@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');
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --primary-color: #6366F1;
  --primary-dark: #4F46E5;
  --primary-light: #818CF8;
  --secondary-color: #F59E0B;
  --secondary-dark: #D97706;
  --secondary-light: #FBBF24;
  --accent-color: #EC4899;
  --accent-light: #F9A8D4;
  --bg-primary: #FFFFFF;
  --bg-secondary: #F8FAFC;
  --bg-tertiary: #F1F5F9;
  --text-primary: #1E293B;
  --text-secondary: #475569;
  --text-muted: #94A3B8;
  --border-color: #E2E8F0;
  --success-color: #10B981;
  --error-color: #EF4444;
  --warning-color: #F59E0B;
  --info-color: #3B82F6;
  --shadow-sm: 0 1px 2px 0 rgba(99, 102, 241, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(99, 102, 241, 0.1), 0 2px 4px -1px rgba(99, 102, 241, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(99, 102, 241, 0.15), 0 4px 6px -2px rgba(99, 102, 241, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(99, 102, 241, 0.2), 0 10px 10px -5px rgba(99, 102, 241, 0.04);
  --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);
  --border-radius-sm: 0.375rem;
  --border-radius-md: 0.5rem;
  --border-radius-lg: 0.75rem;
  --border-radius-xl: 1rem;
  --border-radius-2xl: 1.5rem;
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
  --font-primary: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-secondary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-secondary);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
}

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

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

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

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

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--primary-color), var(--primary-dark));
  border-radius: 10px;
  transition: all var(--transition-base);
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, var(--primary-dark), var(--accent-color));
}

/* Sticky Header */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

header.scrolled {
  box-shadow: var(--shadow-md);
  background: rgba(255, 255, 255, 0.98);
}

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

.logo {
  font-family: var(--font-primary);
  font-size: 1.75rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: all var(--transition-base);
}

.logo:hover {
  transform: translateY(-2px);
  filter: brightness(1.1);
}

.logo i {
  font-size: 2rem;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Navigation */
nav ul {
  display: flex;
  list-style: none;
  gap: 2rem;
  align-items: center;
}

nav ul li a {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  padding: 0.5rem 0;
  transition: all var(--transition-base);
}

nav ul li a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
  transition: width var(--transition-base);
}

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

nav ul li a:hover::after,
nav ul li a.active::after {
  width: 100%;
}

nav ul li a.active {
  color: var(--primary-color);
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 1001;
  background: none;
  border: none;
}

.mobile-menu-toggle span {
  width: 25px;
  height: 3px;
  background: var(--primary-color);
  border-radius: 3px;
  transition: all var(--transition-base);
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

/* Cookie Banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.98), rgba(79, 70, 229, 0.98));
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  padding: 1.5rem;
  z-index: 999;
  box-shadow: 0 -4px 20px rgba(99, 102, 241, 0.3);
  border-top: 2px solid rgba(255, 255, 255, 0.2);
  transform: translateY(100%);
  transition: transform var(--transition-slow);
}

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

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

.cookie-text {
  flex: 1;
  min-width: 300px;
  color: white;
  font-size: 0.95rem;
}

.cookie-text strong {
  font-weight: 600;
  font-size: 1.05rem;
  display: block;
  margin-bottom: 0.25rem;
}

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

.cookie-btn {
  padding: 0.75rem 1.75rem;
  border-radius: var(--border-radius-lg);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition-base);
  border: 2px solid transparent;
  white-space: nowrap;
}

.cookie-btn-accept {
  background: white;
  color: var(--primary-color);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.cookie-btn-accept:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.cookie-btn-decline {
  background: transparent;
  color: white;
  border-color: rgba(255, 255, 255, 0.4);
}

.cookie-btn-decline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: white;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--border-radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  border: 2px solid transparent;
  font-family: var(--font-secondary);
  text-align: center;
  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-slow), height var(--transition-slow);
  z-index: -1;
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  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-dark));
  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), #DB2777);
  color: white;
  box-shadow: var(--shadow-md);
}

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

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

.btn-outline:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-2px);
}

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

.btn-ghost:hover {
  background: var(--bg-tertiary);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 1.125rem 2.5rem;
  font-size: 1.05rem;
}

