/* Root Variables */
:root {
  --primary-color: #00c2cb;
  --primary-dark: #009ca3;
  --secondary-color: #00eeff;
  --text-color: #e6f5f7;
  --background-dark: #0a1a1c;
  --background-medium: #102426;
  --background-light: #1c3638;
  --accent-color: #00ffdb;
  --error-color: #ff5252;
  --success-color: #4caf50;
  --warning-color: #ffc107;
  --border-radius: 6px;
  --box-shadow: 0 4px 15px rgba(0, 255, 219, 0.15);
  --glow-effect: 0 0 15px rgba(0, 238, 255, 0.5);
  --transition: all 0.3s ease;
}

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

html {
  font-size: 62.5%; /* 10px base */
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  font-size: 1.6rem;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--background-dark);
  min-height: 100vh;
}

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

a:hover {
  color: var(--secondary-color);
}

ul, ol {
  list-style: none;
}

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

button {
  cursor: pointer;
  font-family: inherit;
}

input, textarea, select, button {
  font-family: inherit;
  font-size: 1.6rem;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  margin-bottom: 1.6rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-color);
}

h1 {
  font-size: 4.2rem;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 3.2rem;
  letter-spacing: -0.015em;
}

h3 {
  font-size: 2.4rem;
}

h4 {
  font-size: 2.0rem;
}

h5 {
  font-size: 1.8rem;
}

h6 {
  font-size: 1.6rem;
}

p {
  margin-bottom: 1.6rem;
}

.section-subtitle {
  font-size: 1.8rem;
  color: var(--secondary-color);
  margin-top: -1rem;
  margin-bottom: 2.5rem;
  text-align: center;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 1.2rem 2.4rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-size: 1.6rem;
}

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

.btn-primary:hover {
  background-color: var(--secondary-color);
  color: var(--background-dark);
  box-shadow: var(--glow-effect);
}

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

.btn-secondary:hover {
  background-color: rgba(0, 194, 203, 0.1);
  color: var(--secondary-color);
  border-color: var(--secondary-color);
}

.btn-tertiary {
  background-color: transparent;
  color: var(--text-color);
}

.btn-tertiary:hover {
  color: var(--secondary-color);
}

.btn-small {
  padding: 0.8rem 1.6rem;
  font-size: 1.4rem;
}

.btn-large {
  padding: 1.6rem 3.2rem;
  font-size: 1.8rem;
}

.pulse {
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(0, 238, 255, 0.7);
  }
  70% {
    transform: scale(1.05);
    box-shadow: 0 0 0 10px rgba(0, 238, 255, 0);
  }
  100% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(0, 238, 255, 0);
  }
}

/* Header */
header {
  background-color: rgba(10, 26, 28, 0.95);
  padding: 2rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 194, 203, 0.2);
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
}

.logo img {
  width: 4.2rem;
  height: 4.2rem;
  border-radius: 50%;
  margin-right: 1rem;
}

.logo-text {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--primary-color);
}

nav ul {
  display: flex;
  gap: 2.5rem;
}

nav a {
  color: var(--text-color);
  font-weight: 500;
  position: relative;
  padding: 0.5rem 0;
}

nav a:hover, nav a.active {
  color: var(--secondary-color);
}

nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--secondary-color);
  transition: var(--transition);
}

nav a:hover::after, nav a.active::after {
  width: 100%;
  box-shadow: 0 0 8px var(--secondary-color);
}

.cart-icon {
  position: relative;
  display: flex;
  align-items: center;
}

.cart-icon svg {
  margin-right: 0.5rem;
}

#cart-count {
  position: absolute;
  top: -8px;
  right: -8px;
  background-color: var(--secondary-color);
  color: var(--background-dark);
  font-size: 1.2rem;
  font-weight: 700;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--background-dark) 0%, var(--background-medium) 100%);
  padding: 10rem 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 20% 30%, rgba(0, 238, 255, 0.15) 0%, transparent 70%);
}

.hero::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  background: radial-gradient(circle at 80% 40%, rgba(0, 255, 219, 0.1) 0%, transparent 60%);
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 5rem;
  margin-bottom: 2rem;
  background: linear-gradient(90deg, var(--text-color), var(--secondary-color));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-fill-color: transparent;
}

.hero p {
  font-size: 2rem;
  margin-bottom: 4rem;
  color: rgba(230, 245, 247, 0.8);
}

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

/* Countdown Section */
.countdown-section {
  background-color: var(--background-medium);
  padding: 6rem 0;
  text-align: center;
  border-top: 1px solid rgba(0, 194, 203, 0.2);
  border-bottom: 1px solid rgba(0, 194, 203, 0.2);
}

.countdown-container {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin: 4rem 0;
}

.countdown-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--background-light);
  border-radius: var(--border-radius);
  padding: 2rem;
  min-width: 10rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  border: 1px solid rgba(0, 194, 203, 0.3);
}

.countdown-item span:first-child {
  font-size: 3.2rem;
  font-weight: 700;
  color: var(--secondary-color);
}

.countdown-label {
  font-size: 1.4rem;
  color: var(--text-color);
  margin-top: 0.5rem;
}

.next-article {
  margin-top: 5rem;
  padding: 2rem;
  background: var(--background-light);
  border-radius: var(--border-radius);
  display: inline-block;
}

