:root {
    --gh-canvas-default: #22272e;
    --gh-canvas-subtle: #2d333b;
    --gh-canvas-inset: #1c2128;
    --gh-fg-default: #adbac7;
    --gh-fg-muted: #768390;
    --gh-fg-subtle: #636e7b;
    --gh-border-default: #444c56;
    --gh-border-muted: #373e47;
    --gh-accent-fg: #539bf5;
    --gh-accent-emphasis: #316dca;
    --gh-success-fg: #57ab5a;
    --gh-attention-fg: #c69026;
    --gh-danger-fg: #e5534b;
    --gh-done-fg: #986ee2;
    --navbar-height: 40px;
    --navbar-width: 70vw;
    --dropup-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    
    --gh-shadow-small: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
    --gh-shadow-medium: 0 3px 6px rgba(0, 0, 0, 0.16), 0 3px 6px rgba(0, 0, 0, 0.23);
    --gh-highlight: rgba(83, 155, 245, 0.1);
    --gh-hover-overlay: rgba(255, 255, 255, 0.05);
    --gh-active-overlay: rgba(255, 255, 255, 0.08);    
}


#navbar {
  position: fixed;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  width: 92vw;
  max-width: 1000px;
  height: auto;
  min-height: 4rem;
    background-color: var(--gh-canvas-subtle);
    border: 1px solid var(--gh-border-default);
    border-radius: 8px;
    z-index: 1000;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
  backdrop-filter: var(--blur-navbar);
  padding: 1rem 1.5rem;
  box-shadow: var(--shadow-navbar);
  z-index: 50;
  transition: all var(--transition-smooth);
  will-change: transform, opacity, border-color;
}

#navbar:hover {

  border-color: var(--border-accent);
  transition: all var(--transition-smooth);

}

.navbar-content {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1.5rem;
  width: 100%;
}

.navbar-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.menu-trigger {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-default);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.menu-trigger::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-fast);
  border-radius: inherit;
}

.menu-trigger:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-medium);
  border-color: var(--border-accent);
}

.menu-trigger:hover::before {
  opacity: 1;
}

.menu-trigger.active {
  background: var(--accent-primary);
  color: var(--fg-onEmphasis);
  border-color: var(--accent-primary);
}

.navbar-center {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex: 1;
  min-width: 0;
  cursor: pointer;
  padding: 0.75rem 1rem;
  border-radius: 16px;
  transition: all var(--transition-fast);
  background: transparent;
}

.navbar-center:hover {
  background: var(--bg-secondary);
  transform: scale(1.02);
}

.navbar-center.has-song {
  background: rgba(83, 155, 245, 0.1);
  border: 1px solid rgba(83, 155, 245, 0.2);
}

.navbar-center.has-song:hover {
  background: rgba(83, 155, 245, 0.15);
  border-color: var(--accent-primary);
}

.now-playing-display {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex: 1;
  min-width: 0;
}

#navbar-album-cover {
  width: 3rem;
  height: 3rem;
  border-radius: 10px;
  object-fit: cover;
  box-shadow: var(--shadow-small);
  border: 1px solid var(--border-muted);
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

#navbar-album-cover:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-medium);
  border-color: var(--border-accent);
}

#navbar-logo {
  width: 3rem;
  height: 3rem;
  background: var(--gradient-primary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-small);
  flex-shrink: 0;
}

#navbar-logo:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-medium);
}

.now-playing-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

#navbar-song-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  line-height: 1.2;
}

#navbar-artist {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  line-height: 1.2;
}

.play-indicator {
  width: 0.5rem;
  height: 0.5rem;
  background: var(--accent-primary);
  border-radius: 50%;
  opacity: 0;
  transition: opacity var(--transition-fast);
  margin-left: 0.5rem;
  flex-shrink: 0;
}

.play-indicator.active {
  opacity: 1;
  animation: pulse-glow 2s ease-in-out infinite;
}

