@import url('../assets/fonts/fonts.css');

/* ==========================================================================
   SHARED COURSEBOOK VOCABULARY COMPANION STYLESHEET
   Curriculum: 6th Grade (ΣΤ' Δημοτικού)
   Inspired by classic Greek ELT Companion layout with modern UI aesthetics
   ========================================================================== */

:root {
  /* Color Palette */
  --primary-color: #c05621;         /* Warm rust/amber matching companion header */
  --primary-hover: #9c4221;
  --primary-light: #fffaf0;
  --primary-border: #feebc8;
  
  --secondary-color: #2b6cb0;       /* Royal Greek ELT blue for grammar notes */
  --secondary-light: #ebf8ff;
  
  --accent-gold: #d69e2e;
  --accent-green: #38a169;
  --accent-red: #e53e3e;
  
  --text-dark: #1a202c;
  --text-medium: #4a5568;
  --text-light: #718096;
  --text-muted: #a0aec0;
  
  --bg-page: #f7fafc;
  --bg-card: #ffffff;
  --bg-subtle: #edf2f7;
  
  --border-table: #e2e8f0;
  --border-warm: #fbd38d;
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.08);
  --shadow-glow: 0 0 18px rgba(192, 86, 33, 0.25);
  
  --transition-fast: 0.18s ease;
  --transition-normal: 0.25s ease;
}

/* Reset & Base Setup */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background-color: var(--bg-page);
  color: var(--text-dark);
  line-height: 1.55;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Background Ambient Orbs */
.bg-decoration {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
}

.orb-1 {
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, #fbd38d 0%, rgba(254, 215, 226, 0) 70%);
  top: -100px;
  right: -50px;
}

.orb-2 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, #bee3f8 0%, rgba(226, 232, 240, 0) 70%);
  bottom: 50px;
  left: -80px;
}

/* Main Container */
.content-container, .header-container, .footer-container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 1;
}

/* Header */
.main-header {
  background: linear-gradient(180deg, #ffffff 0%, rgba(255, 255, 255, 0.92) 100%);
  border-bottom: 1px solid var(--border-table);
  padding: 24px 0 16px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
}

.badge {
  font-size: 0.76rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.curriculum-badge {
  background-color: #ebf8ff;
  color: #2b6cb0;
  border: 1px solid #bee3f8;
}

.cefr-badge {
  background-color: #feebc8;
  color: #c05621;
  border: 1px solid #fbd38d;
}

.unit-badge {
  background-color: #f0fff4;
  color: #276749;
  border: 1px solid #c6f6d5;
}

.header-title-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 20px;
}

.main-title {
  font-family: 'Outfit', sans-serif;
  font-size: 2.1rem;
  font-weight: 800;
  color: #1a202c;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.sub-title {
  font-size: 0.95rem;
  color: var(--text-medium);
  margin-top: 4px;
}

.quick-stats {
  display: flex;
  gap: 12px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-table);
  border-radius: var(--radius-md);
  padding: 8px 16px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.stat-num {
  display: block;
  font-family: 'Outfit', sans-serif;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--primary-color);
  line-height: 1;
}

.stat-label {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-light);
  text-transform: uppercase;
}

/* Controls Bar */
.controls-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 12px;
}

/* View Modes Tabs */
.view-modes {
  display: flex;
  background-color: var(--bg-subtle);
  padding: 4px;
  border-radius: var(--radius-md);
  gap: 4px;
  border: 1px solid var(--border-table);
}

.mode-btn {
  background: none;
  border: none;
  padding: 8px 14px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-medium);
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all var(--transition-fast);
}

.mode-btn:hover {
  color: var(--text-dark);
}

.mode-btn.active {
  background-color: #ffffff;
  color: var(--primary-color);
  box-shadow: var(--shadow-sm);
}

/* Search & Speed Filter */
.search-filter-group {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.search-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: 12px;
  font-size: 0.9rem;
  pointer-events: none;
  opacity: 0.6;
}

#searchInput {
  padding: 8px 32px 8px 36px;
  font-size: 0.88rem;
  border: 1px solid var(--border-table);
  border-radius: var(--radius-md);
  background: #ffffff;
  width: 260px;
  outline: none;
  transition: border var(--transition-fast), box-shadow var(--transition-fast);
}

#searchInput:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(192, 86, 33, 0.15);
}