.next-article h3 {
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.next-article p {
  margin-bottom: 1.5rem;
  font-style: italic;
}

.article-countdown {
  font-size: 2rem;
  font-weight: 700;
  color: var(--secondary-color);
}

/* Benefits Section */
.benefits {
  padding: 8rem 0;
  background-color: var(--background-dark);
}

.benefits h2 {
  text-align: center;
  margin-bottom: 5rem;
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 4rem;
  margin-bottom: 6rem;
}

.benefit-item {
  background-color: var(--background-medium);
  padding: 3rem;
  border-radius: var(--border-radius);
  text-align: center;
  transition: var(--transition);
  border: 1px solid rgba(0, 194, 203, 0.2);
}

.benefit-item:hover {
  transform: translateY(-10px);
  box-shadow: var(--box-shadow);
  border-color: var(--primary-color);
}

.benefit-icon {
  margin-bottom: 2rem;
  color: var(--primary-color);
  font-size: 3.6rem;
}

.benefit-item h3 {
  margin-bottom: 1.5rem;
  color: var(--secondary-color);
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 4rem;
}

.stat-item {
  text-align: center;
  padding: 2rem;
  background-color: var(--background-light);
  border-radius: var(--border-radius);
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-size: 3.6rem;
  font-weight: 700;
  color: var(--secondary-color);
  margin-bottom: 1rem;
}

.stat-label {
  font-size: 1.6rem;
  color: var(--text-color);
}

.cta {
  text-align: center;
  margin-top: 4rem;
}

/* About Courses Section */
.about-courses {
  padding: 8rem 0;
  background-color: var(--background-medium);
}

.about-courses h2 {
  text-align: center;
  margin-bottom: 4rem;
}

.about-content {
  max-width: 900px;
  margin: 0 auto;
}

.about-content p {
  margin-bottom: 2.5rem;
  font-size: 1.8rem;
  line-height: 1.7;
  color: rgba(230, 245, 247, 0.9);
}

.quality-assurance, .certifications, .history {
  margin-top: 4rem;
  padding: 2rem;
  background-color: var(--background-light);
  border-radius: var(--border-radius);
  border-left: 4px solid var(--primary-color);
}

.quality-assurance h3, .certifications h3, .history h3 {
  color: var(--secondary-color);
  margin-bottom: 1.5rem;
}

/* Courses Section */
.courses {
  padding: 8rem 0;
  background-color: var(--background-dark);
}

.courses h2 {
  text-align: center;
  margin-bottom: 2rem;
}

.section-desc {
  text-align: center;
  margin-bottom: 5rem;
  color: rgba(230, 245, 247, 0.8);
  font-size: 1.8rem;
}

.course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 3rem;
}

.course-card {
  background-color: var(--background-medium);
  border-radius: var(--border-radius);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  height: 100%;
  border: 1px solid rgba(0, 194, 203, 0.2);
}

.course-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--box-shadow);
  border-color: var(--primary-color);
}

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

.course-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.course-level {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background-color: var(--secondary-color);
  color: var(--background-dark);
  padding: 0.5rem 1rem;
  border-radius: 3rem;
  font-weight: 600;
  font-size: 1.2rem;
}

.course-content {
  padding: 2rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.course-content h3 {
  font-size: 2rem;
  margin-bottom: 1rem;
  color: var(--text-color);
}

.course-meta {
  display: flex;
  gap: 2rem;
  margin-bottom: 2rem;
  color: rgba(230, 245, 247, 0.7);
  font-size: 1.4rem;
}

.course-duration, .course-modules {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.course-progress {
  margin-top: auto;
  margin-bottom: 1.5rem;
}

.progress-bar {
  height: 0.8rem;
  background-color: var(--background-light);
  border-radius: 1rem;
  overflow: hidden;
  margin-bottom: 0.5rem;
}

.progress {
  height: 100%;
  background-color: var(--primary-color);
  border-radius: 1rem;
}

.progress-text {
  font-size: 1.2rem;
  color: rgba(230, 245, 247, 0.7);
}

.course-price {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--secondary-color);
  margin-bottom: 2rem;
}

.course-actions {
  display: flex;
  gap: 1rem;
}

.course-actions .btn {
  flex: 1;
}

/* Testimonials */
.testimonials {
  padding: 8rem 0;
  background-color: var(--background-medium);
}

.testimonials h2 {
  text-align: center;
  margin-bottom: 5rem;
}

.testimonial-slider {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 3rem;
}

.testimonial {
  background-color: var(--background-light);
  border-radius: var(--border-radius);
  overflow: hidden;
  transition: var(--transition);
  padding: 3rem;
  border: 1px solid rgba(0, 194, 203, 0.2);
}

.testimonial:hover {
  transform: translateY(-10px);
  box-shadow: var(--box-shadow);
  border-color: var(--primary-color);
}

.testimonial-content p {
  font-style: italic;
  margin-bottom: 2rem;
  position: relative;
  padding: 0 1rem;
}

.testimonial-content p::before,
.testimonial-content p::after {
  content: '"';
  font-size: 2.4rem;
  color: var(--primary-color);
  position: absolute;
}

.testimonial-content p::before {
  left: -1rem;
  top: -1rem;
}

.testimonial-content p::after {
  right: -1rem;
  bottom: -1rem;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.author-info h4 {
  font-size: 1.8rem;
  margin-bottom: 0.5rem;
  color: var(--secondary-color);
}

