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

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: #333;
  overflow-x: hidden;
}

.section-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header Styles */
.main-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.navigation-bar {
  padding: 1rem 0;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand-logo {
  display: flex;
  align-items: center;
  font-size: 1.5rem;
  font-weight: bold;
  color: #2563eb;
}

.brand-logo i {
  margin-right: 0.5rem;
  font-size: 1.8rem;
}

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

.nav-link {
  text-decoration: none;
  color: #333;
  font-weight: 500;
  transition: color 0.3s ease;
  position: relative;
}

.nav-link:hover {
  color: #2563eb;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: #2563eb;
  transition: width 0.3s ease;
}

.nav-link:hover::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.cart-button {
  position: relative;
  background: #2563eb;
  color: white;
  border: none;
  padding: 0.75rem;
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 1.1rem;
}

.cart-button:hover {
  background: #1d4ed8;
  transform: scale(1.05);
}

.cart-count {
  position: absolute;
  top: -8px;
  right: -8px;
  background: #ef4444;
  color: white;
  border-radius: 50%;
  width: 20px;
  height: 20px;
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: #333;
}

/* Hero Section */
.hero-section {
  position: relative;
  height: 100vh;
  overflow: hidden;
  margin-top: 80px;
}

.hero-slider {
  position: relative;
  width: 100%;
  height: 100%;
}

.slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1s ease-in-out;
  display: flex;
  align-items: center;
  justify-content: center;
}

.slide.active-slide {
  opacity: 1;
}

.slide-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.slide-background::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
}

.slide-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: white;
  max-width: 800px;
  padding: 0 20px;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: bold;
  margin-bottom: 1rem;
  animation: fadeInUp 1s ease-out;
}

.hero-description {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  opacity: 0.9;
  animation: fadeInUp 1s ease-out 0.3s both;
}

.primary-button {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: white;
  border: none;
  padding: 1rem 2rem;
  font-size: 1.1rem;
  font-weight: 600;
  border-radius: 50px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-block;
  animation: fadeInUp 1s ease-out 0.6s both;
}

.primary-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(37, 99, 235, 0.3);
}

.slider-controls {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 100%;
  display: flex;
  justify-content: space-between;
  padding: 0 2rem;
  z-index: 3;
}

.slider-arrow {
  background: rgba(255, 255, 255, 0.2);
  border: none;
  color: white;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.slider-arrow:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.1);
}

.slider-dots {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.5rem;
  z-index: 3;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: all 0.3s ease;
}

.dot.active-dot {
  background: white;
  transform: scale(1.2);
}

/* Courses Section */
.courses-section {
  padding: 5rem 0;
  background: #f8fafc;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title {
  font-size: 2.5rem;
  font-weight: bold;
  color: #1e293b;
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.1rem;
  color: #64748b;
  max-width: 600px;
  margin: 0 auto;
}

.course-filters {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.filter-button {
  background: white;
  border: 2px solid #e2e8f0;
  color: #64748b;
  padding: 0.75rem 1.5rem;
  border-radius: 25px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-weight: 500;
}

.filter-button:hover,
.filter-button.active-filter {
  background: #2563eb;
  border-color: #2563eb;
  color: white;
  transform: translateY(-2px);
}

.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.course-card {
  background: white;
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
  cursor: pointer;
}

.course-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
}

.course-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.course-content {
  padding: 1.5rem;
}

.course-category {
  display: inline-block;
  background: #dbeafe;
  color: #2563eb;
  padding: 0.25rem 0.75rem;
  border-radius: 15px;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 1rem;
}

.course-title {
  font-size: 1.25rem;
  font-weight: bold;
  color: #1e293b;
  margin-bottom: 0.5rem;
}

.course-description {
  color: #64748b;
  margin-bottom: 1rem;
  line-height: 1.6;
}

.course-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.course-rating {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  color: #fbbf24;
}