.clear-search {
  position: absolute;
  right: 10px;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.85rem;
  display: none;
}

.clear-search.visible {
  display: block;
}

.audio-speed-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  color: var(--text-medium);
}

.speed-select {
  padding: 6px 10px;
  font-size: 0.82rem;
  font-weight: 600;
  border: 1px solid var(--border-table);
  border-radius: var(--radius-sm);
  background-color: #ffffff;
  color: var(--text-dark);
  cursor: pointer;
  outline: none;
}

/* Category Filter Pills */
.category-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}

.pill-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-table);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-medium);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.pill-btn:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.pill-btn.active {
  background-color: var(--primary-color);
  color: #ffffff;
  border-color: var(--primary-color);
  box-shadow: 0 2px 6px rgba(192, 86, 33, 0.25);
}

/* Floating Audio Player HUD */
.audio-hud {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(26, 32, 44, 0.94);
  color: #ffffff;
  padding: 10px 20px;
  border-radius: var(--radius-full);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(12px);
  z-index: 1000;
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from { transform: translate(-50%, 40px); opacity: 0; }
  to { transform: translate(-50%, 0); opacity: 1; }
}

.hud-content {
  display: flex;
  align-items: center;
  gap: 20px;
}

.hud-indicator {
  display: flex;
  align-items: center;
  gap: 12px;
}

.hud-waves {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 18px;
}

.wave-bar {
  width: 3px;
  background-color: #fbd38d;
  border-radius: 2px;
  animation: audioWave 1s ease-in-out infinite alternate;
}

.wave-bar:nth-child(1) { height: 6px; animation-delay: 0.1s; }
.wave-bar:nth-child(2) { height: 16px; animation-delay: 0.3s; }
.wave-bar:nth-child(3) { height: 11px; animation-delay: 0.2s; }
.wave-bar:nth-child(4) { height: 8px; animation-delay: 0.4s; }

@keyframes audioWave {
  0% { height: 4px; }
  100% { height: 18px; }
}

.hud-text-block {
  display: flex;
  flex-direction: column;
}

.hud-type {
  font-size: 0.68rem;
  text-transform: uppercase;
  color: #fbd38d;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.hud-title {
  font-size: 0.92rem;
  font-weight: 600;
}

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

.hud-btn {
  background: rgba(255, 255, 255, 0.15);
  border: none;
  color: #ffffff;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  transition: background var(--transition-fast);
}

.hud-btn:hover {
  background: rgba(255, 255, 255, 0.3);
}

/* View Panels */
.view-panel {
  display: none;
  padding: 24px 0 60px;
}

.view-panel.active {
  display: block;
}

/* VIEW 1: TABLE COMPANION (Exact Screenshot Style) */
.table-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-table);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.table-header-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 20px;
  background: #fcf8f3;
  border-bottom: 1px solid var(--border-warm);
}

.meta-label {
  font-family: 'Outfit', sans-serif;
  font-style: italic;
  font-weight: 700;
  color: #3182ce;
  font-size: 0.95rem;
}

.meta-info {
  font-size: 0.82rem;
  color: var(--text-medium);
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.vocab-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.vocab-table thead th {
  font-family: 'Outfit', sans-serif;
  color: var(--primary-color);
  font-size: 1.15rem;
  font-weight: 700;
  padding: 14px 20px;
  background-color: #ffffff;
  border-bottom: 2px solid var(--border-warm);
  letter-spacing: -0.01em;
}

.vocab-table th.col-word { width: 33%; }
.vocab-table th.col-meaning { width: 32%; }
.vocab-table th.col-example { width: 30%; }
.vocab-table th.col-actions { width: 5%; text-align: center; }

.vocab-table tbody tr {
  border-bottom: 1px solid var(--border-table);
  transition: background-color var(--transition-fast);
}

.vocab-table tbody tr:hover {
  background-color: #fffdfa;
}

.vocab-table tbody tr.is-playing {
  background-color: #fffaf0 !important;
  box-shadow: inset 3px 0 0 var(--primary-color);
}

.vocab-table td {
  padding: 14px 20px;
  vertical-align: middle;
}

/* Word Column Formatting */
.word-cell {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.row-index {
  font-family: 'Outfit', sans-serif;
  font-style: italic;
  font-weight: 800;
  font-size: 1.05rem;
  color: #2d3748;
  min-width: 20px;
  margin-top: 1px;
}

