease-out;
}

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

.scale-in {
  animation: scaleIn 0.3s ease-out;
}

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

::-webkit-scrollbar {
  width: 12px;
  height: 12px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--primary-light);
  border-radius: 6px;
  border: 3px solid var(--background-secondary);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-color);
}

.hero-section {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  padding: 5rem 1.5rem;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(232, 156, 63, 0.2) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-section::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -5%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(78, 205, 196, 0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.section {
  padding: 4rem 1.5rem;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 1rem;
  text-align: center;
  position: relative;
  display: inline-block;
}

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

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3rem;
}

.feature-icon {
  width: 80px;
  height: 80px;
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  margin: 0 auto 1.5rem;
  background: linear-gradient(135deg, var(--accent-color), var(--accent-dark));
  color: white;
  box-shadow: var(--shadow-lg);
  transition: transform var(--transition-normal);
}

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

.stats-card {
  background: linear-gradient(135deg, var(--background-accent), var(--background-primary));
  padding: 2.5rem;
  border-radius: 16px;
  text-align: center;
  border: 2px solid var(--secondary-light);
  transition: all var(--transition-normal);
}

.stats-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--secondary-color);
}

.stats-number {
  font-size: 3rem;
  font-weight: 800;
  color: var(--primary-color);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stats-label {
  font-size: 1.125rem;
  color: var(--text-secondary);
  font-weight: 600;
}

.testimonial-card {
  background: var(--background-primary);
  padding: 2.5rem;
  border-radius: 16px;
  box-shadow: var(--shadow-md);
  border-left: 4px solid var(--accent-color);
  position: relative;
}

.testimonial-card::before {
  content: '"';
  position: absolute;
  top: 1rem;
  left: 1.5rem;
  font-size: 5rem;
  color: var(--accent-light);
  font-family: Georgia, serif;
  line-height: 1;
}

.testimonial-text {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 1.5rem;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.testimonial-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 1.25rem;
}

.testimonial-info {
  flex: 1;
}

.testimonial-name {
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.testimonial-role {
  font-size: 0.875rem;
  color: var(--text-light);
}

.cta-section {
  background: linear-gradient(135deg, var(--secondary-color), var(--secondary-dark));
  padding: 4rem 1.5rem;
  border-radius: 24px;
  text-align: center;
  position: relative;
  overflow: hidden;
  margin: 2rem 0;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
  border-radius: 50%;
}

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

.cta-text {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.95);
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.course-card {
  background: var(--background-primary);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  border: 1px solid var(--border-color);
}

.course-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.course-image {
  width: 100%;
  height: 200px;
  background: linear-gradient(135deg, var(--primary-light), var(--accent-color));
  position: relative;
  overflow: hidden;
}

.course-image::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.3) 100%);
}

.course-content {
  padding: 1.5rem;
}

.course-category {
  display: inline-block;
  padding: 0.375rem 0.875rem;
  background: var(--accent-light);
  color: var(--accent-dark);
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 1rem;
}

.course-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  line-height: 1.4;
}

.course-description {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.course-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.course-price {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary-color);
}

.course-rating {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--secondary-color);
  font-weight: 600;
}

.alert {
  padding: 1rem 1.25rem;
  border-radius: 10px;
  margin-bottom: 1rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.alert-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
}

.alert-content {
  flex: 1;
}

.alert-title {
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.alert-success {
  background: #C6F6D5;
  color: #22543D;
  border-left: 4px solid var(--success-color);
}

.alert-warning {
  background: #FEEBC8;
  color: #7C2D12;
  border-left: 4px solid var(--warning-color);
}

.alert-error {
  background: #FED7D7;
  color: #742A2A;
  border-left: 4px solid var(--error-color);
}

.alert-info {
  background: #BEE3F8;
  color: #2C5282;
  border-left: 4px solid var(--accent-color);
}

.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--background-secondary);
  border-radius: 50px;
  overflow: hidden;
  position: relative;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  border-radius: 50px;
  transition: width var(--transition-slow);
  position: relative;
  overflow: hidden;
}

