:root {
  --primary-bg: #0a0a0a;
  --secondary-bg: #1a1a1a;
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  --neon-purple: #8b5cf6;
  --neon-cyan: #06b6d4;
  --neon-pink: #ec4899;
  --text-primary: #ffffff;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --accent-gradient: linear-gradient(135deg, var(--neon-purple), var(--neon-cyan));
  --sidebar-width: 280px;
  --navbar-height: 70px;
  --player-height: 90px;
}


* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* Default Dark Theme (no .dark-mode class needed) */
body {
  font-family: "Inter", sans-serif;
  background: var(--primary-bg, hsl(260, 45%, 12%)); /* fallback dark bg */
  color: var(--text-primary, hsl(0, 0%, 100%));      /* fallback white text */
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 20% 80%, rgba(139, 92, 246, 0.3) 0%, transparent 50%),
              radial-gradient(circle at 80% 20%, rgba(6, 182, 212, 0.3) 0%, transparent 50%),
              radial-gradient(circle at 40% 40%, rgba(236, 72, 153, 0.2) 0%, transparent 50%);
  z-index: -1;
  animation: backgroundShift 20s ease-in-out infinite;
  transition: background 0.3s ease;
}

/* Glass Effect for Dark Mode */
.glass-nav,
.glass-sidebar,
.glass-card,
.glass-player,
.glass-dropdown {
  background: rgba(255, 255, 255, 0.1); /* Light translucent for dark bg */
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: background 0.3s ease, border-color 0.3s ease;
}

/* Animation for background */
@keyframes backgroundShift {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.8;
  }
}

/* Navigation */
.navbar {
  height: var(--navbar-height);
  padding: 0 2rem;
  z-index: 1000;
}

.logo-container {
  position: relative;
  margin-right: 12px;
}

.logo {
  width: 40px;
  height: 40px;
  background: var(--accent-gradient);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 20px;
  position: relative;
  overflow: hidden;
}

.logo-wave {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--neon-cyan);
  animation: waveAnimation 2s ease-in-out infinite;
}

@keyframes waveAnimation {
  0%,
  100% {
    transform: scaleX(0.5);
  }
  50% {
    transform: scaleX(1);
  }
}

.brand-text {
  font-size: 24px;
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.search-container {
  max-width: 500px;
  width: 100%;
}

.search-wrapper {
  position: relative;
}

.search-input {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 25px;
  padding: 12px 20px 12px 45px;
  color: var(--text-primary);
  font-size: 14px;
  transition: all 0.3s ease;
}

.search-input:focus {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--neon-purple);
  box-shadow: 0 0 20px rgba(139, 92, 246, 0.3);
  outline: none;
}

.search-input::placeholder {
  color: var(--text-muted);
}

.search-icon {
  position: absolute;
  left: 15px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

.now-playing-mini {
  background: var(--glass-bg);
  border-radius: 8px;
  padding: 8px 12px;
  border: 1px solid var(--glass-border);
}

.now-playing-thumb {
  width: 32px;
  height: 32px;
  border-radius: 4px;
  margin-right: 8px;
}

.now-playing-info {
  font-size: 12px;
}

.now-playing-title {
  font-weight: 500;
  color: var(--text-primary);
}

.now-playing-artist {
  color: var(--text-secondary);
}

.profile-img {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid var(--neon-purple);
}

.glass-dropdown {
  border-radius: 12px;
  margin-top: 8px;
}

.dropdown-item {
  color: var(--text-primary);
  padding: 8px 16px;
  border-radius: 6px;
  margin: 2px 8px;
  transition: all 0.3s ease;
}

.dropdown-item:hover {
  background: var(--glass-bg);
  color: var(--text-primary);
}

/* Main Layout */
.main-container {
  display: flex;
  margin-top: var(--navbar-height);
  height: calc(100vh - var(--navbar-height) - var(--player-height));
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  padding: 2rem 1rem;
  border-radius: 0 12px 12px 0;
  margin: 1rem 0 1rem 1rem;
  position: fixed;
  height: calc(100vh - var(--navbar-height) - var(--player-height) - 2rem);
  overflow-y: auto;
  z-index: 100;
}

.sidebar-content {
  height: 100%;
}

.nav-pills .nav-link {
  color: var(--text-secondary);
  border-radius: 12px;
  padding: 12px 16px;
  margin-bottom: 8px;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  font-weight: 500;
}

.nav-pills .nav-link i {
  margin-right: 12px;
  width: 20px;
  text-align: center;
}

.nav-pills .nav-link:hover {
  background: var(--glass-bg);
  color: var(--text-primary);
  transform: translateX(4px);
}

