/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
  color: #ffffff;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow-x: hidden;
}

.background-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(
      circle at 30% 40%,
      rgba(255, 255, 255, 0.1) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 70% 80%,
      rgba(255, 255, 255, 0.05) 0%,
      transparent 50%
    );
  pointer-events: none;
  z-index: -1;
}

/* Header */
.header {
  text-align: center;
  margin-bottom: 2rem;
  animation: fadeInDown 1s ease-out;
}

.logo {
  font-size: 3rem;
  font-weight: 700;
  background: linear-gradient(45deg, #ff6b6b, #4ecdc4, #45b7d1, #96ceb4);
  background-size: 400% 400%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 0 30px rgba(255, 255, 255, 0.3);
  animation: gradientShift 3s ease infinite;
}

/* Main Content */
.main-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  max-width: 600px;
  width: 90%;
  padding: 2rem;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border-radius: 20px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.2);
  animation: fadeInUp 1s ease-out 0.5s both;
}

/* Album Art */
.album-art {
  display: flex;
  justify-content: center;
  align-items: center;
}

.album-cover {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: linear-gradient(45deg, #667eea 0%, #764ba2 100%);
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  transition: all 0.3s ease;
  animation: rotate 20s linear infinite;
}

.album-cover:hover {
  transform: scale(1.05);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
}

.album-placeholder {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 50%, #fecfef 100%);
  display: flex;
  justify-content: center;
  align-items: center;
  animation: pulse 2s ease-in-out infinite;
}

.album-icon {
  font-size: 4rem;
  color: rgba(255, 255, 255, 0.8);
  text-shadow: 0 0 20px rgba(255, 255, 255, 0.5);
}

/* Player Section */
.player-section {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

/* Song Info */
.song-info {
  text-align: center;
}

.song-info h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.song-info p {
  font-size: 1rem;
  opacity: 0.8;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

/* Progress Container */
.progress-container {
  display: flex;
  align-items: center;
  gap: 1rem;
  width: 100%;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.8);
}

#progress {
  flex: 1;
  height: 6px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 3px;
  outline: none;

  cursor: pointer;
}

#progress::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: linear-gradient(45deg, #ff6b6b, #4ecdc4);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
  cursor: pointer;
  transition: all 0.2s ease;
}

#progress::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.4);
}

#progress::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: linear-gradient(45deg, #ff6b6b, #4ecdc4);
  border: none;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
  cursor: pointer;
}

/* Controls */
.controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.control-btn {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  border: none;
  background: linear-gradient(45deg, #667eea, #764ba2);
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  display: flex;
  justify-content: center;
  align-items: center;
}

.control-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
  background: linear-gradient(45deg, #764ba2, #667eea);
}

.control-btn:active {
  transform: translateY(0);
}

.play-btn {
  width: 80px;
  height: 80px;
  font-size: 2rem;
  background: linear-gradient(45deg, #ff6b6b, #4ecdc4);
}

.play-btn:hover {
  background: linear-gradient(45deg, #4ecdc4, #ff6b6b);
}

/* Volume Container */
.volume-container {
  display: flex;
  align-items: center;
  gap: 1rem;
  width: 100%;
  max-width: 200px;
}

.volume-icon {
  font-size: 1.2rem;
}

#volume {
  flex: 1;
  height: 4px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}

#volume::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: linear-gradient(45deg, #ff6b6b, #4ecdc4);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
  cursor: pointer;
}

#volume::-moz-range-thumb {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: linear-gradient(45deg, #ff6b6b, #4ecdc4);
  border: none;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
  cursor: pointer;
}

/* Playlist Section */
.playlist-section {
  width: 100%;
}

.playlist-title {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 1rem;
  text-align: center;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.song-list {
  list-style: none;
  max-height: 200px;
  overflow-y: auto;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  padding: 0.5rem;
}

.song-list li {
  padding: 0.75rem 1rem;
  margin-bottom: 0.5rem;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.song-list li:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateX(5px);
}

.song-list li.active {
  background: linear-gradient(45deg, #ff6b6b, #4ecdc4);
  color: white;
  font-weight: 600;
}

/* Animations */
@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

@keyframes rotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  .logo {
    font-size: 2.5rem;
  }

  .main-content {
    padding: 1.5rem;
    gap: 1.5rem;
  }

  .album-cover {
    width: 150px;
    height: 150px;
  }

  .album-placeholder {
    width: 130px;
    height: 130px;
  }

  .album-icon {
    font-size: 3rem;
  }

  .control-btn {
    width: 50px;
    height: 50px;
    font-size: 1.2rem;
  }

  .play-btn {
    width: 70px;
    height: 70px;
    font-size: 1.8rem;
  }

  .song-info h2 {
    font-size: 1.3rem;
  }
}

@media (max-width: 480px) {
  .logo {
    font-size: 2rem;
  }

  .main-content {
    padding: 1rem;
  }

  .album-cover {
    width: 120px;
    height: 120px;
  }

  .album-placeholder {
    width: 100px;
    height: 100px;
  }

  .album-icon {
    font-size: 2.5rem;
  }

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

  .play-btn {
    width: 60px;
    height: 60px;
    font-size: 1.5rem;
  }

  .song-info h2 {
    font-size: 1.1rem;
  }

  .song-info p {
    font-size: 0.9rem;
  }
}

/* Custom Scrollbar */
.song-list::-webkit-scrollbar {
  width: 6px;
}

.song-list::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
}

.song-list::-webkit-scrollbar-thumb {
  background: linear-gradient(45deg, #ff6b6b, #4ecdc4);
  border-radius: 3px;
}

.song-list::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(45deg, #4ecdc4, #ff6b6b);
}