.sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  position: sticky;
  top: var(--space-lg);
}

.sidebar__box {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
}

.sidebar__title {
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
  color: var(--color-text-body);
}

/* Sumário "Neste artigo" */
.sidebar__toc {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  counter-reset: toc-counter;
  padding-left: 0;
}

.sidebar__toc li {
  list-style: none;
  counter-increment: toc-counter;
  display: flex;
  gap: var(--space-sm);
  font-size: var(--fs-sm);
}

.sidebar__toc li::before {
  content: counter(toc-counter) ".";
  color: var(--color-accent);
  font-weight: var(--fw-semibold);
  flex-shrink: 0;
}

.sidebar__toc a {
  color: var(--color-text-secondary);
  line-height: 1.4;
}

.sidebar__toc a:hover {
  color: var(--color-accent);
}

/* Categorias */
.sidebar__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.sidebar__list a {
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
}

.sidebar__list a:hover {
  color: var(--color-accent);
}

.sidebar__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.sidebar__tag {
  padding: 4px 12px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: var(--fs-xs);
  color: var(--color-text-secondary);
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

.sidebar__tag:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* Artigos recentes */
.sidebar__recent {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.sidebar__recent-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.sidebar__recent-img {
  flex: 0 0 56px;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  object-fit: cover;
}

.sidebar__recent-img--placeholder {
  display: block;
  background: linear-gradient(135deg, #0d1b2e 0%, #1c3d6b 50%, #2f80ed 100%);
}

.sidebar__recent-title {
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--color-text-body);
  line-height: 1.4;
}

.sidebar__recent-item:hover .sidebar__recent-title {
  color: var(--color-accent);
}