.nav-pills .nav-link.active {
  background: var(--accent-gradient);
  color: var(--text-primary);
  box-shadow: 0 4px 20px rgba(139, 92, 246, 0.3);
}

.sidebar-title {
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.recent-item {
  display: flex;
  align-items: center;
  padding: 8px 0;
  cursor: pointer;
  transition: all 0.3s ease;
}

.recent-item:hover {
  transform: translateX(4px);
}

.recent-item img {
  width: 40px;
  height: 40px;
  border-radius: 6px;
  margin-right: 12px;
}

.recent-name {
  font-weight: 500;
  color: var(--text-primary);
  font-size: 14px;
}

.recent-count {
  color: var(--text-secondary);
  font-size: 12px;
}

/* Main Content */
.main-content {
  flex: 1;
  margin-left: calc(var(--sidebar-width) + 2rem);
  padding: 2rem;
  overflow-y: auto;
  height: 100%;
}

.content-header {
  margin-bottom: 2rem;
}

.page-title {
  font-size: 2.5rem;
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.page-subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

/* Quick Access */
.quick-card {
  display: flex;
  align-items: center;
  padding: 16px;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.quick-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(139, 92, 246, 0.2);
}

.quick-card img {
  width: 60px;
  height: 60px;
  border-radius: 8px;
  margin-right: 16px;
}

.quick-card span {
  font-weight: 600;
  flex: 1;
}

.play-btn-quick {
  background: var(--neon-purple);
  border: none;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  transition: all 0.3s ease;
  opacity: 0;
  transform: translateX(20px);
}

.quick-card:hover .play-btn-quick {
  opacity: 1;
  transform: translateX(0);
}

/* Content Sections */
.content-section {
  margin-bottom: 3rem;
}

.section-header {
  display: flex;
  justify-content: between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.see-all {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}

.see-all:hover {
  color: var(--neon-purple);
}

/* Music Cards */
.music-card {
  border-radius: 16px;
  padding: 20px;
  transition: all 0.3s ease;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.music-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 40px rgba(139, 92, 246, 0.2);
}

.card-image {
  position: relative;
  margin-bottom: 16px;
}

.card-image img {
  width: 100%;
  border-radius: 12px;
  aspect-ratio: 1;
  object-fit: cover;
}

.play-btn {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: var(--neon-purple);
  border: none;
  border-radius: 50%;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 16px;
  transition: all 0.3s ease;
  opacity: 0;
  transform: translateY(20px);
  box-shadow: 0 4px 20px rgba(139, 92, 246, 0.4);
}

.music-card:hover .play-btn {
  opacity: 1;
  transform: translateY(0);
}

.card-title {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
  font-size: 1rem;
}

.card-artist {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 8px;
}

.card-description {
  color: var(--text-muted);
  font-size: 0.8rem;
  margin: 0;
}

/* Song List */
.song-list {
  background: var(--glass-bg);
  border-radius: 16px;
  padding: 16px;
  border: 1px solid var(--glass-border);
}

.song-item {
  display: grid;
  grid-template-columns: 40px 60px 1fr auto auto auto;
  gap: 16px;
  align-items: center;
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 8px;
  transition: all 0.3s ease;
  cursor: pointer;
}

.song-item:hover {
  background: rgba(255, 255, 255, 0.05);
}

.song-number {
  color: var(--text-secondary);
  font-weight: 500;
  text-align: center;
}

.song-image {
  position: relative;
}

.song-image img {
  width: 50px;
  height: 50px;
  border-radius: 6px;
}

.song-play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(0, 0, 0, 0.8);
  border: none;
  border-radius: 50%;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  opacity: 0;
  transition: all 0.3s ease;
}

.song-item:hover .song-play-btn {
  opacity: 1;
}

.song-title {
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.song-artist {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.song-album {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.song-duration {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.song-actions {
  display: flex;
  gap: 8px;
}

.action-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  padding: 8px;
  border-radius: 50%;
  transition: all 0.3s ease;
  opacity: 0;
}

.song-item:hover .action-btn {
  opacity: 1 !important;
}

.action-btn:hover {
  color: var(--text-primary);
  background: var(--glass-bg);
}

/* Music Player */
.music-player {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--player-height);
  border-radius: 12px 12px 0 0;
  margin: 0 1rem 1rem 1rem;
  z-index: 1000;
}

.player-content {
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  align-items: center;
  height: 100%;
  padding: 0 24px;
  gap: 24px;
}

.player-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.player-image {
  width: 60px;
  height: 60px;
  border-radius: 8px;
}

.player-title {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.player-artist {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.player-action-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  padding: 8px;
  border-radius: 50%;
  transition: all 0.3s ease;
}

.player-action-btn:hover {
  color: var(--neon-purple);
}

.player-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.player-controls {
  display: flex;
  align-items: center;
  gap: 16px;
}