.author-info p {
  font-size: 1.4rem;
  color: rgba(230, 245, 247, 0.7);
  margin-bottom: 0;
}

/* Partners Section */
.partners {
  padding: 6rem 0;
  background-color: var(--background-dark);
}

.partners h2 {
  text-align: center;
  margin-bottom: 4rem;
}

.partner-logos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 3rem;
  justify-items: center;
  align-items: center;
}

.partner-logo {
  color: var(--secondary-color);
  font-weight: 700;
  font-size: 2rem;
  padding: 2rem;
  background-color: var(--background-medium);
  border-radius: var(--border-radius);
  text-align: center;
  min-width: 150px;
  border: 1px solid rgba(0, 194, 203, 0.2);
  transition: var(--transition);
}

.partner-logo:hover {
  transform: scale(1.05);
  border-color: var(--primary-color);
  box-shadow: var(--glow-effect);
}

/* Newsletter Section */
.newsletter {
  padding: 8rem 0;
  background-color: var(--background-medium);
  text-align: center;
  background-image: linear-gradient(rgba(10, 26, 28, 0.9), rgba(10, 26, 28, 0.9)), url('path/to/abstract-background.jpg');
  background-size: cover;
  background-position: center;
}

.newsletter h2 {
  margin-bottom: 1.5rem;
}

.newsletter p {
  margin-bottom: 3rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.newsletter-form {
  display: flex;
  max-width: 500px;
  margin: 0 auto;
  gap: 1rem;
}

.newsletter-form input {
  flex: 1;
  padding: 1.2rem 1.5rem;
  border: 1px solid var(--primary-color);
  background-color: rgba(10, 26, 28, 0.6);
  color: var(--text-color);
  border-radius: var(--border-radius);
}

.newsletter-form input:focus {
  outline: none;
  box-shadow: 0 0 0 2px var(--secondary-color);
}

/* Footer */
footer {
  background-color: var(--background-dark);
  padding: 6rem 0 3rem;
  border-top: 1px solid rgba(0, 194, 203, 0.2);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 4rem;
  margin-bottom: 4rem;
}

.footer-column h3 {
  color: var(--secondary-color);
  margin-bottom: 2rem;
  position: relative;
  padding-bottom: 1rem;
}

.footer-column h3::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 50px;
  height: 2px;
  background-color: var(--primary-color);
}

.footer-logo {
  display: flex;
  align-items: center;
  margin-bottom: 1.5rem;
}

.footer-logo img {
  width: 3.2rem;
  height: 3.2rem;
  border-radius: 50%;
  margin-right: 1rem;
}

.footer-logo span {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary-color);
}

.footer-column p {
  color: rgba(230, 245, 247, 0.7);
  font-size: 1.5rem;
  margin-bottom: 2rem;
}

.social-icons {
  display: flex;
  gap: 1.5rem;
}

.social-icons a {
  color: var(--primary-color);
  transition: var(--transition);
  display: flex;
}

.social-icons a:hover {
  color: var(--secondary-color);
  transform: translateY(-3px);
}

.footer-links li {
  margin-bottom: 1rem;
}

.footer-links a {
  color: rgba(230, 245, 247, 0.7);
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--secondary-color);
  padding-left: 5px;
}

.contact-info li {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  margin-bottom: 1.5rem;
  color: rgba(230, 245, 247, 0.7);
}

.contact-info li svg {
  flex-shrink: 0;
  margin-top: 0.3rem;
  color: var(--primary-color);
}

.footer-bottom {
  padding-top: 3rem;
  border-top: 1px solid rgba(0, 194, 203, 0.2);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 2rem;
}

.copyright {
  color: rgba(230, 245, 247, 0.5);
  font-size: 1.4rem;
}

.payment-methods {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.payment-methods span {
  color: rgba(230, 245, 247, 0.7);
  font-size: 1.4rem;
}

.payment-icons {
  display: flex;
  gap: 1rem;
}

.payment-icon {
  background-color: var(--background-medium);
  padding: 0.5rem 1rem;
  border-radius: 0.4rem;
  font-size: 1.3rem;
  color: var(--text-color);
}

/* Cookie Consent */
.cookie-consent {
  position: fixed;
  bottom: -100%;
  left: 0;
  right: 0;
  background-color: var(--background-medium);
  padding: 2rem;
  z-index: 9999;
  box-shadow: 0 -5px 20px rgba(0, 0, 0, 0.3);
  transition: bottom 0.5s ease;
  border-top: 1px solid var(--primary-color);
}

.cookie-consent.show {
  bottom: 0;
}

.cookie-content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.cookie-text h3 {
  margin-bottom: 1rem;
}

.cookie-buttons {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.cookie-more-info {
  font-size: 1.4rem;
}

/* Notification */
.notification {
  position: fixed;
  top: 2rem;
  right: 2rem;
  background-color: var(--background-medium);
  padding: 1.5rem 2rem;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  z-index: 9999;
  transform: translateX(calc(100% + 2rem));
  transition: transform 0.3s ease;
  border-left: 4px solid var(--primary-color);
}

.notification.show {
  transform: translateX(0);
}

.notification-content {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  color: var(--text-color);
}

.notification-content svg {
  color: var(--primary-color);
}

/* Product Page */
.product-hero {
  background-color: var(--background-medium);
  padding: 3rem 0;
}

