:root {
  --bg-primary: #0a0c10;
  --bg-secondary: rgba(18, 22, 32, 0.7);
  --bg-tertiary: rgba(30, 36, 50, 0.8);
  --accent-color: #4f46e5;
  --accent-glow: rgba(79, 70, 229, 0.4);
  --accent-premium: linear-gradient(135deg, #a855f7 0%, #4f46e5 100%);
  --text-primary: #f3f4f6;
  --text-muted: #9ca3af;
  --text-dark: #6b7280;
  --char-default: #9ca3af;
  --char-correct: #10b981;
  --char-correct-bg: rgba(16, 185, 129, 0.1);
  --char-incorrect: #ef4444;
  --char-incorrect-bg: rgba(239, 68, 68, 0.2);
  --char-current: #6366f1;
  --border-glass: rgba(255, 255, 255, 0.08);
  --shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body.theme-light {
  --bg-primary: #f4f6f9;
  --bg-secondary: rgba(255, 255, 255, 0.9);
  --bg-tertiary: rgba(240, 243, 248, 0.95);
  --accent-color: #4f46e5;
  --accent-glow: rgba(79, 70, 229, 0.2);
  --accent-premium: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
  --text-primary: #1f2937;
  --text-muted: #6b7280;
  --text-dark: #9ca3af;
  --char-default: #6b7280;
  --char-correct: #059669;
  --char-correct-bg: rgba(5, 150, 105, 0.1);
  --char-incorrect: #dc2626;
  --char-incorrect-bg: rgba(220, 38, 38, 0.1);
  --char-current: #4f46e5;
  --border-glass: rgba(0, 0, 0, 0.08);
  --shadow-glass: 0 8px 32px 0 rgba(31, 41, 55, 0.08);
}

body.theme-cyberpunk {
  --bg-primary: #05050d;
  --bg-secondary: rgba(13, 9, 29, 0.85);
  --bg-tertiary: rgba(30, 15, 60, 0.9);
  --accent-color: #ff007f;
  --accent-glow: rgba(255, 0, 127, 0.4);
  --accent-premium: linear-gradient(135deg, #00f0ff 0%, #ff007f 100%);
  --text-primary: #00f0ff;
  --text-muted: #d946ef;
  --text-dark: #6b21a8;
  --char-default: #d946ef;
  --char-correct: #00ff66;
  --char-correct-bg: rgba(0, 255, 102, 0.15);
  --char-incorrect: #ff0055;
  --char-incorrect-bg: rgba(255, 0, 85, 0.25);
  --char-current: #ff007f;
  --border-glass: rgba(0, 240, 255, 0.15);
  --shadow-glass: 0 8px 32px 0 rgba(255, 0, 127, 0.2);
}

body.theme-forest {
  --bg-primary: #0b1411;
  --bg-secondary: rgba(17, 28, 24, 0.8);
  --bg-tertiary: rgba(24, 38, 32, 0.9);
  --accent-color: #10b981;
  --accent-glow: rgba(16, 185, 129, 0.4);
  --accent-premium: linear-gradient(135deg, #34d399 0%, #059669 100%);
  --text-primary: #ecfdf5;
  --text-muted: #6ee7b7;
  --text-dark: #064e3b;
  --char-default: #6ee7b7;
  --char-correct: #34d399;
  --char-correct-bg: rgba(52, 211, 153, 0.1);
  --char-incorrect: #ef4444;
  --char-incorrect-bg: rgba(239, 68, 68, 0.2);
  --char-current: #10b981;
  --border-glass: rgba(16, 185, 129, 0.1);
  --shadow-glass: 0 8px 32px 0 rgba(6, 78, 59, 0.3);
}

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

body {
  font-family: 'Outfit', 'Noto Sans JP', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Background Animated Glows */
.app-background-glow {
  position: absolute;
  top: -10%;
  left: -10%;
  width: 120%;
  height: 120%;
  background: radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.15) 0%, transparent 40%),
              radial-gradient(circle at 90% 80%, rgba(168, 85, 247, 0.15) 0%, transparent 45%);
  z-index: -1;
  pointer-events: none;
}

