/* General Body and Typography */
@import url("https://fonts.googleapis.com/css2?family=Work+Sans:wght@300;400;500;600;700&display=swap");

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

body {
  font-family: "Work Sans", sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  color: #333;
  line-height: 1.6;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header Styles */
.header {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(15px);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo i {
  color: #667eea;
  font-size: 2rem;
}

.logo h1,
.footer-logo h3,
.footer-bottom-content p {
  font-family: "Work Sans", sans-serif;
}

.logo h1 {
  color: #667eea;
  font-size: 1.8rem;
  font-weight: 700;
}

.nav {
  display: flex;
  gap: 2rem;
  transition: all 0.3s ease;
}

.nav-link {
  text-decoration: none;
  color: #666;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.5rem 1rem;
  border-radius: 25px;
  transition: all 0.3s ease;
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: #667eea;
  background: rgba(102, 126, 234, 0.1);
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 4px;
  padding: 10px;
  z-index: 1001;
}

.mobile-menu-btn span {
  width: 25px;
  height: 3px;
  background: #667eea;
  border-radius: 2px;
  transition: 0.3s;
}

.mobile-menu-btn.active span:nth-child(1) {
  transform: rotate(-45deg) translate(-5px, 6px);
}

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

.mobile-menu-btn.active span:nth-child(3) {
  transform: rotate(45deg) translate(-5px, -6px);
}

/* Content Sections */
.content-section {
  display: none;
}

.content-section.active {
  display: block;
}

/* Main Content */
.main {
  padding: 2rem 0;
}

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

.page-header h2 {
  color: white;
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.page-header p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.2rem;
  margin-bottom: 2rem;
}

.tabs {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2rem;
}

.tab {
  background: rgba(255, 255, 255, 0.2);
  border: none;
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 25px;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.tab:hover,
.tab.active {
  background: rgba(255, 255, 255, 0.9);
  color: #667eea;
  transform: translateY(-2px);
}

/* Filters Section */
.filters-section {
  background: rgba(255, 255, 255, 0.95);
  padding: 2rem;
  border-radius: 20px;
  backdrop-filter: blur(15px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  margin-bottom: 2rem;
}

.search-container {
  position: relative;
  margin-bottom: 1.5rem;
}

.search-container i {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: #666;
}

#searchInput {
  width: 100%;
  padding: 1rem 1rem 1rem 3rem;
  border: 2px solid #e1e5e9;
  border-radius: 15px;
  background: white;
  font-size: 1rem;
  font-weight: 500;
  transition: all 0.3s ease;
}

#searchInput:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

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

.filter-select {
  padding: 0.75rem 1rem;
  border: 2px solid #e1e5e9;
  border-radius: 12px;
  background: white;
  font-weight: 600;
  color: #666;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 0.9rem;
  font-family: "Work Sans", sans-serif;
}

.filter-select:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* Results Info */
.results-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  background: rgba(255, 255, 255, 0.9);
  padding: 1rem 1.5rem;
  border-radius: 15px;
  backdrop-filter: blur(10px);
}

#resultsCount {
  color: #666;
  font-weight: 600;
}

.view-toggle {
  display: flex;
  gap: 0.5rem;
}

.view-btn {
  background: transparent;
  border: 2px solid #e1e5e9;
  color: #666;
  padding: 0.5rem 1rem;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: "Work Sans", sans-serif;
  font-size: 0.9rem;
}

.view-btn:hover,
.view-btn.active {
  background: #667eea;
  color: white;
  border-color: #667eea;
}

/* Schedule Container */
.schedule-container {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 20px;
  padding: 2rem;
  backdrop-filter: blur(15px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  min-height: 500px;
}

.timeline-view,
.grid-view {
  display: none;
}

.timeline-view.active,
.grid-view.active {
  display: block;
}

/* Timeline Styles */
.timeline {
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 30px;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(to bottom, #667eea, #764ba2);
  border-radius: 2px;
}

.timeline-item {
  position: relative;
  margin-bottom: 3rem;
  padding-left: 4rem;
}

.timeline-date {
  position: absolute;
  left: -2rem;
  top: 1rem;
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 700;
  text-align: center;
  min-width: 120px;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
  z-index: 10;
}

.timeline-date::after {
  content: "";
  position: absolute;
  right: -12px;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  background: white;
  border: 4px solid #667eea;
  border-radius: 50%;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

