.alphabet-section {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 80px 0;
  background-color: #ffffff;
}

.alphabet-container {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.alphabet-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(60px, 1fr));
  gap: 16px;
  max-width: 1000px;
  margin-bottom: 0 auto 16px auto;
  justify-content: center;
}

.letter-btn {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  border: none;
  background: linear-gradient(to bottom, var(--cor-2), var(--cor-p1));
  color: #e0eff5;
  font-size: 1.5rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: "Montserrat", sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
}

.letter-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.letter-btn.active {
  background: linear-gradient(to bottom, #0066cc, #004a99);
  box-shadow: 0 6px 12px rgba(0, 102, 204, 0.4);
}

/* Exams Section */
.exams-section {
  padding: 3rem 2rem;
  background-color: #f9f9f9;
}

.exams-container {
  max-width: 1200px;
  margin: 0 auto;
}

.exams-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 2rem;
  color: #333;
}

.exams-content {
  background-color: white;
  border-radius: 8px;
  padding: 2rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.exams-placeholder {
  text-align: center;
  padding: 3rem 2rem;
  color: #999;
  font-size: 1.1rem;
}

.exams-list {
  display: none;
}

.exams-list.active {
  display: block;
}

.exams-list-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: #333;
}

.exams-list-title .letter {
  color: #0066cc;
}

.exam-item {
  padding: 1rem;
  margin-bottom: 0.5rem;
  background-color: #f5f5f5;
  border-left: 4px solid #0066cc;
  border-radius: 4px;
  transition: background-color 0.3s ease;
}

@media (max-width: 768px) {
  .alphabet-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(55px, auto));
    justify-content: center;
    gap: 0.8rem;
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
  }

  .letter-btn {
    width: 55px;
    height: 55px;
    font-size: 1.2rem;
  }

  .exams-content {
    padding: 1.5rem;
  }

  .exams-list-title {
    font-size: 1.2rem;
  }

  .exam-item {
    padding: 0.75rem;
    font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  .alphabet-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(45px, auto));
    justify-content: center;
    gap: 0.6rem;
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
  }

  .letter-btn {
    width: 45px;
    height: 45px;
    font-size: 1rem;
  }

  .alphabet-section {
    padding: 60px 0;
  }

  .exams-section {
    padding: 1.5rem 1rem;
  }

  .exams-title {
    font-size: 1.5rem;
  }
}