.product-breadcrumb {
  font-size: 1.4rem;
  color: rgba(230, 245, 247, 0.6);
}

.product-breadcrumb a {
  color: rgba(230, 245, 247, 0.8);
  transition: var(--transition);
}

.product-breadcrumb a:hover {
  color: var(--secondary-color);
}

.product-detail {
  padding: 6rem 0;
  background-color: var(--background-dark);
}

.product-layout {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 5rem;
}

.product-image {
  position: relative;
}

.product-image img {
  width: 100%;
  border-radius: var(--border-radius);
  border: 1px solid rgba(0, 194, 203, 0.2);
}

.product-badge {
  position: absolute;
  top: 2rem;
  left: 2rem;
  background-color: var(--secondary-color);
  color: var(--background-dark);
  padding: 0.8rem 1.5rem;
  border-radius: 3rem;
  font-weight: 600;
  font-size: 1.4rem;
}

.product-info h1 {
  margin-bottom: 2rem;
  color: var(--text-color);
}

.product-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  color: rgba(230, 245, 247, 0.7);
  font-size: 1.5rem;
}

.product-price {
  margin-bottom: 3rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.current-price {
  font-size: 3rem;
  font-weight: 700;
  color: var(--secondary-color);
}

.original-price {
  font-size: 1.8rem;
  color: rgba(230, 245, 247, 0.5);
  text-decoration: line-through;
}

.discount-label {
  background-color: rgba(0, 194, 203, 0.2);
  color: var(--secondary-color);
  padding: 0.5rem 1rem;
  border-radius: 0.4rem;
  font-size: 1.4rem;
  font-weight: 600;
}

.product-description {
  margin-bottom: 3rem;
  color: rgba(230, 245, 247, 0.9);
}

.product-actions {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 4rem;
}

.product-features {
  background-color: var(--background-medium);
  padding: 3rem;
  border-radius: var(--border-radius);
  border: 1px solid rgba(0, 194, 203, 0.2);
}

.product-features h3 {
  margin-bottom: 2rem;
  color: var(--secondary-color);
}

.product-features ul {
  list-style: disc;
  margin-left: 2rem;
  color: rgba(230, 245, 247, 0.8);
}

.product-features li {
  margin-bottom: 1rem;
}

.product-features li:last-child {
  margin-bottom: 0;
}

.product-details-tabs {
  padding: 6rem 0;
  background-color: var(--background-medium);
}

.tab-header {
  display: flex;
  border-bottom: 1px solid rgba(0, 194, 203, 0.2);
  margin-bottom: 4rem;
  overflow-x: auto;
  scrollbar-width: none;
}

.tab-header::-webkit-scrollbar {
  display: none;
}

.tab-btn {
  padding: 1.5rem 3rem;
  background: transparent;
  color: rgba(230, 245, 247, 0.7);
  border: none;
  font-weight: 600;
  font-size: 1.6rem;
  cursor: pointer;
  transition: var(--transition);
  border-bottom: 3px solid transparent;
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--secondary-color);
}

.tab-btn.active {
  color: var(--secondary-color);
  border-bottom-color: var(--secondary-color);
}

.tab-content {
  min-height: 300px;
}

.tab-pane {
  display: none;
}

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

.curriculum-modules {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.module {
  background-color: var(--background-dark);
  border-radius: var(--border-radius);
  overflow: hidden;
  border: 1px solid rgba(0, 194, 203, 0.2);
}

.module-header {
  padding: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: rgba(0, 194, 203, 0.1);
}

.module-header h3 {
  margin-bottom: 0;
  font-size: 1.8rem;
  color: var(--secondary-color);
}

.module-duration {
  font-size: 1.4rem;
  color: rgba(230, 245, 247, 0.7);
}

.module-content {
  padding: 2rem;
}

.module-lessons {
  list-style: disc;
  margin-left: 2rem;
  color: rgba(230, 245, 247, 0.8);
}

.module-lessons li {
  margin-bottom: 1rem;
}

.module-lessons li:last-child {
  margin-bottom: 0;
}

.module-collapsed {
  text-align: center;
  background-color: var(--background-dark);
  border-radius: var(--border-radius);
  padding: 2rem;
  color: rgba(230, 245, 247, 0.7);
  border: 1px solid rgba(0, 194, 203, 0.2);
}

.module-collapsed p {
  margin-bottom: 1.5rem;
}

.instructor-profiles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 3rem;
}

.instructor {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.instructor-bio {
  padding: 3rem;
  background-color: var(--background-dark);
  border-radius: var(--border-radius);
  border: 1px solid rgba(0, 194, 203, 0.2);
}

.instructor-bio h3 {
  color: var(--secondary-color);
  margin-bottom: 0.5rem;
}

.instructor-title {
  color: var(--primary-color);
  font-weight: 600;
  margin-bottom: 2rem;
}

.reviews-summary {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 4rem;
  margin-bottom: 5rem;
  align-items: start;
}

.rating-summary {
  background-color: var(--background-dark);
  padding: 3rem;
  border-radius: var(--border-radius);
  text-align: center;
  border: 1px solid rgba(0, 194, 203, 0.2);
}

.average-rating {
  font-size: 6rem;
  font-weight: 700;
  color: var(--secondary-color);
  line-height: 1;
  margin-bottom: 1rem;
}

