/* Basic reset and body styling */
body {
  margin: 0;
  font-family: 'Arial', sans-serif;
  background-color: #121212; /* Dark background for the player */
  color: #fff; /* White text color */
  overflow: hidden; /* Prevent scrollbar due to transitions */
}

/* Header styling */
header {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 15px;
  background-color: #1db954; /* Spotify Green */
  font-size: 1.5em;
  font-weight: bold;
  color: #fff;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5); /* Subtle shadow */
}

.header-logo {
  height: 30px; /* Size for the logo */
  margin-right: 10px;
}

/* Main container for layout */
.container {
  display: flex;
  height: calc(100vh - 65px); /* Full viewport height minus header height */
}

/* Playlist sidebar styling */
aside#playlist {
  width: 280px;
  background-color: #000000; /* Even darker for playlist sidebar */
  padding: 20px;
  transition: transform 0.3s ease-in-out; /* Smooth transition for hiding/showing */
  box-shadow: 2px 0 10px rgba(0, 0, 0, 0.5);
  flex-shrink: 0; /* Prevent shrinking when main content expands */
}

/* Class to hide the playlist */
aside#playlist.hidden {
  transform: translateX(-100%); /* Move off-screen to the left */
  position: absolute; /* Allows main content to take full width */
}

aside h3 {
  color: #1db954;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
}

aside h3 .material-icons {
    margin-right: 8px; /* Spacing for icon in heading */
}

aside ul {
  list-style: none;
  padding: 0;
}

aside li {
  padding: 12px 10px;
  margin-bottom: 5px;
  cursor: pointer;
  border-radius: 5px;
  transition: background-color 0.2s ease, color 0.2s ease;
  font-size: 0.95em;
  color: #b3b3b3; /* Lighter grey for inactive songs */
  display: flex;
  align-items: center;
  justify-content: space-between; /* To push duration to the right */
}

aside li:hover {
  background-color: #282828; /* Darker grey on hover */
  color: #fff;
}

/* Styling for the currently active song in the playlist */
aside li.active {
  background-color: #1db954; /* Spotify Green for active song */
  color: #fff;
  font-weight: bold;
}

aside li .song-duration {
    font-size: 0.8em;
    color: #808080;
}

aside li.active .song-duration {
    color: #e0e0e0;
}

/* Main content area styling */
main {
  flex: 1; /* Takes remaining space */
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  background: linear-gradient(to bottom, #282828, #121212); /* Subtle gradient background */
}

/* Toggle playlist button */
#togglePlaylist {
  position: absolute;
  top: 20px;
  left: 20px;
  background: #1db954;
  color: #fff;
  border: none;
  padding: 10px;
  border-radius: 5px;
  cursor: pointer;
  font-size: 1.5em;
  line-height: 1; /* For material icons */
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10; /* Ensure it's above other elements */
  transition: background-color 0.2s ease;
}

#togglePlaylist:hover {
  background-color: #1ed760; /* Lighter green on hover */
}

/* Album art thumbnail */
.thumbnail {
  margin-bottom: 30px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.8);
  border-radius: 50%; /* For the rotation effect */
}

.thumbnail img {
  width: 250px;
  height: 250px;
  border-radius: 50%;
  object-fit: cover; /* Ensures image covers the area without distortion */
  animation: rotate 20s linear infinite; /* Slower rotation */
  animation-play-state: paused; /* Pause initially */
  border: 5px solid #333; /* Border around the album art */
}

/* Resume animation when song is playing */
.thumbnail img.playing {
  animation-play-state: running;
}

/* Keyframe for album art rotation */
@keyframes rotate {
  100% {
    transform: rotate(360deg);
  }
}

/* Song info (title and artist) */
.info {
  text-align: center;
  margin-bottom: 30px;
}

.info h2 {
  font-size: 2.5em;
  margin-bottom: 5px;
  color: #fff;
}

.info p {
  font-size: 1.2em;
  color: #b3b3b3;
}

/* Progress and Volume containers */
.progress-container,
.volume-container {
  width: 80%;
  max-width: 500px; /* Max width for sliders */
  display: flex;
  align-items: center;
  margin-bottom: 20px;
}

.progress-container span,
.volume-container span {
  font-size: 0.9em;
  color: #b3b3b3;
  width: 40px; /* Fixed width for time display */
  text-align: center;
}

/* Styling for range input (sliders) */
input[type="range"] {
  width: 100%;
  height: 8px;
  background: #535353; /* Darker grey track */
  border-radius: 5px;
  outline: none;
  margin: 0 15px;
}

/* Slider thumb styling (for Webkit browsers) */
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #1db954; /* Spotify Green thumb */
  cursor: grab;
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.5);
  transition: background-color 0.2s ease;
}

/* Slider thumb styling (for Firefox) */
input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #1db954;
  cursor: grab;
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.5);
  transition: background-color 0.2s ease;
}

input[type="range"]::-webkit-slider-thumb:active,
input[type="range"]::-moz-range-thumb:active {
    cursor: grabbing; /* Cursor when dragging */
}

/* Control buttons styling */
.controls {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 30px;
}

.controls button {
  background: none;
  border: none;
  color: #fff;
  cursor: pointer;
  font-size: 2.5em; /* Larger icons */
  margin: 0 15px;
  padding: 5px;
  border-radius: 50%;
  transition: color 0.2s ease, transform 0.2s ease;
  line-height: 1; /* For material icons to align correctly */
}

.controls button:hover {
  color: #1db954; /* Green on hover */
  transform: scale(1.1); /* Slightly enlarge on hover */
}

/* Special styling for the main Play/Pause button */
.controls button#playPause {
  font-size: 3.5em; /* Even larger play/pause button */
  background-color: #1db954;
  color: #fff;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
}

.controls button#playPause:hover {
  background-color: #1ed760; /* Lighter green on hover */
  transform: scale(1.05);
}

/* Material Icons specific styling for vertical alignment */
.material-icons {
  vertical-align: middle;
  font-size: inherit; /* Ensure icon size matches parent button/span */
}

/* Responsive adjustments for smaller screens */
@media (max-width: 768px) {
  .container {
    flex-direction: column; /* Stack elements vertically */
  }

  aside#playlist {
    width: 100%;
    height: auto;
    transform: translateX(0) !important; /* Override hidden class on small screens for initial view */
    padding-bottom: 0;
  }

  /* Make playlist hideable on small screens too */
  aside#playlist.hidden {
      transform: translateX(-100%);
  }

  main {
    padding-top: 60px; /* Space for toggle button when playlist is hidden */
  }

  #togglePlaylist {
    left: auto; /* Remove left positioning */
    right: 20px; /* Position on the right for mobile */
  }

  .thumbnail img {
    width: 180px;
    height: 180px;
  }

  .info h2 {
    font-size: 2em;
  }

  .info p {
    font-size: 1em;
  }

  .progress-container,
  .volume-container {
    width: 90%; /* Wider sliders on small screens */
  }

  .controls button {
    font-size: 2em;
    margin: 0 10px;
  }

  .controls button#playPause {
    font-size: 3em;
    width: 50px;
    height: 50px;
  }
}