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

body {
  font-family: 'Segoe UI', sans-serif;
  background-color: #f9fafb;
  color: #111827;
  line-height: 1.6;
}

header, footer {
  background-color: #1e3a8a;
  color: white;
  padding: 1rem;
  text-align: center;
}

.btn {
  background-color: #2563eb;
  color: white;
  padding: 10px 15px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  margin-top: 10px;
}

.course-section {
  padding: 2rem;
  text-align: center;
}

.course-card {
  background: white;
  padding: 1rem;
  border-radius: 10px;
  margin: 1rem auto;
  width: 90%;
  max-width: 400px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  transition: transform 0.2s ease;
}

.course-card:hover {
  transform: scale(1.03);
}

/* Form Styling */
.form-section {
  text-align: center;
  padding: 2rem;
}

.form-section input {
  padding: 10px;
  margin: 10px;
  width: 250px;
  border-radius: 6px;
  border: 1px solid #ccc;
}

/* 🌙 Dark Mode */
body.dark-mode {
  background-color: #111827;
  color: #f3f4f6;
}

body.dark-mode .course-card {
  background: #1f2937;
}

body.dark-mode header,
body.dark-mode footer {
  background: #1e40af;
}

body.dark-mode nav a,
body.dark-mode .btn {
  color: #f3f4f6;
}