/* ================================================================
   SGS Glossary — glossary.css
   Letter navigation, term cards, search, responsive
   ================================================================ */

/* ── LETTER NAVIGATION ─────────────────────────────────────── */
.sgs-glossary-nav-wrap {
  background: var(--sgs-section-alt);
  border-bottom: 1px solid var(--sgs-border);
  position: sticky;
  top: var(--sgs-header-h);
  z-index: 100;
}
.sgs-glossary-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 12px 0;
  justify-content: center;
}
.sgs-glossary-letter {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px; height: 34px;
  font-size: .82rem;
  font-weight: 600;
  color: var(--sgs-purple);
  background: #fff;
  border: 1px solid var(--sgs-border);
  border-radius: var(--sgs-radius-sm);
  text-decoration: none;
  transition: all var(--tr);
}
.sgs-glossary-letter:hover {
  background: var(--sgs-purple);
  color: #fff;
  border-color: var(--sgs-purple);
}
.sgs-glossary-letter--disabled {
  color: var(--sgs-muted);
  opacity: .35;
  pointer-events: none;
  background: transparent;
  border-color: transparent;
}

/* ── COUNTER (hero) ────────────────────────────────────────── */
.sgs-glossary-counter {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}
.sgs-glossary-counter-num {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--sgs-purple-lt);
  line-height: 1;
}
.sgs-glossary-counter-label {
  font-size: .78rem;
  color: rgba(255,255,255,.45);
  text-transform: uppercase;
  letter-spacing: .08em;
}

/* ── SEARCH ────────────────────────────────────────────────── */
.sgs-glossary-search {
  position: relative;
  max-width: 480px;
  margin: 0 auto;
}
.sgs-glossary-search i {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.1rem;
  color: var(--sgs-muted);
  pointer-events: none;
}
.sgs-glossary-search input {
  width: 100%;
  padding: 12px 16px 12px 44px;
  font-size: .95rem;
  font-family: inherit;
  border: 1px solid var(--sgs-border);
  border-radius: var(--sgs-radius);
  background: #fff;
  color: #333;
  transition: border-color var(--tr), box-shadow var(--tr);
}
.sgs-glossary-search input:focus {
  outline: none;
  border-color: var(--sgs-accent);
  box-shadow: 0 0 0 3px rgba(104,82,237,.12);
}
.sgs-glossary-search input::placeholder {
  color: var(--sgs-muted);
}

/* ── TERM GROUPS ───────────────────────────────────────────── */
.sgs-glossary-group {
  display: flex;
  gap: 24px;
  padding: 32px 0;
  border-bottom: 1px solid var(--sgs-border);
  scroll-margin-top: calc(var(--sgs-header-h) + 60px);
}
.sgs-glossary-group:last-child {
  border-bottom: none;
}
.sgs-glossary-group-letter {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--sgs-purple);
  background: rgba(89,49,150,.06);
  border-radius: var(--sgs-radius);
}
.sgs-glossary-group-terms {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ── TERM CARD ─────────────────────────────────────────────── */
.sgs-glossary-term {
  padding: 16px 20px;
  background: #fff;
  border: 1px solid var(--sgs-border);
  border-radius: var(--sgs-radius);
  transition: border-color var(--tr), box-shadow var(--tr);
}
.sgs-glossary-term:hover {
  border-color: rgba(89,49,150,.25);
  box-shadow: 0 4px 16px rgba(89,49,150,.06);
}
.sgs-glossary-term-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--sgs-dark);
  margin: 0 0 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.sgs-glossary-term-name a {
  color: inherit;
  text-decoration: none;
  transition: color var(--tr);
}
.sgs-glossary-term-name a:hover {
  color: var(--sgs-purple);
}
.sgs-glossary-term-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 22px;
  height: 22px;
  padding: 0 6px;
  font-size: .68rem;
  font-weight: 600;
  color: var(--sgs-purple);
  background: rgba(89,49,150,.08);
  border-radius: 100px;
}
.sgs-glossary-term-desc {
  font-size: .88rem;
  color: #666;
  line-height: 1.6;
  margin: 0;
}

/* ── TAG ARCHIVE EXTRAS ────────────────────────────────────── */
.sgs-tag-article-count {
  font-weight: 400;
  color: var(--sgs-muted);
  font-size: .9em;
}
.sgs-tag-back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .88rem;
  font-weight: 500;
  color: var(--sgs-purple);
  text-decoration: none;
  transition: color var(--tr);
}
.sgs-tag-back-link:hover {
  color: var(--sgs-dark-mid);
}
.sgs-glossary-empty-tag {
  text-align: center;
  padding: 64px 24px;
}
.sgs-glossary-empty-tag h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--sgs-dark);
  margin-bottom: 8px;
}

/* ── RESPONSIVE ────────────────────────────────────────────── */
@media (max-width: 767px) {
  .sgs-glossary-nav {
    gap: 3px;
    padding: 10px 0;
  }
  .sgs-glossary-letter {
    width: 28px; height: 28px;
    font-size: .72rem;
  }
  .sgs-glossary-group {
    flex-direction: column;
    gap: 12px;
    padding: 24px 0;
  }
  .sgs-glossary-group-letter {
    width: 40px;
    height: 40px;
    font-size: 1.3rem;
  }
  .sgs-glossary-term {
    padding: 14px 16px;
  }
  .sgs-glossary-term-name {
    font-size: .95rem;
  }
}