@import url('https://fonts.googleapis.com/css2?family=Rubik:wght@400;500;600;700;800&family=Noto+Sans+Ethiopic:wght@400;500;600;700&display=swap');

:root {
  --primary: #6C63FF;
  --primary-light: #8B85FF;
  --primary-dark: #4A42DB;
  --secondary: #FF6B6B;
  --secondary-light: #FF8E8E;
  --accent: #FFD93D;
  --accent-dark: #F0C800;
  --green: #6BCB77;
  --green-dark: #4CAF50;
  --sky: #4FC3F7;
  --pink: #F48FB1;
  --orange: #FFB74D;
  --bg: #F0F4FF;
  --bg-card: #FFFFFF;
  --text: #2D3436;
  --text-light: #636E72;
  --shadow: 0 4px 15px rgba(108, 99, 255, 0.15);
  --shadow-hover: 0 8px 25px rgba(108, 99, 255, 0.25);
  --radius: 16px;
  --radius-sm: 10px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Rubik', 'Noto Sans Ethiopic', sans-serif;
  background: var(--bg);
  color: var(--text);
  direction: rtl;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ===== HEADER ===== */
.header {
  background: linear-gradient(135deg, var(--primary), var(--primary-light), var(--sky));
  color: white;
  padding: 20px;
  text-align: center;
  box-shadow: 0 4px 20px rgba(108, 99, 255, 0.3);
}

.header h1 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 4px;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
}

.header .subtitle {
  font-size: 1rem;
  opacity: 0.9;
  font-weight: 500;
}

.header .subtitle-tigrinya {
  font-size: 0.95rem;
  opacity: 0.85;
  margin-top: 2px;
}

/* ===== NAVIGATION ===== */
.nav {
  display: flex;
  justify-content: center;
  gap: 8px;
  padding: 12px 16px;
  background: white;
  box-shadow: 0 2px 10px rgba(0,0,0,0.08);
  flex-wrap: wrap;
  position: sticky;
  top: 0;
  z-index: 99;
}

.nav-btn {
  padding: 10px 18px;
  border: 2px solid var(--primary);
  background: white;
  color: var(--primary);
  border-radius: 25px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
  text-align: center;
  line-height: 1.3;
}

.nav-btn:hover {
  background: var(--primary-light);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.nav-btn.active {
  background: var(--primary);
  color: white;
  box-shadow: var(--shadow);
}

.nav-btn.active .lhe,
.nav-btn.active .lti {
  color: white;
}

.nav-audio-btn {
  padding: 10px 14px;
  border: 2px solid var(--primary);
  background: white;
  color: var(--primary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 1.1rem;
  font-family: inherit;
  transition: var(--transition);
  white-space: nowrap;
  margin-right: auto; /* RTL: fills right-side space, pushing toggle to far-left — intentional separation from nav buttons */
}

.nav-audio-btn:hover {
  background: var(--primary-light);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

/* ===== SECTIONS ===== */
.section {
  display: none;
  padding: 20px;
  max-width: 1100px;
  margin: 0 auto;
  animation: fadeIn 0.4s ease;
}

.section.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.section-title {
  text-align: center;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.section-subtitle {
  text-align: center;
  font-size: 1.1rem;
  color: var(--text-light);
  margin-bottom: 24px;
}

/* ===== LETTERS GRID ===== */
.letters-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.letter-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow);
  border: 3px solid transparent;
  position: relative;
  overflow: hidden;
}

.letter-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--sky));
}

.letter-card:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary-light);
}

.letter-card.expanded {
  border-color: var(--primary);
  background: linear-gradient(135deg, #f8f7ff, #f0f4ff);
}

.letter-hebrew {
  font-size: 3rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
}

.letter-name {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-top: 4px;
}

.letter-tigrinya {
  font-size: 0.85rem;
  color: var(--secondary);
  margin-top: 2px;
  font-weight: 600;
}

.letter-sound-badge {
  font-size: 0.95rem;
  color: var(--orange);
  font-weight: 600;
  margin-top: 4px;
}

