:root {
  --primary-color: #8B5A2B;
  --primary-hover: #6B4423;
  --light-bg: #F5E7D9;
  --dark-text: #3E2723;
  --border-color: #A1887F;
  --panel-bg: #D7CCC8;
  --search-bg: #EFEBE9;
  --hover-bg: #F5E7D9;
  --toast-bg: #333;
  --toast-text: #fff;
  --undo-color: #0af;
  --light-hover: #f5f5f5;
  --remove-color: #999;
  --remove-hover: #f00;
  --menu-bg: #f9f9f9;
  --divider-color: #ccc;
  --shadow-color: rgba(0, 0, 0, 0.2);
}

body.dark {
  --light-bg: #1e1e1e;
  --panel-bg: #2a2a2a;
  --search-bg: #333;
  --dark-text: #eee;
  --border-color: #555;
  --hover-bg: #444;
  --toast-bg: #111;
  --toast-text: #fafafa;
  --menu-bg: #222;
  --divider-color: #444;
}

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

body {
  background-color: var(--light-bg);
  color: var(--dark-text);
  line-height: 1.6;
  padding: 10px;
  min-height: 100vh;
  font-family: 'Sarabun', sans-serif;
  font-size: 16px;
}

.container {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  min-height: calc(100vh - 20px);
}

.panel {
  background-color: var(--panel-bg);
  border-radius: 10px;
  box-shadow: 0 2px 5px var(--shadow-color);
  padding: 20px;
  overflow: auto;
  border: 1px solid var(--border-color);
}

#book-panel {
  order: 1;
  flex: 1;
}

#chapter-panel {
  order: 2;
  flex: 2;
}

#player-panel {
  order: 3;
  flex: 1;
}

#book-tree {
  max-height: 300px;
  overflow-y: auto;
}

#playerContainer {
  width: 100%;
  min-height: 100px;
}

@media (min-width: 768px) {
  .container {
    flex-direction: row;
    height: calc(100vh - 20px);
  }

  #book-panel {
    flex: 0 0 300px;
    height: 100%;
  }

  #chapter-panel {
    flex: 1;
    height: 100%;
  }

  #player-panel {
    flex: 0 0 300px;
    height: 100%;
  }
}

@media (max-width: 480px) {
  .panel {
    padding: 10px;
  }

  #search-input {
    font-size: 14px;
  }
}

#book-tree {
  max-height: calc(100vh - 150px);
  overflow-y: auto;
}

.tree-root,
.tree-nodes {
  list-style: none;
  padding-left: 0px;
  margin: 0;
}

.tree-node {
  padding: 0px 0;
  padding-left: 15px;
  cursor: pointer;
  position: relative;
  color: var(--dark-text);
}

.tree-node.book {
  padding-left: 15px; /* Consistent padding for all book nodes */
  font-size: 16px;
}

.tree-node.book:hover {
  background-color: var(--hover-bg);
}

.tree-label {
  font-size: 16px;
  font-weight: 600;
}

.tree-label:hover {
  background-color: var(--hover-bg);
}

.playlist-item:hover {
  background-color: var(--hover-bg);
}

.chapter-title {
  font-size: 16px;
  cursor: pointer;
  flex: 1;
  text-align: left;
}

.chapter-title:hover,
.chapter-title-indent:hover,
.chapter-title-bold:hover {
  background-color: var(--hover-bg);
}

.chapter-title-bold {
  font-weight: bold;
  font-size: 16px;
  cursor: pointer;
  flex: 1;
  text-align: left;
}

.chapter-title-indent {
  cursor: pointer;
  margin-left: 20px;
}

.chapter-expand-icon {
  font-weight: bold;
  width: 16px;
  display: inline-block;
  text-align: center;
}
.chapter-star {
  margin-left: 0.5em;
}

.tree-label {
  display: block;
  padding: 5px 0;
}

.collapsible.collapsed>.tree-nodes {
  display: none;
}

.search-result-item {
  padding: 8px;
  border-bottom: 1px solid var(--border-color);
}