.stars {
  color: var(--primary-color);
  margin-bottom: 1.5rem;
}

.total-reviews {
  color: rgba(230, 245, 247, 0.7);
  font-size: 1.4rem;
}

.rating-distribution {
  background-color: var(--background-dark);
  padding: 3rem;
  border-radius: var(--border-radius);
  border: 1px solid rgba(0, 194, 203, 0.2);
}

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

.rating-level {
  width: 6rem;
  font-size: 1.4rem;
  color: rgba(230, 245, 247, 0.7);
}

.progress-bar {
  flex: 1;
  height: 0.8rem;
  background-color: var(--background-light);
  border-radius: 1rem;
  overflow: hidden;
}

.progress {
  height: 100%;
  background-color: var(--primary-color);
}

.rating-percent {
  width: 4rem;
  text-align: right;
  font-size: 1.4rem;
  color: rgba(230, 245, 247, 0.7);
}

.reviews-list {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
  margin-bottom: 4rem;
}

.review {
  background-color: var(--background-dark);
  padding: 3rem;
  border-radius: var(--border-radius);
  border: 1px solid rgba(0, 194, 203, 0.2);
}

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

.reviewer-name {
  font-weight: 600;
  color: var(--secondary-color);
}

.review-date {
  color: rgba(230, 245, 247, 0.5);
  font-size: 1.4rem;
}

.review-rating {
  color: var(--primary-color);
  margin-left: auto;
}

.reviews-pagination {
  text-align: center;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.faq-item {
  background-color: var(--background-dark);
  border-radius: var(--border-radius);
  overflow: hidden;
  border: 1px solid rgba(0, 194, 203, 0.2);
}

.faq-question {
  padding: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  background-color: rgba(0, 194, 203, 0.1);
}

.faq-question h3 {
  margin-bottom: 0;
  font-size: 1.8rem;
  color: var(--text-color);
}

.faq-answer {
  padding: 2rem;
  border-top: 1px solid rgba(0, 194, 203, 0.2);
  display: none;
  color: rgba(230, 245, 247, 0.8);
}

.faq-item.active .faq-answer {
  display: block;
}

.plus-icon {
  color: var(--primary-color);
  transition: transform 0.3s ease;
}

.faq-item.active .plus-icon {
  transform: rotate(45deg);
}

.related-courses {
  padding: 6rem 0;
  background-color: var(--background-dark);
}

.related-courses h2 {
  text-align: center;
  margin-bottom: 4rem;
}

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

.related-course {
  background-color: var(--background-medium);
  border-radius: var(--border-radius);
  overflow: hidden;
  border: 1px solid rgba(0, 194, 203, 0.2);
  transition: var(--transition);
}

.related-course:hover {
  transform: translateY(-10px);
  box-shadow: var(--box-shadow);
  border-color: var(--primary-color);
}

.related-course img {
  width: 100%;
  height: 150px;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.related-course:hover img {
  transform: scale(1.1);
}

.related-content {
  padding: 2rem;
  text-align: center;
}

.related-content h3 {
  font-size: 1.7rem;
  margin-bottom: 1rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.related-price {
  color: var(--secondary-color);
  font-weight: 700;
  font-size: 1.8rem;
  margin-bottom: 1.5rem;
}

/* Page Header (for internal pages) */
.page-header {
  background-color: var(--background-medium);
  padding: 6rem 0;
  text-align: center;
  position: relative;
}

.page-header::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
}

.page-header h1 {
  margin-bottom: 1.5rem;
}

.breadcrumbs {
  color: rgba(230, 245, 247, 0.6);
  font-size: 1.4rem;
}

.breadcrumbs a {
  color: rgba(230, 245, 247, 0.8);
  transition: var(--transition);
}

.breadcrumbs a:hover {
  color: var(--secondary-color);
}

/* About Page */
.about-intro {
  padding: 8rem 0;
  background-color: var(--background-dark);
}

.about-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 5rem;
  align-items: center;
}

.about-content h2 {
  margin-bottom: 3rem;
  color: var(--secondary-color);
}

.about-content p {
  margin-bottom: 2.5rem;
  font-size: 1.7rem;
  line-height: 1.7;
}

.about-image img {
  border-radius: var(--border-radius);
  border: 2px solid var(--primary-color);
}

.rounded-image {
  border-radius: 50%;
  box-shadow: 0 0 20px rgba(0, 238, 255, 0.3);
}

.mission-vision {
  padding: 8rem 0;
  background-color: var(--background-medium);
}

.mission-vision-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 4rem;
}

.mission-box, .vision-box {
  background-color: var(--background-dark);
  padding: 4rem;
  border-radius: var(--border-radius);
  text-align: center;
  border: 1px solid rgba(0, 194, 203, 0.2);
  transition: var(--transition);
}

.mission-box:hover, .vision-box:hover {
  transform: translateY(-10px);
  border-color: var(--primary-color);
  box-shadow: var(--box-shadow);
}

.icon-container {
  margin-bottom: 2.5rem;
  color: var(--primary-color);
}

.mission-box h3, .vision-box h3 {
  color: var(--secondary-color);
  margin-bottom: 2rem;
}

.values {
  padding: 8rem 0;
  background-color: var(--background-dark);
}

.values h2 {
  text-align: center;
  margin-bottom: 5rem;
}

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

.value-item {
  background-color: var(--background-medium);
  padding: 3.5rem;
  border-radius: var(--border-radius);
  text-align: center;
  border: 1px solid rgba(0, 194, 203, 0.2);
  transition: var(--transition);
}

