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

:root {
  --bg: #fdf8f0;
  --bg2: #f5ede0;
  --surface: #ffffff;
  --surface2: #fef3e2;
  --border: #e8d5b7;
  --accent: #c2622a;
  --accent-light: #e8956d;
  --accent-bg: #fdf0e8;
  --vowel: #c0392b;
  --consonant: #1a3a6b;
  --silent: #b0a090;
  --text: #2c1810;
  --text-muted: #8b6f5e;
  --success: #2d7a3a;
  --error: #c0392b;
  --radius: 16px;
  --font: 'Nunito', sans-serif;
  --font-letters: 'Georgia', 'Times New Roman', serif;
}

body {
  font-family: var(--font);
  background: var(--bg);
  background-image:
    radial-gradient(ellipse at 20% 10%, rgba(194,98,42,0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 90%, rgba(194,98,42,0.04) 0%, transparent 50%);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ── HOME ── */
.home {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
  padding: 2rem 1.5rem 3rem;
}

.home-header {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.mama-btn {
  background: var(--surface);
  border: 1.5px solid var(--border);
  color: var(--accent);
  font-size: 0.95rem;
  font-weight: 800;
  padding: 0.5rem 1.1rem;
  border-radius: 50px;
  cursor: pointer;
  font-family: var(--font);
  text-decoration: none;
  box-shadow: 0 2px 8px rgba(194,98,42,0.1);
}

.stars-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--accent);
  font-size: 1.1rem;
  font-weight: 700;
  padding: 0.5rem 1.1rem;
  border-radius: 50px;
  cursor: pointer;
  font-family: var(--font);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  box-shadow: 0 2px 8px rgba(194,98,42,0.1);
}

.home-hero {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  width: 100%;
  max-width: 700px;
  margin-bottom: 0.9rem;
}

.hero-text {
  flex: 1;
  text-align: left;
}

.mama-card {
  border-style: dashed;
  opacity: 0.75;
}

.mama-card .level-name {
  color: #b07a9e;
}

.mama-card .level-desc {
  font-style: italic;
}

.home-character {
  width: min(300px, 45vw);
  height: min(300px, 45vw);
  object-fit: contain;
  flex-shrink: 0;
  filter: drop-shadow(0 6px 20px rgba(194,98,42,0.2));
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.home-title {
  font-size: clamp(2rem, 8vw, 3.2rem);
  font-weight: 900;
  text-align: center;
  margin-bottom: 0.5rem;
  color: var(--accent);
  letter-spacing: -0.01em;
}

.home-subtitle {
  color: var(--text-muted);
  font-size: 1.1rem;
  text-align: center;
  margin-bottom: 3rem;
  font-style: italic;
}

.levels-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  width: 100%;
  max-width: 700px;
}

@media (max-width: 480px) {
  .home-hero {
    flex-direction: column;
    gap: 1rem;
  }
  .home-character {
    width: min(220px, 60vw);
    height: min(220px, 60vw);
  }
  .levels-grid {
    grid-template-columns: 1fr;
  }
}

.level-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1.4rem 1.5rem;
  text-decoration: none;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 1.2rem;
  border: 1.5px solid var(--border);
  box-shadow: 0 2px 12px rgba(44,24,16,0.07);
  transition: box-shadow 0.2s, transform 0.15s, border-color 0.2s;
  -webkit-tap-highlight-color: transparent;
}

.level-card:active { transform: scale(0.97); }
.level-card:hover {
  border-color: var(--accent-light);
  box-shadow: 0 4px 20px rgba(194,98,42,0.15);
}

.level-icon {
  font-size: 2rem;
  width: 52px;
  height: 52px;
  background: var(--bg2);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 1px solid var(--border);
}

.level-name {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--consonant);
}

.level-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

/* ── EXERCISE ── */
.exercise {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
  padding: 1.5rem 1.5rem 3rem;
}

.exercise-header {
  width: 100%;
  max-width: 480px;
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
}

.back-btn {
  background: var(--surface);
  border: 1.5px solid var(--border);
  color: var(--text-muted);
  font-size: 1.2rem;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 1px 4px rgba(44,24,16,0.08);
}

.progress-bar-wrap {
  flex: 1;
  height: 8px;
  background: var(--bg2);
  border-radius: 99px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  border-radius: 99px;
  transition: width 0.3s ease;
}