/* App Layout Container */
.app-container {
  width: 100%;
  max-width: 900px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-height: 90vh;
}

/* Glassmorphism Card Style */
.card {
  background: var(--bg-secondary);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: 20px;
  box-shadow: var(--shadow-glass);
  padding: 24px;
}

/* Header */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  font-size: 1.8rem;
  filter: drop-shadow(0 0 10px var(--accent-glow));
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

.app-header h1 {
  font-size: 1.8rem;
  font-weight: 800;
  background: linear-gradient(135deg, #fff 0%, #a5b4fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.header-actions {
  display: flex;
  gap: 10px;
}

/* Buttons */
.icon-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  padding: 8px 16px;
  border-radius: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
  font-size: 0.9rem;
  transition: var(--transition-smooth);
}

.icon-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.2);
}

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

.action-btn {
  padding: 12px 24px;
  border-radius: 12px;
  border: none;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition-smooth);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.primary-btn {
  background: var(--accent-color);
  color: #fff;
  box-shadow: 0 4px 14px 0 rgba(79, 70, 229, 0.4);
}

.primary-btn:hover {
  background: #4338ca;
  box-shadow: 0 6px 20px 0 rgba(79, 70, 229, 0.6);
  transform: translateY(-2px);
}

.primary-btn:disabled {
  background: var(--text-dark);
  box-shadow: none;
  cursor: not-allowed;
  transform: none;
}

.secondary-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
}

.secondary-btn:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

.secondary-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
/* SVG Icons styling */
.svg-icon {
  width: 1.25em;
  height: 1.25em;
  display: inline-block;
  vertical-align: middle;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
  transition: transform 0.2s ease;
}

.header-actions .svg-icon, 
.controls-panel .svg-icon {
  margin-right: 6px;
}

.logo-svg {
  width: 1.5em;
  height: 1.5em;
  fill: var(--accent-color);
  stroke: none;
}

.voice-svg {
  width: 1.4rem;
  height: 1.4rem;
}

.link-svg {
  margin-left: 6px;
  width: 1em;
  height: 1em;
}
.premium-btn {
  background: var(--accent-premium);
  color: #fff;
  box-shadow: 0 4px 14px 0 rgba(168, 85, 247, 0.4);
}

.premium-btn:hover {
  filter: brightness(1.1);
  box-shadow: 0 6px 20px 0 rgba(168, 85, 247, 0.6);
  transform: translateY(-2px);
}

.danger-btn {
  background: var(--char-incorrect-bg);
  border: 1px solid rgba(239, 68, 68, 0.4);
  color: #ef4444;
}

.danger-btn:hover {
  background: rgba(239, 68, 68, 0.3);
  transform: translateY(-2px);
}

/* Stats Bar */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  text-align: center;
  padding: 16px 24px;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-value {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-primary);
  text-shadow: 0 0 10px rgba(255, 255, 255, 0.1);
}

/* Main Workspace */
.main-workspace {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.typing-card {
  min-height: 320px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: var(--transition-smooth);
  min-width: 0;
  overflow: hidden;
}

.typing-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding-bottom: 12px;
}

.mode-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.mode-indicator .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--text-dark);
}

.mode-indicator .dot.active {
  background-color: var(--char-correct);
  box-shadow: 0 0 8px var(--char-correct);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.3); opacity: 0.5; }
  100% { transform: scale(1); opacity: 1; }
}

.voice-indicator {
  cursor: pointer;
  font-size: 1.2rem;
  opacity: 0.7;
  transition: var(--transition-smooth);
}

.voice-indicator:hover {
  opacity: 1;
  transform: scale(1.1);
}

/* Hidden Input trick */
.hidden-input {
  position: absolute;
  opacity: 0;
  z-index: -999;
}

/* Typing Display Container */
.typing-display-container {
  flex-grow: 1;
  padding: 10px 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  cursor: text;
}



