:root {
  --primary: #800000;
  --secondary: #faebd7;
  --text: #333333;
  --accent: #d4af37;
  --shadow: rgba(0, 0, 0, 0.1);
  --hover-shadow: rgba(0, 0, 0, 0.15);
  --border: rgba(0, 0, 0, 0.1);
  --light-bg: #FFF2D7;
  --transition-speed: 0.3s;
  --border-radius-sm: 8px;
  --border-radius-md: 12px;
  --border-radius-lg: 25px;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
}

/* Theme variations - preserved as requested */
[data-theme="maroon"] {
  --primary: #800000;
  --secondary: #faebd7;
  --text: #333333;
  --accent: #ffffff;
  --shadow: rgba(0, 0, 0, 0.1);
  --hover-shadow: rgba(0, 0, 0, 0.15);
  --border: rgba(0, 0, 0, 0.1);
  --light-bg: rgba(255, 255, 255, 0.8);
}

[data-theme="royal"] {
  --primary: #1e3a8a;
  --secondary: #facc15;
  --accent: #ffffff;
  --text: #1a1a1a;
  --shadow: rgba(0, 0, 0, 0.1);
  --hover-shadow: rgba(0, 0, 0, 0.15);
  --border: rgba(0, 0, 0, 0.1);
  --light-bg: rgba(255, 255, 255, 0.8);
}

[data-theme="forest"] {
  --primary: #2f4f4f;
  --secondary: #e8f0fe;
  --text: #2c3e50;
  --accent: #ffffff;
  --shadow: rgba(0, 0, 0, 0.1);
  --hover-shadow: rgba(0, 0, 0, 0.15);
  --border: rgba(0, 0, 0, 0.1);
  --light-bg: rgba(255, 255, 255, 0.8);
}

/* Base styles with improved typography and defaults */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  background-color: var(--secondary);
  color: var(--text);
  line-height: 1.6;
  font-family: 'Poppins', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, sans-serif;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background-color var(--transition-speed) ease;
}

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

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

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

/* Main Content Styles with improved spacing and organization */
.main-content {
  margin: 100px auto 0;
  padding: var(--spacing-md);
  max-width: 1200px;
  width: 100%;
}

.hero-section {
  background: linear-gradient(
      rgba(255, 255, 255, 0.95),
      rgba(255, 255, 255, 0.95)
    ),
    url("https://via.placeholder.com/1200x600") center/cover no-repeat;
  border-radius: var(--border-radius-md);
  padding: var(--spacing-lg) var(--spacing-md);
  margin-bottom: var(--spacing-md);
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(45deg, rgba(var(--primary-rgb), 0.05), transparent);
  z-index: 0;
}

.hero-section h1 {
  color: var(--primary);
  font-size: clamp(2rem, 5vw, 2.5rem);
  margin-bottom: var(--spacing-sm);
  font-weight: 700;
  position: relative;
  padding-bottom: 10px;
  letter-spacing: -0.02em;
  z-index: 1;
}

.hero-section h1::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background-color: var(--accent);
  transition: width var(--transition-speed) ease;
}

.hero-section:hover h1::after {
  width: 100px;
}

.hero-section p {
  font-size: clamp(1rem, 3vw, 1.2rem);
  color: var(--text);
  max-width: 800px;
  margin: 0 auto 1.5rem;
  line-height: 1.7;
  z-index: 1;
  position: relative;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.info-card {
  background-color: white;
  border-radius: var(--border-radius-md);
  padding: var(--spacing-md);
  box-shadow: 0 4px 12px var(--shadow);
  transition: all var(--transition-speed) ease;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.info-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 5px;
  height: 0;
  background-color: var(--accent);
  transition: height var(--transition-speed) ease;
}

.info-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px var(--hover-shadow);
}

.info-card:hover::before {
  height: 100%;
}

.info-card h2 {
  color: var(--primary);
  margin-bottom: var(--spacing-sm);
  font-size: 1.5rem;
  font-weight: 600;
  position: relative;
  padding-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: transform var(--transition-speed) ease;
}

.info-card:hover h2 {
  transform: translateX(3px);
}

.info-card h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 3px;
  background-color: var(--accent);
  transition: width var(--transition-speed) ease;
}

.info-card:hover h2::after {
  width: 80px;
}

.card-icon {
  color: var(--accent);
  transition: transform var(--transition-speed) ease;
}

.info-card:hover .card-icon {
  transform: scale(1.1);
}

.course-list {
  list-style: none;
  margin-top: var(--spacing-sm);
}

.course-list li {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  transition: padding var(--transition-speed) ease;
}