.course-students {
  color: #64748b;
  font-size: 0.875rem;
}

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

.course-price {
  font-size: 1.5rem;
  font-weight: bold;
  color: #2563eb;
}

.add-to-cart-button {
  background: #10b981;
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 25px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-weight: 500;
}

.add-to-cart-button:hover {
  background: #059669;
  transform: scale(1.05);
}

/* About Section */
.about-section {
  padding: 5rem 0;
  background: white;
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-text {
  padding-right: 2rem;
}

.about-description {
  font-size: 1.1rem;
  color: #64748b;
  margin-bottom: 2rem;
  line-height: 1.8;
}

.features-list {
  display: grid;
  gap: 1rem;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.feature-icon {
  color: #10b981;
  font-size: 1.25rem;
}

.about-image img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  border-radius: 15px;
}

/* Contact Section */
.contact-section {
  padding: 5rem 0;
  background: #f8fafc;
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.contact-description {
  font-size: 1.1rem;
  color: #64748b;
  margin-bottom: 2rem;
  line-height: 1.8;
}

.contact-details {
  display: grid;
  gap: 1.5rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.contact-icon {
  color: #2563eb;
  font-size: 1.25rem;
  width: 20px;
}

.contact-form {
  background: white;
  padding: 2rem;
  border-radius: 15px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

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

.form-input {
  width: 100%;
  padding: 1rem;
  border: 2px solid #e2e8f0;
  border-radius: 10px;
  font-size: 1rem;
  transition: border-color 0.3s ease;
}

.form-input:focus {
  outline: none;
  border-color: #2563eb;
}

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

.submit-button {
  width: 100%;
}

/* Footer */
.main-footer {
  background: #1e293b;
  color: white;
  padding: 3rem 0 1rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  font-size: 1.5rem;
  font-weight: bold;
  margin-bottom: 1rem;
}

.footer-brand i {
  margin-right: 0.5rem;
  color: #2563eb;
}

.footer-description {
  color: #94a3b8;
  line-height: 1.6;
}

.footer-title {
  font-size: 1.25rem;
  font-weight: bold;
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
  display: grid;
  gap: 0.5rem;
}

.footer-links a {
  color: #94a3b8;
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-links a:hover {
  color: white;
}

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

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: #334155;
  color: white;
  border-radius: 50%;
  text-decoration: none;
  transition: all 0.3s ease;
}

.social-link:hover {
  background: #2563eb;
  transform: translateY(-2px);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  margin-top: 2rem;
  border-top: 1px solid #334155;
  color: #94a3b8;
}

/* Modal Styles */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

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

.modal-content {
  background: white;
  border-radius: 15px;
  max-width: 800px;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  transform: scale(0.8);
  transition: transform 0.3s ease;
}

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

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: #ef4444;
  color: white;
  border: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  z-index: 10;
  transition: all 0.3s ease;
}

.modal-close:hover {
  background: #dc2626;
  transform: scale(1.1);
}

.course-detail {
  padding: 2rem;
}

.course-detail-image {
  width: 100%;
  height: 300px;
  object-fit: cover;
  border-radius: 10px;
  margin-bottom: 2rem;
}

.course-detail-header {
  margin-bottom: 2rem;
}

.course-detail-title {
  font-size: 2rem;
  font-weight: bold;
  color: #1e293b;
  margin-bottom: 1rem;
}

.course-detail-meta {
  display: flex;
  gap: 2rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.course-detail-price {
  font-size: 2rem;
  font-weight: bold;
  color: #2563eb;
}

.course-detail-description {
  font-size: 1.1rem;
  line-height: 1.8;
  color: #64748b;
  margin-bottom: 2rem;
}

.course-curriculum {
  margin-bottom: 2rem;
}

.curriculum-title {
  font-size: 1.5rem;
  font-weight: bold;
  margin-bottom: 1rem;
  color: #1e293b;
}

.curriculum-list {
  list-style: none;
  display: grid;
  gap: 0.75rem;
}

.curriculum-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  background: #f8fafc;
  border-radius: 8px;
}

