/* ==========================================================================
   Blog — listing + article. Loaded after product.css (reuses its :root vars,
   header, footer, .btn-cta and form modal). Scoped to blog pages only.
   ========================================================================== */

.blog-main {
    padding-top: 120px;
}

/* ===== Listing page ===== */
.blog-listing-hero {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 2.5rem 2rem 1rem;
    text-align: center;
}
.blog-listing-hero .section-label {
    margin-bottom: 1rem;
}
.blog-listing-title {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.5px;
    color: var(--color-text);
    margin-bottom: 1rem;
}
.blog-listing-subtitle {
    font-size: 1.2rem;
    line-height: 1.7;
    color: var(--color-text-dim);
    max-width: 620px;
    margin: 0 auto;
}
.blog-card-grid {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 3rem 2rem 5rem;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 2rem;
}
.blog-card {
    display: flex;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--color-glass-border);
    border-radius: 16px;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}
.blog-card:hover {
    transform: translateY(-4px);
    border-color: rgba(23, 116, 255, 0.4);
    box-shadow: 0 12px 40px rgba(23, 116, 255, 0.15);
}
.blog-card-thumb {
    aspect-ratio: 16 / 9;
    width: 100%;
    object-fit: cover;
    background: var(--color-bg-navy);
    display: block;
}
.blog-card-body {
    padding: 1.5rem 1.6rem 1.8rem;
    display: flex;
    flex-direction: column;
    gap: 0.7rem;
}
.blog-card-date {
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-blue);
}
.blog-card-title {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 700;
    line-height: 1.3;
    color: var(--color-text);
}
.blog-card-excerpt {
    font-size: 0.98rem;
    line-height: 1.6;
    color: var(--color-text-dim);
}

/* ===== Article page ===== */
.article-cover {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto 2.5rem;
    padding: 0 2rem;
}
.article-cover img {
    width: 100%;
    border-radius: 16px;
    border: 1px solid var(--color-glass-border);
    display: block;
}
.article-header {
    max-width: 720px;
    margin: 0 auto;
    padding: 0 1.5rem;
}
.article-title {
    font-family: var(--font-heading);
    font-size: 2.6rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.5px;
    color: var(--color-text);
    margin-bottom: 1rem;
}
.article-subtitle {
    font-size: 1.25rem;
    line-height: 1.6;
    color: var(--color-text-dim);
    margin-bottom: 2rem;
}
.author-block {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.2rem 0 1.5rem;
    border-top: 1px solid var(--color-glass-border);
    border-bottom: 1px solid var(--color-glass-border);
    margin-bottom: 3rem;
}
.author-photo {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    object-fit: cover;
    border: 1px solid var(--color-glass-border);
    flex-shrink: 0;
}
.author-info {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}
.author-name {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    color: var(--color-text);
}
.author-meta {
    font-size: 0.88rem;
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-wrap: wrap;
}
.author-linkedin {
    color: var(--color-blue);
    text-decoration: none;
    font-weight: 600;
}
.author-linkedin:hover {
    text-decoration: underline;
}
.article-body {
    max-width: 720px;
    margin: 0 auto;
    padding: 0 1.5rem 4rem;
    font-family: var(--font-body);
    font-size: 1.08rem;
    line-height: 1.8;
    color: var(--color-text-dim);
}
.article-body h2 {
    font-family: var(--font-heading);
    font-size: 1.7rem;
    font-weight: 700;
    color: var(--color-text);
    margin: 2.8rem 0 1rem;
    letter-spacing: -0.3px;
}
.article-body p {
    margin: 0 0 1.4rem;
}
.article-body ul {
    margin: 0 0 1.6rem;
    padding-left: 0;
    list-style: none;
}
.article-body li {
    position: relative;
    padding-left: 1.6rem;
    margin-bottom: 0.9rem;
}
.article-body li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.65em;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--color-blue);
}
.article-body strong {
    color: var(--color-text);
    font-weight: 600;
}
.article-body a {
    color: var(--color-blue);
}

/* Diagram figures — source diagrams are light-background, so present them on an
   intentional light card rather than floating on the black page. */
.article-figure {
    margin: 2.5rem 0;
    background: #f4f6fb;
    border-radius: 14px;
    padding: 1.2rem;
    border: 1px solid var(--color-glass-border);
}
.article-figure img {
    width: 100%;
    display: block;
    border-radius: 6px;
}
.article-figure figcaption {
    margin-top: 0.9rem;
    font-size: 0.85rem;
    line-height: 1.5;
    color: rgba(0, 0, 0, 0.55);
    text-align: center;
}
.article-note {
    max-width: 720px;
    margin: 0 auto 4rem;
    padding: 1.2rem 1.5rem;
    font-size: 0.9rem;
    font-style: italic;
    color: var(--color-text-muted);
    border-left: 2px solid var(--color-glass-border);
}

@media (max-width: 768px) {
    .blog-main { padding-top: 96px; }
    .blog-listing-title { font-size: 2.2rem; }
    .article-title { font-size: 2rem; }
    .article-cover { padding: 0 1rem; }
}