/* adi-blog.css — Blog-specific styles for additiveio.com
   All selectors scoped to light-top context per design-spec shared_containers contract */

/* ─────────────────────────────────────────────
   Blog index page
───────────────────────────────────────────── */
.adi-blog-index {
  background: var(--bg-light);
  min-height: 100vh;
}

.adi-blog-header {
  background: var(--bg-light);
  padding: calc(64px + var(--sp-8)) 0 var(--sp-6);
  border-bottom: 1px solid var(--border-light);
}

.adi-blog-header__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--sp-3);
}

.adi-blog-header__title {
  font-size: clamp(2rem, 4vw, 3rem);
  color: var(--fg-light-primary);
  margin-bottom: var(--sp-2);
}

.adi-blog-header__sub {
  font-size: 1.0625rem;
  color: var(--fg-light-secondary);
  max-width: 560px;
}

/* Blog grid */
.adi-blog-grid-section {
  padding: var(--sp-8) 0;
  background: var(--bg-light);
}

.adi-blog-grid-section__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--sp-3);
}

.adi-blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-4);
}

.adi-blog-card {
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: 4px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.2s;
}

.adi-blog-card:hover {
  box-shadow: 0 4px 24px rgba(14,22,32,0.08);
}

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

.adi-blog-card__body {
  padding: var(--sp-3);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.adi-blog-card__meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--titanium-grey);
  margin-bottom: var(--sp-2);
  display: flex;
  gap: var(--sp-2);
}

.adi-blog-card__title {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--fg-light-primary);
  line-height: 1.3;
  margin-bottom: var(--sp-2);
}

.adi-blog-card__excerpt {
  font-size: 0.875rem;
  color: var(--fg-light-secondary);
  line-height: 1.65;
  flex: 1;
  margin-bottom: var(--sp-3);
}

.adi-blog-card__link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent-aa-light);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.15s;
}

.adi-blog-card__link:hover {
  gap: 10px;
}

/* Subscribe section */
.adi-blog-subscribe {
  padding: var(--sp-10) 0;
  background: var(--bg-white);
  border-top: 1px solid var(--border-light);
}

.adi-blog-subscribe__inner {
  max-width: 560px;
  margin: 0 auto;
  padding: 0 var(--sp-3);
  text-align: center;
}

.adi-blog-subscribe__title {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--fg-light-primary);
  margin-bottom: var(--sp-1);
}

.adi-blog-subscribe__sub {
  font-size: 0.9375rem;
  color: var(--fg-light-secondary);
  margin-bottom: var(--sp-4);
}

.adi-subscribe-form {
  display: flex;
  gap: var(--sp-2);
  max-width: 400px;
  margin: 0 auto;
}

.adi-subscribe-form input {
  flex: 1;
  padding: 11px 14px;
  border: 1px solid var(--border-light);
  border-radius: 3px;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  color: var(--fg-light-primary);
  background: var(--bg-white);
}

.adi-subscribe-form input:focus {
  outline: none;
  border-color: var(--accent-aa-light);
}

/* ─────────────────────────────────────────────
   Blog article page
───────────────────────────────────────────── */
.adi-blog-article-page {
  background: var(--bg-white);
  min-height: 100vh;
}

.adi-article-header {
  background: var(--bg-light);
  padding: calc(64px + var(--sp-8)) 0 var(--sp-6);
  border-bottom: 1px solid var(--border-light);
}

.adi-article-header__inner {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 var(--sp-3);
}

.adi-article-header__breadcrumb {
  font-size: 0.8rem;
  color: var(--fg-light-secondary);
  margin-bottom: var(--sp-2);
}

.adi-article-header__breadcrumb a {
  color: var(--accent-aa-light);
}

.adi-article-header__title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  color: var(--fg-light-primary);
  line-height: 1.15;
  margin-bottom: var(--sp-3);
}

.adi-article-header__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--titanium-grey);
}

.adi-article-header__meta span {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Article body */
.adi-article-body-wrapper {
  max-width: 760px;
  margin: 0 auto;
  padding: var(--sp-6) var(--sp-3) var(--sp-10);
}

/* Article cover image — natural ratio, no crop */
.adi-blog-article__cover {
  width: 100%;
  height: auto;
  border-radius: 4px;
  display: block;
  margin-bottom: var(--sp-6);
  /* NO aspect-ratio override — natural dimensions per design-spec.blog_conventions.article_cover */
}