.letter-details {
  display: none;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 2px dashed var(--primary-light);
  text-align: center;
}

.letter-card.expanded .letter-details {
  display: block;
  animation: fadeIn 0.3s ease;
}

.letter-detail-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px 0;
  font-size: 0.85rem;
}

.letter-detail-label {
  color: var(--text-light);
  font-weight: 500;
}

.letter-detail-value {
  font-weight: 600;
  color: var(--text);
}

.letter-example {
  margin-top: 8px;
  padding: 8px;
  background: white;
  border-radius: var(--radius-sm);
  border: 1px solid #e8e8ff;
}

.letter-example-word {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary-dark);
}

.letter-example-translit {
  font-size: 0.85rem;
  color: var(--orange);
  font-weight: 600;
  direction: ltr;
  margin-top: 2px;
}

.letter-example-meaning {
  font-size: 0.85rem;
  color: var(--secondary);
  font-weight: 600;
  margin-top: 1px;
}

/* ===== NIKUD SECTION ===== */
.nikud-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.nikud-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 3px solid transparent;
}

.nikud-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: var(--accent);
}

.nikud-symbol {
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--primary);
}

.nikud-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin: 6px 0;
}

.nikud-sound {
  font-size: 1.1rem;
  color: var(--secondary);
  font-weight: 700;
}

.nikud-tigrinya {
  font-size: 1.3rem;
  color: var(--green-dark);
  font-weight: 700;
  margin-top: 4px;
}

/* ===== NIKUD LETTER PICKER ===== */
.nikud-letter-picker {
  grid-column: 1 / -1;
  background: white;
  border-radius: var(--radius);
  padding: 16px 20px;
  box-shadow: var(--shadow);
  margin-bottom: 4px;
  text-align: center;
}

.nikud-picker-label {
  font-size: 0.95rem;
  color: var(--text-light);
  margin-bottom: 12px;
  font-weight: 500;
}

.nikud-picker-btns {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px;
}

.nikud-pick-btn {
  width: 42px;
  height: 42px;
  border: 2px solid var(--primary-light);
  background: white;
  border-radius: var(--radius-sm);
  font-size: 1.3rem;
  font-weight: 700;
  cursor: pointer;
  font-family: inherit;
  transition: var(--transition);
  color: var(--primary);
}

.nikud-pick-btn:hover {
  background: var(--primary-light);
  color: white;
  transform: translateY(-2px);
}

.nikud-pick-btn.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.nikud-syllable {
  font-size: 2rem;
  font-weight: 700;
  color: var(--orange);
  margin-top: 6px;
}

/* ===== WORDS SECTION ===== */
.category-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.cat-btn {
  padding: 8px 16px;
  border: 2px solid var(--accent);
  background: white;
  color: var(--text);
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

.cat-btn:hover, .cat-btn.active {
  background: var(--accent);
  color: var(--text);
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(255, 217, 61, 0.4);
}

.words-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
}

.word-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
  cursor: pointer;
  border: 3px solid transparent;
  position: relative;
  overflow: hidden;
}

.word-card:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: var(--shadow-hover);
  border-color: var(--accent);
}

.word-card.flipped {
  border-color: var(--green);
  background: linear-gradient(135deg, #f0fff4, #e8f5e9);
}

.word-emoji {
  font-size: 3rem;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 3.5rem;
}

.word-emoji img, .quiz-option img, .mem-emoji img, .match-item img {
  display: inline-block;
  vertical-align: middle;
}

.word-hebrew {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--primary);
}

.word-translit {
  font-size: 1rem;
  color: var(--orange);
  font-weight: 600;
  margin-top: 4px;
  direction: ltr;
}

.word-tigrinya {
  font-size: 1.1rem;
  color: var(--secondary);
  font-weight: 600;
  margin-top: 4px;
}

.word-back {
  display: none;
}

.word-card.flipped .word-back {
  display: block;
  animation: fadeIn 0.3s ease;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 2px dashed var(--green);
}

.word-back-label {
  font-size: 0.75rem;
  color: var(--text-light);
  font-weight: 500;
}