.word-main-wrap {
  flex: 1;
}

.word-line {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px;
}

.word-headword {
  font-size: 1.15rem;
  font-weight: 800;
  color: #1a202c;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.word-headword:hover {
  color: var(--primary-color);
}

.word-ipa {
  font-family: 'Lucida Sans Unicode', 'Lucida Grande', 'Segoe UI', sans-serif;
  color: var(--text-medium);
  font-size: 0.94rem;
}

.word-pos {
  color: var(--text-light);
  font-size: 0.92rem;
}

.word-derivatives {
  margin-top: 3px;
  font-size: 0.86rem;
  color: var(--secondary-color);
  font-weight: 500;
}

.word-visual-badge {
  font-size: 1.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  background: var(--bg-subtle);
  border: 1px solid var(--border-table);
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.word-visual-badge:hover {
  transform: scale(1.15);
}

/* Audio Play Buttons */
.audio-btn {
  background: #f7fafc;
  border: 1px solid var(--border-table);
  color: var(--text-medium);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.82rem;
  margin-left: 6px;
  transition: all var(--transition-fast);
  vertical-align: middle;
}

.audio-btn:hover {
  background: var(--primary-light);
  border-color: var(--primary-color);
  color: var(--primary-color);
  transform: scale(1.08);
}

.audio-btn.playing {
  background: var(--primary-color);
  color: #ffffff;
  border-color: var(--primary-color);
  box-shadow: 0 0 8px rgba(192, 86, 33, 0.4);
  animation: pulse 1.2s infinite;
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.12); }
  100% { transform: scale(1); }
}

/* Meaning Column */
.meaning-cell {
  position: relative;
  font-size: 0.96rem;
}

.meaning-greek {
  color: #2d3748;
  font-weight: 600;
  display: block;
  margin-bottom: 3px;
}

.meaning-en {
  color: var(--text-light);
  font-size: 0.86rem;
  line-height: 1.35;
}

/* Example Column */
.example-cell {
  font-style: italic;
  color: #2d3748;
  font-size: 0.96rem;
  line-height: 1.45;
}

.example-target-word {
  font-weight: 700;
  color: #9c4221;
  font-style: normal;
  background-color: #feebc8;
  padding: 1px 4px;
  border-radius: 4px;
}

/* Actions Column */
.play-all-btn {
  background: #ffffff;
  border: 1px solid var(--border-table);
  color: var(--primary-color);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.play-all-btn:hover {
  background: var(--primary-color);
  color: #ffffff;
  border-color: var(--primary-color);
}

.play-all-btn.playing {
  background: #276749;
  color: #ffffff;
  border-color: #276749;
}

/* VIEW 2: FLASHCARD STYLING */
.cards-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.cards-counter {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-medium);
}

.cards-nav-btns {
  display: flex;
  gap: 8px;
}

.nav-arrow-btn, .shuffle-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-table);
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--text-dark);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.nav-arrow-btn:hover, .shuffle-btn:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.flashcard-container {
  perspective: 1000px;
  max-width: 580px;
  height: 380px;
  margin: 0 auto;
}

.flashcard {
  width: 100%;
  height: 100%;
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.6s cubic-bezier(0.4, 0.2, 0.2, 1);
  cursor: pointer;
}

.flashcard.flipped {
  transform: rotateY(180deg);
}

.card-face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--border-table);
  background: #ffffff;
  text-align: center;
}

.card-front {
  background: linear-gradient(135deg, #ffffff 0%, #fffaf0 100%);
  border-color: var(--border-warm);
}

.card-back {
  transform: rotateY(180deg);
  background: linear-gradient(135deg, #ffffff 0%, #ebf8ff 100%);
  border-color: #bee3f8;
  align-items: stretch;
  text-align: left;
}

.card-category-badge {
  position: absolute;
  top: 16px;
  left: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary-color);
  background: #feebc8;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
}

.card-visual-box {
  font-size: 4rem;
  margin-bottom: 12px;
}

.card-word {
  font-family: 'Outfit', sans-serif;
  font-size: 2.2rem;
  font-weight: 800;
  color: #1a202c;
  margin-bottom: 4px;
}

.card-ipa {
  font-family: 'Lucida Sans Unicode', 'Lucida Grande', sans-serif;
  font-size: 1.1rem;
  color: var(--text-medium);
  margin-bottom: 4px;
}