/* ── TAP TO HEAR ── */
.tap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  width: 100%;
  max-width: 480px;
  margin-top: 1rem;
}

.tap-card {
  background: var(--surface);
  border-radius: var(--radius);
  aspect-ratio: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border: 2px solid var(--border);
  box-shadow: 0 2px 10px rgba(44,24,16,0.07);
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

.tap-card:active { transform: scale(0.92); }
.tap-card:hover { box-shadow: 0 4px 18px rgba(194,98,42,0.15); border-color: var(--accent-light); }
.tap-card.playing { border-color: var(--accent); background: var(--accent-bg); }

.tap-letter {
  font-size: clamp(2.5rem, 10vw, 4rem);
  font-weight: 900;
  font-family: var(--font-letters);
  line-height: 1;
}

.tap-letter.vowel { color: var(--vowel); }
.tap-letter.consonant { color: var(--consonant); }

.tap-gesture {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-align: center;
  padding: 0 0.5rem;
  margin-top: 0.5rem;
  line-height: 1.3;
}

/* ── SLIDE TO MERGE ── */
.slide-exercise {
  width: 100%;
  max-width: 480px;
  margin-top: 2rem;
}

.slide-display {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-bottom: 3rem;
}

.slide-consonant {
  font-size: clamp(3rem, 14vw, 5rem);
  font-weight: 900;
  font-family: var(--font-letters);
  color: var(--consonant);
}

.slide-line {
  flex: 1;
  height: 3px;
  background: var(--border);
  position: relative;
  max-width: 120px;
  margin: 0 0.5rem;
}

.slide-cursor {
  position: absolute;
  top: 50%;
  left: 0;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  background: var(--accent);
  border-radius: 50%;
  transition: left 0.05s;
  box-shadow: 0 2px 8px rgba(194,98,42,0.4);
}

.slide-vowel {
  font-size: clamp(3rem, 14vw, 5rem);
  font-weight: 900;
  font-family: var(--font-letters);
  color: var(--vowel);
}

.slide-result {
  text-align: center;
  font-size: clamp(3rem, 16vw, 6rem);
  font-weight: 900;
  font-family: var(--font-letters);
  color: var(--accent);
  margin-bottom: 2rem;
  min-height: 1.2em;
  opacity: 0;
  transition: opacity 0.3s;
}

.slide-result.visible { opacity: 1; }
.slide-result .consonant { color: var(--consonant); }
.slide-result .vowel { color: var(--vowel); }

.syllable-nav {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: center;
}

.syl-btn {
  background: var(--surface);
  border: 1.5px solid var(--border);
  color: var(--text-muted);
  font-size: 1.1rem;
  font-weight: 700;
  padding: 0.5rem 0.9rem;
  border-radius: 10px;
  cursor: pointer;
  font-family: var(--font);
  transition: border-color 0.15s, color 0.15s;
}

.syl-btn.done { border-color: var(--success); color: var(--success); background: #f0faf2; }
.syl-btn.current { border-color: var(--accent); color: var(--accent); background: var(--accent-bg); }

/* ── RAPID READ ── */
.rapid-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.6rem;
  width: 100%;
  max-width: 480px;
  margin-top: 1rem;
}

.rapid-cell {
  background: var(--surface);
  border-radius: 10px;
  padding: 0.8rem 0.3rem;
  text-align: center;
  font-size: clamp(1rem, 3.5vw, 1.3rem);
  font-weight: 700;
  font-family: var(--font-letters);
  cursor: pointer;
  border: 1.5px solid var(--border);
  box-shadow: 0 1px 4px rgba(44,24,16,0.06);
  transition: border-color 0.15s, transform 0.1s;
  -webkit-tap-highlight-color: transparent;
}

.rapid-cell:active { transform: scale(0.9); }
.rapid-cell.done { border-color: var(--success); background: #f0faf2; }
.rapid-cell .consonant { color: var(--consonant); }
.rapid-cell .vowel { color: var(--vowel); }

/* ── WORD TAP ── */
.word-display {
  font-size: clamp(3rem, 16vw, 6rem);
  font-weight: 900;
  font-family: var(--font-letters);
  text-align: center;
  margin: 2rem 0;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  letter-spacing: 0.05em;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 2rem;
  box-shadow: 0 3px 16px rgba(44,24,16,0.08);
  width: 100%;
  max-width: 480px;
}

