/* ============================================================
   Māori Explorer – style.css
   Mobile-first, child-friendly, warm playful design
   ============================================================ */

/* ── CSS Custom Properties ── */
:root {
  --color-bg:       #FFF8F0;
  --color-surface:  #FFFFFF;
  --color-primary:  #FF7043;
  --color-secondary:#42A5F5;
  --color-accent:   #FFC107;
  --color-success:  #66BB6A;
  --color-text:     #3E2723;
  --color-text-soft:#795548;
  --color-border:   #F5E6D3;
  --color-shadow:   rgba(0,0,0,0.10);

  --radius-sm:  0.5rem;
  --radius-md:  1rem;
  --radius-lg:  1.5rem;
  --radius-xl:  2rem;
  --radius-pill:9999px;

  --font-main: 'Nunito', 'Helvetica Rounded', Arial, sans-serif;

  --shadow-sm:  0 2px  8px var(--color-shadow);
  --shadow-md:  0 4px 16px var(--color-shadow);
  --shadow-lg:  0 8px 32px var(--color-shadow);

  --transition: 0.18s ease;
}

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

html { scroll-behavior: smooth; font-size: 18px; }

body {
  font-family: var(--font-main);
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-tap-highlight-color: transparent;
}

img { max-width: 100%; display: block; }

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

button {
  font-family: var(--font-main);
  cursor: pointer;
  border: none;
  outline: none;
}

button:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
}

h1, h2, h3 { line-height: 1.2; }

/* ── Utility ── */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.hidden { display: none !important; }
.flex  { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-sm { gap: 0.5rem; }
.gap-md { gap: 1rem; }
.text-center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }

/* ── Skip Link ── */
.skip-link {
  position: absolute; top: -999px; left: 0;
  background: var(--color-primary); color: #fff;
  padding: 0.5rem 1rem; font-size: 1rem; border-radius: var(--radius-sm);
  z-index: 9999;
}
.skip-link:focus { top: 0.5rem; left: 0.5rem; }

/* ============================================================
   HEADER
   ============================================================ */
.app-header {
  background: linear-gradient(135deg, #FF7043 0%, #FF8A65 60%, #FFAB40 100%);
  color: #fff;
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: 100;
}

.app-header .logo-emoji { font-size: 2rem; line-height: 1; }

.app-header .title-block { flex: 1; }
.app-header h1 {
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}
.app-header .tagline {
  font-size: 0.72rem;
  opacity: 0.88;
  font-weight: 600;
}

.btn-home {
  background: rgba(255,255,255,0.25);
  color: #fff;
  border-radius: var(--radius-pill);
  padding: 0.45rem 1rem;
  font-size: 0.85rem;
  font-weight: 700;
  transition: background var(--transition);
}
.btn-home:hover { background: rgba(255,255,255,0.4); }

/* ── Stars counter in header ── */
.header-stars {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  background: rgba(255,255,255,0.25);
  padding: 0.35rem 0.7rem;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  font-weight: 800;
  color: #fff;
}

/* ============================================================
   VIEWS / ROUTING
   ============================================================ */
.view { display: none; }
.view.active { display: block; }

/* ============================================================
   HOME VIEW
   ============================================================ */
.hero {
  background: linear-gradient(160deg, #FFF8F0 0%, #FFE0CC 100%);
  padding: 2rem 1.25rem 1.5rem;
  text-align: center;
}

.hero-mascot { font-size: 4rem; margin-bottom: 0.75rem; display: block; }

.hero h2 {
  font-size: 1.9rem;
  font-weight: 900;
  color: var(--color-primary);
  margin-bottom: 0.4rem;
}

.hero .subtitle {
  font-size: 1rem;
  color: var(--color-text-soft);
  font-weight: 700;
  max-width: 28rem;
  margin: 0 auto 1.25rem;
}

/* Word of the day */
.wotd-card {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: 1rem 1.25rem;
  margin: 0 auto;
  max-width: 24rem;
  box-shadow: var(--shadow-md);
  border: 2px solid var(--color-border);
}
.wotd-label {
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-soft);
  margin-bottom: 0.3rem;
}
.wotd-emoji { font-size: 2.4rem; margin: 0.25rem 0; }
.wotd-word {
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--color-primary);
}
.wotd-pron {
  font-size: 0.78rem;
  color: var(--color-text-soft);
  font-style: italic;
  margin: 0.15rem 0;
}
.wotd-english {
  font-size: 0.9rem;
  color: var(--color-text);
  font-weight: 700;
}