.words-container {
  font-family: 'Fira Code', monospace;
  font-size: 1.45rem;
  line-height: 2.1rem;
  letter-spacing: 0.03em;
  user-select: none;
  min-height: 80px;
  max-height: 400px;
  overflow-y: auto;
  overflow-x: hidden;
  scroll-behavior: smooth;
  color: var(--char-default);
  margin-bottom: 24px;
  white-space: pre-wrap;
  word-break: break-word;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 8px 4px;
  padding: 10px;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

.chunk-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 0 2px 10px 2px;
  vertical-align: top;
  border-radius: 10px;
  padding: 6px 12px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.04);
  transition: var(--transition-smooth);
  width: 100%;
  max-width: 100%;
  min-width: 0;
  box-sizing: border-box;
}

.chunk-wrapper.completed {
  background: rgba(16, 185, 129, 0.04);
  border-color: rgba(16, 185, 129, 0.15);
}

.chunk-wrapper.active {
  background: rgba(99, 102, 241, 0.06);
  border-color: rgba(99, 102, 241, 0.35);
  box-shadow: 0 0 15px rgba(99, 102, 241, 0.12);
}

/* Progress Bar */
.passage-progress-container {
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 2px;
  margin-bottom: 16px;
  overflow: hidden;
}

.passage-progress-bar {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, #4f46e5, #a855f7);
  transition: width 0.3s ease;
}

.chunk-english {
  font-family: 'Fira Code', monospace;
  font-size: 1.35rem;
  line-height: 1.8rem;
  color: var(--char-default);
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0 4px;
  width: 100%;
  box-sizing: border-box;
}

.chunk-translation {
  font-size: 0.95rem;
  color: #a5b4fc;
  font-family: 'Outfit', 'Noto Sans JP', sans-serif;
  opacity: 0;
  min-height: 24px;
  line-height: 1.4rem;
  text-align: center;
  font-weight: 500;
  margin-top: 8px;
  transition: opacity 0.3s ease, transform 0.3s ease;
  transform: translateY(3px);
  pointer-events: none;
}

.chunk-translation.visible {
  opacity: 1;
  transform: translateY(0);
}

.chunk-separator {
  display: none;
}

.word-wrapper {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  vertical-align: bottom;
}

.word-translation {
  font-size: 0.75rem;
  color: #34d399;
  font-family: 'Outfit', 'Noto Sans JP', sans-serif;
  opacity: 0;
  height: 16px;
  line-height: 16px;
  overflow: hidden;
  text-align: center;
  font-weight: 500;
  margin-bottom: 2px;
  transition: opacity 0.2s ease, transform 0.2s ease;
  transform: translateY(-2px);
  pointer-events: none;
  white-space: nowrap;
}

.word-translation.visible {
  opacity: 1;
  transform: translateY(0);
}

.word-letters {
  display: inline-flex;
}

/* Typing feedback highlight styling */
.char {
  position: relative;
  transition: all 0.08s ease;
  border-radius: 2px;
  border-bottom: 2px solid transparent;
}

.char.correct {
  color: var(--char-correct);
  background-color: var(--char-correct-bg);
  text-shadow: 0 0 4px rgba(16, 185, 129, 0.4);
}

.char.incorrect {
  color: var(--char-incorrect);
  background-color: var(--char-incorrect-bg);
  animation: shake 0.15s ease-in-out;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}

/* Blinking Typing Cursor */
.char.current {
  color: var(--text-primary);
  border-bottom: 2px solid var(--char-current);
  animation: cursorBlink 1s step-end infinite;
}

@keyframes cursorBlink {
  from, to { border-color: transparent; }
  50% { border-color: var(--char-current); }
}

/* Focus Alert Overlay */
.focus-notice {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(10, 12, 16, 0.85);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  font-size: 1.1rem;
  color: var(--text-muted);
  pointer-events: none;
  opacity: 0;
  transition: var(--transition-smooth);
}

