body {
  font-family: Arial, sans-serif;
  background-color: #121212;
  color: white;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

#app {
  background-color: #1a1a1a;
  padding: 2rem;
  border-radius: 16px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
  text-align: center;
  max-width: 500px;
  width: 90%;
}

#album-title {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

#album-cover {
  display: block;
  margin: 20px auto;
  border-radius: 20px;
  max-width: 75%;
  height: auto;
  padding: 2rem;
}

#player-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
}

audio {
  width: 100%;
  max-width: 100%;
  margin-bottom: 1rem;
}

#controls {
  display: flex;
  justify-content: space-around;
  width: 100%;
  margin: 1rem 0;
}

#controls button {
  background-color: #333;
  color: white;
  border: none;
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

#controls button:hover {
  background-color: #555;
}

#tracklist {
  list-style: none;
  padding: 0;
  margin-top: 1rem;
  width: 100%;
}

#tracklist li {
  background-color: #2a2a2a;
  padding: 10px;
  border-radius: 8px;
  margin-bottom: 8px;
  cursor: pointer;
  transition: background-color 0.2s;
}

#tracklist li:hover {
  background-color: #444;
}

#tracklist li.active {
  background-color: #555;
  color: #fff;
}

.container {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 2rem;
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.banner {
  width: 300px;
  flex-shrink: 0;
}

.banner img {
  width: 100%;
  height: auto;
  border-radius: 8px;
}

main#app {
  max-width: 600px;
  width: 100%;
  text-align: center;
}

/* ============================
   MEDIA QUERY – Responsivo (tablet e celular)
   ============================ */
@media (max-width: 768px) {
body {
  padding: 10px;
  font-size: 16px;
}

.container, #main, .wrapper {
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 10px;
  max-width: 100%;
}

img, .drone-banner, .album-cover {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
}

button, .drone-button, .play-btn {
  width: 100%;
  font-size: 16px;
  padding: 12px;
}

h1, h2, h3 {
  text-align: center;
  font-size: 22px;
}

p {
  text-align: justify;
  font-size: 16px;
  max-width: 90%;
  margin: 0 auto;
  line-height: 1.5;
}

#fx-controls, .fx-section {
  flex-direction: column;
  align-items: center;
  width: 100%;
  gap: 10px;
}

#enter-drone-button {
  margin-top: 12px;
  width: 100%;
}

#drone-ui {
  padding: 10px;
  gap: 12px;
  flex-direction: column;
}

@media (max-width: 768px) {
.player-container {
  flex-direction: column;
  align-items: center;
  padding: 10px;
}

.player-controls {
  width: 100%;
  justify-content: center;
  flex-wrap: wrap;
}

.album-cover {
  width: 100%;
  max-width: 300px;
  height: auto;
  margin-bottom: 20px;
}

.player-banner {
  width: 100%;
  max-width: 100%;
  position: relative;
  top: 0;
  margin-bottom: 10px;
 }
}