.curriculum-item i {
  color: #10b981;
}

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

/* Cart Sidebar */
.cart-sidebar {
  position: fixed;
  top: 0;
  right: -400px;
  width: 400px;
  height: 100vh;
  background: white;
  z-index: 2001;
  transition: right 0.3s ease;
  display: flex;
  flex-direction: column;
  box-shadow: -5px 0 20px rgba(0, 0, 0, 0.1);
}

.cart-sidebar.active {
  right: 0;
}

.cart-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

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

.cart-header {
  padding: 1.5rem;
  border-bottom: 1px solid #e2e8f0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.cart-title {
  font-size: 1.25rem;
  font-weight: bold;
  color: #1e293b;
}

.cart-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: #64748b;
}

.cart-items {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
}

.cart-item {
  display: flex;
  gap: 1rem;
  padding: 1rem;
  border-bottom: 1px solid #e2e8f0;
}

.cart-item-image {
  width: 80px;
  height: 60px;
  object-fit: cover;
  border-radius: 8px;
}

.cart-item-details {
  flex: 1;
}

.cart-item-title {
  font-weight: 600;
  color: #1e293b;
  margin-bottom: 0.25rem;
}

.cart-item-price {
  color: #2563eb;
  font-weight: bold;
}

.cart-item-remove {
  background: #ef4444;
  color: white;
  border: none;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.875rem;
}

.cart-empty {
  text-align: center;
  padding: 2rem;
  color: #64748b;
}

.cart-footer {
  padding: 1.5rem;
  border-top: 1px solid #e2e8f0;
}

.cart-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  font-size: 1.25rem;
  font-weight: bold;
}

.checkout-button {
  width: 100%;
}

/* Success Message */
.success-message {
  position: fixed;
  top: 100px;
  right: 20px;
  background: #10b981;
  color: white;
  padding: 1rem 1.5rem;
  border-radius: 10px;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  z-index: 3000;
  transform: translateX(400px);
  transition: transform 0.3s ease;
  box-shadow: 0 4px 20px rgba(16, 185, 129, 0.3);
}

.success-message.show {
  transform: translateX(0);
}

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

/* Responsive Design */
@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }

  .mobile-menu-toggle {
    display: block;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-description {
    font-size: 1rem;
  }

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

  .courses-grid {
    grid-template-columns: 1fr;
  }

  .about-content,
  .contact-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .about-text {
    padding-right: 0;
  }

  .course-filters {
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: 0.5rem;
  }

  .filter-button {
    white-space: nowrap;
  }

  .cart-sidebar {
    width: 100%;
    right: -100%;
  }

  .modal-content {
    margin: 1rem;
    max-width: calc(100% - 2rem);
  }

  .course-detail {
    padding: 1rem;
  }

  .course-detail-title {
    font-size: 1.5rem;
  }

  .course-detail-meta {
    flex-direction: column;
    gap: 1rem;
  }

  .course-actions {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }

  .slider-controls {
    padding: 0 1rem;
  }

  .slider-arrow {
    width: 40px;
    height: 40px;
  }

  .success-message {
    right: 10px;
    left: 10px;
    transform: translateY(-100px);
  }

  .success-message.show {
    transform: translateY(0);
  }
}

/* Statistics Section */
.stats-section {
  padding: 4rem 0;
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: white;
}

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

.stat-item {
  padding: 1rem;
}

.stat-number {
  font-size: 3rem;
  font-weight: bold;
  margin-bottom: 0.5rem;
  background: linear-gradient(45deg, #fbbf24, #f59e0b);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 1.1rem;
  opacity: 0.9;
}

/* Testimonials Section */
.testimonials-section {
  padding: 5rem 0;
  background: white;
  position: relative;
}

.testimonials-slider {
  position: relative;
  overflow: hidden;
  margin: 2rem 0;
}

