:root {
  --background-color: #f9fafb;
  --text-color: #1f2937;
  --button-bg: linear-gradient(135deg, #3b82f6, #60a5fa);
  --button-bg-hover: linear-gradient(135deg, #2563eb, #3b82f6);
  --button-text: #ffffff;
  --highlight-bg: #fef08a;
  --highlight-text: #1f2937;
  --font-size: 18px;
  --border-radius: 6px;
  --transition: all 0.2s ease;
  --shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
  --gradient: linear-gradient(135deg, #eff6ff 0%, #fefce8 100%);
}

body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  max-width: 1200px;
  margin: 0 auto;
  padding: 8px;
  line-height: 1.8;
  background: var(--gradient);
  color: var(--text-color);
  transition: var(--transition);
  font-size: var(--font-size);
  scroll-behavior: smooth;
  letter-spacing: 0.3px;
}

.header {
  text-align: center;
  padding: 8px 0;
  position: sticky;
  top: 0;
  background: var(--background-color);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  z-index: 100;
}

.header h1 {
  font-size: 1.8rem;
  font-weight: 700;
  color: #2563eb;
  margin: 0;
  letter-spacing: 0.8px;
}

.header-buttons {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 6px;
}

.icon-button {
  width: 36px;
  height: 36px;
  background: var(--button-bg);
  color: var(--button-text);
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  font-size: 1.1rem;
  transition: var(--transition);
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  justify-content: center;
}

.icon-button:hover {
  background: var(--button-bg-hover);
  transform: scale(1.05) rotate(3deg);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.12);
}

.text-button {
  padding: 6px 10px;
  background: var(--button-bg);
  color: var(--button-text);
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  font-size: calc(var(--font-size) - 3px);
  transition: var(--transition);
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  justify-content: center;
}

.text-button:hover {
  background: var(--button-bg-hover);
  transform: scale(1.02) rotate(2deg);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.12);
}

.nav {
  margin: 8px 0;
  padding: 6px;
  background: rgba(255, 255, 255, 0.95);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}

.nav-group {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 6px 0;
  flex-wrap: nowrap;
}

.nav-group select {
  flex: 1;
  min-width: 80px;
  padding: 6px;
}

.search-group {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 6px 0;
}

.search-group input {
  flex: 1;
  max-width: 300px;
  padding: 6px;
  border: 1px solid #d1d5db;
  border-radius: var(--border-radius);
  font-size: calc(var(--font-size) - 2px);
  transition: var(--transition);
}

.search-group input:focus {
  border-color: #2563eb;
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
  outline: none;
}

.settings-group {
  position: absolute;
  top: 0;
  right: 8px;
  z-index: 200;
}

.settings-menu {
  position: fixed;
  top: 60px;
  right: 8px;
  background: var(--background-color);
  border: 1px solid #d1d5db;
  border-radius: var(--border-radius);
  padding: 10px;
  box-shadow: var(--shadow);
  z-index: 200;
  transform: translateY(8px);
  opacity: 0;
  transition: var(--transition), transform 0.2s ease, opacity 0.2s ease;
}

.settings-menu:not(.hidden) {
  transform: translateY(0);
  opacity: 1;
}

.settings-menu.hidden {
  display: none;
}

.font-controls, .filter-controls {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.font-controls .icon-button {
  font-size: 0.9rem;
}

.main {
  margin: 8px 0;
  padding-bottom: 36px;
}

.loading-progress {
  display: none;
  width: 80%;
  max-width: 400px;
  margin: 10px auto;
  padding: 8px;
  background: rgba(255, 255, 255, 0.95);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  text-align: center;
}

.loading-progress:not(.hidden) {
  display: block;
}

.progress-bar {
  width: 0%;
  height: 8px;
  background: var(--button-bg);
  border-radius: var(--border-radius);
  transition: width 0.3s ease;
}