/* Module grid */
.module-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem;
  padding: 1.5rem 1rem;
  max-width: 52rem;
  margin: 0 auto;
}

@media (min-width: 640px) {
  .module-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 900px) {
  .module-grid { grid-template-columns: repeat(4, 1fr); }
}

.module-card {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: 1.25rem 0.75rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 2px solid var(--color-border);
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
  -webkit-user-select: none;
  user-select: none;
}

.module-card:hover,
.module-card:focus-visible {
  transform: translateY(-3px) scale(1.03);
  box-shadow: var(--shadow-md);
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

.module-card:active { transform: scale(0.97); }

.module-icon { font-size: 2.6rem; margin-bottom: 0.4rem; display: block; }
.module-label {
  font-size: 1rem;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 0.2rem;
}
.module-desc {
  font-size: 0.72rem;
  color: var(--color-text-soft);
  font-weight: 600;
}

/* ============================================================
   PARENT CORNER
   ============================================================ */
.parent-corner {
  background: #F0F7FF;
  border-top: 2px solid #BBDEFB;
  padding: 1.5rem 1.25rem;
  max-width: 52rem;
  margin: 0 auto;
}

.parent-corner summary {
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--color-secondary);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.parent-corner summary::before { content: "👪 "; }

.parent-corner .parent-content {
  margin-top: 0.9rem;
  font-size: 0.82rem;
  color: var(--color-text-soft);
  line-height: 1.7;
}
.parent-corner ul {
  margin-top: 0.5rem;
  padding-left: 1.4rem;
  list-style: disc;
}
.parent-corner ul li { margin-bottom: 0.25rem; }

/* ── Progress bar ── */
.progress-section {
  padding: 1rem 1.25rem 0.5rem;
  max-width: 52rem;
  margin: 0 auto;
}
.progress-label {
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--color-text-soft);
  margin-bottom: 0.3rem;
}
.progress-bar-outer {
  background: #EEE;
  border-radius: var(--radius-pill);
  height: 10px;
  overflow: hidden;
}
.progress-bar-inner {
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  height: 100%;
  border-radius: var(--radius-pill);
  transition: width 0.5s ease;
}
.progress-stats {
  display: flex;
  gap: 1.25rem;
  margin-top: 0.75rem;
  flex-wrap: wrap;
}
.stat-chip {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-pill);
  padding: 0.3rem 0.85rem;
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--color-text-soft);
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

/* ============================================================
   FOOTER
   ============================================================ */
.app-footer {
  background: var(--color-surface);
  border-top: 2px solid var(--color-border);
  padding: 1.25rem 1.25rem 2rem;
  text-align: center;
  font-size: 0.78rem;
  color: var(--color-text-soft);
  max-width: 52rem;
  margin: 0 auto;
}

.feedback-section {
  margin-top: 0.75rem;
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.feedback-link {
  background: transparent;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-pill);
  padding: 0.4rem 0.9rem;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-text-soft);
  text-decoration: none;
  transition: background var(--transition), color var(--transition);
}
.feedback-link:hover {
  background: var(--color-primary);
  color: #fff;
  text-decoration: none;
  border-color: var(--color-primary);
}

/* ============================================================
   MODULE VIEW (Vocabulary cards)
   ============================================================ */
.module-header {
  background: linear-gradient(135deg, #FF8A65, #FFAB40);
  color: #fff;
  padding: 1.25rem 1.25rem 1rem;
  text-align: center;
}
.module-header .module-big-emoji { font-size: 3rem; margin-bottom: 0.3rem; }
.module-header h2 { font-size: 1.5rem; font-weight: 900; }
.module-header p { font-size: 0.82rem; opacity: 0.9; font-weight: 600; }

.vocab-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem;
  padding: 1.25rem 1rem;
  max-width: 52rem;
  margin: 0 auto;
}
@media (min-width: 600px) { .vocab-grid { grid-template-columns: repeat(3, 1fr); } }

/* Vocabulary card */
.vocab-card {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: 1rem 0.75rem 0.75rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 2.5px solid var(--color-border);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  transition: transform var(--transition), box-shadow var(--transition);
}
.vocab-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }

.vocab-emoji { font-size: 2.8rem; line-height: 1; margin-bottom: 0.25rem; }
.vocab-maori {
  font-size: 1.3rem;
  font-weight: 900;
  color: var(--color-primary);
  line-height: 1.2;
}
.vocab-pron {
  font-size: 0.7rem;
  color: var(--color-text-soft);
  font-style: italic;
}
.vocab-english {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-text-soft);
}
.vocab-color-swatch {
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  border: 3px solid rgba(0,0,0,0.1);
  margin: 0.25rem auto;
}

/* ── Audio / Say-it buttons ── */
.btn-audio {
  background: var(--color-secondary);
  color: #fff;
  border-radius: var(--radius-pill);
  padding: 0.5rem 1.1rem;
  font-size: 0.8rem;
  font-weight: 800;
  margin-top: 0.4rem;
  display: flex;
  align-items: center;
  gap: 0.3rem;
  transition: background var(--transition), transform var(--transition);
  width: 100%;
  justify-content: center;
}
.btn-audio:hover  { background: #1E88E5; }
.btn-audio:active { transform: scale(0.95); }
.btn-audio.playing {
  background: var(--color-success);
  animation: pulse 0.6s ease infinite alternate;
}

@keyframes pulse {
  from { transform: scale(1); }
  to   { transform: scale(1.05); }
}

.btn-say-it {
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-pill);
  padding: 0.5rem 1.1rem;
  font-size: 0.8rem;
  font-weight: 800;
  margin-top: 0.25rem;
  width: 100%;
  transition: background var(--transition), transform var(--transition);
}
.btn-say-it:hover  { background: #E64A19; }
.btn-say-it:active { transform: scale(0.95); }

/* Module action bar */
.module-actions {
  display: flex;
  gap: 0.75rem;
  padding: 0 1rem 1.5rem;
  max-width: 52rem;
  margin: 0 auto;
  flex-wrap: wrap;
}
.btn-game {
  flex: 1;
  min-width: 140px;
  background: var(--color-accent);
  color: var(--color-text);
  border-radius: var(--radius-xl);
  padding: 0.9rem 1rem;
  font-size: 0.88rem;
  font-weight: 800;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}
.btn-game:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-game:active { transform: scale(0.97); }

/* ============================================================
   MINI GAMES VIEW
   ============================================================ */
.games-header {
  background: linear-gradient(135deg, #7E57C2, #AB47BC);
  color: #fff;
  padding: 1.25rem 1.25rem 1rem;
  text-align: center;
}
.games-header .games-big-emoji { font-size: 3rem; margin-bottom: 0.3rem; }
.games-header h2 { font-size: 1.5rem; font-weight: 900; }
.games-header p { font-size: 0.82rem; opacity: 0.9; font-weight: 600; }

.games-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem;
  padding: 1.25rem 1rem;
  max-width: 48rem;
  margin: 0 auto;
}
@media (min-width: 600px) { .games-grid { grid-template-columns: repeat(2, 1fr); } }

.game-card {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: 1.25rem 0.75rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 2.5px solid var(--color-border);
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
}
.game-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.game-icon { font-size: 2.8rem; margin-bottom: 0.4rem; display: block; }
.game-label { font-size: 1rem; font-weight: 800; color: var(--color-text); }
.game-desc { font-size: 0.75rem; color: var(--color-text-soft); font-weight: 600; margin-top: 0.2rem; }

/* ============================================================
   GAME PLAY AREA
   ============================================================ */
.game-play-area {
  padding: 1rem;
  max-width: 48rem;
  margin: 0 auto;
}

.game-play-header {
  text-align: center;
  margin-bottom: 1rem;
}
.game-play-header h2 { font-size: 1.3rem; font-weight: 900; color: var(--color-primary); }

.game-prompt {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: 1.25rem;
  text-align: center;
  margin-bottom: 1rem;
  box-shadow: var(--shadow-sm);
  border: 2px solid var(--color-border);
}
.game-prompt .prompt-emoji { font-size: 3rem; display: block; margin-bottom: 0.4rem; }
.game-prompt .prompt-text {
  font-size: 1.2rem;
  font-weight: 900;
  color: var(--color-primary);
  margin-bottom: 0.25rem;
}
.game-prompt .prompt-instruction {
  font-size: 0.85rem;
  color: var(--color-text-soft);
  font-weight: 600;
}