.card-pos {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 18px;
}

.card-audio-btn {
  background: var(--primary-color);
  color: #ffffff;
  border: none;
  padding: 10px 22px;
  border-radius: var(--radius-full);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(192, 86, 33, 0.3);
  transition: all var(--transition-fast);
}

.card-audio-btn:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
}

.card-hint {
  position: absolute;
  bottom: 14px;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.card-back-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--secondary-color);
  text-transform: uppercase;
  margin-bottom: 10px;
}

.card-meaning-gr {
  font-size: 1.4rem;
  font-weight: 700;
  color: #2d3748;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border-table);
  padding-bottom: 8px;
}

.card-def-box, .card-example-box {
  margin-bottom: 14px;
}

.def-header, .example-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-medium);
  margin-bottom: 4px;
}

.mini-audio-btn {
  background: none;
  border: 1px solid var(--border-table);
  border-radius: 50%;
  width: 24px;
  height: 24px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  transition: all var(--transition-fast);
}

.mini-audio-btn:hover {
  background: var(--primary-light);
  border-color: var(--primary-color);
}

.card-def-en {
  font-size: 0.92rem;
  color: #2d3748;
}

.card-example {
  font-size: 0.92rem;
  font-style: italic;
  color: #4a5568;
}

/* VIEW 3: LISTENING CHALLENGE QUIZ */
.quiz-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-table);
  padding: 30px;
  max-width: 680px;
  margin: 0 auto;
  box-shadow: var(--shadow-md);
}

.quiz-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-table);
}

.quiz-score-badge, .quiz-streak-badge {
  font-size: 0.95rem;
  font-weight: 700;
}

.quiz-streak-badge {
  color: var(--primary-color);
}

.quiz-restart-btn {
  background: none;
  border: 1px solid var(--border-table);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  cursor: pointer;
  font-weight: 600;
}

.quiz-prompt-box {
  text-align: center;
  margin-bottom: 28px;
}

.quiz-instruction {
  font-size: 0.9rem;
  color: var(--text-medium);
  display: block;
  margin-bottom: 14px;
}

.quiz-audio-trigger-row {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.quiz-play-btn {
  background: linear-gradient(135deg, #c05621 0%, #dd6b20 100%);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-full);
  padding: 14px 28px;
  font-size: 1.05rem;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 6px 16px rgba(192, 86, 33, 0.35);
  transition: all var(--transition-fast);
}

.quiz-play-btn:hover {
  transform: scale(1.04);
}

.quiz-clue {
  font-size: 0.82rem;
  color: var(--text-light);
  font-style: italic;
}

.quiz-options-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-bottom: 24px;
}

.quiz-option-btn {
  background: var(--bg-card);
  border: 2px solid var(--border-table);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  min-height: 82px;
  font-size: 1.05rem;
  color: var(--text-dark);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 14px;
  transition: all var(--transition-fast);
  text-align: left;
  box-shadow: var(--shadow-sm);
  position: relative;
}

.quiz-option-btn:hover:not(:disabled) {
  border-color: var(--primary-color);
  background-color: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.quiz-option-letter {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  min-width: 32px;
  border-radius: var(--radius-full);
  background: var(--bg-subtle);
  border: 1px solid var(--border-table);
  font-size: 0.88rem;
  font-weight: 800;
  color: var(--text-medium);
  transition: all var(--transition-fast);
}

.quiz-option-btn:hover:not(:disabled) .quiz-option-letter {
  background: var(--primary-color);
  color: #ffffff;
  border-color: var(--primary-color);
}

.quiz-option-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.quiz-option-greek {
  font-size: 1.08rem;
  font-weight: 700;
  line-height: 1.35;
  color: #1a202c;
  font-family: inherit;
}

.quiz-option-revealed-word {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 4px;
  padding: 3px 10px;
  background: rgba(43, 138, 62, 0.12);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 700;
  color: #2b8a3e;
  animation: fadeIn 0.3s ease;
  width: fit-content;
}

.quiz-option-revealed-word small {
  color: #4a5568;
  font-weight: 500;
  font-style: italic;
}

.quiz-option-btn.correct {
  background-color: #f0fff4 !important;
  border-color: var(--accent-green) !important;
  color: #22543d !important;
}

