/* Thai Phrases — alphabet explorer page (loads after styles.css) */

/* ---------- controls ---------- */
.alpha-controls {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  margin: 1rem 0 0.4rem;
}
@media (min-width: 720px) {
  .alpha-controls { flex-direction: row; align-items: center; justify-content: space-between; }
}
.class-filters { display: flex; gap: 0.45rem; flex-wrap: wrap; }
.chip-filter[data-filter="mid"].is-active { background: #0e7c7b; border-color: #0e7c7b; }
.chip-filter[data-filter="high"].is-active { background: #c7431f; border-color: #c7431f; }
.chip-filter[data-filter="low"].is-active { background: #7a4fa3; border-color: #7a4fa3; }

.alpha-search { flex: 0 1 320px; }
.alpha-search input {
  width: 100%;
  min-height: 48px;
  border: 2px solid var(--line);
  border-radius: 999px;
  padding: 0.6rem 1rem;
  font-size: 1rem;
  background: #fff;
  color: var(--ink);
}
.alpha-search input:focus { outline: none; border-color: var(--accent); }
.alpha-count { color: var(--ink-soft); font-size: 0.95rem; margin: 0.2rem 0 0; }

/* ---------- consonant grid ---------- */
.class-group { margin-top: 1.6rem; scroll-margin-top: 84px; }
.class-group h3 {
  font-size: 1.2rem;
  margin: 0 0 0.2rem;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  flex-wrap: wrap;
}
.class-group .group-sub { color: var(--ink-soft); margin: 0 0 0.7rem; font-size: 0.95rem; }
.class-dot {
  width: 14px; height: 14px; border-radius: 50%;
  display: inline-block; flex: 0 0 auto;
}
.dot-mid { background: #0e7c7b; }
.dot-high { background: #e4572e; }
.dot-low { background: #7a4fa3; }

.letter-grid {
  display: grid;
  gap: 0.5rem;
  grid-template-columns: repeat(auto-fill, minmax(84px, 1fr));
}
.letter-cell {
  appearance: none;
  background: var(--card);
  border: 2px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 0.55rem 0.25rem 0.5rem;
  cursor: pointer;
  text-align: center;
  font-family: inherit;
  color: var(--ink);
  min-height: 84px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.1rem;
  transition: opacity 0.15s ease, border-color 0.15s ease, transform 0.1s ease;
}
.letter-cell:hover, .letter-cell:focus-visible { border-color: var(--accent); }
.letter-cell:active { transform: scale(0.97); }
.letter-cell .lc-letter { font-size: 1.9rem; font-weight: 800; line-height: 1.15; }
.letter-cell .lc-sound { font-size: 0.88rem; font-weight: 700; color: var(--accent-dark); }
.letter-cell .lc-obs {
  font-size: 0.68rem; font-weight: 700; letter-spacing: 0.04em;
  color: var(--ink-soft); text-transform: uppercase;
}
.letter-cell.is-selected { border-color: var(--accent); background: #fff6ef; box-shadow: 0 0 0 2px var(--accent) inset; }
.letter-cell.is-dimmed { opacity: 0.28; }
.letter-cell.is-hidden { display: none; }
.class-group.is-dimmed { opacity: 0.45; }

/* ---------- detail card ---------- */
.detail-card { margin-top: 1.6rem; }
.detail-top {
  display: flex;
  gap: 1.1rem;
  flex-wrap: wrap;
  align-items: flex-start;
}
.detail-letter {
  font-size: 5.2rem;
  font-weight: 800;
  line-height: 1;
  background: #f7f3ea;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.7rem 1.1rem 0.9rem;
  min-width: 128px;
  text-align: center;
}
.detail-head { flex: 1 1 260px; min-width: 240px; }
.detail-head h3 { margin: 0.1rem 0 0.15rem; font-size: 1.5rem; }
.detail-head h3 .detail-roman { color: var(--accent-dark); font-size: 1.15rem; font-weight: 700; }
.detail-meaning { margin: 0 0 0.55rem; color: var(--ink-soft); font-size: 1.05rem; }
.class-badge {
  display: inline-block;
  border-radius: 999px;
  padding: 0.28rem 0.8rem;
  font-weight: 700;
  font-size: 0.88rem;
  color: #fff;
}
.badge-mid { background: #0e7c7b; }
.badge-high { background: #c7431f; }
.badge-low { background: #7a4fa3; }
.detail-obsolete {
  margin: 0.6rem 0 0;
  background: #fff6e0;
  border: 1px solid #ecd28a;
  border-radius: 10px;
  padding: 0.55rem 0.8rem;
  font-size: 0.93rem;
}
.detail-actions { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-top: 0.8rem; }

.detail-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
  margin-top: 1.1rem;
  border-top: 1px solid var(--line);
  padding-top: 1rem;
}
@media (min-width: 720px) { .detail-grid { grid-template-columns: 1fr 1fr; } }
.detail-grid h4 {
  margin: 0 0 0.3rem;
  font-size: 0.92rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-soft);
}
.detail-grid p { margin: 0; }
.tone-outcomes { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.25rem; }
.tone-outcomes li { display: flex; justify-content: space-between; gap: 0.8rem; border-bottom: 1px dashed var(--line); padding-bottom: 0.2rem; }
.tone-outcomes li:last-child { border-bottom: none; }
.tone-outcomes .to-label { color: var(--ink-soft); }
.tone-outcomes .to-value { font-weight: 700; text-align: right; }
.example-line { display: flex; align-items: center; gap: 0.6rem; flex-wrap: wrap; }
.example-line .ex-th { font-size: 1.5rem; font-weight: 700; }
.example-line .ex-rm { color: var(--accent-dark); font-weight: 600; }
.example-line .ex-en { color: var(--ink-soft); }

/* ---------- tone rules chart ---------- */
.tone-table-wrap {
  overflow-x: auto;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.tone-table { width: 100%; border-collapse: collapse; min-width: 640px; }
.tone-table th, .tone-table td {
  text-align: left;
  padding: 0.6rem 0.85rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.tone-table thead th { background: #f7f3ea; color: var(--ink-soft); font-size: 0.92rem; }
.tone-table tbody tr:last-child td { border-bottom: none; }
.tone-table .tt-class { font-weight: 700; white-space: nowrap; }
.tone-table .tt-mark { color: var(--accent-dark); font-weight: 700; }
.tone-table td { font-weight: 600; }
.tone-table td.tt-none { color: var(--ink-soft); font-weight: 400; }
.tone-note { max-width: 68ch; color: var(--ink-soft); }
.tone-note p { margin: 0 0 0.8rem; }

/* ---------- CTA ---------- */
.alpha-cta {
  text-align: center;
  background: #f7f3ea;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.6rem 1.2rem;
  margin-top: 1.4rem;
}
.alpha-cta h2 { margin-top: 0; }
.alpha-cta p { color: var(--ink-soft); max-width: 55ch; margin: 0 auto 1.1rem; }
.alpha-cta .hero-actions { margin: 0; }