.word-back-value {
  font-size: 1.1rem;
  font-weight: 700;
}

/* ===== MATCHING GAME ===== */
.game-controls {
  text-align: center;
  margin-bottom: 20px;
}

.game-btn {
  padding: 12px 28px;
  border: none;
  border-radius: 25px;
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
  margin: 4px;
}

.game-btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: white;
  box-shadow: var(--shadow);
}

.game-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.game-btn-secondary {
  background: linear-gradient(135deg, var(--green), var(--green-dark));
  color: white;
}

.game-btn-secondary:hover {
  transform: translateY(-2px);
}

.game-score {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--primary);
  margin: 12px 0;
}

.game-score span {
  color: var(--secondary);
}

.match-container {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  max-width: 900px;
  margin: 0 auto;
}

.match-column {
  flex: 1;
  min-width: 200px;
  max-width: 350px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.match-column-title {
  text-align: center;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
  padding: 8px;
  background: white;
  border-radius: var(--radius-sm);
}

.match-item {
  padding: 14px 18px;
  background: white;
  border-radius: var(--radius-sm);
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  border: 3px solid #e8e8ff;
  font-size: 1.2rem;
  font-weight: 600;
  user-select: none;
}

.match-item:hover:not(.matched):not(.disabled) {
  border-color: var(--primary);
  transform: scale(1.03);
  box-shadow: var(--shadow);
}

.match-item.selected {
  border-color: var(--primary);
  background: #f0f0ff;
  box-shadow: var(--shadow);
  transform: scale(1.05);
}

.match-item.matched {
  border-color: var(--green);
  background: linear-gradient(135deg, #e8f5e9, #c8e6c9);
  opacity: 0.7;
  cursor: default;
  transform: scale(0.95);
}

.match-item.wrong {
  border-color: var(--secondary);
  background: #ffe0e0;
  animation: shake 0.5s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-8px); }
  75% { transform: translateX(8px); }
}

.match-item.disabled {
  opacity: 0.5;
  cursor: default;
}

.match-hebrew {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--primary);
}

.match-translit {
  font-size: 0.8rem;
  color: var(--orange);
  font-weight: 600;
  margin-top: 2px;
  direction: ltr;
}

.quiz-translit {
  font-size: 1.1rem;
  color: var(--orange);
  font-weight: 600;
  margin-bottom: 16px;
  direction: ltr;
}

/* ===== MEMORY GAME ===== */
.memory-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 12px;
  max-width: 700px;
  margin: 0 auto;
}

.memory-card {
  aspect-ratio: 1;
  perspective: 800px;
  cursor: pointer;
}

.memory-card-inner {
  width: 100%;
  height: 100%;
  position: relative;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  transform-style: preserve-3d;
  border-radius: var(--radius);
}

.memory-card.flipped .memory-card-inner {
  transform: rotateY(180deg);
}

.memory-card-front, .memory-card-back {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 10px;
  box-shadow: var(--shadow);
}

.memory-card-front {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: white;
  font-size: 2.5rem;
}

.memory-card-back {
  background: white;
  transform: rotateY(180deg);
  border: 3px solid var(--primary-light);
}

.memory-card.matched .memory-card-back {
  border-color: var(--green);
  background: linear-gradient(135deg, #e8f5e9, #f0fff0);
}

.memory-card-back .mem-emoji {
  font-size: 2rem;
}

.memory-card-back .mem-text {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary);
  margin-top: 4px;
  text-align: center;
}

.memory-card-back .mem-sub {
  font-size: 0.8rem;
}

.mem-sub-ti { color: var(--secondary); font-weight: 600; }
.mem-sub-tr { color: var(--orange);    font-weight: 600; }

/* ===== STORY PICKER ===== */
#story-picker {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.story-pick-card {
  background: white;
  border-radius: var(--radius);
  padding: 18px 22px;
  text-align: center;
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: var(--transition);
  border: 3px solid transparent;
  min-width: 160px;
}

