/* ============================================================
   blog.css — Blog page styles
   ============================================================ */

/* ------------ Header -------------------------------------- */
.blog-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: var(--sp-6);
  margin-bottom: var(--sp-10);
}

/* ------------ Tag filter ---------------------------------- */
.tag-filter {
  display: flex;
  gap: var(--sp-2);
  flex-wrap: wrap;
  align-items: center;
}

.tag-filter__btn {
  display: inline-flex;
  align-items: center;
  padding: var(--sp-1) var(--sp-3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.tag-filter__btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary-lt);
}
.tag-filter__btn.active {
  background: rgba(124, 92, 252, 0.15);
  color: var(--color-primary-lt);
  border-color: var(--color-primary);
}

/* ------------ Full-width post card list ------------------- */
.blog-post-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--sp-6);
}

.post-card {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  padding: var(--sp-6);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-bg-surface);
  text-decoration: none;
  color: inherit;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}
.post-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 4px 16px rgba(124, 92, 252, 0.12);
  transform: translateY(-2px);
}

.post-card__date {
  font-size: var(--font-size-xs);
  color: var(--color-text-faint);
}

.post-card__title {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  line-height: var(--line-height-tight);
  margin: 0;
}

.post-card__excerpt {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: var(--line-height-loose);
  /* Show at most 2 lines */
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.post-card__tags {
  display: flex;
  gap: var(--sp-1);
  flex-wrap: wrap;
  margin-top: auto;
  padding-top: var(--sp-2);
}

/* .post-content Markdown styles live in design-system.css (shared with admin) */

/* ------------ Responsive ---------------------------------- */
@media (max-width: 700px) {
  .blog-post-list {
    grid-template-columns: 1fr;
  }
  .blog-header { flex-direction: column; align-items: flex-start; }
}

/* ------------ Search field -------------------------------- */
.blog-search {
  margin-bottom: var(--sp-4);
}

.blog-search__field {
  position: relative;
  display: flex;
  align-items: center;
}

.blog-search__icon {
  position: absolute;
  left: var(--sp-3);
  color: var(--color-text-faint);
  pointer-events: none;
}

.blog-search__input {
  width: 100%;
  padding: var(--sp-2) var(--sp-3) var(--sp-2) 2.25rem;
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-family: var(--font-family-sans);
  font-size: var(--font-size-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.blog-search__input::placeholder { color: var(--color-text-faint); }
.blog-search__input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(124, 92, 252, 0.15);
}

/* ------------ Pagination ---------------------------------- */
.blog-pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--sp-6);
  padding-top: var(--sp-4);
  border-top: 1px solid var(--color-border);
  gap: var(--sp-3);
}

.blog-pagination__info {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* ------------ Blog empty / no results --------------------- */
.blog-empty {
  padding: var(--sp-8) 0;
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}
.blog-empty a { color: var(--color-primary-lt); }

/* ------------ Full single post page ----------------------- */
.post-breadcrumb {
  margin-bottom: var(--sp-6);
}
.post-breadcrumb__back {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.post-breadcrumb__back:hover { color: var(--color-primary-lt); }

.post-full {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-10) var(--sp-12);
}

.post-full__header {
  margin-bottom: var(--sp-8);
  padding-bottom: var(--sp-6);
  border-bottom: 1px solid var(--color-border);
}

.post-full__tags {
  display: flex;
  gap: var(--sp-2);
  flex-wrap: wrap;
  margin-bottom: var(--sp-4);
}

.post-full__title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.02em;
  line-height: var(--line-height-tight);
  margin-bottom: var(--sp-4);
}

.post-full__meta {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.post-nav {
  margin-top: var(--sp-8);
}

.rp-header__permalink {
  color: var(--color-primary-lt);
  text-decoration: none;
  font-size: var(--font-size-xs);
}

@media (max-width: 700px) {
  .post-full { padding: var(--sp-6) var(--sp-4); }
  .post-full__title { font-size: var(--font-size-2xl); }
}

/* ------------ Share buttons ------------------------------- */
.share-buttons {
  display: flex;
  gap: 0.5rem;
  margin-top: var(--sp-4);
  flex-wrap: wrap;
}
.share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.375rem 0.6rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.share-btn:hover { color: var(--color-primary-lt); border-color: var(--color-primary); }
.share-btn[aria-label="Copy link"] { font-size: 1rem; }
/* SVG sizing for icon buttons */
.share-btn i { width: 1.1em; height: 1.1em; display: inline-block; font-size: 1.1rem; line-height: 1; }
.share-buttons { align-items: center; }