/* Answer options grid */
.options-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.option-btn {
  background: var(--color-surface);
  border: 3px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 1rem 0.5rem;
  font-size: 1rem;
  font-weight: 800;
  color: var(--color-text);
  text-align: center;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  transition: transform var(--transition), border-color var(--transition), background var(--transition);
  min-height: 80px;
}
.option-btn:hover { border-color: var(--color-secondary); transform: scale(1.03); }
.option-btn.correct {
  background: #E8F5E9;
  border-color: var(--color-success);
  color: var(--color-success);
}
.option-btn.wrong {
  background: #FFEBEE;
  border-color: #EF5350;
  color: #EF5350;
}
.option-btn .opt-emoji { font-size: 1.8rem; }
.option-btn .opt-text { font-size: 0.9rem; }

/* Feedback banner */
.feedback-banner {
  border-radius: var(--radius-xl);
  padding: 1rem 1.25rem;
  text-align: center;
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 1rem;
  animation: fadeIn 0.3s ease;
}
.feedback-banner.positive {
  background: #E8F5E9;
  color: #2E7D32;
  border: 2px solid #A5D6A7;
}
.feedback-banner.negative {
  background: #FFF8E1;
  color: #F57F17;
  border: 2px solid #FFE082;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Game score area */
.game-score {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 0.75rem;
}
.score-item {
  text-align: center;
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--color-text-soft);
}
.score-item .score-value {
  display: block;
  font-size: 1.5rem;
  color: var(--color-primary);
  font-weight: 900;
}

/* Control buttons */
.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-pill);
  padding: 0.85rem 2rem;
  font-size: 1rem;
  font-weight: 800;
  box-shadow: var(--shadow-sm);
  transition: background var(--transition), transform var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.btn-primary:hover  { background: #E64A19; }
.btn-primary:active { transform: scale(0.97); }

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text-soft);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-pill);
  padding: 0.7rem 1.5rem;
  font-size: 0.9rem;
  font-weight: 700;
  transition: background var(--transition);
}
.btn-secondary:hover { background: var(--color-border); }

.btn-row {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 0.75rem;
}

/* ── Match Cards game ── */
.match-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.6rem;
  margin-bottom: 1rem;
}
@media (max-width: 480px) { .match-grid { grid-template-columns: repeat(3, 1fr); } }

.match-card {
  background: var(--color-secondary);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 0.75rem 0.3rem;
  text-align: center;
  font-weight: 800;
  font-size: 0.85rem;
  cursor: pointer;
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), background var(--transition);
  border: 3px solid transparent;
}
.match-card:hover { transform: scale(1.05); }
.match-card.selected {
  border-color: var(--color-accent);
  background: #1565C0;
}
.match-card.matched {
  background: var(--color-success);
  cursor: default;
  transform: none;
}
.match-card.wrong-flash {
  background: #EF5350;
  animation: shake 0.4s ease;
}
.match-card.numeral {
  font-size: 1.4rem;
  background: #FF7043;
}
.match-card.numeral.matched { background: var(--color-success); }

@keyframes shake {
  0%,100% { transform: translateX(0); }
  25%      { transform: translateX(-6px); }
  75%      { transform: translateX(6px); }
}

/* ── Count Objects game ── */
.count-objects {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  font-size: 2.4rem;
  padding: 1rem;
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  border: 2px solid var(--color-border);
  min-height: 110px;
  align-items: center;
  margin-bottom: 1rem;
}

/* ============================================================
   REWARDS VIEW
   ============================================================ */
.rewards-header {
  background: linear-gradient(135deg, #FFA726, #FFD54F);
  padding: 1.25rem 1.25rem 1rem;
  text-align: center;
}
.rewards-header h2 { font-size: 1.5rem; font-weight: 900; }
.rewards-header p { font-size: 0.82rem; opacity: 0.9; font-weight: 600; }

.rewards-section {
  padding: 1.25rem 1rem;
  max-width: 48rem;
  margin: 0 auto;
}

.rewards-section h3 {
  font-size: 1rem;
  font-weight: 800;
  color: var(--color-text-soft);
  margin-bottom: 0.75rem;
  padding-left: 0.25rem;
}

.star-count-display {
  text-align: center;
  margin-bottom: 1.5rem;
}
.star-big { font-size: 4rem; }
.star-number {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--color-accent);
}
.star-label { font-size: 0.82rem; color: var(--color-text-soft); font-weight: 700; }