/* Right Section: Controls */
.navbar-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-control-btn {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 10px;
  background: transparent;
  border: 1px solid var(--border-muted);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 0.875rem;
  position: relative;
  overflow: hidden;
}

.nav-control-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-fast);
  border-radius: inherit;
}

.nav-control-btn:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border-color: var(--border-accent);
  transform: scale(1.05);
}

.nav-control-btn:hover::before {
  opacity: 1;
}

.nav-control-btn.active {
  background: var(--accent-primary);
  color: var(--fg-onEmphasis);
  border-color: var(--accent-primary);
}

.nav-control-btn.play-pause {
  background: var(--gradient-primary);
  border: none;
  color: var(--fg-onEmphasis);
  box-shadow: var(--shadow-medium);
  width: 2.75rem;
  height: 2.75rem;
}

.nav-control-btn.play-pause:hover {
  transform: scale(1.08);
  box-shadow: var(--shadow-large);
}

/* Theme Toggle */
#theme-toggle {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 10px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-default);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

#theme-toggle:hover {
  background: var(--accent-primary);
  color: var(--fg-onEmphasis);
  border-color: var(--accent-primary);
  transform: scale(1.05) rotate(180deg);
}

/* Dropdown Menu */
.dropdown-menu {
  position: fixed;
  bottom: 6.5rem;
  left: 50%;
  transform: translateX(-50%);
  width: 92vw;
  max-width: 500px;
  background: var(--bg-overlay-solid);
  border: 1px solid var(--border-default);
  border-radius: 20px;
  padding: 1.5rem;
  box-shadow: var(--shadow-extra-large);
  backdrop-filter: var(--blur-lg);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(20px) scale(0.95);
  transition: all var(--transition-smooth);
  max-height: 70vh;
  overflow-y: auto;
}

.dropdown-menu.show {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0) scale(1);
}

.dropdown-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-muted);
}

.dropdown-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}

.dropdown-close {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.dropdown-section {
  margin-bottom: 2rem;
}

.dropdown-section:last-child {
  margin-bottom: 0;
}

.section-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent-primary);
  margin: 0 0 1rem 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  border-radius: 12px;
  margin-bottom: 0.5rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.dropdown-item:hover {
  background: var(--bg-secondary);
  border-color: var(--border-accent);
  transform: translateX(4px);
}

.dropdown-item:last-child {
  margin-bottom: 0;
}

.dropdown-item-icon {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 8px;
  background: var(--bg-muted);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.dropdown-item:hover .dropdown-item-icon {
  background: var(--accent-primary);
  color: var(--fg-onEmphasis);
}

.dropdown-item-content {
  flex: 1;
  min-width: 0;
}

.dropdown-item-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 0.25rem 0;
  line-height: 1.2;
}

.dropdown-item-subtitle {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.2;
}

.dropdown-item-badge {
  background: var(--accent-primary);
  color: var(--fg-onEmphasis);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.5rem;
  border-radius: 12px;
  min-width: 1.5rem;
  text-align: center;
  flex-shrink: 0;
}

/* Now Playing Popup (Enhanced) */
.now-playing-popup {
  position: fixed;
  bottom: 6.5rem;
  left: 50%;
  transform: translateX(-50%);
  width: 92vw;
  max-width: 450px;
  background: var(--bg-overlay-solid);
  border: 1px solid var(--border-default);
  border-radius: 24px;
  padding: 2rem;
  box-shadow: var(--shadow-extra-large);
  backdrop-filter: var(--blur-lg);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(20px) scale(0.95);
  transition: all var(--transition-smooth);
}

.now-playing-popup.show {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0) scale(1);
}

/* Responsive Design */
@media (max-width: 768px) {
  #navbar {
    padding: 0.75rem 1rem;
    width: 95vw;
    min-height: 3.5rem;
  }
  
  .navbar-content {
    gap: 1rem;
  }
  
  .navbar-center {
    padding: 0.5rem 0.75rem;
  }
  
  #navbar-logo,
  #navbar-album-cover {
    width: 2.5rem;
    height: 2.5rem;
  }
  
  .menu-trigger {
    width: 2.5rem;
    height: 2.5rem;
  }
  
  .nav-control-btn,
  #theme-toggle {
    width: 2.25rem;
    height: 2.25rem;
    font-size: 0.75rem;
  }
  