#loading-text {
  display: block;
  margin-top: 6px;
  font-size: calc(var(--font-size) - 2px);
  color: var(--text-color);
}

body.dark-mode .loading-progress {
  background: rgba(75, 85, 99, 0.95);
}

body.dark-mode .progress-bar {
  background: var(--button-bg);
}

.chapter-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 48px;
  background: rgba(255, 255, 255, 0.95);
  position: sticky;
  bottom: 0;
  z-index: 50;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}

.audio-controls {
  flex: 1;
  text-align: center;
}

select, input, button {
  padding: 6px;
  font-size: calc(var(--font-size) - 2px);
  border-radius: var(--border-radius);
  border: 1px solid #d1d5db;
  transition: var(--transition);
}

select:focus, input:focus, button:focus {
  border-color: #2563eb;
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
  outline: none;
}

.load-button {
  background: var(--button-bg);
  color: var(--button-text);
  border: none;
  cursor: pointer;
  box-shadow: var(--shadow);
}

.load-button:hover {
  background: var(--button-bg-hover);
  transform: scale(1.02) rotate(2deg);
}

#verses {
  margin-top: 8px;
}

.verse {
  margin: 8px 0;
  padding: 6px;
  border-left: 3px solid #2563eb;
  background: rgba(255, 255, 255, 0.98);
  border-radius: var(--border-radius);
  transition: var(--transition);
  cursor: pointer;
  touch-action: manipulation;
  position: relative;
}

.verse:hover {
  background: rgba(219, 234, 254, 0.98);
  transform: translateX(3px);
}

.verse:active {
  background: rgba(191, 219, 254, 0.98);
}

.verse.selected {
  background: rgba(191, 219, 254, 0.98);
  border-left: 3px solid #1e40af;
  box-shadow: 0 0 8px rgba(37, 99, 235, 0.3);
}

.verse.selected::before {
  content: '✅';
  position: absolute;
  left: -20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1rem;
  color: #2563eb;
}

.verse.copied {
  animation: fadeHighlight 0.5s ease;
}

body.dark-mode .verse:hover {
  background: rgba(75, 85, 99, 0.98);
}

body.dark-mode .verse:active {
  background: rgba(107, 114, 128, 0.98);
}

body.dark-mode .verse.selected {
  background: rgba(107, 114, 128, 0.98);
  border-left: 3px solid #60a5fa;
  box-shadow: 0 0 8px rgba(96, 165, 250, 0.3);
}

body.dark-mode .verse.selected::before {
  content: '✅';
  position: absolute;
  left: -20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1rem;
  color: #60a5fa;
}

body.dark-mode .verse.copied {
  animation: fadeHighlightDark 0.5s ease;
}

.verse-number {
  font-weight: 600;
  color: #2563eb;
}

.verse-title {
  font-weight: 600;
  color: #4b5563;
  display: none;
}

.verse-title.show {
  display: block;
}

.verse-note {
  font-style: italic;
  color: #6b7280;
  display: none;
}

.verse-note.show {
  display: block;
}

#audio-section {
  margin: 6px 0;
}

#audio-section audio {
  width: 100%;
  max-width: 400px;
  margin: 6px auto;
  display: block;
}

#audio-error {
  margin: 6px 0;
  color: #dc2626;
}



.copy-toast {
  position: fixed;
  top: 20px;
  right: 20px;
  background: #10b981;
  color: #ffffff;
  padding: 8px 16px;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  z-index: 300;
  opacity: 0;
  transform: translateY(-10px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.copy-toast:not(.hidden) {
  opacity: 1;
  transform: translateY(0);
}

.copy-toast.hidden {
  display: none;
}



@keyframes fadeHighlight {
  0% { background: rgba(219, 234, 254, 0.98); }
  50% { background: rgba(147, 197, 253, 0.98); }
  100% { background: rgba(219, 234, 254, 0.98); }
}