.quiz-option-btn.correct .quiz-option-letter {
  background-color: var(--accent-green) !important;
  border-color: var(--accent-green) !important;
  color: #ffffff !important;
}

.quiz-option-btn.wrong {
  background-color: #fff5f5 !important;
  border-color: var(--accent-red) !important;
  color: #742a2a !important;
}

.quiz-option-btn.wrong .quiz-option-letter {
  background-color: var(--accent-red) !important;
  border-color: var(--accent-red) !important;
  color: #ffffff !important;
}

.quiz-feedback-box {
  background: #f7fafc;
  border: 1px solid var(--border-table);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.feedback-text {
  flex: 1;
}

.feedback-main {
  font-size: 1rem;
  font-weight: 700;
  color: #2d3748;
}

.feedback-sub {
  font-size: 0.88rem;
  color: var(--text-medium);
  margin-top: 2px;
}

.next-question-btn {
  background: var(--secondary-color);
  color: #ffffff;
  border: none;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 0.88rem;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.next-question-btn:hover {
  background: #2b5b88;
}

/* VIEW 4: TTS EXPORT & SCRIPT */
.export-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-table);
  padding: 26px;
  box-shadow: var(--shadow-md);
}

.export-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-table);
}

.export-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1.4rem;
  font-weight: 800;
  color: #1a202c;
}

.export-subtitle {
  font-size: 0.88rem;
  color: var(--text-medium);
  margin-top: 4px;
}

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

.export-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-table);
  padding: 8px 14px;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-dark);
  text-decoration: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all var(--transition-fast);
}

.export-btn:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.export-btn.primary {
  background: var(--primary-color);
  color: #ffffff;
  border-color: var(--primary-color);
}

.export-btn.primary:hover {
  background: var(--primary-hover);
}

.tts-script-preview-wrap {
  background: #1a202c;
  border-radius: var(--radius-md);
  padding: 18px;
  max-height: 480px;
  overflow-y: auto;
}

.tts-script-content {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.84rem;
  color: #e2e8f0;
  line-height: 1.6;
  white-space: pre-wrap;
}

/* Word Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn 0.2s ease;
}

.modal-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  max-width: 540px;
  width: 100%;
  position: relative;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
  overflow: hidden;
  border: 1px solid var(--border-warm);
}

.modal-close-btn {
  position: absolute;
  top: 14px;
  right: 14px;
  background: rgba(0, 0, 0, 0.05);
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-medium);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  transition: background var(--transition-fast);
}

.modal-close-btn:hover {
  background: rgba(0, 0, 0, 0.1);
}

.modal-body {
  padding: 28px;
}

/* Footer */
.main-footer {
  background: #ffffff;
  border-top: 1px solid var(--border-table);
  padding: 24px 0;
  text-align: center;
  margin-top: 40px;
}

.footer-brand {
  font-size: 0.88rem;
  font-weight: 700;
  color: #2d3748;
}

.footer-note {
  font-size: 0.78rem;
  color: var(--text-light);
  margin-top: 4px;
}

/* Responsive adjustments */
@media (max-width: 860px) {
  .header-title-row {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .controls-bar {
    flex-direction: column;
    align-items: stretch;
  }
  
  .search-filter-group {
    width: 100%;
  }
  
  #searchInput {
    width: 100%;
  }
  
  .quiz-options-grid,
  .def-quiz-options-grid {
    grid-template-columns: 1fr;
  }

  .printable-toolbar {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }

  .paper-meta-row {
    flex-direction: column;
    gap: 6px;
  }
}

/* DEFINITION CHALLENGE QUIZ */
.def-quiz-options-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-bottom: 24px;
}

.def-quiz-option-btn {
  background: var(--bg-card);
  border: 2px solid var(--border-table);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  min-height: 88px;
  font-size: 0.98rem;
  color: var(--text-dark);
  cursor: pointer;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  transition: all var(--transition-fast);
  text-align: left;
  box-shadow: var(--shadow-sm);
  position: relative;
}

.def-quiz-option-btn:hover:not(:disabled) {
  border-color: var(--primary-color);
  background-color: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.def-quiz-option-text {
  font-size: 0.98rem;
  font-weight: 600;
  line-height: 1.45;
  color: #1a202c;
  font-family: inherit;
}

.def-quiz-option-btn.correct {
  background-color: #f0fff4 !important;
  border-color: var(--accent-green) !important;
  color: #22543d !important;
}