  .nav-control-btn.play-pause {
    width: 2.5rem;
    height: 2.5rem;
  }
  
  .nav-controls {
    gap: 0.25rem;
  }
  
  .navbar-right {
    gap: 0.5rem;
  }
  
  .dropdown-menu,
  .now-playing-popup {
    width: 95vw;
    padding: 1.25rem;
  }
  
  .dropdown-item {
    padding: 0.75rem;
  }
  
  #navbar-song-title {
    font-size: 0.85rem;
  }
  
  #navbar-artist {
    font-size: 0.75rem;
  }
}

@media (max-width: 480px) {
  .navbar-content {
    grid-template-columns: auto 1fr;
    gap: 0.75rem;
  }
  
  .navbar-right .nav-controls {
    display: none;
  }
  
  .navbar-center {
    padding: 0.5rem;
  }
}

/* Enhanced animations */
@keyframes dropdown-slide-in {
  0% {
    opacity: 0;
    transform: translateX(-50%) translateY(20px) scale(0.95);
  }
  100% {
    opacity: 1;
    transform: translateX(-50%) translateY(0) scale(1);
  }
}

.dropdown-menu.show {
  animation: dropdown-slide-in 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Accessibility improvements */
.nav-control-btn:focus,
.menu-trigger:focus,
#theme-toggle:focus,
.dropdown-item:focus,
.navbar-center:focus {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

/* Empty state styles */
.empty-state {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--text-secondary);
}

.empty-state-icon {
  width: 3rem;
  height: 3rem;
  margin: 0 auto 1rem;
  opacity: 0.5;
}

.empty-state-text {
  font-size: 0.9rem;
  line-height: 1.4;
}



































































/* Add to core.css */
.now-playing-popup {
  position: fixed;
  bottom: 6.5rem;
  left: 50%;
  transform: translateX(-50%);
  width: 92vw;
  max-width: 450px;
  background: var(--bg-overlay-solid);
  border: 1px solid var(--border-default);
  border-radius: 24px;
  padding: 2rem;
  box-shadow: var(--shadow-extra-large);
  backdrop-filter: var(--blur-lg);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(20px) scale(0.95);
  transition: all var(--transition-smooth);
}

.now-playing-popup.show {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0) scale(1);
}

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

.popup-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--fg-default);
  margin: 0;
}

.popup-close {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: transparent;
  border: none;
  color: var(--fg-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.popup-close:hover {
  background: var(--bg-subtle);
  color: var(--fg-default);
}

.popup-album-cover {
  width: 100%;
  aspect-ratio: 1/1;
  border-radius: 16px;
  object-fit: cover;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-large);
  transition: all var(--transition-normal);
}

.popup-album-cover:hover {
  transform: scale(1.02);
}

.popup-song-info {
  text-align: center;
  margin-bottom: 2rem;
}

.popup-song-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--fg-default);
  margin: 0 0 0.5rem 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.popup-artist-name {
  font-size: 1rem;
  color: var(--fg-muted);
  margin: 0 0 0.25rem 0;
}

.popup-album-name {
  font-size: 0.875rem;
  color: var(--fg-subtle);
  margin: 0;
}

.popup-progress {
  margin-bottom: 2rem;
}

.progress-time {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--fg-muted);
  margin-bottom: 0.5rem;
}

.popup-progress-bar {
  position: relative;
  height: 4px;
  background: var(--bg-subtle);
  border-radius: 4px;
  cursor: pointer;
  overflow: hidden;
}

.popup-progress-fill {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: 4px;
  transition: width 0.1s linear;
  position: relative;
}