.search-result-item:hover {
  background-color: var(--hover-bg);
}

.red-asterisk {
  color: #D32F2F;
  margin: 0;
  padding: 0;
  display: inline;
}

.show-bookmarks-btn {
  background: var(--primary-color);
  display: block;
  margin: 10px 0;
  padding: 8px 12px;
  color: var(--toast-text);
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.3s;
}

.show-playlists-btn {
  cursor: pointer;
}

.menu-item playlist-item {
  cursor: pointer;
}

.show-bookmarks-btn:hover {
  background: var(--hover-bg);
}

.metaData {
  font-style: italic; 
}

.bookmark {
  padding: 8px;
  cursor: pointer;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.bookmark:hover {
  background: var(--hover-bg);
}

.search-container {
  position: relative;
  display: inline-block;
  width: 100%;
}

.search-container input {
  padding: 8px 40px 8px 12px;
  width: 100%;
  box-sizing: border-box;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-size: 16px;
}

.search-clear-btn {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--border-color);
  color: var(--toast-text);
  border: none;
  border-radius: 50%;
  width: 18px;
  height: 18px;
  font-size: 12px;
  line-height: 1;
  cursor: pointer;
  display: none;
  padding: 0;
  text-align: center;
  z-index: 10;
  visibility: visible;
}

.search-clear-btn[style*="block"] {
  display: block;
  visibility: visible;
}

.search-clear-btn:hover {
  background: var(--hover-bg);
}

.search-result-item {
  padding: 8px;
  cursor: pointer;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
}

.search-result-item:hover {
  background: var(--hover-bg);
}

#menu-dropdown {
  display: none;
  position: absolute;
  background-color: var(--menu-bg);
  box-shadow: 0px 8px 16px var(--shadow-color);
  padding: 12px;
  z-index: 1000;
  margin-top: 5px;
  border-radius: 8px;
}

#menu-dropdown.show {
  display: block;
}

.menu-divider {
  border-top: 1px solid var(--divider-color);
  margin: 10px 0;
}

.toast {
  position: fixed;
  bottom: 20px;
  left: 20px;
  background-color: var(--toast-bg);
  color: var(--toast-text);
  padding: 12px 16px;
  border-radius: 4px;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.3s, transform 0.3s;
  display: flex;
  align-items: center;
  z-index: 1000;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.toast .undo-btn {
  background: none;
  border: none;
  color: var(--undo-color);
  cursor: pointer;
  font-weight: bold;
}

.toast .undo-btn:hover {
  text-decoration: underline;
}

.remove-from-playlist {
  background: none;
  border: none;
  cursor: pointer;
}

.bookmark-wrapper {
  border: 1px solid var(--border-color);
  padding: 10px;
  margin-top: 10px;
  border-radius: 8px;
  background-color: var(--light-bg);
  color: var(--dark-text);
}

.bookmark-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.playlists-wrapper {
  border: 1px solid var(--border-color);
  padding: 10px;
  margin-top: 10px;
  border-radius: 8px;
  background-color: var(--light-bg);
  color: var(--dark-text);
}

.playlists-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

@media (prefers-color-scheme: dark) {
  :root {
    --primary-color: #A1887F;
    --primary-hover: #8D6E63;
    --light-bg: #3E2723;
    --dark-text: #EFEBE9;
    --border-color: #5D4037;
    --panel-bg: #5D4037;
    --search-bg: #4E342E;
    --hover-bg: #4E342E;
    --toast-bg: #8D6E63;
    --menu-bg: #4E342E;
    --divider-color: #5D4037;
    --playlist-hover: #4E342E;
  }

  body {
    background-color: var(--light-bg);
  }

  .panel {
    background-color: var(--panel-bg);
    border-color: var(--border-color);
  }

  #playerContainer {
    background-color: var(--panel-bg);
    border-color: var(--border-color);
  }

