/* =========================================================================
   Dr. Notes — Blog listing and article pages
   Readability first: a 720px measure, generous line height and quiet
   chrome. Motion is limited to a reading-progress bar and card hovers.
   ========================================================================= */

/* Listing ---------------------------------------------------------------- */
.dn-blog-hero {
  padding: clamp(40px, 5vw, 80px) 0 clamp(28px, 3vw, 40px);
  background:
    radial-gradient(900px 360px at 85% -10%, rgba(63, 111, 135, 0.10), transparent 65%),
    var(--dn-bg);
}
.dn-blog-hero .dn-h1 span { color: var(--dn-accent); }
.dn-blog-hero .dn-lead { max-width: 620px; }

.dn-blog-filters {
  display: grid;
  gap: 16px;
  margin-top: 32px;
}
@media (min-width: 900px) {
  .dn-blog-filters { grid-template-columns: minmax(280px, 420px) minmax(0, 1fr); align-items: center; gap: 24px; }
}
.dn-search { position: relative; }
.dn-search .dn-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  width: 19px;
  height: 19px;
  transform: translateY(-50%);
  color: var(--dn-text-muted);
  pointer-events: none;
}
.dn-search .dn-input { padding-left: 44px; }
.dn-chip-row { display: flex; gap: 8px; overflow-x: auto; scrollbar-width: none; padding: 2px; margin: -2px; }
/* Grid items default to min-width:auto, which let the chip row widen the page on phones */
.dn-blog-filters > * { min-width: 0; }
.dn-chip-row::-webkit-scrollbar { display: none; }

.dn-blog-list { padding: 8px 0 clamp(64px, 6vw, 96px); background: var(--dn-bg); }
.dn-blog-count { margin: 0 0 20px; color: var(--dn-text-muted); font-size: var(--dn-fs-label); }

/* The newest post leads on page one */
@media (min-width: 900px) {
  .dn-post-grid--featured > .dn-post-card:first-child {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  }
  .dn-post-grid--featured > .dn-post-card:first-child .dn-post-card__media { aspect-ratio: auto; min-height: 320px; }
  .dn-post-grid--featured > .dn-post-card:first-child .dn-post-card__body { justify-content: center; padding: clamp(28px, 3vw, 48px); gap: 14px; }
  .dn-post-grid--featured > .dn-post-card:first-child h3 { font-size: clamp(1.5rem, 1.2rem + 0.8vw, 2rem); line-height: 1.2; letter-spacing: -0.02em; }
  .dn-post-grid--featured > .dn-post-card:first-child p { -webkit-line-clamp: 4; font-size: var(--dn-fs-body); }
}

.blog-pagination { margin-top: 40px; }
.dn-empty {
  grid-column: 1 / -1;
  padding: 40px;
  border: 1px dashed var(--dn-border-strong);
  border-radius: var(--dn-r-lg);
  color: var(--dn-text-2);
  text-align: center;
}

/* Article ---------------------------------------------------------------- */
.dn-article-head {
  padding: clamp(32px, 4vw, 64px) 0 0;
  background:
    radial-gradient(900px 320px at 50% -60px, rgba(63, 111, 135, 0.09), transparent 70%),
    var(--dn-bg);
}
.dn-article-head__inner { max-width: 820px; }
.dn-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 36px;
  padding: 0 14px 0 10px;
  margin-bottom: 24px;
  border: 1px solid var(--dn-divider);
  border-radius: var(--dn-r-pill);
  background: var(--dn-surface);
  color: var(--dn-text-2);
  font-size: var(--dn-fs-label);
  font-weight: 550;
  text-decoration: none;
}
.dn-back .dn-icon { width: 16px; height: 16px; transition: transform var(--dn-dur) var(--dn-ease); }
.dn-back:hover { color: var(--dn-accent); border-color: var(--dn-accent-border); }
.dn-back:hover .dn-icon { transform: translateX(-3px); }

