/* ==========================================================================
   UNOCU Ghost Theme — Monochrome B&W
   ========================================================================== */

:root {
  --color-bg: #ffffff;
  --color-surface: #fafafa;
  --color-text: #1a1a1a;
  --color-text-muted: #6b6b6b;
  --color-text-faint: #999999;
  --color-border: #e5e5e5;
  --color-accent: #1a1a1a;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.5rem;
  --text-2xl: 2rem;
  --text-3xl: 2.75rem;
  --radius: 16px;
  --radius-sm: 12px;
  --max-width: 1200px;
  --content-width: 680px;
}

/* Dark mode disabled — UNOCU brand is always light/white */

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  letter-spacing: -0.01em;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }

/* ==========================================================================
   HEADER
   ========================================================================== */

.site-header {
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  background: var(--color-bg);
  z-index: 100;
  backdrop-filter: blur(12px);
  background: rgba(255,255,255,0.92);
}


.site-header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-header__logo img { height: 24px; }
.site-header__title {
  font-size: var(--text-lg);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.site-header__nav ul {
  display: flex;
  gap: 2rem;
  list-style: none;
}
.site-header__nav a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color 0.2s;
}
.site-header__nav a:hover { color: var(--color-text); }

/* ==========================================================================
   MAIN
   ========================================================================== */

.site-main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

/* ==========================================================================
   BLOG HERO
   ========================================================================== */

.blog-hero {
  text-align: center;
  padding: 5rem 0 3rem;
}
.blog-hero__eyebrow {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}
.blog-hero__title {
  font-size: var(--text-3xl);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 1rem;
}
.blog-hero__subtitle {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 50ch;
  margin: 0 auto;
}
.blog-hero__avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  margin: 0 auto 1rem;
}

/* ==========================================================================
   FEATURED POST
   ========================================================================== */

.featured-post {
  margin-bottom: 3rem;
}
.featured-post__link {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 2rem;
  background: var(--color-surface);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.25s, box-shadow 0.25s;
}
.featured-post__link:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.06);
}
.featured-post__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.featured-post__placeholder {
  width: 100%;
  height: 100%;
  min-height: 280px;
  background: linear-gradient(135deg, var(--color-surface), var(--color-border));
}
.featured-post__content {
  padding: 2.5rem 2.5rem 2.5rem 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.featured-post__title {
  font-size: var(--text-2xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin: 0.75rem 0;
}
.featured-post__excerpt {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 1rem;
}

@media (max-width: 768px) {
  .featured-post__link {
    grid-template-columns: 1fr;
  }
  .featured-post__content {
    padding: 1.5rem;
  }
}

/* ==========================================================================
   TAG FILTER
   ========================================================================== */

.tag-filter {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
}
.tag-filter__item {
  font-size: var(--text-sm);
  font-weight: 500;
  padding: 0.375rem 1rem;
  border-radius: 99px;
  color: var(--color-text-muted);
  background: var(--color-surface);
  transition: all 0.2s;
}
.tag-filter__item:hover {
  color: var(--color-text);
  background: var(--color-border);
}
.tag-filter__item--active {
  background: var(--color-text);
  color: var(--color-bg);
}

/* ==========================================================================
   POST GRID
   ========================================================================== */

.post-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 4rem;
}
.post-grid--related {
  margin-bottom: 0;
}

@media (max-width: 900px) {
  .post-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .post-grid { grid-template-columns: 1fr; }
}

/* ==========================================================================
   POST CARD
   ========================================================================== */

.post-card__link {
  display: block;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--color-surface);
  transition: transform 0.25s, box-shadow 0.25s;
}
.post-card__link:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.06);
}
.post-card__image img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
}
.post-card__placeholder {
  width: 100%;
  aspect-ratio: 16/10;
  background: linear-gradient(135deg, var(--color-surface), var(--color-border));
}
.post-card__content {
  padding: 1.25rem;
}
.post-card__title {
  font-size: var(--text-base);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.3;
  margin: 0.5rem 0;
}
.post-card__excerpt {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 0.75rem;
}

/* ==========================================================================
   SHARED ELEMENTS
   ========================================================================== */

.post-tag {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  background: var(--color-bg);
  padding: 2px 8px;
  border-radius: 4px;
}
.post-meta {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

/* ==========================================================================
   ARTICLE (post.hbs / page.hbs)
   ========================================================================== */

.article {
  max-width: var(--content-width);
  margin: 0 auto;
  padding-bottom: 4rem;
}
.article__header {
  text-align: center;
  padding: 4rem 0 2rem;
}
.article__title {
  font-size: var(--text-3xl);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin: 0.75rem 0;
}
.article__excerpt {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: 56ch;
  margin: 0 auto;
}
.article__meta {
  margin-top: 2rem;
}
.article__author {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}
.article__author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
}
.article__author-name {
  font-size: var(--text-sm);
  font-weight: 600;
}
.article__meta-details {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.article__feature-image {
  margin: 2rem 0;
  border-radius: var(--radius);
  overflow: hidden;
}
.article__feature-image img {
  width: 100%;
}
.article__feature-image figcaption {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-align: center;
  margin-top: 0.75rem;
}