.testimonial-track {
  display: flex;
  transition: transform 0.5s ease;
}

.testimonial-card {
  min-width: 100%;
  padding: 2rem;
  text-align: center;
}

.testimonial-content {
  max-width: 800px;
  margin: 0 auto;
}

.testimonial-text {
  font-size: 1.25rem;
  font-style: italic;
  color: #64748b;
  margin-bottom: 2rem;
  line-height: 1.8;
}

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

.author-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  object-fit: cover;
}

.author-info {
  text-align: left;
}

.author-name {
  font-weight: bold;
  color: #1e293b;
  margin-bottom: 0.25rem;
}

.author-role {
  color: #64748b;
  font-size: 0.9rem;
}

.testimonial-controls {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 2rem;
}

.testimonial-arrow {
  background: #f1f5f9;
  border: none;
  color: #64748b;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.3s ease;
}

.testimonial-arrow:hover {
  background: #2563eb;
  color: white;
  transform: scale(1.1);
}

/* Newsletter Section */
.newsletter-section {
  padding: 4rem 0;
  background: linear-gradient(135deg, #f8fafc, #e2e8f0);
}

.newsletter-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.newsletter-title {
  font-size: 2rem;
  font-weight: bold;
  color: #1e293b;
  margin-bottom: 1rem;
}

.newsletter-description {
  color: #64748b;
  font-size: 1.1rem;
  line-height: 1.6;
}

.newsletter-form {
  background: white;
  padding: 2rem;
  border-radius: 15px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.newsletter-input-group {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.newsletter-input {
  flex: 1;
  padding: 1rem;
  border: 2px solid #e2e8f0;
  border-radius: 10px;
  font-size: 1rem;
}

.newsletter-input:focus {
  outline: none;
  border-color: #2563eb;
}

.newsletter-button {
  background: #2563eb;
  color: white;
  border: none;
  padding: 1rem 2rem;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.3s ease;
}

.newsletter-button:hover {
  background: #1d4ed8;
  transform: translateY(-2px);
}

.newsletter-benefits {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.benefit-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: #64748b;
  font-size: 0.9rem;
}

.benefit-item i {
  color: #10b981;
}

/* Chat Widget */
.chat-widget {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 1500;
}

.chat-toggle {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(37, 99, 235, 0.3);
  transition: all 0.3s ease;
  position: relative;
}

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

.chat-notification {
  position: absolute;
  top: -5px;
  right: -5px;
  background: #ef4444;
  color: white;
  border-radius: 50%;
  width: 20px;
  height: 20px;
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
}

.chat-window {
  position: absolute;
  bottom: 70px;
  right: 0;
  width: 350px;
  height: 450px;
  background: white;
  border-radius: 15px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
  display: none;
  flex-direction: column;
  overflow: hidden;
}

.chat-window.active {
  display: flex;
}

.chat-header {
  background: #2563eb;
  color: white;
  padding: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.chat-agent {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.agent-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
}

.agent-name {
  font-weight: 600;
}

.agent-status {
  font-size: 0.8rem;
  opacity: 0.8;
}

.chat-close {
  background: none;
  border: none;
  color: white;
  cursor: pointer;
  font-size: 1.2rem;
}

.chat-messages {
  flex: 1;
  padding: 1rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.message {
  max-width: 80%;
}

.agent-message {
  align-self: flex-start;
}

.user-message {
  align-self: flex-end;
}

.message-content {
  background: #f1f5f9;
  padding: 0.75rem 1rem;
  border-radius: 15px;
  margin-bottom: 0.25rem;
}

.user-message .message-content {
  background: #2563eb;
  color: white;
}

.message-time {
  font-size: 0.75rem;
  color: #64748b;
  text-align: right;
}

.user-message .message-time {
  text-align: left;
}

.chat-input-area {
  padding: 1rem;
  border-top: 1px solid #e2e8f0;
  display: flex;
  gap: 0.5rem;
}

.chat-input {
  flex: 1;
  padding: 0.75rem;
  border: 1px solid #e2e8f0;
  border-radius: 20px;
  outline: none;
}