.popup-progress-thumb {
  position: absolute;
  right: -8px;
  top: 50%;
  width: 16px;
  height: 16px;
  background: var(--fg-onEmphasis);
  border: 2px solid var(--accent-primary);
  border-radius: 50%;
  transform: translateY(-50%) scale(0);
  transition: all var(--transition-fast);
  cursor: grab;
  box-shadow: var(--shadow-small);
}

.popup-progress-bar:hover .popup-progress-thumb {
  transform: translateY(-50%) scale(1);
}

.popup-progress-thumb:active {
  cursor: grabbing;
  transform: translateY(-50%) scale(1.2);
}

.popup-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
}

.popup-control-btn {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background: var(--bg-subtle);
  border: 1px solid var(--border-default);
  color: var(--fg-default);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.popup-control-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-fast);
  border-radius: inherit;
}

.popup-control-btn:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-medium);
}

.popup-control-btn:hover::before {
  opacity: 1;
}

.popup-control-btn.active {
  background: var(--accent-primary);
  color: var(--fg-onEmphasis);
  border-color: var(--accent-primary);
}

.popup-control-btn.play-pause {
  width: 3.5rem;
  height: 3.5rem;
  background: var(--gradient-primary);
  border: none;
  color: var(--fg-onEmphasis);
  box-shadow: var(--shadow-large);
}

.popup-control-btn.play-pause:hover {
  transform: scale(1.08);
  box-shadow: 0 0 0 12px rgba(83, 155, 245, 0.15);
}

.popup-actions {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
}

.popup-action-btn {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background: var(--bg-subtle);
  border: 1px solid var(--border-default);
  color: var(--fg-default);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.popup-action-btn:hover {
  background: var(--accent-primary);
  color: var(--fg-onEmphasis);
  border-color: var(--accent-primary);
  transform: scale(1.1);
}

.popup-action-btn.active {
  background: var(--accent-danger);
  color: var(--fg-onEmphasis);
  border-color: var(--accent-danger);
}

.popup-tabs {
  display: flex;
  justify-content: center;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-muted);
}

.popup-tab {
  padding: 0.75rem 1.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--fg-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  border-bottom: 2px solid transparent;
}

.popup-tab:hover {
  color: var(--fg-default);
}

.popup-tab.active {
  color: var(--accent-primary);
  border-bottom-color: var(--accent-primary);
}

.popup-tab-content {
  max-height: 300px;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.popup-song-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.popup-song-item {
  display: flex;
  align-items: center;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.popup-song-item:hover {
  background: var(--bg-subtle);
}

.popup-song-item.active {
  background: var(--bg-muted);
}

.popup-song-cover {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 6px;
  object-fit: cover;
  margin-right: 1rem;
}

.popup-song-info {
  flex: 1;
  min-width: 0;
}

.popup-song-title {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--fg-default);
  margin: 0 0 0.25rem 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.popup-song-artist {
  font-size: 0.75rem;
  color: var(--fg-muted);
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.popup-song-duration {
  font-size: 0.75rem;
  color: var(--fg-muted);
  margin-left: 1rem;
}

/* Auto-return to Now Playing tab */
.popup-tab-content[data-tab="queue"]:not(:hover) ~ .popup-tabs .popup-tab[data-tab="now-playing"],
.popup-tab-content[data-tab="recent"]:not(:hover) ~ .popup-tabs .popup-tab[data-tab="now-playing"] {
  opacity: 0;
  pointer-events: none;
}

.popup-tab-content[data-tab="queue"]:hover ~ .popup-tabs .popup-tab[data-tab="queue"],
.popup-tab-content[data-tab="recent"]:hover ~ .popup-tabs .popup-tab[data-tab="recent"] {
  opacity: 1;
  pointer-events: auto;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .now-playing-popup {
    padding: 1.5rem;
    max-width: 90vw;
  }
  
  .popup-controls {
    gap: 0.75rem;
  }
  
  .popup-control-btn {
    width: 2.25rem;
    height: 2.25rem;
  }
  
  .popup-control-btn.play-pause {
    width: 3rem;
    height: 3rem;
  }
  
  .popup-tab-content {
    max-height: 200px;
  }
}