/* Course Cards */
.course-card {
  background: white;
  border-radius: 20px;
  padding: 2rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
  border: 1px solid #f0f0f0;
  position: relative;
  overflow: hidden;
}

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

.course-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
}

.course-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.5rem;
}

.course-category {
  background: rgba(102, 126, 234, 0.1);
  color: #667eea;
  padding: 0.4rem 1rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
}

.course-level {
  padding: 0.4rem 1rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
}

.level-beginner {
  background: rgba(34, 197, 94, 0.1);
  color: #22c55e;
}

.level-intermediate {
  background: rgba(251, 191, 36, 0.1);
  color: #fbbf24;
}

.level-advanced {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
}

.course-title {
  margin-bottom: 1rem;
}

.course-title h3 {
  color: #333;
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  line-height: 1.3;
}

.course-subtitle {
  color: #666;
  font-size: 1rem;
  font-weight: 500;
}

.instructor-section {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
  padding: 1rem;
  background: #f8f9fa;
  border-radius: 15px;
}
/* General responsive image styling for instructor photo */
.instructor-photo img {
  width: 400px; /* Important: Maintain aspect ratio */
  height: 500px; /* Or whatever border-radius you desire */
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

@media (max-width: 480px) {
  /* Adjust overall container padding for very small screens */
  .schedule-container,
  .filters-section,
  .syllabus-container,
  .instructor-container {
    padding: 1rem; /* Reduce overall padding for compact layout */
  }

  /* Specific adjustments for the instructor profile itself */
  .instructor-profile {
    padding: 1rem; /* Reduce internal padding of the profile card */
    gap: 1rem; /* Adjust spacing between elements */
  }

  /* Adjust the instructor photo image size */
  .instructor-photo img {
    max-width: 300px; /* Even smaller image for tiny screens */
    height: 300; /* Maintain aspect ratio */
  }

  /* Adjust the large avatar if it's used for the main profile picture */
  .instructor-avatar-large {
    width: 100px; /* Reduced width for very small screens */
    height: 100px; /* Reduced height for very small screens */
    font-size: 2rem; /* Smaller font size for avatar text/icon */
  }

  /* Adjust text sizes for readability on very small screens */
  .instructor-details h2 {
    font-size: 1.6rem; /* Smaller heading for the instructor's name */
  }

  .instructor-details h3 {
    font-size: 0.9rem; /* Smaller sub-heading */
    margin-bottom: 0.8rem; /* Reduced margin */
  }

  .instructor-bio p {
    font-size: 0.85rem; /* Smaller bio text for readability */
  }

  /* Stack instructor stats vertically for better fit */
  .instructor-stats {
    grid-template-columns: 1fr; /* Force stats to stack one per row */
    gap: 0.5rem; /* Smaller gap between stacked stats */
    padding: 0.8rem; /* Reduced padding for the stats section */
  }

  .stat-number {
    font-size: 1.4rem; /* Smaller numbers for stats */
  }

  .stat-label {
    font-size: 0.75rem; /* Smaller labels for stats */
  }

  /* Ensure contact methods stack vertically and buttons are full width */
  .contact-methods {
    flex-direction: column; /* Stack contact buttons one below another */
    gap: 0.5rem; /* Small gap between stacked buttons */
  }

  .contact-btn {
    width: 100%; /* Make contact buttons take full available width */
    justify-content: center; /* Center the text within the buttons */
  }

  /* Ensure social links are centered */
  .social-links {
    justify-content: center;
  }
}
.instructor-avatar {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.instructor-info h4 {
  color: #333;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.2rem;
}

.instructor-title {
  color: #666;
  font-size: 0.9rem;
  font-weight: 500;
}

.course-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: #666;
  font-size: 0.9rem;
  font-weight: 500;
}

.meta-item i {
  color: #667eea;
  width: 16px;
}

.course-stats {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  padding: 1rem;
  background: #f8f9fa;
  border-radius: 15px;
}

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

.stat-value {
  display: block;
  color: #333;
  font-size: 1.2rem;
  font-weight: 700;
}

.stat-label {
  color: #666;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
}

.progress-bar {
  width: 100%;
  height: 8px;
  background: #e1e5e9;
  border-radius: 4px;
  overflow: hidden;
  margin-top: 0.5rem;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #667eea, #764ba2);
  border-radius: 4px;
  transition: width 0.3s ease;
}

