/* ============================================================================
   READER CONTROLS v1.0 — Controles de lectura para el lector
   Permite al visitante ajustar tamaño de fuente e interlineado
   ============================================================================ */

/* ── Barra de controles ── */
.reader-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-bottom: 1px solid var(--border-light, rgba(255,255,255,0.08));
  background: var(--bg-secondary, rgba(255,255,255,0.02));
  animation: readerControlsIn 0.3s ease;
}

@keyframes readerControlsIn {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Grupo de botones ── */
.reader-ctrl-group {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  background: var(--card-bg, #1a1a1a);
  border: 1px solid var(--border-color, #374151);
  border-radius: 8px;
  padding: 0.2rem;
}

/* ── Botón individual ── */
.reader-ctrl-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: none;
  background: transparent;
  color: var(--text-secondary, #d1d5db);
  font-size: 0.8rem;
  cursor: pointer;
  border-radius: 6px;
  transition: all 0.15s ease;
  -webkit-tap-highlight-color: transparent;
}

.reader-ctrl-btn:hover {
  background: var(--bg-hover, rgba(255,255,255,0.08));
  color: var(--text-primary, #f5f2ed);
}

.reader-ctrl-btn:active {
  transform: scale(0.92);
}

.reader-ctrl-btn.active {
  background: rgba(155, 44, 44, 0.15);
  color: var(--accent-burgundy, #9b2c2c);
}

/* ── Separador entre grupos ── */
.reader-ctrl-sep {
  width: 1px;
  height: 20px;
  background: var(--border-color, #374151);
  margin: 0 0.35rem;
  flex-shrink: 0;
}

/* ── Label de tamaño actual ── */
.reader-ctrl-label {
  font-family: var(--font-sans, 'Inter', sans-serif);
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--text-tertiary, #9ca3af);
  min-width: 22px;
  text-align: center;
  user-select: none;
}

/* ── Botón reset ── */
.reader-ctrl-btn.reset-btn {
  font-family: var(--font-sans, 'Inter', sans-serif);
  font-size: 0.6rem;
  font-weight: 600;
  width: auto;
  padding: 0 0.5rem;
  letter-spacing: 0.02em;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .reader-controls {
    padding: 0.4rem 0.75rem;
    gap: 0.35rem;
  }
  
  .reader-ctrl-btn {
    width: 28px;
    height: 28px;
    font-size: 0.75rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .reader-controls { animation: none; }
  .reader-ctrl-btn { transition: none; }
}