/* The SSR contract keeps class="hero-title" on the H1 */
.dn-article-head .hero-title {
  margin: 0;
  font-size: clamp(2rem, 1.4rem + 2.4vw, 3.25rem);
  font-weight: 650;
  line-height: 1.12;
  letter-spacing: var(--dn-tracking-display);
  color: var(--dn-text);
}
.dn-article-head .hero-title .highlight { color: var(--dn-accent); font-weight: inherit; }
.dn-article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
  margin: 20px 0 0;
  color: var(--dn-text-muted);
  font-size: var(--dn-fs-label);
}
.dn-article-meta .dn-icon { width: 16px; height: 16px; margin-right: 4px; }
.dn-article-meta > span { display: inline-flex; align-items: center; }

.dn-article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 48px;
  padding: 32px 0 clamp(56px, 6vw, 96px);
}
@media (min-width: 1140px) {
  .dn-article-layout.has-toc { grid-template-columns: 240px minmax(0, 720px); justify-content: start; column-gap: 64px; }
  .dn-article-layout.has-toc .dn-article-aside { order: -1; }
  .dn-article-layout.has-toc .dn-article-rail { grid-column: 2; }
}
/* Wide screens: contents | article | related column */
@media (min-width: 1280px) {
  .dn-article-layout { grid-template-columns: minmax(0, 1fr) 264px; column-gap: 56px; }
  .dn-article-layout.has-toc { grid-template-columns: 200px minmax(0, 1fr) 248px; column-gap: 40px; }
  .dn-article-layout .dn-article-rail,
  .dn-article-layout.has-toc .dn-article-rail { grid-column: auto; grid-template-columns: minmax(0, 1fr); align-self: stretch; }
  /* The rail stretches to the article's height so the app card can stay in view while reading */
  .dn-rail-card--app { position: sticky; top: calc(var(--dn-header-h) + 32px); }
}
/* Large screens: widen the article page so the side columns have real room */
/* Keep the left column clear of the fixed 48px ShareThis bar on the left edge */
@media (min-width: 1140px) {
  .dn-container--article,
  .dn-newsletter-slot--article .dn-container {
    --_max: calc(var(--dn-max) + var(--dn-gutter) * 2);
    padding-left: max(var(--dn-gutter), calc(72px - max(0px, (100vw - var(--_max)) / 2)));
  }
}
@media (min-width: 1440px) {
  .dn-container--article,
  .dn-newsletter-slot--article .dn-container { --_max: calc(1480px + var(--dn-gutter) * 2); max-width: var(--_max); }
  /* Scoped to the wide container so the side columns never squeeze the article */
  .dn-container--article .dn-article-layout .dn-article { max-width: 760px; }
  .dn-container--article .dn-article-layout { grid-template-columns: minmax(0, 760px) 300px; justify-content: space-between; }
  .dn-container--article .dn-article-layout.has-toc { grid-template-columns: 260px minmax(0, 760px) 300px; justify-content: space-between; column-gap: 48px; }
  .dn-container--article .dn-toc a { font-size: var(--dn-fs-sm); }
}
.dn-article-aside { display: none; }
@media (min-width: 1140px) { .dn-article-layout.has-toc .dn-article-aside { display: block; } }