.def-quiz-option-btn.correct .quiz-option-letter {
  background-color: var(--accent-green) !important;
  border-color: var(--accent-green) !important;
  color: #ffffff !important;
}

.def-quiz-option-btn.wrong {
  background-color: #fff5f5 !important;
  border-color: var(--accent-red) !important;
  color: #742a2a !important;
}

.def-quiz-option-btn.wrong .quiz-option-letter {
  background-color: var(--accent-red) !important;
  border-color: var(--accent-red) !important;
  color: #ffffff !important;
}

/* VIEW 5: PRINTABLE STUDY SHEET */
.printable-toolbar {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-table);
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

.printable-toolbar-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: #1a202c;
  margin-bottom: 4px;
}

.printable-toolbar-desc {
  font-size: 0.88rem;
  color: var(--text-medium);
  max-width: 700px;
}

.print-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, #2b6cb0 0%, #3182ce 100%);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-md);
  padding: 12px 24px;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(49, 130, 206, 0.3);
  transition: all var(--transition-fast);
}

.print-action-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(49, 130, 206, 0.4);
}

.printable-sheet-container {
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-table);
  padding: 36px 40px;
  box-shadow: var(--shadow-md);
  max-width: 960px;
  margin: 0 auto;
}

.printable-paper-header {
  border-bottom: 2px solid #2d3748;
  padding-bottom: 20px;
  margin-bottom: 24px;
}

.paper-kicker {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--primary-color);
  margin-bottom: 6px;
}

.paper-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1.85rem;
  font-weight: 800;
  color: #1a202c;
  margin-bottom: 4px;
}

.paper-subtitle {
  font-size: 0.95rem;
  color: var(--text-medium);
  margin-bottom: 16px;
}

.paper-meta-row {
  display: flex;
  justify-content: space-between;
  background: #f8fafc;
  padding: 10px 16px;
  border-radius: 6px;
  font-size: 0.88rem;
  color: #334155;
  border: 1px dashed #cbd5e1;
}

.printable-words-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.printable-word-card {
  background: #fafbfc;
  border: 1px solid #e2e8f0;
  border-left: 4px solid var(--primary-color);
  border-radius: 8px;
  padding: 14px 18px;
  transition: all var(--transition-fast);
  page-break-inside: avoid;
  break-inside: avoid;
}

.pword-header {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 6px;
  flex-wrap: wrap;
}

.pword-num {
  font-weight: 800;
  color: var(--primary-color);
  font-size: 1.05rem;
}

.pword-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: #1a202c;
}

.pword-pos {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--secondary-color);
}

.pword-ipa {
  font-size: 0.85rem;
  color: #64748b;
  font-family: monospace;
}

.pword-gr {
  font-size: 0.9rem;
  color: #475569;
  font-weight: 600;
  margin-left: auto;
}

.pword-def-row, .pword-example-row {
  font-size: 0.92rem;
  line-height: 1.45;
  margin-top: 4px;
}

.pword-label {
  font-weight: 700;
  color: #334155;
  margin-right: 6px;
}

.pword-def {
  color: #1e293b;
}

.pword-example {
  font-style: italic;
  color: #475569;
}

.printable-paper-footer {
  margin-top: 30px;
  padding-top: 14px;
  border-top: 1px solid #e2e8f0;
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  color: #94a3b8;
}

/* PRINT MEDIA QUERY */
/* =============================================================
   PRINT OPTIMIZATION: COMPACT 2-COLUMN A4 VOCABULARY GUIDE
   Drastically cuts paper usage from 11 pages to ~2-3 pages!
   ============================================================= */
@media print {
  @page {
    size: A4 portrait;
    margin: 8mm 10mm 8mm 10mm;
  }

  *, *::before, *::after {
    box-shadow: none !important;
    text-shadow: none !important;
  }

  body {
    background: #ffffff !important;
    color: #0F172A !important;
    font-size: 8.5pt !important;
    line-height: 1.25 !important;
    -webkit-print-color-adjust: exact !important;
    print-color-adjust: exact !important;
  }

  /* Hide non-printable app UI */
  .no-print,
  .top-quick-quizzes-bar,
  .main-header,
  .app-header,
  .header-container,
  .controls-bar,
  .category-pills,
  .audio-hud,
  #audioHud,
  .main-footer,
  .v2-footer,
  .bg-decoration,
  .modal-overlay,
  #wordModal,
  #viewTable,
  #viewCards,
  #viewQuiz,
  #viewDefQuiz,
  #viewTTS,
  .printable-toolbar {
    display: none !important;
  }