/* Body typography — scoped to light-top context */
body.adi-page--light-top .adi-blog-article h2 {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--fg-light-primary);
  margin-top: var(--sp-6);
  margin-bottom: var(--sp-2);
}

body.adi-page--light-top .adi-blog-article h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--fg-light-primary);
  margin-top: var(--sp-4);
  margin-bottom: var(--sp-1);
}

body.adi-page--light-top .adi-blog-article p {
  font-size: 1rem;
  color: var(--fg-light-secondary);
  line-height: 1.8;
  margin-bottom: var(--sp-3);
}

body.adi-page--light-top .adi-blog-article ul,
body.adi-page--light-top .adi-blog-article ol {
  padding-left: var(--sp-4);
  margin-bottom: var(--sp-3);
}

body.adi-page--light-top .adi-blog-article li {
  font-size: 1rem;
  color: var(--fg-light-secondary);
  line-height: 1.75;
  margin-bottom: 6px;
  list-style: disc;
}

body.adi-page--light-top .adi-blog-article ol li {
  list-style: decimal;
}

body.adi-page--light-top .adi-blog-article code {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  background: var(--bg-light);
  padding: 2px 6px;
  border-radius: 3px;
  color: var(--fg-light-primary);
}

body.adi-page--light-top .adi-blog-article a {
  color: var(--accent-aa-light);
  text-decoration: underline;
}

body.adi-page--light-top .adi-blog-article strong {
  font-weight: 600;
  color: var(--fg-light-primary);
}

body.adi-page--light-top .adi-blog-article blockquote {
  border-left: 3px solid var(--accent-aa-light);
  padding-left: var(--sp-3);
  margin: var(--sp-4) 0;
  color: var(--fg-light-secondary);
  font-style: italic;
}

/* Article body wrapper (used in HTML as .adi-article-body / .adi-article-body__inner) */
.adi-article-body {
  padding: var(--sp-8) 0 var(--sp-10);
  background: var(--bg-white);
}

.adi-article-body__inner {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 var(--sp-3);
}

/* Article cover image (used as .adi-article-cover figure) */
.adi-article-cover {
  max-width: 760px;
  margin: 0 auto;
  padding: var(--sp-4) var(--sp-3) 0;
  background: var(--bg-white);
}

.adi-article-cover img {
  width: 100%;
  height: auto;
  border-radius: 4px;
  display: block;
}

/* Header meta sub-elements */
.adi-article-header__back {
  color: var(--accent-aa-light);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
}

.adi-article-header__date {
  color: var(--titanium-grey);
}

.adi-article-header__lede {
  font-size: 1.125rem;
  color: var(--fg-light-secondary);
  line-height: 1.65;
  margin-top: var(--sp-3);
  max-width: 640px;
}

.adi-article-header__sep {
  color: var(--titanium-grey);
  opacity: 0.5;
}

/* Related grid using blog card layout */
.adi-article-related__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-4);
}

/* Related posts section */
.adi-article-related {
  background: var(--bg-light);
  padding: var(--sp-10) 0;
  border-top: 1px solid var(--border-light);
}

.adi-article-related__inner {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 var(--sp-3);
}

.adi-article-related__title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--fg-light-primary);
  margin-bottom: var(--sp-4);
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.75rem;
}

.adi-related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-3);
}

.adi-related-card {
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: 4px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.adi-related-card__img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  height: auto;
  display: block;
}

.adi-related-card__body {
  padding: var(--sp-2) var(--sp-2);
}

.adi-related-card__meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--titanium-grey);
  margin-bottom: 4px;
}

.adi-related-card__title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--fg-light-primary);
  line-height: 1.35;
}

/* ─────────────────────────────────────────────
   Responsive blog
───────────────────────────────────────────── */
@media (max-width: 768px) {
  .adi-blog-grid {
    grid-template-columns: 1fr 1fr;
  }

  .adi-related-grid {
    grid-template-columns: 1fr 1fr;
  }

  .adi-subscribe-form {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .adi-blog-grid {
    grid-template-columns: 1fr;
  }

  .adi-related-grid {
    grid-template-columns: 1fr;
  }
}