.value-item:hover {
  transform: translateY(-10px);
  border-color: var(--primary-color);
  box-shadow: var(--box-shadow);
}

.value-icon {
  margin-bottom: 2rem;
  color: var(--primary-color);
}

.value-item h3 {
  color: var(--secondary-color);
  margin-bottom: 1.5rem;
}

.team {
  padding: 8rem 0;
  background-color: var(--background-medium);
}

.team h2 {
  text-align: center;
  margin-bottom: 1.5rem;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 4rem;
  margin-top: 5rem;
}

.team-member {
  background-color: var(--background-dark);
  border-radius: var(--border-radius);
  overflow: hidden;
  border: 1px solid rgba(0, 194, 203, 0.2);
  transition: var(--transition);
}

.team-member:hover {
  transform: translateY(-10px);
  border-color: var(--primary-color);
  box-shadow: var(--box-shadow);
}

.team-member img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}

.team-member h3 {
  padding: 0 2rem;
  margin-top: 2rem;
  margin-bottom: 0.5rem;
  color: var(--secondary-color);
}

.team-member > p {
  padding: 0 2rem;
  margin-bottom: 1.5rem;
}

.team-member > p:first-of-type {
  color: var(--primary-color);
  font-weight: 600;
}

.social-links {
  display: flex;
  gap: 1.5rem;
  padding: 0 2rem 2rem;
}

.social-links a {
  color: var(--primary-color);
  transition: var(--transition);
}

.social-links a:hover {
  color: var(--secondary-color);
  transform: translateY(-3px);
}

.achievements {
  padding: 8rem 0;
  background-color: var(--background-dark);
}

.achievements h2 {
  text-align: center;
  margin-bottom: 5rem;
}

.achievement-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 3rem;
}

.achievement-item {
  background-color: var(--background-medium);
  padding: 3rem 2rem;
  border-radius: var(--border-radius);
  text-align: center;
  border: 1px solid rgba(0, 194, 203, 0.2);
  transition: var(--transition);
}

.achievement-item:hover {
  transform: translateY(-10px);
  border-color: var(--primary-color);
  box-shadow: var(--box-shadow);
}

.achievement-number {
  font-size: 4.2rem;
  font-weight: 700;
  color: var(--secondary-color);
  margin-bottom: 1rem;
}

.achievement-text {
  color: rgba(230, 245, 247, 0.9);
  font-size: 1.6rem;
}

.partners-about {
  padding: 8rem 0;
  background-color: var(--background-medium);
}

.partners-about h2 {
  text-align: center;
  margin-bottom: 1.5rem;
}

.partners-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 3rem;
  margin-top: 5rem;
}

.cta-section {
  padding: 8rem 0;
  background-color: var(--background-dark);
  text-align: center;
}

.cta-content h2 {
  margin-bottom: 2rem;
}

.cta-content p {
  max-width: 600px;
  margin: 0 auto 4rem;
  font-size: 1.8rem;
}

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

/* Contact Page */
.contact-info-section {
  padding: 8rem 0;
  background-color: var(--background-dark);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
  gap: 5rem;
}

.contact-info h2 {
  margin-bottom: 2rem;
}

.contact-info > p {
  margin-bottom: 4rem;
  font-size: 1.7rem;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 3rem;
  margin-bottom: 5rem;
}

.contact-method {
  display: flex;
  gap: 2rem;
}

.contact-icon {
  flex-shrink: 0;
  color: var(--primary-color);
}

.contact-details h3 {
  margin-bottom: 1rem;
  color: var(--secondary-color);
}

.contact-details p {
  color: rgba(230, 245, 247, 0.8);
  margin-bottom: 0.5rem;
}

.contact-hours {
  font-style: italic;
  font-size: 1.4rem;
  color: rgba(230, 245, 247, 0.6);
}

.social-connection h3 {
  color: var(--secondary-color);
  margin-bottom: 2rem;
}

.contact-social {
  justify-content: flex-start;
}

.contact-form-container h2 {
  margin-bottom: 1.5rem;
}

.form-instruction {
  margin-bottom: 3rem;
  color: rgba(230, 245, 247, 0.8);
}

.contact-form {
  background-color: var(--background-medium);
  padding: 4rem;
  border-radius: var(--border-radius);
  border: 1px solid rgba(0, 194, 203, 0.2);
}

.form-group {
  margin-bottom: 2.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 1rem;
  color: var(--text-color);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 1.2rem 1.5rem;
  border: 1px solid rgba(0, 194, 203, 0.4);
  background-color: var(--background-dark);
  color: var(--text-color);
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(0, 194, 203, 0.2);
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%2300c2cb' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1.5rem center;
  background-size: 1.6rem;
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.form-checkbox input {
  width: auto;
  margin-top: 0.4rem;
}

.form-checkbox label {
  margin-bottom: 0;
  font-size: 1.5rem;
  color: rgba(230, 245, 247, 0.8);
}

.form-columns {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.faq-section {
  padding: 8rem 0;
  background-color: var(--background-medium);
}

.faq-section h2 {
  text-align: center;
  margin-bottom: 5rem;
}

.faq-container {
  max-width: 800px;
  margin: 0 auto;
}

/* Cart Page */
.cart-section {
  padding: 8rem 0;
  background-color: var(--background-dark);
  min-height: 60vh;
}