.control-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  padding: 8px;
  border-radius: 50%;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.control-btn:hover {
  color: var(--text-primary);
  background: var(--glass-bg);
}

.play-pause-btn {
  background: var(--neon-purple);
  color: white;
  width: 40px;
  height: 40px;
  font-size: 16px;
}

.play-pause-btn:hover {
  background: var(--neon-cyan);
  color: white;
  transform: scale(1.1);
}

.progress-container {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  max-width: 500px;
}

.time-current,
.time-total {
  color: var(--text-secondary);
  font-size: 0.8rem;
  min-width: 35px;
}

.progress-bar {
  flex: 1;
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
  position: relative;
  cursor: pointer;
}

.progress-fill {
  height: 100%;
  background: var(--accent-gradient);
  border-radius: 2px;
  width: 35%;
  position: relative;
}

.progress-handle {
  position: absolute;
  right: -6px;
  top: 50%;
  transform: translateY(-50%);
  width: 12px;
  height: 12px;
  background: white;
  border-radius: 50%;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.progress-bar:hover .progress-handle {
  opacity: 1;
}

.player-right {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 16px;
}

.volume-container {
  display: flex;
  align-items: center;
  gap: 8px;
}

.volume-bar {
  width: 80px;
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
  position: relative;
  cursor: pointer;
}

.volume-fill {
  height: 100%;
  background: var(--accent-gradient);
  border-radius: 2px;
  width: 70%;
  position: relative;
}

.volume-handle {
  position: absolute;
  right: -6px;
  top: 50%;
  transform: translateY(-50%);
  width: 12px;
  height: 12px;
  background: white;
  border-radius: 50%;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.volume-bar:hover .volume-handle {
  opacity: 1;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--glass-border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* Loading Animation */
@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.loading {
  animation: pulse 2s ease-in-out infinite;
}

/* Focus States */
.control-btn:focus,
.action-btn:focus,
.nav-link:focus {
  outline: 2px solid var(--neon-purple);
  outline-offset: 2px;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
  :root {
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.3);
  }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* === Quantify Player States === */

.quick-card.active,
.music-card.active {
  box-shadow: 0 0 20px var(--neon-purple);
}

/* Active State */
.song-item.active {
  background: rgba(255, 255, 255, 0.08);
}
.song-item.active .song-title {
  color: var(--neon-purple);
}

/* Search Result Highlight */
.search-highlight {
  background-color: rgba(139, 92, 246, 0.2);
  border-radius: 6px;
  padding: 4px 8px;
  font-weight: 500;
}

.control-btn.active {
  color: #1db954; /* Spotify green for example */
}


/* Small Devices: max-width 576px (e.g. phones) */
@media (max-width: 576px) {
  .page-title {
    font-size: 1.8rem;
  }

  .main-content {
    padding: 1rem;
  }

  .music-card {
    padding: 14px;
  }

  .player-left {
    gap: 10px;
  }

  .player-image {
    width: 48px;
    height: 48px;
  }

  .player-title,
  .player-artist {
    font-size: 0.8rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .sidebar {
    display: none;
  }

  .navbar {
    padding: 0 1rem;
  }

  .search-container {
    display: none;
  }

  .player-right {
    display: none;
  }

  .song-item {
    grid-template-columns: 50px 1fr auto;
    gap: 10px;
  }

  .song-number,
  .song-album {
    display: none;
  }

  .quick-access .col-md-6:nth-child(n + 3) {
    display: none;
  }
}

/* Medium Devices: max-width 768px (e.g. tablets) */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.3s ease;
  }

  .sidebar.show {
    transform: translateX(0);
  }

  .main-content {
    margin-left: 0;
    padding: 1.5rem;
  }

  .player-content {
    grid-template-columns: 1fr auto;
    gap: 16px;
  }

  .search-input {
    font-size: 13px;
    padding: 10px 16px 10px 40px;
  }

  .song-item {
    font-size: 0.85rem;
  }
}

/* Large Devices: max-width 992px (smaller desktops or horizontal tablets) */
@media (max-width: 992px) {
  .main-content {
    padding: 2rem 1.5rem;
  }

  .music-card {
    padding: 18px;
  }

  .quick-card {
    padding: 12px;
  }

  .quick-card img {
    width: 50px;
    height: 50px;
  }

  .dropdown-item {
    font-size: 0.9rem;
  }
}

/* Extra Large Devices: max-width 1200px (standard desktops) */
@media (max-width: 1200px) {
  .main-content {
    padding: 2rem;
  }

  .sidebar {
    width: 240px;
  }

  .search-input {
    width: 100%;
  }

  .player-content {
    gap: 16px;
  }
}