.progress-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

.tab-container {
  margin: 2rem 0;
}

.tab-list {
  display: flex;
  gap: 0.5rem;
  border-bottom: 2px solid var(--border-color);
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.tab-button {
  padding: 0.875rem 1.5rem;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-weight: 600;
  cursor: pointer;
  position: relative;
  transition: all var(--transition-fast);
}

.tab-button::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--primary-color);
  transform: scaleX(0);
  transition: transform var(--transition-normal);
}

.tab-button:hover {
  color: var(--primary-color);
}

.tab-button.active {
  color: var(--primary-color);
}

.tab-button.active::after {
  transform: scaleX(1);
}

.tab-content {
  opacity: 0;
  max-height: 0;
  overflow: hidden;
  transition: opacity var(--transition-normal);
}

.tab-content.active {
  opacity: 1;
  max-height: none;
  overflow: visible;
}

.tooltip {
  position: relative;
  display: inline-block;
}

.tooltip-text {
  visibility: hidden;
  background: var(--text-primary);
  color: white;
  text-align: center;
  padding: 0.5rem 0.875rem;
  border-radius: 6px;
  position: absolute;
  z-index: 1;
  bottom: 125%;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  opacity: 0;
  transition: opacity var(--transition-fast);
  font-size: 0.875rem;
  box-shadow: var(--shadow-md);
}

.tooltip-text::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: var(--text-primary);
}

.tooltip:hover .tooltip-text {
  visibility: visible;
  opacity: 1;
}

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  padding: 1rem;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--background-primary);
  border-radius: 16px;
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  transform: scale(0.9);
  transition: transform var(--transition-normal);
}

.modal-overlay.active .modal {
  transform: scale(1);
}

.modal-header {
  padding: 2rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.75rem;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.25rem;
  transition: color var(--transition-fast);
}

.modal-close:hover {
  color: var(--primary-color);
}

.modal-body {
  padding: 2rem;
}

.modal-footer {
  padding: 1.5rem 2rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}

.breadcrumb-item {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.breadcrumb-item.active {
  color: var(--primary-color);
  font-weight: 600;
}

.breadcrumb-separator {
  color: var(--text-light);
}

.pagination {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  justify-content: center;
  margin: 2rem 0;
  flex-wrap: wrap;
}

.pagination-item {
  min-width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  background: var(--background-primary);
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 600;
  transition: all var(--transition-fast);
  cursor: pointer;
  padding: 0 0.75rem;
}

.pagination-item:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
  transform: translateY(-2px);
}

.pagination-item.active {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.pagination-item.disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.pagination-item.disabled:hover {
  transform: none;
  border-color: var(--border-color);
}

.divider {
  height: 1px;
  background: var(--border-color);
  margin: 2rem 0;
}

.divider-text {
  text-align: center;
  position: relative;
  margin: 2rem 0;
}

.divider-text::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--border-color);
}

.divider-text span {
  background: var(--background-primary);
  padding: 0 1rem;
  color: var(--text-light);
  font-size: 0.875rem;
  font-weight: 600;
  position: relative;
  z-index: 1;
  text-transform: uppercase;
  letter-spacing: 1px;
}

@media (max-width: 1024px) {
  .grid-cols-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  
  .grid-cols-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }
  
  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: repeat(1, minmax(0, 1fr));
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .hero-section {
    padding: 3rem 1.5rem;
  }
  
  .cookie-content {
    flex-direction: column;
    gap: 1rem;
  }
  
  .cookie-buttons {
    width: 100%;
    justify-content: center;
  }
  
  .form-container {
    padding: 1.5rem;
  }
  
  .modal-header,
  .modal-body,
  .modal-footer {
    padding: 1.5rem;
  }
  
  .stats-number {
    font-size: 2.5rem;
  }
  
  .cta-title {
    font-size: 2rem;
  }
  
  .cta-text {
    font-size: 1.125rem;
  }
}

@media (max-width: 640px) {
  .section-title {
    font-size: 1.75rem;
  }
  
  .btn {
    width: 100%;
    justify-content: center;
  }
  
  .course-meta {
    flex-direction: column;
    gap: 1rem;
    align-items: flex-start;
  }
  
  .tab-list {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  
  .pagination-item {
    min-width: 36px;
    height: 36px;
    font-size: 0.875rem;
  }
}