/* ── Glossário ──────────────────────────────────────────────────── */
.glossary {
  padding: 24px 0 0;
}

.glossary__head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 24px;
}
.glossary__title {
  margin: 0;
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink-900);
}
.glossary__title em {
  font-style: normal;
  color: var(--eneva-teal);
}
.glossary__subtitle {
  margin: 8px 0 0;
  font-size: 15px;
  color: var(--ink-500);
  max-width: 520px;
}

.glossary__stats {
  display: flex;
  gap: 16px;
  font-size: 13px;
  color: var(--ink-500);
}
.glossary__stats strong {
  color: var(--ink-900);
  font-weight: 700;
}

.glossary__search {
  position: relative;
  margin-bottom: 28px;
}
.glossary__search-input {
  width: 100%;
  height: 56px;
  padding: 0 56px 0 56px;
  background: #FFFFFF;
  border: 1px solid var(--ink-100);
  border-radius: var(--radius-md);
  font-size: 15px;
  font-family: inherit;
  color: var(--ink-900);
  outline: none;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
  box-shadow: var(--shadow-sm);
}
.glossary__search-input::placeholder { color: var(--ink-300); }
.glossary__search-input:focus {
  border-color: var(--eneva-teal);
  box-shadow: 0 0 0 4px var(--eneva-teal-soft);
}
.glossary__search-icon {
  position: absolute;
  left: 20px; top: 50%;
  transform: translateY(-50%);
  color: var(--ink-300);
  pointer-events: none;
}
.glossary__search-clear {
  position: absolute;
  right: 12px; top: 50%;
  transform: translateY(-50%);
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--ink-50);
  color: var(--ink-700);
  display: none;
  place-items: center;
  font-size: 14px;
}
.glossary__search-clear.is-visible { display: grid; }

/* Index alfabético */
.glossary__alpha {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 24px;
  padding: 12px 16px;
  background: var(--ink-50);
  border-radius: var(--radius-md);
}
.glossary__alpha-btn {
  width: 30px; height: 30px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 700;
  color: var(--ink-500);
  display: grid;
  place-items: center;
  transition: all 0.15s var(--ease);
}
.glossary__alpha-btn:hover {
  background: var(--eneva-teal);
  color: #FFFFFF;
}
.glossary__alpha-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* Lista de termos por letra */
.glossary__group {
  margin-bottom: 32px;
}
.glossary__group-letter {
  display: inline-block;
  padding: 4px 14px;
  background: var(--eneva-teal);
  color: #FFFFFF;
  font-size: 14px;
  font-weight: 700;
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
  letter-spacing: 0.05em;
}
.glossary__list {
  display: grid;
  gap: 10px;
}

.glossary__entry {
  background: #FFFFFF;
  border: 1px solid var(--ink-100);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.glossary__entry:hover {
  border-color: var(--eneva-teal);
  box-shadow: var(--shadow-sm);
}
.glossary__entry-term {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink-900);
  letter-spacing: -0.01em;
}
.glossary__entry-acronym {
  display: inline-block;
  margin-left: 8px;
  font-size: 11px;
  font-weight: 700;
  color: var(--eneva-teal-700);
  background: var(--eneva-teal-50);
  padding: 2px 8px;
  border-radius: 999px;
  letter-spacing: 0.04em;
  vertical-align: middle;
}
.glossary__entry-def {
  margin: 0;
  font-size: 14px;
  color: var(--ink-500);
  line-height: 1.6;
}
.glossary__entry-def mark {
  background: var(--eneva-teal-soft);
  color: var(--ink-900);
  padding: 1px 3px;
  border-radius: 3px;
}

/* Empty state */
.glossary__empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--ink-300);
}
.glossary__empty strong {
  display: block;
  font-size: 18px;
  color: var(--ink-700);
  margin-bottom: 6px;
}

/* ── Botão "voltar ao topo" ──────────────────────────────────── */
.glossary__back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 20;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 48px;
  padding: 0 18px 0 14px;
  background: linear-gradient(135deg, var(--eneva-teal) 0%, var(--eneva-teal-700) 100%);
  color: #FFFFFF;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  box-shadow:
    0 8px 24px rgba(0, 159, 166, 0.35),
    0 2px 6px rgba(15, 26, 27, 0.12);
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity 0.25s var(--ease), transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.glossary__back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}
.glossary__back-to-top:hover {
  box-shadow:
    0 12px 32px rgba(0, 159, 166, 0.45),
    0 2px 6px rgba(15, 26, 27, 0.14);
  transform: translateY(-2px);
}
.glossary__back-to-top svg { display: block; }

@media (max-width: 720px) {
  .glossary__back-to-top {
    right: 16px;
    bottom: 16px;
    padding: 0;
    width: 48px;
    justify-content: center;
  }
  .glossary__back-to-top-label { display: none; }
}