.btn-sm {
  padding: 0.625rem 1.5rem;
  font-size: 0.875rem;
}

.btn i {
  font-size: 1.1em;
}

/* Forms */
.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 1.25rem;
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius-md);
  font-size: 0.95rem;
  font-family: var(--font-secondary);
  color: var(--text-primary);
  background: var(--bg-primary);
  transition: all var(--transition-base);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

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

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

.form-input-icon {
  position: relative;
}

.form-input-icon i {
  position: absolute;
  left: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 1.1rem;
}

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

.form-error {
  color: var(--error-color);
  font-size: 0.875rem;
  margin-top: 0.375rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.form-error i {
  font-size: 1rem;
}

.form-checkbox,
.form-radio {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  margin-bottom: 0.75rem;
}

.form-checkbox input[type="checkbox"],
.form-radio input[type="radio"] {
  width: 1.25rem;
  height: 1.25rem;
  cursor: pointer;
  accent-color: var(--primary-color);
}

.form-checkbox label,
.form-radio label {
  cursor: pointer;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* Cards */
.card {
  background: var(--bg-primary);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: all var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.card-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-secondary);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.card-subtitle {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.card-body {
  padding: 1.5rem;
}

.card-footer {
  padding: 1.25rem 1.5rem;
  border-top: 1px solid var(--border-color);
  background: var(--bg-secondary);
}

.card-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.card-overlay {
  position: relative;
  overflow: hidden;
}

.card-overlay::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.7) 100%);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.card:hover .card-overlay::after {
  opacity: 1;
}

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

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

/* Grid Layouts */
.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 */
.accordion {
  background: var(--bg-primary);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-color);
}

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

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

.accordion-header {
  width: 100%;
  padding: 1.25rem 1.5rem;
  background: var(--bg-primary);
  border: none;
  text-align: left;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text-primary);
  transition: all var(--transition-base);
  font-family: var(--font-primary);
}

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

.accordion-header i {
  font-size: 1.25rem;
  transition: transform var(--transition-base);
  color: var(--primary-color);
}

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

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

.accordion-content-inner {
  padding: 1.25rem 1.5rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

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

/* Loading Spinner */
.spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--bg-tertiary);
  border-top-color: var(--primary-color);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.spinner-sm {
  width: 24px;
  height: 24px;
  border-width: 3px;
}

.spinner-lg {
  width: 64px;
  height: 64px;
  border-width: 5px;
}

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

.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.95);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@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);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

.animate-fade-in {
  animation: fadeIn 0.6s ease-out;
}

.animate-fade-in-up {
  animation: fadeInUp 0.8s ease-out;
}

.animate-slide-in-left {
  animation: slideInLeft 0.8s ease-out;
}

.animate-slide-in-right {
  animation: slideInRight 0.8s ease-out;
}

.animate-scale-in {
  animation: scaleIn 0.5s ease-out;
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}

/* Hero Section */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #F8FAFC 0%, #EEF2FF 50%, #F8FAFC 100%);
  padding: 6rem 0;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 6s ease-in-out infinite;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -5%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(236, 72, 153, 0.1) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 8s ease-in-out infinite reverse;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  line-height: 1.7;
}

/* Feature Cards */
.feature-card {
  background: var(--bg-primary);
  padding: 2.5rem;
  border-radius: var(--border-radius-xl);
  text-align: center;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

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

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

.feature-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
  border-radius: var(--border-radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: white;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.feature-card:hover .feature-icon {
  transform: scale(1.1) rotate(5deg);
  box-shadow: var(--shadow-lg);
}

.feature-title {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  font-weight: 700;
}

.feature-description {
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Course Cards */
.course-card {
  background: var(--bg-primary);
  border-radius: var(--border-radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  transition: all var(--transition-base);
}

.course-card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-6px);
}

.course-image-wrapper {
  position: relative;
  overflow: hidden;
  height: 200px;
}

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

.course-card:hover .course-image {
  transform: scale(1.1);
}

.course-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: linear-gradient(135deg, var(--secondary-color), var(--secondary-dark));
  color: white;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius-lg);
  font-size: 0.875rem;
  font-weight: 600;
  box-shadow: var(--shadow-md);
}

