.container {
  width: 100%;
  max-width: 780px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header */
.site-header {
  background-color: var(--color-bg);
  border-bottom: 2px solid var(--color-accent);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.site-title:hover {
  color: var(--color-accent-dark);
}

/* Main */
.site-main {
  flex: 1;
  padding: 2.5rem 0;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 1.5rem 0;
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

/* Home tag bar */
.home-tags {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.75rem;
  padding: 0.75rem 1rem;
  background-color: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.home-tags__label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-right: 0.25rem;
}

.home-tags__all {
  font-size: 0.8rem;
  color: var(--color-accent-dark);
  margin-left: auto;
  white-space: nowrap;
}

/* Post list */
.post-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.post-card {
  background-color: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  position: relative;
}

.post-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 2px 12px 0 rgba(6, 182, 212, 0.08);
}

.post-card__title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
}

.post-card__title a {
  color: var(--color-text);
}

/* Stretched link: タイトルのリンクをカード全体に拡張 */
.post-card__title a::after {
  content: "";
  position: absolute;
  inset: 0;
}

.post-card__title a:hover {
  color: var(--color-accent-dark);
}

/* タグリンクはストレッチリンクより前面に出す */
.post-card__tags .tag {
  position: relative;
  z-index: 1;
}

.post-card__meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
  flex-wrap: wrap;
}

.post-card__description {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-top: 0.5rem;
}

.no-posts {
  color: var(--color-text-muted);
}

/* Tag index page */
.tags-index__title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.tags-index__list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.tags-index__list li {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.tags-index__count {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.tag--large {
  font-size: 0.875rem;
  padding: 0.3em 0.8em;
}

/* Tag page */
.tag-page__header {
  margin-bottom: 2rem;
}

.tag-page__back {
  font-size: 0.875rem;
  margin-bottom: 0.75rem;
}

.tag-page__back a {
  color: var(--color-text-muted);
}

.tag-page__title {
  margin-bottom: 0.5rem;
}

.tag-page__count {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

@media (max-width: 480px) {
  .site-main {
    padding: 1.5rem 0;
  }

  .post-card {
    padding: 1rem;
  }
}