body {
  font-family: Arial, sans-serif;
  background: #f4f4f4;
  margin: 0;
  padding: 20px;
}

.container {
  max-width: 900px;
  margin: auto;
  background: #fff;
  padding: 20px;
  border-radius: 10px;
}

form label {
  display: block;
  margin: 10px 0 5px;
}

form input, form textarea {
  width: 100%;
  padding: 8px;
  margin-bottom: 10px;
}

button {
  padding: 10px 15px;
  margin-top: 5px;
  cursor: pointer;
}

.lesson-card {
  background: #e8f0fe;
  padding: 15px;
  margin: 10px 0;
  border-left: 5px solid #1a73e8;
  border-radius: 5px;
}

.lesson-card h3 {
  margin-top: 0;
}

.lesson-card button {
  margin-right: 10px;
}

.filter-section {
  margin-top: 20px;
}
#lessonList {
  margin-top: 40px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Enhanced Lesson Card Aesthetic */
.lesson-card {
  background: linear-gradient(145deg, #ffffff, #f0f4f8);
  border-radius: 16px;
  padding: 20px 25px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.06);
  border-left: 6px solid #4a90e2;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.lesson-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);
}

.lesson-card h3 {
  margin-top: 0;
  font-size: 1.25rem;
  color: #2c3e50;
}

.lesson-card p {
  margin: 6px 0;
  color: #555;
  line-height: 1.5;
}

.lesson-card p strong {
  color: #333;
}

.lesson-card {
  animation: fadeInUp 0.4s ease;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}