.empty-cart {
  text-align: center;
  padding: 5rem 0;
}

.empty-cart-icon {
  color: rgba(0, 194, 203, 0.3);
  margin-bottom: 3rem;
  display: flex;
  justify-content: center;
}

.empty-cart h2 {
  margin-bottom: 1.5rem;
}

.empty-cart p {
  margin-bottom: 3rem;
  color: rgba(230, 245, 247, 0.7);
}

.cart-items-container {
  margin-bottom: 5rem;
}

.cart-items {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.cart-item {
  display: grid;
  grid-template-columns: 100px 1fr auto;
  gap: 2rem;
  padding: 2rem;
  background-color: var(--background-medium);
  border-radius: var(--border-radius);
  align-items: center;
  border: 1px solid rgba(0, 194, 203, 0.2);
}

.cart-item-image img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 0.5rem;
}

.cart-item-info h3 {
  margin-bottom: 0.5rem;
  font-size: 1.8rem;
}

.cart-item-info p {
  color: rgba(230, 245, 247, 0.7);
  font-size: 1.4rem;
  margin-bottom: 1rem;
}

.cart-item-price {
  color: var(--secondary-color);
  font-weight: 700;
  font-size: 1.8rem;
}

.cart-item-actions {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.quantity-control {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.quantity-btn {
  background-color: var(--background-dark);
  width: 3rem;
  height: 3rem;
  display: flex;
  justify-content: center;
  align-items: center;
  border: 1px solid rgba(0, 194, 203, 0.4);
  border-radius: 0.4rem;
  color: var(--text-color);
  font-size: 1.8rem;
  cursor: pointer;
  transition: var(--transition);
}

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

.quantity-display {
  background-color: var(--background-dark);
  width: 4rem;
  height: 3rem;
  display: flex;
  justify-content: center;
  align-items: center;
  border: 1px solid rgba(0, 194, 203, 0.4);
  border-radius: 0.4rem;
  color: var(--text-color);
  font-weight: 600;
}

.remove-btn {
  background-color: transparent;
  border: none;
  color: var(--error-color);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.4rem;
  transition: var(--transition);
}

.remove-btn:hover {
  opacity: 0.8;
}

.cart-summary {
  background-color: var(--background-medium);
  padding: 3rem;
  border-radius: var(--border-radius);
  border: 1px solid rgba(0, 194, 203, 0.2);
}

.cart-summary h3 {
  margin-bottom: 3rem;
  color: var(--secondary-color);
  position: relative;
  padding-bottom: 1rem;
}

.cart-summary h3::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 50px;
  height: 2px;
  background-color: var(--primary-color);
}

.summary-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  color: rgba(230, 245, 247, 0.8);
  font-size: 1.6rem;
}

.summary-row.total {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(0, 194, 203, 0.2);
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-color);
}

.summary-row.total span:last-child {
  color: var(--secondary-color);
}

.promo-code {
  display: flex;
  gap: 1rem;
  margin-bottom: 3rem;
}

.promo-code input {
  flex: 1;
  padding: 1.2rem 1.5rem;
  background-color: var(--background-dark);
  border: 1px solid rgba(0, 194, 203, 0.4);
  color: var(--text-color);
  border-radius: var(--border-radius);
}

.promo-code input:focus {
  outline: none;
  border-color: var(--primary-color);
}

.cart-actions {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.secure-checkout {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  color: rgba(230, 245, 247, 0.6);
  font-size: 1.4rem;
}

.secure-checkout svg {
  color: var(--primary-color);
}

.cart-with-items-container {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 4rem;
}

.recommendations {
  padding: 8rem 0;
  background-color: var(--background-medium);
}

.recommendations h2 {
  text-align: center;
  margin-bottom: 4rem;
}

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

.recommended-course {
  background-color: var(--background-dark);
  border-radius: var(--border-radius);
  overflow: hidden;
  border: 1px solid rgba(0, 194, 203, 0.2);
  transition: var(--transition);
}

.recommended-course:hover {
  transform: translateY(-10px);
  border-color: var(--primary-color);
  box-shadow: var(--box-shadow);
}

.recommended-course img {
  width: 100%;
  height: 160px;
  object-fit: cover;
}

.recommended-content {
  padding: 2rem;
  text-align: center;
}

.recommended-content h3 {
  font-size: 1.7rem;
  margin-bottom: 1rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.recommended-price {
  color: var(--secondary-color);
  font-weight: 700;
  font-size: 1.8rem;
  margin-bottom: 1.5rem;
}

.cart-faq {
  padding: 8rem 0;
  background-color: var(--background-dark);
}

.cart-faq h2 {
  text-align: center;
  margin-bottom: 5rem;
}

.cart-faq .faq-container {
  max-width: 800px;
  margin: 0 auto;
}

/* Checkout Page */
.checkout-section {
  padding: 8rem 0;
  background-color: var(--background-dark);
}

.checkout-container {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 5rem;
}

.checkout-form-container h2 {
  margin-bottom: 1.5rem;
}

.form-instruction {
  color: rgba(230, 245, 247, 0.7);
  margin-bottom: 3rem;
}

.checkout-form {
  background-color: var(--background-medium);
  padding: 4rem;
  border-radius: var(--border-radius);
  border: 1px solid rgba(0, 194, 203, 0.2);
}