  .tree-node:hover {
    background-color: var(--hover-bg);
  }

  .search-result-item:hover,
  .bookmark:hover {
    background-color: var(--hover-bg);
  }
}

#add-bookmark-btn,
#create-playlist-btn,
#show-bookmarks-btn {
  cursor: pointer;
}

#add-bookmark-btn:hover,
#create-playlist-btn:hover,
#show-bookmarks-btn:hover {
  background-color: var(--hover-bg);
}

.playlist-item {
  display: flex;
  justify-content: flex-start;
  text-align: left;
  gap: 8px;
}

.drag-handle {
  cursor: grab;
  padding: 0 8px;
  user-select: none;
}

.drag-handle:active {
  cursor: grabbing;
}

.chapter-content {
  display: flex;
  flex-direction: column;
  flex: 1;
}

.book-title {
  font-size: 16px;
  text-align: left;
}

.item-actions {
  display: flex;
  gap: 8px;
  margin-left: auto;
}

.share-clip {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.1em;
  padding: 0 5px;
  opacity: 0.7;
  transition: opacity 0.2s;
}

.share-clip:hover {
  opacity: 1;
}

#chapter-panel.wide-panel h1 {
  font-size: 2em;
  color: #2c3e50;
  border-bottom: 2px solid #3498db;
  padding-bottom: 10px;
}

#chapter-panel.wide-panel h2 {
  font-size: 1.5em;
  color: #2c3e50;
  margin-top: 20px;
}

#chapter-panel.wide-panel h3 {
  font-size: 1.2em;
  color: #2c3e50;
  margin-top: 15px;
}

#chapter-panel.wide-panel p,
#chapter-panel.wide-panel li {
  font-size: 1em;
  margin-bottom: 10px;
}

#chapter-panel.wide-panel ul {
  list-style-type: disc;
  margin-left: 20px;
}

ul,
li {
  list-style: none;
  margin: 0;
  padding: 0;
}

#chapter-panel.wide-panel .section {
  margin-bottom: 20px;
}

#chapter-panel.wide-panel .bilingual {
  font-size: 0.9em;
  color: #7f8c8d;
  margin-top: -10px;
}

#top-bar {
  display: flex;
  align-items: center;
  gap: 1em;
  padding: 0.5em;
}

#main-menu,
#menu-btn {
  cursor: pointer;
}

#menu-btn,
#search-input {
  height: 2.5em;
  font-size: 1em;
  padding: 0 1em;
  box-sizing: border-box;
  border: 1px solid var(--border-color);
  border-radius: 4px;
}

#search-input {
  flex: 1;
  max-width: 300px;
  background-color: var(--search-bg);
  color: var(--dark-text);
}

h1 {
  font-size: 2.2em;
  color: var(--dark-text) !important;
  text-align: center;
  margin-bottom: 1em;
}

h2 {
  color: var(--dark-text) !important;
  margin-top: 2em;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 0.3em;
}

h3 {
  color: var(--dark-text) !important;
  margin-top: 2em;
  padding-bottom: 0.3em;
}

.section {
  margin-bottom: 2em;
  padding-bottom: 1em;
}

.bilingual {
  font-style: italic;
  color: var(--remove-color);
  margin-bottom: 0.5em;
}

a {
  color: var(--undo-color);
  text-decoration: none;
}

a:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}

.speaker-mark {
  color: green;
  font-size: 1em;
  display: inline;
  margin: 0; /* Remove all margins to prevent indentation */
  padding: 0; /* Remove padding */
  vertical-align: middle;
}

.bookmarks-container li {
  padding: 8px;
  margin: 4px 0;
  border-radius: 4px;
  cursor: pointer;
  transition: font-weight 0.2s;
}

.bookmarks-container li:hover {
  font-weight: bold;
}

.dark .bookmarks-container li:hover {
  font-weight: bold;
}

#book-tree li.collapsible {
  transition: none;
}

#book-tree ul {
  overflow: hidden;
}