  #viewPrintable {
    display: block !important;
    padding: 0 !important;
    margin: 0 !important;
  }

  .content-container {
    max-width: 100% !important;
    padding: 0 !important;
    margin: 0 !important;
    width: 100% !important;
  }

  .printable-sheet-container, .printable-paper-sheet {
    background: #ffffff !important;
    border: none !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    padding: 0 !important;
    margin: 0 !important;
    max-width: 100% !important;
    width: 100% !important;
  }

  .printable-paper-header {
    border-bottom: 1.5px solid #0F172A !important;
    padding-bottom: 6px !important;
    margin-bottom: 8px !important;
  }

  .paper-kicker {
    font-family: 'JetBrains Mono', monospace !important;
    font-size: 7.5pt !important;
    font-weight: 700 !important;
    color: #0F172A !important;
    margin-bottom: 2px !important;
    letter-spacing: 0.5px !important;
  }

  .paper-title {
    font-family: 'Bricolage Grotesque', sans-serif !important;
    font-size: 13.5pt !important;
    font-weight: 800 !important;
    color: #0F172A !important;
    margin: 0 0 2px 0 !important;
    line-height: 1.15 !important;
  }

  .paper-subtitle {
    font-size: 8pt !important;
    color: #475569 !important;
    margin-bottom: 6px !important;
  }

  .paper-meta-row {
    display: flex !important;
    justify-content: space-between !important;
    background: #F8FAFC !important;
    padding: 4px 10px !important;
    border-radius: 4px !important;
    font-size: 7.5pt !important;
    color: #334155 !important;
    border: 1px dashed #94A3B8 !important;
  }

  /* Compact 2-column grid for printing word cards */
  .printable-words-list {
    display: grid !important;
    grid-template-columns: 1fr 1fr !important;
    gap: 5px 8px !important;
  }

  .printable-word-card {
    background: #FFFFFF !important;
    border: 1px solid #CBD5E1 !important;
    border-left: 3.5px solid #FF5A36 !important;
    border-radius: 4px !important;
    padding: 4px 7px !important;
    box-shadow: none !important;
    page-break-inside: avoid !important;
    break-inside: avoid !important;
    margin-bottom: 0 !important;
  }

  .pword-header {
    display: flex !important;
    align-items: baseline !important;
    gap: 4px !important;
    margin-bottom: 2px !important;
    flex-wrap: wrap !important;
  }

  .pword-num {
    font-family: 'JetBrains Mono', monospace !important;
    font-size: 8.5pt !important;
    font-weight: 800 !important;
    color: #FF5A36 !important;
    min-width: 18px !important;
  }

  .pword-title {
    font-family: 'Bricolage Grotesque', sans-serif !important;
    font-size: 9.5pt !important;
    font-weight: 800 !important;
    color: #0F172A !important;
  }

  .pword-pos {
    font-family: 'JetBrains Mono', monospace !important;
    font-size: 7.2pt !important;
    font-weight: 700 !important;
    color: #475569 !important;
  }

  .pword-ipa {
    font-size: 7.2pt !important;
    color: #64748B !important;
    font-family: monospace !important;
  }

  .pword-gr {
    font-family: 'Bricolage Grotesque', sans-serif !important;
    font-size: 8.5pt !important;
    color: #0F172A !important;
    font-weight: 700 !important;
    margin-left: auto !important;
  }

  .pword-def-row, .pword-example-row {
    font-size: 7.6pt !important;
    line-height: 1.22 !important;
    margin-top: 1px !important;
  }

  .pword-label {
    font-weight: 700 !important;
    font-size: 7.4pt !important;
    color: #334155 !important;
    margin-right: 3px !important;
  }

  .pword-def {
    color: #1E293B !important;
  }

  .pword-example {
    font-style: italic !important;
    color: #475569 !important;
  }

  .printable-paper-footer {
    margin-top: 8px !important;
    padding-top: 4px !important;
    border-top: 1px solid #CBD5E1 !important;
    display: flex !important;
    justify-content: space-between !important;
    font-size: 7pt !important;
    color: #64748B !important;
  }
}