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

.price-tag {
  font-size: 1.5rem;
  font-weight: 700;
  color: #333;
}

.price-tag .currency {
  font-size: 1rem;
  color: #666;
}

.btn-secondary,
.btn-primary {
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  font-family: "Work Sans", sans-serif;
}

.btn-secondary {
  background: #f8f9fa;
  color: #666;
  border: 2px solid #e1e5e9;
}

.btn-secondary:hover {
  background: #e9ecef;
  color: #333;
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: white;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.btn-primary:disabled {
  background: #ccc;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* Grid View */
.course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
  gap: 2rem;
}

/* Syllabus Section Styles */
.syllabus-container {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 20px;
  padding: 2rem;
  backdrop-filter: blur(15px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

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

.syllabus-card {
  background: white;
  border-radius: 20px;
  padding: 2rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
  border: 1px solid #f0f0f0;
  position: relative;
  overflow: hidden;
}

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

.syllabus-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
}

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

.syllabus-header i {
  font-size: 2rem;
  color: #667eea;
}

.syllabus-header h3 {
  color: #333;
  font-size: 1.4rem;
  font-weight: 700;
}

.syllabus-card p {
  color: #666;
  margin-bottom: 2rem;
  line-height: 1.6;
}

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

/* Instructor Section Styles */
.instructor-container {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 20px;
  padding: 3rem;
  backdrop-filter: blur(15px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.instructor-profile {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 3rem;
  align-items: start;
}

.instructor-photo {
  display: flex;
  justify-content: center;
}

.instructor-avatar-large {
  width: 200px;
  height: 200px;
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: white;
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 4rem;
  box-shadow: 0 20px 50px rgba(102, 126, 234, 0.3);
}

.instructor-details h2 {
  color: #333;
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.instructor-details h3 {
  color: #667eea;
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 2rem;
}

.instructor-bio {
  margin-bottom: 2rem;
}

.instructor-bio p {
  color: #666;
  font-size: 1.1rem;
  line-height: 1.7;
}

.instructor-expertise {
  margin-bottom: 2rem;
}

.instructor-expertise h4 {
  color: #333;
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.expertise-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.expertise-tag {
  background: rgba(102, 126, 234, 0.1);
  color: #667eea;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 600;
}

.instructor-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
  padding: 2rem;
  background: #f8f9fa;
  border-radius: 15px;
}

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

.stat-number {
  display: block;
  color: #667eea;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.stat-label {
  color: #666;
  font-size: 0.9rem;
  font-weight: 600;
}

.instructor-contact h4 {
  color: #333;
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.contact-methods {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.contact-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: white;
  text-decoration: none;
  border-radius: 12px;
  font-weight: 600;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.contact-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

/* Modal Styles */
.modal {
  display: none;
  position: fixed;
  z-index: 2000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(5px);
}

.modal-content {
  background-color: white;
  margin: 2% auto;
  padding: 0;
  border-radius: 20px;
  width: 90%;
  max-width: 800px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(-50px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.close {
  position: absolute;
  right: 1rem;
  top: 1rem;
  color: #666;
  font-size: 2rem;
  font-weight: bold;
  cursor: pointer;
  z-index: 10;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.9);
  transition: all 0.3s ease;
}

.close:hover {
  background: #f0f0f0;
  color: #333;
}

.modal-header {
  padding: 2rem;
  border-bottom: 1px solid #f0f0f0;
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: white;
  border-radius: 20px 20px 0 0;
}

.modal-header h2 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.modal-badges {
  display: flex;
  gap: 1rem;
}

.modal-badges .badge {
  background: rgba(255, 255, 255, 0.2);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}

.modal-body {
  padding: 2rem;
}

.instructor-info {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 2rem;
  padding: 1.5rem;
  background: #f8f9fa;
  border-radius: 15px;
}

.instructor-info h4 {
  color: #333;
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.3rem;
}

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

.detail-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem;
  background: #f8f9fa;
  border-radius: 12px;
  font-weight: 500;
}

.detail-item i {
  color: #667eea;
  width: 20px;
}

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

.course-description h4,
.course-curriculum h4 {
  color: #333;
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.course-description p {
  color: #666;
  line-height: 1.7;
}

.course-curriculum ul {
  list-style: none;
  padding: 0;
}

.course-curriculum li {
  padding: 0.5rem 0;
  color: #666;
  position: relative;
  padding-left: 1.5rem;
}

.course-curriculum li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: #22c55e;
  font-weight: bold;
}

