/* ===== Estilo Geral ===== */
body {
  font-family: Arial, sans-serif;
  background: #f4f4f4;
  margin: 0;
  padding: 0;
  text-align: center;
}

header {
  background: #222;
  color: white;
  padding: 20px 0;
  font-size: 24px;
}

/* ===== Menu de navegação ===== */
nav {
  background: #444;
  display: flex;
  justify-content: center;
  gap: 20px;
  padding: 10px 0;
}

nav button {
  background: #fff;
  border: none;
  padding: 10px 20px;
  cursor: pointer;
  border-radius: 5px;
  transition: 0.3s;
  font-weight: bold;
}

nav button:hover {
  background: #007bff;
  color: white;
}

/* ===== Container de botões ===== */
#container {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

/* ===== Botões de áudio ===== */
.audio-btn, .folder-btn {
  border: none;
  padding: 10px 20px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  transition: 0.3s;
  color: white;
}

/* Áudio = azul */
.audio-btn {
  background: #007bff;
}

.audio-btn:hover {
  background: #0056b3;
}

/* Pasta = verde */
.folder-btn {
  background: #28a745;
}

.folder-btn:hover {
  background: #1e7e34;
}

/* Botão Voltar */
#voltar {
  display: none;
  background: #ff9800;
  color: white;
  border: none;
  padding: 8px 15px;
  border-radius: 6px;
  cursor: pointer;
  margin-bottom: 10px;
}