#music-player-section {
  margin: 20px 0;
  display: flex;
  justify-content: center;
}

#music-player {
  display: flex;
  align-items: center;
  gap: 15px;
  max-width: 400px;
  width: 100%;
  padding: 15px 20px;
  border-radius: 12px;
  background: rgba(20, 20, 20, 0.8);
  backdrop-filter: blur(8px);
  box-shadow: 0 0 15px rgba(255,255,255,0.1);
  transition: box-shadow 0.3s ease;
}

#music-player:hover {
  box-shadow: 0 0 25px rgba(30,255,112,0.3);
}

#play-pause {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-color, #fff);
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease, color 0.2s ease;
}

#play-pause:hover {
  transform: scale(1.3);
  color: #1ED760;
}

#play-pause:disabled {
  cursor: not-allowed;
  color: var(--text-muted, #777);
}

#play-icon,
#pause-icon,
#replay-icon {
  width: 28px;
  height: 28px;
  fill: currentColor;
}

#progress-container {
  position: relative;
  flex: 1;
  height: 8px;
  background-color: var(--background-4, #333);
  border-radius: 4px;
  cursor: pointer;
}

#progress {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, #1DB954, #1ED760);
  border-radius: 4px;
  transition: width 0.1s linear;
}

#thumb {
  position: absolute;
  top: 50%;
  left: 0;
  width: 16px;
  height: 16px;
  background-color: #1ED760;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: left 0.1s linear;
}

#time {
  font-size: 0.85rem;
  color: var(--text-muted, #bbb);
  min-width: 65px;
  text-align: right;
}

/* --- Responsive --- */
@media screen and (max-width: 540px) {
  #music-player { gap: 12px; padding: 12px 15px; }
  #progress-container { height: 10px; }
  #thumb { width: 18px; height: 18px; }
}

@media screen and (max-width: 400px) {
  #music-player { gap: 10px; padding: 10px 12px; }
  #progress-container { height: 12px; }
  #thumb { width: 20px; height: 20px; }
}