.sub-header {
  background: #2196f3;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 15px;
  position: relative;
}

.sub-header .back-btn {
  color: white;
  text-decoration: none;
  font-size: 28px;
  position: absolute;
  left: 15px;
  top: 50%;
  transform: translateY(-50%);
}

.sub-header h1 {
  font-size: 22px;
  margin: 0;
}

.intro {
  padding: 20px;
  text-align: center;
}

.intro p {
  font-size: 15px;
  color: #333;
  line-height: 1.6;
}

.list-pertanyaan {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.pertanyaan {
  background: white;
  padding: 15px;
  border-radius: 8px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.pertanyaan h3 {
  margin-bottom: 10px;
  font-size: 16px;
  color: #333;
}

.btn-jawab {
  display: inline-block;
  padding: 6px 12px;
  background: #2196f3;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  margin-bottom: 10px;
}

.btn-jawab:hover {
  background: #1976d2;
}

.jawaban {
  display: none;
  font-size: 14px;
  color: #555;
  margin-top: 5px;
}

.doa-belajar {
  padding: 20px;
  background: #f9f9f9;
  border-radius: 10px;
  margin: 20px;
  text-align: center;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.doa-belajar h2 {
  font-size: 18px;
  color: #2196f3;
  margin-bottom: 10px;
}

.doa-belajar p {
  margin: 5px 0;
  font-size: 14px;
  color: #333;
}

.search-box {
  text-align: center;
  margin: 15px 0;
}

.search-box input {
  padding: 8px 12px;
  font-size: 14px;
  width: 250px;
  max-width: 90%;
  border: 1px solid #ccc;
  border-radius: 5px;
}