/* ============================================================
   blog.css — Blog list and individual post page styles
   ============================================================ */

/* --- Blog list cards (on homepage and blog index) ------ */
.blog__card-link {
  display: block;
  color: inherit;
  text-decoration: none;
  margin-bottom: 0.55rem;
}
.blog__card-link:hover {
  text-decoration: none;
}

.blog__card-link .blog__card {
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius);
  background: var(--color-surface);
  transition: all 0.2s;
}
.blog__card-link:hover .blog__card {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.blog__card-link .blog__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
}
.blog__title {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.05rem;
  margin: 0;
  color: var(--color-text-heading);
}
.blog__card-link:hover .blog__title {
  color: var(--color-accent);
}
.blog__summary {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  margin: 0.15rem 0 0;
  line-height: 1.6;
}
.blog__date {
  font-size: 0.8rem;
  color: var(--color-text-tertiary);
  white-space: nowrap;
  font-style: italic;
  flex-shrink: 0;
}

.blog-empty,
.blog-error {
  text-align: center;
  color: var(--color-text-tertiary);
  padding: 2rem 0;
  font-style: italic;
}
.blog-error {
  color: var(--color-accent);
}

/* --- Individual blog post page ------------------------ */
.post__header {
  padding: 2.5rem 0 1rem;
  border-bottom: 1px solid var(--color-border-light);
  margin-bottom: 2rem;
}
.post__title {
  font-size: 2.4rem;
  margin-bottom: 0.5rem;
}
.post__date {
  font-size: 0.9rem;
  color: var(--color-text-tertiary);
  font-style: italic;
}

.post__content {
  font-size: 1.02rem;
  line-height: 1.85;
  color: var(--color-text);
}
.post__content h2 {
  margin-top: 2.5rem;
  font-size: 1.35rem;
}
.post__content h3 {
  margin-top: 1.8rem;
  font-size: 1.1rem;
}
.post__content p {
  margin-bottom: 1.25rem;
}
.post__content ul,
.post__content ol {
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
}
.post__content li {
  margin-bottom: 0.4rem;
}
.post__content img {
  margin: 1.5rem auto;
  display: block;
  max-width: 100%;
}
.post__content blockquote {
  border-left: 3px solid var(--color-accent);
  margin: 1.25rem 0;
  padding: 0.5rem 1.25rem;
  color: var(--color-text-secondary);
  font-style: italic;
  background: var(--color-accent-subtle);
  border-radius: 0 var(--radius) var(--radius) 0;
}
.post__content pre {
  background: var(--color-bg-warm);
  padding: 1.25rem;
  border-radius: var(--radius);
  overflow-x: auto;
  margin-bottom: 1.5rem;
  border: 1px solid var(--color-border-light);
  font-size: 0.9rem;
  line-height: 1.6;
}
.post__content pre code {
  background: none;
  padding: 0;
  color: var(--color-text);
  font-family: var(--font-mono);
}
.post__content code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--color-bg-warm);
  padding: 0.15em 0.45em;
  border-radius: 3px;
  color: var(--color-accent);
}
.post__content hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 2rem 0;
}
.post__content a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.post__content a:hover {
  color: var(--color-accent-hover);
}

/* --- Back link ----------------------------------------- */
.post__back {
  display: inline-block;
  margin-top: 3rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: all 0.15s;
}
.post__back:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  text-decoration: none;
}

/* --- MathJax display math spacing --------------------- */
.post__content mjx-container {
  margin: 1.5rem 0;
}

/* --- Responsive ---------------------------------------- */
@media (max-width: 768px) {
  .blog__card-link .blog__header {
    flex-direction: column;
    gap: 0.2rem;
  }
  .post__title {
    font-size: 1.8rem;
  }
}