.word-display .vowel { color: var(--vowel); }
.word-display .consonant { color: var(--consonant); }
.word-display .silent { color: var(--silent); }

.next-btn {
  background: var(--accent);
  border: none;
  color: white;
  font-size: 1.1rem;
  font-weight: 700;
  padding: 0.9rem 2.5rem;
  border-radius: 50px;
  cursor: pointer;
  font-family: var(--font);
  margin-top: 1.5rem;
  box-shadow: 0 3px 12px rgba(194,98,42,0.3);
  transition: transform 0.15s, opacity 0.15s;
}

.next-btn:active { transform: scale(0.96); }
.next-btn:disabled { opacity: 0.4; cursor: default; }

/* ── SENTENCE READ ── */
.sentence-display {
  font-size: clamp(1.5rem, 5.5vw, 2.2rem);
  font-weight: 700;
  font-family: var(--font-letters);
  text-align: center;
  line-height: 1.6;
  margin: 2rem 0 3rem;
  max-width: 480px;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  box-shadow: 0 3px 16px rgba(44,24,16,0.08);
  width: 100%;
}

.sentence-display .vowel { color: var(--vowel); }
.sentence-display .consonant { color: var(--consonant); }
.sentence-display .silent { color: var(--silent); }

.ilu-btn {
  background: var(--accent);
  border: none;
  color: white;
  font-size: 1.2rem;
  font-weight: 800;
  padding: 1rem 2.5rem;
  border-radius: 50px;
  cursor: pointer;
  font-family: var(--font);
  box-shadow: 0 3px 12px rgba(194,98,42,0.3);
  transition: transform 0.15s;
}

.ilu-btn:active { transform: scale(0.96); }
.ilu-btn:disabled { opacity: 0.4; cursor: default; }

.mic-btn {
  background: var(--surface);
  border: 2.5px solid var(--accent);
  color: var(--accent);
  font-size: 1.2rem;
  font-weight: 800;
  padding: 1rem 2.5rem;
  border-radius: 50px;
  cursor: pointer;
  font-family: var(--font);
  transition: all 0.2s;
}

.mic-btn:disabled { opacity: 0.35; cursor: default; }

.mic-btn.mic-on {
  background: #fee2e2;
  border-color: var(--error);
  color: var(--error);
  animation: pulse 1s infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(192,57,43,0.3); }
  50% { box-shadow: 0 0 0 10px rgba(192,57,43,0); }
}

/* ── REWARD ── */
.reward {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 2rem;
  background: var(--bg);
  background-image:
    radial-gradient(ellipse at center, rgba(194,98,42,0.08) 0%, transparent 70%);
}

.reward-character {
  width: min(260px, 65vw);
  height: min(260px, 65vw);
  object-fit: contain;
  margin-bottom: 2rem;
  filter: drop-shadow(0 8px 24px rgba(194,98,42,0.25));
}

.reward-phrase {
  font-size: clamp(1.3rem, 4.5vw, 1.9rem);
  font-weight: 800;
  font-family: var(--font-letters);
  text-align: center;
  color: var(--accent);
  max-width: 380px;
  line-height: 1.5;
  margin-bottom: 3rem;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 2rem;
  box-shadow: 0 4px 20px rgba(194,98,42,0.12);
}

.reward-continue {
  background: var(--surface);
  border: 2px solid var(--accent);
  color: var(--accent);
  font-size: 1.1rem;
  font-weight: 700;
  padding: 0.9rem 2.5rem;
  border-radius: 50px;
  cursor: pointer;
  font-family: var(--font);
  text-decoration: none;
  box-shadow: 0 2px 10px rgba(194,98,42,0.15);
}

/* Stars burst animation */
@keyframes burst {
  0% { opacity: 1; transform: translate(-50%, -50%) scale(0); }
  60% { opacity: 1; transform: translate(var(--tx), var(--ty)) scale(1); }
  100% { opacity: 0; transform: translate(var(--tx), var(--ty)) scale(0.5); }
}

.star-particle {
  position: fixed;
  font-size: 1.5rem;
  pointer-events: none;
  animation: burst 1.2s ease-out forwards;
  z-index: 100;
}