.badges-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}
@media (min-width: 480px) { .badges-grid { grid-template-columns: repeat(3, 1fr); } }

.badge-item {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: 1rem 0.5rem;
  text-align: center;
  border: 2.5px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  opacity: 0.35;
  filter: grayscale(100%);
  transition: opacity 0.3s, filter 0.3s;
}
.badge-item.earned {
  opacity: 1;
  filter: none;
  border-color: var(--color-accent);
}
.badge-emoji { font-size: 2.4rem; margin-bottom: 0.3rem; }
.badge-label { font-size: 0.78rem; font-weight: 800; color: var(--color-text); }
.badge-desc  { font-size: 0.65rem; color: var(--color-text-soft); margin-top: 0.15rem; }

/* Module progress bars */
.module-progress-list { margin-bottom: 1.5rem; }
.mod-prog-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.6rem;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-text-soft);
}
.mod-prog-item .mod-emoji { font-size: 1.1rem; min-width: 1.5rem; }
.mod-prog-item .mod-name { min-width: 80px; }
.mod-prog-outer { flex: 1; background: #EEE; border-radius: var(--radius-pill); height: 10px; overflow: hidden; }
.mod-prog-inner {
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  height: 100%;
  border-radius: var(--radius-pill);
  transition: width 0.5s ease;
}
.mod-prog-pct { min-width: 32px; text-align: right; }

.btn-reset-progress {
  background: transparent;
  border: 2px solid #FFCDD2;
  color: #E53935;
  border-radius: var(--radius-pill);
  padding: 0.55rem 1.25rem;
  font-size: 0.8rem;
  font-weight: 700;
  transition: background var(--transition);
  display: block;
  margin: 0 auto;
}
.btn-reset-progress:hover { background: #FFEBEE; }

/* ============================================================
   REWARD POPUP
   ============================================================ */
.reward-popup-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  animation: fadeIn 0.25s ease;
}
.reward-popup {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: 2rem 1.5rem;
  text-align: center;
  max-width: 22rem;
  width: 100%;
  box-shadow: var(--shadow-lg);
  border: 3px solid var(--color-accent);
  animation: popIn 0.35s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}
@keyframes popIn {
  from { transform: scale(0.6); opacity: 0; }
  to   { transform: scale(1);   opacity: 1; }
}
.reward-popup-emoji { font-size: 4rem; display: block; margin-bottom: 0.5rem; }
.reward-popup h3 { font-size: 1.4rem; font-weight: 900; color: var(--color-accent); margin-bottom: 0.4rem; }
.reward-popup p { font-size: 0.9rem; color: var(--color-text-soft); margin-bottom: 1rem; }

/* ============================================================
   CONFETTI CANVAS
   ============================================================ */
#confetti-canvas {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 400;
}

/* ============================================================
   AD BAR (fixed bottom strip; hidden by default, shown on non-home views)
   Ad content is injected by initAdsense() in script.js using
   settings from ADSENSE_CONFIG in data.js.
   ============================================================ */
.ad-bar {
  /* Hidden until JS adds "visible" */
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background: #F5F5F5;
  border-top: 1px solid #BDBDBD;
  padding: 0.25rem 0;
  text-align: center;
}
.ad-bar.visible { display: block; }

/* Prevent content from hiding under the fixed ad bar when visible */
body.ad-visible { padding-bottom: 90px; }

/* ============================================================
   LOADING / TRANSITIONS
   ============================================================ */
.fade-enter {
  animation: fadeIn 0.25s ease both;
}

/* ============================================================
   RESPONSIVE TWEAKS
   ============================================================ */
@media (min-width: 768px) {
  html { font-size: 19px; }
  .hero h2 { font-size: 2.2rem; }
  .vocab-grid { padding: 1.5rem 1.5rem; }
}

@media (max-width: 360px) {
  html { font-size: 16px; }
  .module-grid { grid-template-columns: 1fr 1fr; gap: 0.6rem; padding: 1rem 0.75rem; }
  .vocab-grid  { grid-template-columns: 1fr 1fr; }
}

/* ── Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ── Dark mode minimal support ── */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg:       #1A1A2E;
    --color-surface:  #16213E;
    --color-text:     #F0E6D3;
    --color-text-soft:#B0A090;
    --color-border:   #2E2E4E;
  }
  .app-footer { background: #16213E; }
}