.course-content {
  padding: 1.75rem;
}

.course-meta {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.course-meta-item {
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

.course-meta-item i {
  color: var(--primary-color);
  font-size: 1rem;
}

.course-title {
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
  font-weight: 700;
  color: var(--text-primary);
}

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

.course-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-color);
}

.course-price {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--primary-color);
}

.course-price-old {
  font-size: 1.125rem;
  color: var(--text-muted);
  text-decoration: line-through;
  margin-left: 0.5rem;
}

.course-instructor {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1rem;
}

.instructor-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--primary-light);
}

.instructor-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* Stats Section */
.stats-section {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: white;
  padding: 5rem 0;
  position: relative;
  overflow: hidden;
}

.stats-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="white" stroke-opacity="0.05" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
  opacity: 0.3;
}

.stats-container {
  position: relative;
  z-index: 2;
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  font-family: var(--font-primary);
}

.stat-label {
  font-size: 1.125rem;
  opacity: 0.9;
  font-weight: 500;
}

/* Testimonial Cards */
.testimonial-card {
  background: var(--bg-primary);
  padding: 2rem;
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  position: relative;
  transition: all var(--transition-base);
}

.testimonial-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.testimonial-quote {
  font-size: 3rem;
  color: var(--primary-light);
  position: absolute;
  top: 1rem;
  left: 1.5rem;
  opacity: 0.3;
  font-family: Georgia, serif;
}

.testimonial-content {
  position: relative;
  z-index: 2;
  margin-top: 2rem;
  color: var(--text-secondary);
  line-height: 1.8;
  font-style: italic;
  margin-bottom: 1.5rem;
}

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

.testimonial-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--primary-light);
}

.testimonial-info {
  flex: 1;
}

.testimonial-name {
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 0.25rem;
  color: var(--text-primary);
}

.testimonial-role {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.testimonial-rating {
  display: flex;
  gap: 0.25rem;
  margin-top: 0.5rem;
}

.testimonial-rating i {
  color: var(--secondary-color);
  font-size: 1rem;
}

/* CTA Section */
.cta-section {
  background: linear-gradient(135deg, var(--accent-color), #DB2777);
  color: white;
  padding: 6rem 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
  animation: pulse 4s ease-in-out infinite;
}

.cta-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  margin: 0 auto;
}

.cta-title {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
}

.cta-description {
  font-size: 1.25rem;
  margin-bottom: 2.5rem;
  opacity: 0.95;
}

/* Footer */
footer {
  background: linear-gradient(135deg, #1E293B, #0F172A);
  color: white;
  padding: 4rem 0 2rem;
  position: relative;
  overflow: hidden;
}

footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-section h3 {
  font-size: 1.25rem;
  margin-bottom: 1.25rem;
  font-weight: 700;
}

.footer-section p {
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: all var(--transition-base);
}

.footer-links a:hover {
  color: white;
  transform: translateX(5px);
}

.footer-links i {
  color: var(--primary-light);
  font-size: 0.875rem;
}

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
}

.social-link {
  width: 45px;
  height: 45px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  transition: all var(--transition-base);
}

.social-link:hover {
  background: var(--primary-color);
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(99, 102, 241, 0.4);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 0.875rem;
  border-radius: var(--border-radius-lg);
  font-size: 0.875rem;
  font-weight: 600;
}

.badge-primary {
  background: rgba(99, 102, 241, 0.1);
  color: var(--primary-color);
}

.badge-secondary {
  background: rgba(245, 158, 11, 0.1);
  color: var(--secondary-color);
}

.badge-success {
  background: rgba(16, 185, 129, 0.1);
  color: var(--success-color);
}

.badge-error {
  background: rgba(239, 68, 68, 0.1);
  color: var(--error-color);
}

.badge-accent {
  background: rgba(236, 72, 153, 0.1);
  color: var(--accent-color);
}

/* Alert */
.alert {
  padding: 1.25rem 1.5rem;
  border-radius: var(--border-radius-lg);
  border-left: 4px solid;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.alert i {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.alert-content {
  flex: 1;
}

.alert-title {
  font-weight: 700;
  margin-bottom: 0.25rem;
  font-size: 1.05rem;
}

