/* ============================================
   Blog (STO-289)
   Index cards and the single post reading view. Breadcrumbs come from category-page.css.
   ============================================ */

/* Admin editor: Write / Preview tabs above the Markdown box, as on GitHub */
.blog-editor__tabs {
    display: flex;
    gap: var(--space-xs);
    border-bottom: 1px solid var(--color-border);
}

.blog-editor__tab {
    margin-bottom: -1px;
    padding: var(--space-sm) var(--space-md);
    border: 1px solid transparent;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    background: none;
    color: var(--color-text-secondary);
    font: inherit;
    cursor: pointer;
}

.blog-editor__tab:hover {
    color: var(--color-text-primary);
}

.blog-editor__tab--active {
    border-color: var(--color-border);
    border-bottom-color: var(--color-white);
    background: var(--color-white);
    color: var(--color-text-primary);
    font-weight: 600;
}

.blog-editor__input {
    border-top-left-radius: 0;
    border-top-right-radius: 0;
    font-family: var(--font-family-mono, monospace);
}

.blog-editor__preview {
    min-height: 200px;
    padding: var(--space-md);
    border: 1px solid var(--color-border);
    border-top: 0;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    background: var(--color-white);
}

/* Index */
.blog-index__title {
    margin-bottom: var(--space-sm);
}

.blog-index__intro {
    margin-bottom: var(--space-2xl);
    color: var(--color-text-secondary);
}

.blog-index__empty {
    color: var(--color-text-secondary);
}

.blog-index__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
}

.blog-index__pager {
    margin-top: var(--space-2xl);
}

@media (min-width: 768px) {
    .blog-index__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .blog-index__grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Card */
.blog-card {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-white);
}

.blog-card__image-link {
    display: block;
}

.blog-card__image {
    display: block;
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
}

.blog-card__body {
    display: flex;
    flex: 1;
    flex-direction: column;
    gap: var(--space-sm);
    padding: var(--space-lg);
}

.blog-card__date {
    font-size: var(--font-size-small);
    color: var(--color-text-tertiary);
}

.blog-card__title {
    margin: 0;
    font-size: var(--font-size-xl);
    line-height: var(--line-height-tight, 1.25);
}

.blog-card__link {
    color: var(--color-text-primary);
    text-decoration: none;
}

.blog-card__link:hover {
    color: var(--color-vivid-purple);
}

.blog-card__excerpt {
    margin: 0;
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

.blog-card__more {
    margin-top: auto;
    color: var(--color-vivid-purple);
    font-weight: 600;
    text-decoration: none;
}

.blog-card__more:hover {
    text-decoration: underline;
}

/* Post */
.blog-post__header,
.blog-post__body,
.blog-post__back {
    max-width: 760px;
}

.blog-post__header {
    margin-bottom: var(--space-xl);
}

.blog-post__title {
    margin-bottom: var(--space-sm);
}

.blog-post__date {
    font-size: var(--font-size-small);
    color: var(--color-text-tertiary);
}

.blog-post__image {
    display: block;
    width: 100%;
    max-width: 760px;
    height: auto;
    margin-bottom: var(--space-xl);
    border-radius: var(--radius-lg);
}

.blog-post__body {
    color: var(--color-text-secondary);
    font-size: var(--font-size-md);
    line-height: var(--line-height-relaxed);
}

.blog-post__body p,
.blog-post__body ul,
.blog-post__body ol,
.blog-post__body blockquote {
    margin: 0 0 var(--space-md);
}

.blog-post__body h2,
.blog-post__body h3,
.blog-post__body h4 {
    margin: var(--space-xl) 0 var(--space-sm);
    color: var(--color-text-primary);
}

.blog-post__body ul,
.blog-post__body ol {
    padding-left: var(--space-lg);
}

.blog-post__body li {
    margin-bottom: var(--space-xs);
}

.blog-post__body a {
    color: var(--color-vivid-purple);
}

.blog-post__body img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
}

.blog-post__body blockquote {
    padding-left: var(--space-md);
    border-left: 4px solid var(--color-border);
    font-style: italic;
}

.blog-post__body hr {
    margin: var(--space-xl) 0;
    border: 0;
    border-top: 1px solid var(--color-border);
}

.blog-post__back {
    margin-top: var(--space-2xl);
}

.blog-post__back a {
    color: var(--color-vivid-purple);
    text-decoration: none;
}

.blog-post__back a:hover {
    text-decoration: underline;
}