.story-pick-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary-light);
}

.story-pick-card.active {
  border-color: var(--primary);
  background: linear-gradient(135deg, #f0f0ff, #e8ecff);
}

.story-pick-cover {
  font-size: 2.5rem;
  margin-bottom: 6px;
}

.story-pick-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--primary);
}

.story-pick-tigrinya {
  font-size: 0.9rem;
  color: var(--secondary);
  font-weight: 600;
}

.story-pick-pages {
  font-size: 0.75rem;
  color: var(--text-light);
  margin-top: 4px;
}

/* ===== STORY BOOK ===== */
.story-book {
  max-width: 700px;
  margin: 0 auto;
  animation: fadeIn 0.4s ease;
}

.story-header {
  text-align: center;
  margin-bottom: 10px;
}

.story-header-title {
  font-size: 1rem;
  color: var(--text-light);
  font-weight: 600;
}

.story-cover-page {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: var(--radius);
  padding: 50px 30px;
  text-align: center;
  color: white;
  box-shadow: var(--shadow-hover);
  margin-bottom: 16px;
}

.story-cover-emoji {
  font-size: 5rem;
  margin-bottom: 16px;
}

.story-cover-title {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.story-cover-tigrinya {
  font-size: 1.4rem;
  opacity: 0.9;
  font-weight: 600;
}

.story-cover-translit {
  font-size: 1rem;
  opacity: 0.7;
  margin-top: 4px;
  direction: ltr;
}

.story-page {
  background: white;
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: var(--shadow);
  text-align: center;
  min-height: 250px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.story-emoji {
  font-size: 3.5rem;
  margin-bottom: 20px;
  letter-spacing: 4px;
}

.story-page-image {
  max-width: 100%;
  max-height: 320px;
  width: auto;
  height: auto;
  border-radius: 12px;
  display: block;
  margin: 0 auto 20px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

.story-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.story-page-num {
  padding: 8px 14px;
  color: var(--text-light);
  font-weight: 600;
  font-size: 0.95rem;
}

/* ===== READING ELEMENTS (shared) ===== */
.reading-emoji {
  font-size: 3rem;
  margin-bottom: 12px;
}

.reading-sentence {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 16px;
  direction: rtl;
}

.reading-word {
  padding: 8px 14px;
  background: #f8f7ff;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
  position: relative;
}

.reading-word:hover {
  background: #ede8ff;
  border-color: var(--primary-light);
  transform: translateY(-2px);
}

.reading-word .rw-hebrew {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--primary);
}

.reading-word .rw-tigrinya {
  font-size: 0.85rem;
  color: var(--secondary);
  font-weight: 600;
  margin-top: 3px;
}

.reading-word .rw-translit {
  font-size: 0.8rem;
  color: var(--orange);
  font-weight: 600;
  margin-top: 1px;
  direction: ltr;
}

.reading-word .rw-tooltip {
  display: none;
  position: absolute;
  bottom: 110%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: white;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  font-size: 0.85rem;
  z-index: 10;
  box-shadow: var(--shadow);
}

.reading-word .rw-tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: var(--primary);
}

.reading-word:hover .rw-tooltip {
  display: block;
  animation: fadeIn 0.2s ease;
}

.reading-translation {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 2px dashed #e8e8ff;
}

.reading-translation.hidden {
  display: none;
}

.reading-translit {
  font-size: 1.1rem;
  color: var(--orange);
  font-weight: 600;
  margin-bottom: 6px;
  direction: ltr;
}

.reading-tigrinya-text {
  font-size: 1.2rem;
  color: var(--secondary);
  font-weight: 600;
}

.reading-nav {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 16px;
}

.reading-nav-btn {
  padding: 10px 20px;
  border: 2px solid var(--primary);
  background: white;
  color: var(--primary);
  border-radius: 20px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

.reading-nav-btn:hover {
  background: var(--primary);
  color: white;
}

.toggle-btn {
  padding: 10px 20px;
  border: 2px solid var(--secondary);
  background: white;
  color: var(--secondary);
  border-radius: 20px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
  margin-top: 12px;
}