.alert-message {
  font-size: 0.95rem;
  line-height: 1.6;
}

.alert-info {
  background: rgba(59, 130, 246, 0.1);
  border-color: var(--info-color);
  color: var(--info-color);
}

.alert-success {
  background: rgba(16, 185, 129, 0.1);
  border-color: var(--success-color);
  color: var(--success-color);
}

.alert-warning {
  background: rgba(245, 158, 11, 0.1);
  border-color: var(--warning-color);
  color: var(--warning-color);
}

.alert-error {
  background: rgba(239, 68, 68, 0.1);
  border-color: var(--error-color);
  color: var(--error-color);
}

/* Progress Bar */
.progress-bar {
  width: 100%;
  height: 10px;
  background: var(--bg-tertiary);
  border-radius: 10px;
  overflow: hidden;
  position: relative;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
  border-radius: 10px;
  transition: width var(--transition-slow);
  position: relative;
  overflow: hidden;
}

.progress-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 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%);
  }
}

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

.tooltip-text {
  visibility: hidden;
  position: absolute;
  bottom: 125%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--text-primary);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius-md);
  font-size: 0.875rem;
  white-space: nowrap;
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: 100;
  box-shadow: var(--shadow-lg);
}

.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 */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(5px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

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

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

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

.modal-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 1.5rem;
  font-weight: 700;
}

.modal-close {
  width: 35px;
  height: 35px;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}

.modal-close:hover {
  background: var(--bg-tertiary);
  transform: rotate(90deg);
}

.modal-close i {
  font-size: 1.25rem;
  color: var(--text-primary);
}

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  padding: 1.25rem 1.5rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 1rem;
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.breadcrumb-item a {
  color: var(--text-muted);
  transition: color var(--transition-base);
}

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

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

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

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin: 3rem 0;
}

.pagination-item {
  min-width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--border-radius-md);
  font-weight: 600;
  border: 2px solid var(--border-color);
  background: var(--bg-primary);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-base);
}

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

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

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

/* Section */
.section {
  padding: 5rem 0;
}

.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 4rem;
}

.section-subtitle {
  color: var(--primary-color);
  font-weight: 700;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 1rem;
}

.section-title {
  font-size: 2.75rem;
  font-weight: 800;
  margin-bottom: 1.25rem;
}

.section-description {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 2.75rem;
  }

  .section-title {
    font-size: 2.25rem;
  }

  .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) {
  .mobile-menu-toggle {
    display: flex;
  }

  nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: white;
    box-shadow: var(--shadow-lg);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
  }

  nav.active {
    max-height: 500px;
  }

  nav ul {
    flex-direction: column;
    gap: 0;
    padding: 1rem 0;
  }

  nav ul li {
    width: 100%;
  }

  nav ul li a {
    display: block;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
  }

  nav ul li a::after {
    display: none;
  }

  .hero {
    min-height: 70vh;
    padding: 4rem 0;
  }

  .hero-title {
    font-size: 2.25rem;
  }

  .hero-subtitle {
    font-size: 1.05rem;
  }

  .section {
    padding: 3rem 0;
  }

  .section-title {
    font-size: 1.875rem;
  }

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

  .stat-number {
    font-size: 2.5rem;
  }

  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: repeat(1, minmax(0, 1fr));
  }

  .cookie-content {
    flex-direction: column;
    align-items: flex-start;
  }

  .cookie-buttons {
    width: 100%;
  }

  .cookie-btn {
    flex: 1;
    justify-content: center;
  }

  .footer-content {
    grid-template-columns: repeat(1, minmax(0, 1fr));
    gap: 2rem;
  }

  .btn {
    padding: 0.75rem 1.5rem;
    font-size: 0.9rem;
  }

  .btn-lg {
    padding: 0.875rem 2rem;
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.875rem;
  }

  .section-title {
    font-size: 1.625rem;
  }

  .cta-title {
    font-size: 1.75rem;
  }

  .card-body,
  .card-header,
  .card-footer {
    padding: 1.25rem;
  }

  .feature-card {
    padding: 1.75rem;
  }

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

  .course-content {
    padding: 1.25rem;
  }

  .testimonial-card {
    padding: 1.5rem;
  }
}