/* ============================================================
   Blog — article + index styles.
   Built on top of colors_and_type.css + marketing.css (the same
   design system as index.html) — not the Bad Day Detector's
   separate bdd-light.css look.
   ============================================================ */

/* ---------- Index / listing ---------- */
.mk-article-index-head { max-width: 640px; padding-top: 48px; margin: 0 0 48px; }
.mk-article-index-head .mk-h2 { margin-top: 14px; }
.mk-article-index-head .mk-lead { margin-top: 12px; }

.mk-post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
  padding-bottom: 96px;
}
.mk-post-card {
  display: flex; flex-direction: column;
  background: #fff; border: 1px solid rgba(11,27,61,0.1); border-radius: 20px;
  padding: 28px; text-decoration: none; color: inherit;
  transition: transform 0.2s var(--ease-out), box-shadow 0.2s var(--ease-out);
}
.mk-post-card:hover { transform: translateY(-4px); box-shadow: 0 20px 40px -20px rgba(11,27,61,0.18); }
.mk-post-card-cover { width: 100%; aspect-ratio: 16/9; object-fit: cover; border-radius: 12px; margin-bottom: 16px; }
.mk-post-card-date { font: 600 12px/1 var(--font-sans); text-transform: uppercase; letter-spacing: 0.08em; color: #6B7280; margin-bottom: 10px; display: block; }
.mk-post-card h3 { margin: 0 0 8px; }
.mk-post-card p { margin: 0; flex: 1; }
.mk-post-card-more { display: inline-flex; align-items: center; gap: 6px; margin-top: 16px; font: 700 13px/1 var(--font-sans); color: #3490F0; }
.mk-post-card-more svg { width: 14px; height: 14px; }

/* ---------- Article ---------- */
.mk-article { max-width: 720px; padding-top: 48px; padding-bottom: 96px; }
.mk-article-head { margin-bottom: 32px; }
.mk-article-head h1 { font: 800 44px/1.1 var(--font-sans); letter-spacing: -0.03em; color: #0B1B3D; margin: 16px 0 12px; }
.mk-article-subtitle { font: 500 19px/1.4 var(--font-sans); color: #4B5563; margin: 0 0 14px; max-width: 56ch; }
.mk-article-meta { font: 500 14px/1 var(--font-sans); color: #6B7280; margin: 0; }
.mk-article-cover { width: 100%; border-radius: var(--r-lg); margin-bottom: 40px; display: block; }

.mk-article-sources { font: 400 13px/1.6 var(--font-sans); color: #9CA3AF; margin: 56px 0 0; padding-top: 24px; border-top: 1px dashed rgba(11,27,61,0.15); }

.mk-series-nav { margin-top: 40px; padding: 24px; background: #F3F4F6; border-radius: var(--r-lg); }
.mk-series-nav-label { display: block; font: 700 11px/1 var(--font-sans); text-transform: uppercase; letter-spacing: 0.1em; color: #6B7280; margin-bottom: 14px; }
.mk-series-nav ol { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; counter-reset: none; }
.mk-series-nav li { font: 500 14px/1.4 var(--font-sans); color: #374151; }
.mk-series-nav li.is-current { color: #0B1B3D; font-weight: 700; }
.mk-series-nav a { color: #374151; text-decoration: none; }
.mk-series-nav a:hover { color: #3490F0; text-decoration: underline; }

.mk-article-back { margin-top: 56px; }
.mk-article-back a { font: 600 14px/1 var(--font-sans); color: #3490F0; text-decoration: none; }
.mk-article-back a:hover { text-decoration: underline; }

.mk-article-body { font: 400 18px/1.75 var(--font-sans); color: #374151; }
.mk-article-body h2 { font: 800 28px/1.2 var(--font-sans); letter-spacing: -0.02em; color: #0B1B3D; margin: 48px 0 16px; }
.mk-article-body h3 { font: 700 21px/1.3 var(--font-sans); letter-spacing: -0.015em; color: #0B1B3D; margin: 36px 0 12px; }
.mk-article-body p { margin: 0 0 22px; }
.mk-article-body ul, .mk-article-body ol { margin: 0 0 22px; padding-left: 24px; }
.mk-article-body li { margin-bottom: 10px; }
.mk-article-body li::marker { color: #3490F0; font-weight: 700; }
.mk-article-body a { color: #0B1B3D; text-decoration: underline; text-decoration-color: rgba(11,27,61,0.3); text-underline-offset: 3px; }
.mk-article-body a:hover { text-decoration-color: #0B1B3D; }
.mk-article-body blockquote {
  margin: 32px 0; padding: 4px 0 4px 24px;
  border-left: 3px solid #3490F0;
  font-style: italic; color: #1F2937;
}
.mk-article-body blockquote p:last-child { margin-bottom: 0; }
.mk-article-body code {
  font: 400 15px/1 var(--font-mono);
  background: rgba(11,27,61,0.06); padding: 2px 6px; border-radius: 4px;
}
.mk-article-body pre {
  background: var(--bg-elev-1); color: var(--fg-2);
  padding: 20px 24px; border-radius: var(--r-lg);
  overflow-x: auto; margin: 0 0 22px;
}
.mk-article-body pre code { background: none; padding: 0; color: inherit; }
.mk-article-body img { max-width: 100%; border-radius: var(--r-lg); display: block; margin: 32px 0; }
.mk-article-body figcaption { font: 500 13px/1.4 var(--font-sans); color: #6B7280; text-align: center; margin-top: -20px; margin-bottom: 32px; }
.mk-article-body hr { border: none; border-top: 1px dashed rgba(11,27,61,0.15); margin: 40px 0; }

@media (max-width: 640px) {
  .mk-article-head h1 { font-size: 32px; }
  .mk-article-body { font-size: 16px; }
  .mk-post-grid { grid-template-columns: 1fr; }
}