.toggle-btn:hover, .toggle-btn.active {
  background: var(--secondary);
  color: white;
}

/* ===== QUIZ SECTION ===== */
.quiz-start {
  background: white;
  border-radius: var(--radius);
  padding: 40px 30px;
  text-align: center;
  box-shadow: var(--shadow);
  max-width: 500px;
  margin: 0 auto;
}

.quiz-start-emoji {
  font-size: 3rem;
  margin-bottom: 12px;
}

.quiz-start h3 {
  font-size: 1.3rem;
  margin-bottom: 8px;
}

.quiz-card {
  background: white;
  border-radius: var(--radius);
  padding: 30px;
  max-width: 600px;
  margin: 0 auto;
  box-shadow: var(--shadow);
  text-align: center;
}

.quiz-question {
  font-size: 1.2rem;
  color: var(--text-light);
  margin-bottom: 12px;
}

.quiz-word {
  font-size: 3rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 20px;
}

.quiz-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.quiz-option {
  padding: 16px;
  background: #f8f7ff;
  border: 3px solid #e8e8ff;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  font-size: 2rem;
  font-family: inherit;
}

.quiz-option:hover:not(.disabled) {
  border-color: var(--primary);
  transform: scale(1.05);
  box-shadow: var(--shadow);
}

.quiz-option.correct {
  border-color: var(--green);
  background: #e8f5e9;
  animation: pulse 0.5s ease;
}

.quiz-option.wrong {
  border-color: var(--secondary);
  background: #ffe0e0;
  animation: shake 0.5s ease;
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.08); }
  100% { transform: scale(1); }
}

.quiz-progress {
  margin-top: 16px;
  font-size: 1rem;
  color: var(--text-light);
}

.quiz-progress-bar {
  height: 8px;
  background: #e8e8ff;
  border-radius: 4px;
  margin-top: 8px;
  overflow: hidden;
}

.quiz-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--green));
  border-radius: 4px;
  transition: width 0.5s ease;
}

/* ===== CELEBRATION ===== */
.celebration {
  display: none;
  text-align: center;
  padding: 30px;
  animation: fadeIn 0.5s ease;
}

.celebration.show {
  display: block;
}

.celebration-emoji {
  font-size: 4rem;
  animation: bounce 1s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-15px); }
}

.celebration h2 {
  font-size: 2rem;
  color: var(--primary);
  margin: 12px 0;
}

.celebration p {
  font-size: 1.1rem;
  color: var(--text-light);
}

/* ===== WELCOME SECTION ===== */
.welcome {
  text-align: center;
  padding: 40px 20px;
}

.welcome-hero {
  font-size: 4rem;
  margin-bottom: 16px;
}

.welcome h2 {
  font-size: 2rem;
  color: var(--primary);
  margin-bottom: 8px;
}

.welcome .welcome-tigrinya {
  font-size: 1.4rem;
  color: var(--secondary);
  margin-bottom: 24px;
}

.welcome-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  max-width: 900px;
  margin: 0 auto;
}

.welcome-card {
  background: white;
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: var(--transition);
  border: 3px solid transparent;
}

.welcome-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary-light);
}

.welcome-card-emoji {
  font-size: 2.5rem;
  margin-bottom: 10px;
}

.welcome-card h3 {
  font-size: 1.1rem;
  color: var(--primary);
  margin-bottom: 4px;
}

.welcome-card p {
  font-size: 0.85rem;
  color: var(--text-light);
}

/* ===== DIFFICULTY SELECTOR ===== */
.difficulty-selector {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 16px;
}

.diff-btn {
  padding: 6px 14px;
  border: 2px solid var(--sky);
  background: white;
  color: var(--text);
  border-radius: 15px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

.diff-btn:hover, .diff-btn.active {
  background: var(--sky);
  color: white;
}

/* ===== CONFETTI ===== */
.confetti-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1000;
  overflow: hidden;
}

.confetti {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 2px;
  animation: confettiFall 3s ease-in forwards;
}