.chat-send {
  background: #2563eb;
  color: white;
  border: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.3s ease;
}

.chat-send:hover {
  background: #1d4ed8;
  transform: scale(1.05);
}

/* Progress Bar */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: rgba(37, 99, 235, 0.1);
  z-index: 1001;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #2563eb, #1d4ed8);
  width: 0%;
  transition: width 0.3s ease;
}

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: 20px;
  left: 20px;
  width: 50px;
  height: 50px;
  background: #2563eb;
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 1000;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: #1d4ed8;
  transform: translateY(-2px);
}

/* Loading Screen */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: white;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s ease;
}

.loading-screen.hidden {
  opacity: 0;
  pointer-events: none;
}

.loading-content {
  text-align: center;
}

.loading-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: bold;
  color: #2563eb;
  margin-bottom: 2rem;
}

.loading-logo i {
  margin-right: 0.5rem;
  font-size: 2.5rem;
}

.loading-spinner {
  width: 50px;
  height: 50px;
  border: 4px solid #e2e8f0;
  border-top: 4px solid #2563eb;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 1rem;
}

.loading-text {
  color: #64748b;
  font-size: 1.1rem;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* Course Comparison Modal */
.comparison-modal {
  max-width: 1000px;
  width: 90%;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}

.comparison-table th,
.comparison-table td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid #e2e8f0;
}

.comparison-table th {
  background: #f8fafc;
  font-weight: 600;
}

.comparison-course {
  text-align: center;
}

.comparison-course img {
  width: 100px;
  height: 60px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 0.5rem;
}

/* Quick Actions */
.quick-actions {
  position: fixed;
  bottom: 100px;
  right: 20px;
  z-index: 1400;
}

.quick-action-toggle {
  width: 50px;
  height: 50px;
  background: #10b981;
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.quick-action-toggle:hover {
  transform: rotate(45deg) scale(1.1);
}

.quick-action-menu {
  position: absolute;
  bottom: 60px;
  right: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s ease;
}

.quick-actions.active .quick-action-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.quick-action-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: white;
  border: none;
  padding: 0.75rem 1rem;
  border-radius: 25px;
  cursor: pointer;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
  white-space: nowrap;
}

.quick-action-item:hover {
  background: #f8fafc;
  transform: translateX(-5px);
}

/* Wishlist and Compare Features */
.course-card {
  position: relative;
}

.course-actions {
  position: absolute;
  top: 1rem;
  right: 1rem;
  display: flex;
  gap: 0.5rem;
}

.wishlist-button,
.compare-checkbox {
  background: rgba(255, 255, 255, 0.9);
  border: none;
  width: 35px;
  height: 35px;
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.wishlist-button:hover {
  background: white;
  transform: scale(1.1);
}

.wishlist-button.active {
  background: #ef4444;
  color: white;
}

.compare-checkbox {
  border-radius: 4px;
}

.compare-checkbox.checked {
  background: #2563eb;
  color: white;
}

/* Advanced Filters */
.advanced-filters {
  background: white;
  padding: 2rem;
  border-radius: 15px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  margin-bottom: 2rem;
  display: none;
}

.advanced-filters.active {
  display: block;
}

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

.filter-label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: #1e293b;
}

.filter-range {
  width: 100%;
  margin-bottom: 0.5rem;
}

.filter-values {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
  color: #64748b;
}

/* Responsive Updates */
@media (max-width: 768px) {
  .newsletter-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

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

  .chat-window {
    width: calc(100vw - 40px);
    right: -10px;
  }

  .quick-actions {
    bottom: 80px;
    right: 10px;
  }

  .back-to-top {
    left: 10px;
  }

  .comparison-modal {
    width: 95%;
  }

  .comparison-table {
    font-size: 0.9rem;
  }

  .comparison-table th,
  .comparison-table td {
    padding: 0.5rem;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

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

  .newsletter-input-group {
    flex-direction: column;
  }

  .newsletter-benefits {
    flex-direction: column;
    align-items: center;
  }
}