/* Related column */
.dn-article-rail { display: grid; gap: 20px; align-content: start; }
.dn-article-rail:empty { display: none; }
@media (min-width: 720px) and (max-width: 1279.98px) {
  .dn-article-rail { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
.dn-rail-card {
  padding: 20px;
  border: 1px solid var(--dn-divider);
  border-radius: var(--dn-r-lg);
  background: var(--dn-surface);
}
.dn-rail-card__title {
  margin: 0 0 12px;
  font-size: var(--dn-fs-overline);
  font-weight: 650;
  letter-spacing: var(--dn-tracking-overline);
  text-transform: uppercase;
  color: var(--dn-text-muted);
}
.dn-rail-posts, .dn-rail-links { list-style: none; margin: 0; padding: 0; }
.dn-rail-posts li + li { border-top: 1px solid var(--dn-divider); }
.dn-rail-posts a { display: grid; gap: 4px; padding: 12px 0; text-decoration: none; }
.dn-rail-posts li:first-child a { padding-top: 0; }
.dn-rail-posts li:last-child a { padding-bottom: 0; }
.dn-rail-posts span {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  color: var(--dn-text);
  font-size: var(--dn-fs-sm);
  font-weight: 600;
  line-height: 1.4;
  transition: color var(--dn-dur) var(--dn-ease);
}
.dn-rail-posts a:hover span { color: var(--dn-accent); }
.dn-rail-posts time { color: var(--dn-text-muted); font-size: var(--dn-fs-label); }
.dn-rail-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 9px 0;
  color: var(--dn-text-2);
  font-size: var(--dn-fs-sm);
  text-decoration: none;
  transition: color var(--dn-dur) var(--dn-ease);
}
.dn-rail-links li + li a { border-top: 1px solid var(--dn-divider); }
.dn-rail-links li:first-child a { padding-top: 0; }
.dn-rail-links .dn-icon { width: 16px; height: 16px; flex: none; color: var(--dn-text-muted); }
.dn-rail-links a:hover { color: var(--dn-accent); }
.dn-rail-card__more { display: inline-flex; align-items: center; gap: 6px; margin-top: 14px; font-size: var(--dn-fs-sm); }
.dn-rail-card__more .dn-icon { width: 16px; height: 16px; }
.dn-rail-card--app { background: var(--dn-accent-subtle); border-color: var(--dn-accent-border); }
.dn-rail-card--app img { display: block; width: 34px; height: 40px; margin-bottom: 12px; }
.dn-rail-card--app h2 { margin: 0; font-size: 1rem; font-weight: 650; color: var(--dn-text); }
.dn-rail-card--app p { margin: 6px 0 16px; color: var(--dn-text-2); font-size: var(--dn-fs-sm); line-height: 1.5; }

.dn-article { max-width: 720px; }
.dn-article .blog-hero-media { margin: 0 0 40px; }
.dn-article .blog-hero-media img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--dn-r-xl);
  box-shadow: var(--dn-shadow-sm);
  background: var(--dn-surface-2);
}
.dn-article .blog-hero-media figcaption { margin-top: 10px; color: var(--dn-text-muted); font-size: var(--dn-fs-sm); text-align: center; }
.dn-article .blog-hero-media figcaption:empty { display: none; }

/* Content fragments: legacy utility classes, styled in-family */
.dn-prose .lead-quote { font-size: 1.1875rem; color: var(--dn-text); font-weight: 550; }
.dn-prose .note-list li { padding-left: 0.3em; }
.dn-prose .dn-info-box {
  padding: 18px 22px;
  border: 1px solid var(--dn-accent-border);
  border-radius: var(--dn-r-md);
  background: var(--dn-accent-subtle);
}
.dn-prose .step-image img { border-radius: var(--dn-r-md); }
.dn-prose section + section { margin-top: 2em; }
/* In-article app callout: keep its own check-list spacing over the generic .dn-prose list rules */
.dn-prose .dn-callout__bullets { padding-left: 0; margin: 0; }
.dn-prose .dn-callout__bullets li { padding-left: 30px; margin: 0; }
.dn-prose .dn-callout__kicker { display: flex; align-items: center; gap: 12px; }
.dn-prose .dn-callout__kicker img {
  flex: none;
  width: 34px;
  height: 40px;
  max-width: none;
  margin: 0;
  object-fit: contain;
  border-radius: 0;
  box-shadow: none;
}
.dn-prose .dn-callout__kicker .dn-callout__title { margin: 0; }

.dn-article-cta {
  display: grid;
  gap: 16px;
  margin-top: 56px;
  padding: 28px;
  border-radius: var(--dn-r-xl);
}
@media (min-width: 640px) { .dn-article-cta { grid-template-columns: minmax(0, 1fr) auto; align-items: center; } }
.dn-article-cta h2 { margin: 0; color: var(--dn-on-ink); font-size: 1.25rem; font-weight: 600; }
.dn-article-cta p { margin: 6px 0 0; color: var(--dn-on-ink-2); font-size: var(--dn-fs-sm); }