.typing-display-container:not(.focused) .focus-notice {
  opacity: 1;
}

.placeholder-text {
  color: var(--text-dark);
  font-style: italic;
}

/* Slash Translation styling */
.slash-translation-container {
  border-top: 1px dashed rgba(255, 255, 255, 0.1);
  padding-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 80px;
}

.translation-chunk {
  display: flex;
  flex-direction: column;
  gap: 4px;
  opacity: 0;
  transform: translateY(10px);
  animation: fadeInUp 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

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

.translation-chunk .orig-chunk {
  font-family: 'Fira Code', monospace;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.translation-chunk .trans-chunk {
  font-size: 1.15rem;
  font-weight: 500;
  color: #a5b4fc;
}

/* Controls Panel */
.controls-panel {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(5, 5, 10, 0.8);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition-smooth);
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  width: 90%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.95);
  transition: var(--transition-smooth);
}

.modal-overlay.open .modal-content {
  transform: scale(1);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 14px;
  margin-bottom: 20px;
}

.modal-header h2 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
}

.close-btn {
  background: none;
  border: none;
  font-size: 1.8rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.close-btn:hover {
  color: var(--text-primary);
}

.modal-body {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.modal-footer {
  margin-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 16px;
  display: flex;
  justify-content: flex-end;
}

/* Form Styling */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
}

.form-input {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border-glass);
  border-radius: 10px;
  color: var(--text-primary);
  padding: 12px;
  font-family: inherit;
  font-size: 1rem;
  transition: var(--transition-smooth);
  width: 100%;
}

.form-input:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 10px rgba(79, 70, 229, 0.3);
}

.form-help {
  font-size: 0.8rem;
  color: var(--text-dark);
}

.form-group-checkbox {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  user-select: none;
  font-size: 0.95rem;
}

.form-group-checkbox input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent-color);
  cursor: pointer;
}

.form-range {
  accent-color: var(--accent-color);
  cursor: pointer;
  width: 100%;
}

.import-actions-row {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 12px;
}

.ai-status-container {
  padding: 12px;
  border-radius: 10px;
  font-size: 0.9rem;
  min-height: 40px;
  display: none;
}

.ai-status-container.show {
  display: block;
}

.ai-status-container.loading {
  background: rgba(79, 70, 229, 0.1);
  border: 1px solid rgba(79, 70, 229, 0.2);
  color: #a5b4fc;
}

.ai-status-container.success {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  color: #34d399;
}

.ai-status-container.error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.2);
  color: #f87171;
}

.manual-notice {
  font-size: 0.85rem;
  color: var(--text-dark);
  line-height: 1.4;
  border-left: 3px solid var(--border-glass);
  padding-left: 12px;
  margin-top: 10px;
}

/* Statistics Grid & List */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

.grid-stat-card {
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-glass);
  padding: 16px;
  border-radius: 12px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.grid-stat-num {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.grid-stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.section-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-primary);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding-bottom: 6px;
}

/* Library Categorized Grid UI */
#modal-stats .modal-content {
  max-width: 850px;
  width: 95%;
}

.library-category-section {
  margin-bottom: 30px;
}

.library-category-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.library-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}

.library-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-glass);
  border-radius: 16px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 150px;
  transition: var(--transition-smooth);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.library-card:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-4px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.25);
}

.library-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.genre-badge {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 6px;
  text-transform: uppercase;
}

.genre-speech { background: rgba(239, 68, 68, 0.12); color: #f87171; border: 1px solid rgba(239, 68, 68, 0.25); }
.genre-alice { background: rgba(59, 130, 246, 0.12); color: #60a5fa; border: 1px solid rgba(59, 130, 246, 0.25); }
.genre-myth { background: rgba(16, 185, 129, 0.12); color: #34d399; border: 1px solid rgba(16, 185, 129, 0.25); }
.genre-bible { background: rgba(168, 85, 247, 0.12); color: #c084fc; border: 1px solid rgba(168, 85, 247, 0.25); }

.clear-badge {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 6px;
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.3);
  display: flex;
  align-items: center;
  gap: 4px;
}

