.credit {
  font-size: 10px;
  font-style: italic;
  /* You might also want to add some margin, for example: */
  /* margin-top: 4px; */
  /* margin-bottom: 16px; */
  /* text-align: center; /* If you want it centered */
}
#lesson-controls {
  margin-top: 24px;
  padding-bottom: 10vh;
}

body {
  margin: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f4f6f8;
  color: #333;
  padding: 40px 20px;
}

.container {
  max-width: 960px;
  margin: auto;
  background-color: #ffffff;
  border-radius: 12px;
  padding: 40px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.05);
}

h1 {
  font-size: 40px;
  color: #0d47a1;
  text-align: center;
  margin-bottom: 40px;
}

h2 {
  font-size: 24px;
  color: #1565c0;
  border-bottom: 2px solid #e3f2fd;
  padding-bottom: 10px;
  margin-top: 48px;
}

ul.vocab-list {
  list-style: none;
  padding-left: 0;
  margin-top: 20px;
}

ul.vocab-list li {
  background-color: #f1f8ff;
  border: 1px solid #dbe9f4;
  padding: 14px 20px;
  margin-bottom: 10px;
  border-radius: 8px;
}

.term {
  font-weight: 600;
  color: #0d47a1;
}

.reading,
.dialogue {
  background-color: #fafafa;
  border: 1px solid #e0e0e0;
  padding: 24px;
  border-radius: 8px;
  margin-top: 20px;
  line-height: 1.7;
}

.exchange {
  margin-bottom: 16px;
}

.speaker {
  font-weight: 600;
  color: #1565c0;
}
.footer {
    text-align: center;
}