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

body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
}

header {
  background: #2c3e50;
  color: white;
  text-align: center;
  padding: 2rem;
}

.profile {
  padding: 2rem;
  max-width: 800px;
  margin: 0 auto;
}

.profile-container {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.profile-image {
  flex-shrink: 0;
}

.profile-image img {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid #2c3e50;
}

.syllabus-cards {
  padding: 2rem;
  background: #f5f6fa;
}

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

.card-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.card {
  background: white;
  padding: 1.5rem;
  border-radius: 10px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.card h3 {
  color: #2c3e50;
  margin-bottom: 1rem;
}

.card ul {
  list-style-position: inside;
}

.whatsapp-btn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 100;
}

.whatsapp-btn a {
  display: block;
  width: 60px;
  height: 60px;
  background: #25D366;
  border-radius: 50%;
  text-align: center;
  line-height: 60px;
  color: white;
  font-size: 30px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.popup {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
}

.popup-content {
  position: relative;
  background: white;
  width: 90%;
  max-width: 400px;
  margin: 20vh auto;
  padding: 2rem;
  border-radius: 10px;
  text-align: center;
}

.close-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  font-size: 24px;
  cursor: pointer;
  color: #666;
}

.whatsapp-link {
  display: inline-block;
  background: #25D366;
  color: white;
  padding: 10px 20px;
  border-radius: 5px;
  text-decoration: none;
  margin-top: 1rem;
}

.whatsapp-link i {
  margin-right: 5px;
}
.responsive-image {
  width: 70vw;
  height: auto;
}

@media (min-width: 768px) {
  .responsive-image {
    width: auto;
    height: 30vh;
  }
}