@keyframes fadeHighlightDark {
  0% { background: rgba(75, 85, 99, 0.98); }
  50% { background: rgba(107, 114, 128, 0.98); }
  100% { background: rgba(75, 85, 99, 0.98); }
}

.highlight {
  background: var(--highlight-bg);
  color: var(--highlight-text);
  padding: 2px 5px;
  border-radius: 3px;
}

body.dark-mode {
  --background-color: #111827;
  --text-color: #f3f4f6;
  --button-bg: linear-gradient(135deg, #60a5fa, #93c5fd);
  --button-bg-hover: linear-gradient(135deg, #3b82f6, #60a5fa);
  --highlight-bg: #60a5fa;
  --highlight-text: #ffffff;
  --gradient: linear-gradient(135deg, #1f2937 0%, #374151 100%);
}

body.dark-mode .nav {
  background: rgba(75, 85, 99, 0.95);
}

body.dark-mode .chapter-nav {
  background: rgba(75, 85, 99, 0.95);
}

body.dark-mode .verse {
  background: rgba(55, 65, 81, 0.98);
}

body.dark-mode ::selection {
  background: var(--highlight-bg);
  color: var(--highlight-text);
}

.single-underline {
  text-decoration: underline;
  text-decoration-color: currentColor;
}

.double-underline {
  position: relative;
  display: inline;
  text-decoration: none;
  background-image: linear-gradient(currentColor, currentColor), linear-gradient(currentColor, currentColor);
  background-size: 100% 1px, 100% 1px;
  background-position: 0 100%, 0 calc(100% - 2px);
  background-repeat: no-repeat;
}

body.dark-mode .single-underline {
  text-decoration-color: #f3f4f6;
}

body.dark-mode .double-underline {
  background-image: linear-gradient(#f3f4f6, #f3f4f6), linear-gradient(#f3f4f6, #f3f4f6);
}

@media (max-width: 768px) {
  body {
    padding: 6px;
  }
  .header {
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    padding: 6px;
    box-sizing: border-box;
  }
  .header h1 {
    font-size: 1.4rem;
  }
  .header-buttons {
    gap: 8px;
  }
  .nav {
    margin-top: 70px;
  }
  .nav-group {
    flex-direction: row;
    flex-wrap: nowrap;
    gap: 4px;
  }
  .nav-group select {
    min-width: 60px;
    padding: 4px;
    font-size: calc(var(--font-size) - 4px);
  }
  .search-group {
    flex-direction: row;
    gap: 4px;
  }
  .search-group input {
    max-width: none;
    width: 100%;
  }
	.chapter-nav {
	  position: fixed;
	  bottom: 0;
	  left: 0;
	  width: 100%;
	  padding: 6px 24px; /* 改为较小的左右内边距 */
	  box-shadow: 0 -2px 4px rgba(0, 0, 0, 0.08);
	  display: flex;
	  justify-content: space-between;
	  align-items: center;
	  background: rgba(255, 255, 255, 0.95);
	  border-radius: var(--border-radius);
	  backdrop-filter: blur(8px);
	  box-sizing: border-box;
	}
  .icon-button, .text-button {
    width: 32px;
    height: 32px;
    font-size: 0.9rem;
    padding: 4px;
  }
  .text-button {
    width: auto;
    padding: 4px 8px;
    font-size: calc(var(--font-size) - 4px);
  }
  .verse {
    padding: 6px;
  }
  .verse.selected::before {
    left: -18px;
    font-size: 0.9rem;
  }
  .settings-menu {
    top: 50px;
    right: 6px;
  }
  .copy-toast {
    top: 10px;
    right: 10px;
    padding: 6px 12px;
    font-size: 0.9rem;
  }
}

@media (min-width: 1024px) and (max-width: 1200px) {
  body {
    max-width: 960px;
  }
}

@media (min-width: 1201px) {
  body {
    max-width: 1100px;
  }
  .verse {
    padding: 8px;
  }
}