.course-list li:hover {
  padding-left: 5px;
  background-color: rgba(0, 0, 0, 0.02);
}

.course-list li:before {
  content: "•";
  color: var(--accent);
  font-weight: bold;
  margin-right: 0.5rem;
  transition: transform var(--transition-speed) ease;
}

.course-list li:hover:before {
  transform: scale(1.2);
}

.course-list li:last-child {
  border-bottom: none;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--spacing-sm);
  margin-top: var(--spacing-sm);
}

.feature-item {
  background-color: var(--secondary);
  padding: 1.5rem;
  border-radius: var(--border-radius-sm);
  text-align: center;
  transition: all var(--transition-speed) ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  position: relative;
  z-index: 1;
  overflow: hidden;
}

.feature-item::before {
  content: '';
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--primary);
  z-index: -1;
  transition: top var(--transition-speed) ease;
}

.feature-item i {
  font-size: 2rem;
  color: var(--primary);
  transition: all var(--transition-speed) ease;
}

.feature-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  color: var(--secondary);
}

.feature-item:hover::before {
  top: 0;
}

.feature-item:hover i {
  color: var(--accent);
  transform: scale(1.1);
}

.affiliation-badge {
  background-color: var(--primary);
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 30px;
  display: inline-block;
  margin-top: var(--spacing-sm);
  box-shadow: 0 3px 6px var(--shadow);
  border: 2px solid var(--accent);
  transition: all var(--transition-speed) ease;
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.affiliation-badge::before {
  content: '';
  position: absolute;
  left: -100%;
  top: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  z-index: -1;
  transition: left 0.5s ease;
}

.affiliation-badge:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 12px var(--shadow);
}

.affiliation-badge:hover::before {
  left: 100%;
}

/* Theme Switcher - preserved as requested */
.theme-switcher {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background-color: var(--accent);
  padding: 0.5rem;
  border-radius: 25px;
  box-shadow: 0 4px 15px var(--shadow);
  z-index: 100;
  transition: transform var(--transition-speed) ease;
}

.theme-switcher:hover {
  transform: translateY(-3px);
}

.theme-button {
  padding: 0.5rem 1rem;
  margin: 0 0.25rem;
  border: none;
  border-radius: 15px;
  cursor: pointer;
  transition: all var(--transition-speed) ease;
  font-weight: 500;
  position: relative;
  overflow: hidden;
}

.theme-button::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background-color: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.4s ease, height 0.4s ease;
}

.theme-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 3px 8px var(--shadow);
}

.theme-button:hover::before {
  width: 150%;
  height: 150%;
}

.theme-button.active {
  outline: 2px solid white;
  outline-offset: 2px;
}

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

.main-content {
  animation: fadeIn 0.5s ease forwards;
}

.info-card {
  opacity: 0;
  animation: fadeIn 0.5s ease forwards;
}

.info-card:nth-child(1) { animation-delay: 0.1s; }
.info-card:nth-child(2) { animation-delay: 0.2s; }
.info-card:nth-child(3) { animation-delay: 0.3s; }
.info-card:nth-child(4) { animation-delay: 0.4s; }

/* Enhanced focus states for accessibility */
button:focus, a:focus {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

/* Improved Responsive styles */
@media (max-width: 992px) {
  .info-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }
  
  .main-content {
    padding: var(--spacing-sm);
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
  }
  
  .info-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
  }

  .hero-section {
    padding: var(--spacing-md) var(--spacing-sm);
  }

  .theme-switcher {
    bottom: 1rem;
    right: 1rem;
    padding: 0.25rem;
  }

  .theme-button {
    padding: 0.4rem 0.8rem;
    margin: 0 0.1rem;
    font-size: 0.9rem;
  }
  
  .info-card {
    padding: var(--spacing-sm);
  }
}

@media (max-width: 600px) {
  .features-grid {
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
  }
  
  .feature-item {
    padding: 1rem;
  }
  
  .feature-item i {
    font-size: 1.5rem;
  }
  
  .hero-section h1::after {
    width: 40px;
  }
  
  .hero-section:hover h1::after {
    width: 70px;
  }
  
  .affiliation-badge {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
  }
}

/* Print styles for better document printing */
@media print {
  .theme-switcher {
    display: none;
  }
  
  body {
    background-color: white;
    color: black;
  }
  
  .main-content {
    margin-top: 0;
  }
  
  .info-card, .hero-section {
    box-shadow: none;
    border: 1px solid #ddd;
  }
}