/* Article body — editorial prose */
.article__body {
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--color-text);
}
.article__body > * + * {
  margin-top: 1.5rem;
}
.article__body h2 {
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-top: 3rem;
}
.article__body h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-top: 2rem;
}
.article__body a {
  text-decoration: underline;
  text-underline-offset: 2px;
}
.article__body blockquote {
  border-left: 3px solid var(--color-border);
  padding-left: 1.5rem;
  margin-left: 0;
  color: var(--color-text-muted);
  font-style: italic;
}
.article__body ul, .article__body ol {
  padding-left: 1.5rem;
}
.article__body li + li {
  margin-top: 0.5rem;
}
.article__body pre {
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  overflow-x: auto;
  font-size: var(--text-sm);
}
.article__body code {
  font-size: 0.9em;
  background: var(--color-surface);
  padding: 0.15em 0.4em;
  border-radius: 4px;
}
.article__body pre code {
  background: none;
  padding: 0;
}
.article__body img {
  border-radius: var(--radius-sm);
  margin: 2rem 0;
}
.article__body figcaption {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-align: center;
  margin-top: 0.5rem;
}

/* Ghost card styles */
.article__body .kg-card { margin: 2rem 0; }
.article__body .kg-image-card img { border-radius: var(--radius-sm); }
.article__body .kg-width-wide { margin-left: -4rem; margin-right: -4rem; }
.article__body .kg-width-full { margin-left: calc(-50vw + 50%); margin-right: calc(-50vw + 50%); }
.article__body .kg-bookmark-card {
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  overflow: hidden;
}
.article__body .kg-bookmark-container {
  display: flex;
  text-decoration: none;
}
.article__body .kg-bookmark-content {
  padding: 1.25rem;
  flex: 1;
}
.article__body .kg-bookmark-title {
  font-size: var(--text-base);
  font-weight: 600;
}
.article__body .kg-bookmark-description {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}
.article__body .kg-bookmark-metadata {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-top: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.article__body .kg-bookmark-icon { width: 16px; height: 16px; }
.article__body .kg-bookmark-thumbnail {
  width: 200px;
  min-height: 100%;
}
.article__body .kg-bookmark-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0;
  margin: 0;
}

/* Article footer */
.article__footer {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}
.article__tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.article__tag-link {
  font-size: var(--text-xs);
  font-weight: 500;
  padding: 0.375rem 0.75rem;
  border-radius: 99px;
  background: var(--color-surface);
  color: var(--color-text-muted);
  transition: background 0.2s;
}
.article__tag-link:hover {
  background: var(--color-border);
  color: var(--color-text);
}

/* ==========================================================================
   RELATED POSTS
   ========================================================================== */

.related-posts {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 4rem 2rem;
  border-top: 1px solid var(--color-border);
}
.related-posts__title {
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: 2rem;
}

/* ==========================================================================
   PAGINATION
   ========================================================================== */

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  padding: 2rem 0 4rem;
}
.pagination__link {
  font-size: var(--text-sm);
  font-weight: 600;
  padding: 0.5rem 1.25rem;
  border-radius: 99px;
  background: var(--color-surface);
  transition: background 0.2s;
}
.pagination__link:hover { background: var(--color-border); }
.pagination__info {
  font-size: var(--text-sm);
  color: var(--color-text-faint);
}

/* ==========================================================================
   ERROR PAGE
   ========================================================================== */

.error-page {
  text-align: center;
  padding: 8rem 2rem;
}
.error-page__code {
  font-size: 6rem;
  font-weight: 800;
  letter-spacing: -0.05em;
  color: var(--color-border);
}
.error-page__message {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  margin: 1rem 0 2rem;
}
.error-page__link {
  font-size: var(--text-sm);
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  border-radius: 99px;
  background: var(--color-text);
  color: var(--color-bg);
  display: inline-block;
  transition: opacity 0.2s;
}
.error-page__link:hover { opacity: 0.85; }

/* ==========================================================================
   FOOTER
   ========================================================================== */

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 2rem;
  margin-top: 4rem;
}
.site-footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.site-footer__copy {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}
.site-footer__nav ul {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}
.site-footer__nav a {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  transition: color 0.2s;
}
.site-footer__nav a:hover { color: var(--color-text); }

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */

@media (max-width: 600px) {
  .site-header { padding: 1rem; }
  .site-main { padding: 0 1rem; }
  .blog-hero { padding: 3rem 0 2rem; }
  .blog-hero__title { font-size: var(--text-2xl); }
  .article__header { padding: 3rem 0 1.5rem; }
  .article__title { font-size: var(--text-2xl); }
  .article__body .kg-width-wide { margin-left: -1rem; margin-right: -1rem; }
}