/* Base Styles */
body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  margin: 0;
  padding: 2rem;
  background-color: #f9fafb;
  color: #1f2937;
}

/* Header */
h1 {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 1rem;
  color: #111827;
}

p {
  max-width: 800px;
  margin: 0 auto 1rem auto;
  line-height: 1.6;
  font-size: 1rem;
}

/* Dropdown styling */
label {
  font-weight: bold;
  display: block;
  margin-top: 2rem;
  margin-bottom: 0.5rem;
  color: #111827;
}

select {
  padding: 0.6rem 1rem;
  border-radius: 0.5rem;
  border: 1px solid #d1d5db;
  font-size: 1rem;
  background-color: white;
  color: #111827;
  box-shadow: 0 1px 2px rgba(0,0,0,0.05);
  transition: border-color 0.3s;
}

select:focus {
  border-color: #2563eb;
  outline: none;
}

/* Course card */
#course-results {
  margin-top: 2rem;
  display: grid;
  gap: 1.5rem;
}

#course-results > div {
  background-color: #ffffff;
  border-radius: 0.75rem;
  padding: 1.5rem;
  box-shadow: 0 4px 6px rgba(0,0,0,0.05);
  transition: box-shadow 0.3s;
}

#course-results > div:hover {
  box-shadow: 0 6px 12px rgba(0,0,0,0.1);
}

#course-results h3 {
  margin-top: 0;
  margin-bottom: 0.5rem;
  font-size: 1.25rem;
}

#course-results a {
  color: #2563eb;
  text-decoration: none;
}

#course-results a:hover {
  text-decoration: underline;
}

#course-results p {
  margin: 0.25rem 0;
}

/* Spinner */
.spinner {
  display: block;
  margin: 2rem auto;
  width: 40px;
  height: 40px;
  border: 5px solid #e5e7eb;
  border-top: 5px solid #2563eb;
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
}

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

.sections {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1rem;
}

/* Individual section card */
.section-card {
  background-color: #f3f4f6;
  border-radius: 0.5rem;
  padding: 1rem;
  border-left: 4px solid #2563eb;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.section-card p {
  margin: 0.25rem 0;
}

.description {
  text-align: center;
  margin: 0 auto 1rem auto;
  max-width: 800px;
}

li {
  line-height: 1.5;
}