@keyframes confettiFall {
  0% { transform: translateY(-10px) rotate(0deg); opacity: 1; }
  100% { transform: translateY(100vh) rotate(720deg); opacity: 0; }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .header h1 { font-size: 1.5rem; }
  .header .subtitle { font-size: 0.85rem; }
  .nav { gap: 6px; padding: 8px 12px; top: 0; }
  .nav-btn { padding: 8px 14px; font-size: 0.85rem; }
  .nav-audio-btn { padding: 8px 10px; font-size: 0.95rem; }
  .section { padding: 14px; }
  .letters-grid { grid-template-columns: repeat(auto-fill, minmax(100px, 1fr)); }
  .letter-hebrew { font-size: 2.5rem; }
  .words-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
  .match-container { flex-direction: column; align-items: center; }
  .match-column { max-width: 100%; width: 100%; }
  .memory-grid { grid-template-columns: repeat(3, 1fr); }
  .quiz-options { grid-template-columns: 1fr 1fr; }
  .reading-word .rw-hebrew { font-size: 1.3rem; }
  .welcome-hero { font-size: 3rem; }
}

@media (max-width: 480px) {
  .letters-grid { grid-template-columns: repeat(3, 1fr); }
  .words-grid { grid-template-columns: repeat(2, 1fr); }
  .memory-grid { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .quiz-options { gap: 8px; }
  .quiz-option { padding: 12px; font-size: 1.5rem; }
}

/* ===== LANGUAGE COLOR CLASSES ===== */
.lhe { color: var(--primary); font-weight: 700; }
.ltr { color: var(--orange); font-weight: 600; direction: ltr; font-style: italic; }
.lti { color: var(--secondary); font-weight: 600; }

.section-title .lhe, .section-title .ltr, .section-title .lti,
.section-subtitle .lhe, .section-subtitle .ltr, .section-subtitle .lti { display: block; }
.section-title .ltr { font-size: 0.52em; font-weight: 500; margin-top: 4px; }
.section-title .lti { font-size: 0.62em; margin-top: 2px; }
.section-subtitle .ltr { font-size: 0.9em; margin-top: 5px; }
.section-subtitle .lti { margin-top: 3px; }

.parent-banner .lhe, .parent-banner .ltr, .parent-banner .lti { display: block; }
.parent-banner .ltr { font-size: 0.85em; margin-top: 2px; }

.audio-top-btn {
  position: absolute;
  top: 50%;
  left: 14px;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.3);
  border: 2px solid rgba(255,255,255,0.6);
  border-radius: 50%;
  width: 38px;
  height: 38px;
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  z-index: 1;
}

.audio-top-btn:hover {
  background: rgba(255,255,255,0.5);
  transform: translateY(-50%) scale(1.1);
}

/* ===== COLOR LEGEND ===== */
.color-legend {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  background: white;
  border-radius: var(--radius);
  padding: 10px 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
  font-size: 0.95rem;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.legend-label {
  color: var(--text-light);
  font-size: 0.85rem;
}

/* ===== PRINT STYLES ===== */
@media print {
  .nav, .header { display: none; }
  .section { display: block !important; }
}

/* ===== PARENT GUIDE BANNER ===== */
.parent-banner {
  background: linear-gradient(135deg, var(--accent), var(--orange));
  padding: 12px 20px;
  text-align: center;
  position: relative;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  transition: var(--transition);
}

.parent-banner:hover {
  filter: brightness(1.05);
}

.parent-banner .banner-tigrinya {
  display: block;
  font-size: 0.85rem;
  margin-top: 2px;
  opacity: 0.9;
}

/* ===== SOUND HINT ===== */
.sound-hint {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.8rem;
  color: var(--text-light);
  margin-top: 4px;
}

/* ===== CATEGORY HEADER ===== */
.cat-header {
  text-align: center;
  margin-bottom: 16px;
}

.cat-header h3 {
  font-size: 1.4rem;
  color: var(--primary);
}

.cat-header .cat-tigrinya {
  font-size: 1rem;
  color: var(--secondary);
}