.library-card-title {
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-primary);
  margin-bottom: 16px;
  flex-grow: 1;
}

.library-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  padding-top: 10px;
}

.library-card-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.library-card-play-btn {
  background: var(--accent-premium);
  color: #fff;
  border: none;
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition-smooth);
}

.library-card-play-btn:hover {
  filter: brightness(1.1);
  transform: scale(1.05);
}

.empty-list-notice {
  text-align: center;
  color: var(--text-dark);
  font-size: 0.9rem;
  padding: 20px;
}

/* AI Analysis Manual Trigger UI */
.analysis-prompt-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px dashed rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  text-align: center;
  max-width: 500px;
  margin: 40px auto;
}

.analysis-prompt-text {
  font-size: 1.15rem;
  color: var(--text-primary);
  margin-bottom: 8px;
  font-weight: 500;
}

.analysis-prompt-sub {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Tabs for Library */
.library-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 12px;
  margin-bottom: 16px;
}

.library-tab {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-glass);
  color: var(--text-muted);
  padding: 8px 16px;
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.library-tab:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.2);
}

.library-tab.active {
  background: var(--accent-color);
  color: #fff;
  border-color: var(--accent-color);
  box-shadow: 0 0 12px var(--accent-glow);
}

/* Google AdSense slot styling */
.adsense-slot {
  width: 100%;
  margin: 16px 0;
  text-align: center;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-glass);
  border-radius: 16px;
  min-height: 90px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: relative;
  overflow: hidden;
  box-sizing: border-box;
}

.adsense-slot::before {
  content: "スポンサーリンク";
  font-size: 0.65rem;
  color: var(--text-dark);
  position: absolute;
  top: 4px;
  left: 8px;
}

/* Genre badges extra */
.genre-quotes {
  background: rgba(168, 85, 247, 0.15) !important;
  color: #c084fc !important;
  border: 1px solid rgba(168, 85, 247, 0.3) !important;
}

/* Interactive Keyboard Guide Styling */
.keyboard-guide {
  margin-top: 10px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  user-select: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.keyboard-guide.hidden {
  display: none !important;
}

.kb-row {
  display: flex;
  justify-content: center;
  gap: 5px;
}

.kb-key {
  min-width: 42px;
  height: 42px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-glass);
  border-radius: 8px;
  color: var(--text-muted);
  display: flex;
  justify-content: center;
  align-items: center;
  font-family: 'Fira Code', monospace;
  font-size: 0.95rem;
  font-weight: 600;
  transition: all 0.08s ease;
  box-shadow: 0 2px 4px rgba(0,0,0,0.15);
}

body.theme-light .kb-key {
  background: rgba(0, 0, 0, 0.03);
  color: var(--text-muted);
}

.kb-key.space-key {
  flex-grow: 4;
  max-width: 250px;
}

.kb-key.next-key {
  background: var(--char-current);
  color: #fff;
  border-color: var(--char-current);
  box-shadow: 0 0 12px var(--accent-glow);
  transform: translateY(-2px);
}

.kb-key.active-press {
  background: var(--char-correct);
  color: #fff;
  border-color: var(--char-correct);
  box-shadow: 0 0 15px rgba(16, 185, 129, 0.6);
  transform: scale(0.95) translateY(1px);
}

.kb-key.error-press {
  background: var(--char-incorrect);
  color: #fff;
  border-color: var(--char-incorrect);
  animation: shake 0.15s ease-in-out;
}

/* Success Sparkles animation */
@keyframes successConfetti {
  0% { transform: scale(0.5); opacity: 0; }
  50% { transform: scale(1.1); opacity: 1; }
  100% { transform: scale(1); opacity: 0; }
}

.success-splash {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(16,185,129,0.15) 0%, transparent 70%);
  pointer-events: none;
  animation: successSplashAnim 1.2s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  z-index: 10;
}

@keyframes successSplashAnim {
  0% { opacity: 0; transform: scale(0.8); }
  30% { opacity: 1; }
  100% { opacity: 0; transform: scale(1.2); }
}