.order-summary {
  background-color: var(--background-medium);
  padding: 3rem;
  border-radius: var(--border-radius);
  border: 1px solid rgba(0, 194, 203, 0.2);
  align-self: flex-start;
  position: sticky;
  top: 10rem;
}

.order-summary h2 {
  margin-bottom: 3rem;
  color: var(--secondary-color);
  position: relative;
  padding-bottom: 1rem;
}

.order-summary h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 50px;
  height: 2px;
  background-color: var(--primary-color);
}

.summary-items {
  margin-bottom: 3rem;
}

.summary-item {
  display: flex;
  gap: 2rem;
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(0, 194, 203, 0.1);
}

.summary-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.summary-item-image {
  width: 8rem;
  height: 8rem;
  flex-shrink: 0;
}

.summary-item-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0.4rem;
}

.summary-item-info {
  flex: 1;
}

.summary-item-info h3 {
  font-size: 1.6rem;
  margin-bottom: 0.5rem;
}

.summary-item-price {
  color: var(--secondary-color);
  font-weight: 600;
}

.summary-totals {
  margin-bottom: 3rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(0, 194, 203, 0.2);
}

.need-help {
  margin-top: 3rem;
  padding-top: 3rem;
  border-top: 1px solid rgba(0, 194, 203, 0.2);
}

.need-help h3 {
  color: var(--secondary-color);
  margin-bottom: 1.5rem;
  font-size: 1.8rem;
}

.need-help p {
  color: rgba(230, 245, 247, 0.8);
  font-size: 1.5rem;
}

.btn-large {
  width: 100%;
}

/* Success Page */
.success-section {
  padding: 8rem 0;
  min-height: 70vh;
  display: flex;
  align-items: center;
  background-color: var(--background-dark);
}

.success-container {
  background-color: var(--background-medium);
  padding: 5rem;
  border-radius: var(--border-radius);
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  border: 1px solid rgba(0, 194, 203, 0.3);
}

.success-icon {
  color: var(--success-color);
  font-size: 8rem;
  margin-bottom: 3rem;
  display: flex;
  justify-content: center;
}

.success-message {
  font-size: 2rem;
  margin-bottom: 3rem;
  color: rgba(230, 245, 247, 0.9);
}

.order-confirmation {
  background-color: var(--background-dark);
  padding: 3rem;
  border-radius: var(--border-radius);
  margin-bottom: 4rem;
  border: 1px solid rgba(0, 194, 203, 0.2);
}

.success-next-steps {
  margin-bottom: 4rem;
}

.success-next-steps h2 {
  margin-bottom: 3rem;
  color: var(--secondary-color);
}

.next-steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 3rem;
}

.next-step {
  background-color: var(--background-dark);
  padding: 3rem;
  border-radius: var(--border-radius);
  border: 1px solid rgba(0, 194, 203, 0.2);
  transition: var(--transition);
}

.next-step:hover {
  transform: translateY(-10px);
  border-color: var(--primary-color);
  box-shadow: var(--box-shadow);
}

.next-step-icon {
  color: var(--primary-color);
  margin-bottom: 2rem;
  display: flex;
  justify-content: center;
}

.next-step h3 {
  color: var(--secondary-color);
  margin-bottom: 1.5rem;
  font-size: 1.8rem;
  text-align: center;
}

.next-step p {
  color: rgba(230, 245, 247, 0.8);
  font-size: 1.5rem;
}

.success-buttons {
  display: flex;
  justify-content: center;
  gap: 2rem;
}

.recommended-courses {
  padding: 8rem 0;
  background-color: var(--background-medium);
}

.recommended-courses h2 {
  text-align: center;
  margin-bottom: 4rem;
}

.recommended-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 3rem;
}

/* Responsive Styles */
@media (max-width: 1200px) {
  html {
    font-size: 58%;
  }
}

@media (max-width: 992px) {
  .hero h1 {
    font-size: 4.2rem;
  }
  
  .about-grid, 
  .product-layout, 
  .checkout-container {
    grid-template-columns: 1fr;
  }
  
  .reviews-summary {
    grid-template-columns: 1fr;
  }
  
  .cart-with-items-container {
    grid-template-columns: 1fr;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  html {
    font-size: 56%;
  }
  
  header .container {
    flex-direction: column;
    gap: 2rem;
  }
  
  .hero-cta,
  .cta-buttons,
  .success-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .countdown-container {
    flex-wrap: wrap;
  }
  
  .countdown-item {
    flex: 1 1 40%;
    min-width: auto;
  }
  
  .cart-item {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .cart-item-image img {
    width: 100px;
    margin: 0 auto;
  }
  
  .cart-item-actions {
    justify-content: center;
  }
}

@media (max-width: 576px) {
  nav ul {
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem 3rem;
  }
  
  .hero h1 {
    font-size: 3.6rem;
  }
  
  .tab-header {
    flex-wrap: nowrap;
    overflow-x: auto;
  }
  
  .tab-btn {
    flex: 1 0 auto;
    padding: 1.5rem 2rem;
  }
  
  .form-columns {
    grid-template-columns: 1fr;
  }
  
  .product-meta {
    flex-direction: column;
    gap: 1.5rem;
    align-items: flex-start;
  }
  
  .product-actions {
    flex-direction: column;
  }
}