.modal-footer {
  padding: 2rem;
  border-top: 1px solid #f0f0f0;
  display: flex;
  gap: 1rem;
  justify-content: flex-end;
}

/* Footer Styles */
.footer {
  background: linear-gradient(135deg, #2d3748 0%, #1a202c 100%);
  color: white;
  margin-top: 4rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  padding: 3rem 0;
}

.footer-section h3,
.footer-section h4 {
  margin-bottom: 1.5rem;
  color: white;
  font-family: "Work Sans", sans-serif;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.footer-logo i {
  color: #667eea;
  font-size: 2rem;
}

.footer-logo h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0;
}

.footer-description {
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.6;
  margin-bottom: 2rem;
  font-family: "Work Sans", sans-serif;
}

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

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  color: white;
  border-radius: 50%;
  text-decoration: none;
  transition: all 0.3s ease;
}

.social-link:hover {
  background: #667eea;
  transform: translateY(-2px);
}

.footer-links {
  list-style: none;
  padding: 0;
}

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

.footer-links a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: color 0.3s ease;
  font-family: "Work Sans", sans-serif;
}

.footer-links a:hover {
  color: #667eea;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: rgba(255, 255, 255, 0.8);
  font-family: "Work Sans", sans-serif;
}

.contact-item i {
  color: #667eea;
  width: 20px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 2rem 0;
}

.footer-bottom-content {
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  flex-wrap: nowrap;
  gap: 2rem; /* Increased gap */
  /* Remove display: inline; */
  text-align: center;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .course-grid {
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
  }

  .instructor-profile {
    grid-template-columns: 1fr;
    gap: 2rem;
    text-align: center;
  }
}

@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(15px);
    flex-direction: column;
    padding: 2rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
  }

  .nav.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .page-header h2 {
    font-size: 2.2rem;
  }

  .tabs {
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .tab {
    padding: 0.6rem 1rem;
    font-size: 0.8rem;
  }

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

  .results-info {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .timeline {
    padding-left: 1rem;
  }

  .timeline::before {
    left: 15px;
  }

  .timeline-item {
    padding-left: 2.5rem;
  }

  .timeline-date {
    left: -3rem;
    min-width: 100px;
    font-size: 0.7rem;
    padding: 0.4rem 0.8rem;
  }

  .course-card {
    padding: 1.5rem;
  }

  .course-header {
    flex-direction: column;
    gap: 1rem;
    align-items: flex-start;
  }

  .course-meta {
    grid-template-columns: 1fr;
  }

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

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

  .modal-footer .btn-primary,
  .modal-footer .btn-secondary {
    width: 100%;
  }

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

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

  .instructor-avatar-large {
    width: 150px;
    height: 150px;
    font-size: 3rem;
  }

  .instructor-details h2 {
    font-size: 2rem;
  }

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

  .modal-content {
    width: 95%;
    margin: 5% auto;
  }

  .modal-header,
  .modal-body,
  .modal-footer {
    padding: 1.5rem;
  }

  .course-details {
    grid-template-columns: 1fr;
  }

  .modal-footer {
    flex-direction: column;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: 2rem;
    text-align: center;
  }

  .footer-bottom-content {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 15px;
  }

  .schedule-container,
  .filters-section,
  .syllabus-container,
  .instructor-container {
    padding: 1rem;
  }

  .course-card,
  .syllabus-card {
    padding: 1rem;
  }

  .instructor-section {
    flex-direction: column;
    text-align: center;
  
  }

  .social-links {
    justify-content: center;
  }

  .instructor-avatar-large {
    width: 120px;
    height: 120px;
    font-size: 2.5rem;
  }

  .contact-methods {
    flex-direction: column;
  }

  .contact-btn {
    justify-content: center;
  }

   .instructor-info {
    flex-direction: column; /* stack vertically */
    align-items: center;    /* center align */
    text-align: center;     /* text also center */
  }

  .instructor-info h4 {
    font-size: 1.1rem;
    margin-bottom: 0.2rem;
  }

  .instructor-info p {
    font-size: 0.9rem;
    color: #555; /* little lighter than name */
    margin: 0;
  }
}

/* Animation Classes */
.fade-in {
  animation: fadeIn 0.5s ease-in-out;
}

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

.hidden {
  display: none !important;
}

/* Loading Animation */
.loading {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 200px;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid #f3f3f3;
  border-top: 4px solid #667eea;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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