/* Keep exploring: a boxed set of described links */
.dn-related {
  margin-top: 32px;
  padding: 24px;
  border: 1px solid var(--dn-divider);
  border-radius: var(--dn-r-xl);
  background: var(--dn-surface);
}
.dn-related h2 { margin: 0 0 16px; font-size: var(--dn-fs-overline); font-weight: 650; letter-spacing: var(--dn-tracking-overline); text-transform: uppercase; color: var(--dn-text-muted); }
.dn-related__links { display: grid; grid-template-columns: minmax(0, 1fr); gap: 10px; }
@media (min-width: 560px) { .dn-related__links { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.dn-related__tile {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px;
  border: 1px solid var(--dn-divider);
  border-radius: var(--dn-r-lg);
  background: var(--dn-bg);
  text-decoration: none;
  transition: border-color var(--dn-dur) var(--dn-ease), background var(--dn-dur) var(--dn-ease), transform var(--dn-dur) var(--dn-ease);
}
.dn-related__tile:hover { border-color: var(--dn-accent-border); background: var(--dn-accent-subtle); transform: translateY(-1px); }
.dn-related__tile:focus-visible { outline: none; box-shadow: var(--dn-ring); }
.dn-related__tile .dn-icon-tile { flex: none; }
.dn-related__tile strong { display: block; color: var(--dn-text); font-size: var(--dn-fs-sm); font-weight: 650; }
.dn-related__tile small { display: block; margin-top: 2px; color: var(--dn-text-muted); font-size: var(--dn-fs-label); line-height: 1.4; }

/* Comments */
.dn-article .comments-section {
  margin-top: 24px;
  padding: 22px;
  border: 1px solid var(--dn-divider);
  border-radius: var(--dn-r-xl);
  background: var(--dn-surface);
  box-shadow: var(--dn-shadow-sm);
}
.comments-head { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; padding-bottom: 16px; border-bottom: 1px solid var(--dn-divider); }
.comments-head .dn-icon-tile { flex: none; }
.comments-head .dn-icon-tile { width: 44px; height: 44px; }
.comments-head .dn-icon-tile .dn-icon { width: 20px; height: 20px; }
.dn-article .comments-title { margin: 0; font-size: 1.125rem; font-weight: 650; color: var(--dn-text); }
.comments-head p { margin: 3px 0 0; color: var(--dn-text-2); font-size: var(--dn-fs-label); line-height: 1.45; }
@media (max-width: 559.98px) { .dn-related, .dn-article .comments-section { padding: 18px; } }
.dn-comment-form { display: grid; gap: 14px; }
.dn-comment-trap { position: absolute !important; left: -10000px !important; width: 1px; height: 1px; overflow: hidden; }
.dn-comment-fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.dn-comment-form label { display: grid; gap: 6px; color: var(--dn-text); font-size: var(--dn-fs-label); font-weight: 600; }
.dn-comment-form input, .dn-comment-form textarea { width: 100%; border: 1px solid var(--dn-divider); border-radius: 8px; background: var(--dn-surface); color: var(--dn-text); padding: 9px 12px; font: inherit; font-weight: 400; line-height: 1.45; }
.dn-comment-form input { min-height: 42px; }
.dn-comment-form textarea { min-height: 100px; resize: vertical; }
.dn-comment-form input:focus, .dn-comment-form textarea:focus { outline: none; border-color: var(--dn-accent); box-shadow: var(--dn-ring); }
.dn-comment-submit { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.dn-comment-submit button { border: 0; border-radius: 8px; padding: 10px 18px; background: var(--dn-text); color: var(--dn-surface); font: inherit; font-weight: 650; cursor: pointer; }
.dn-comment-submit button:disabled { opacity: .6; cursor: wait; }
.dn-comment-status { margin: 0; color: var(--dn-text-2); font-size: var(--dn-fs-sm); }
.dn-comment-status[data-error="true"] { color: #a42d24; }
.dn-comment-list { display: grid; gap: 12px; margin-top: 20px; }
.dn-comment { padding: 14px 0 0; border-top: 1px solid var(--dn-divider); }
.dn-comment__meta { display: flex; gap: 10px; align-items: baseline; color: var(--dn-text-muted); font-size: var(--dn-fs-label); }
.dn-comment__author { color: var(--dn-text); font-weight: 650; }
.dn-comment__body { margin: 8px 0 0; color: var(--dn-text-2); white-space: pre-wrap; overflow-wrap: anywhere; }
@media (max-width: 559.98px) { .dn-comment-fields { grid-template-columns: 1fr; } }

/* Newsletter under an article: same width as the article page, tight spacing above */
.dn-newsletter-slot--article .dn-newsletter { padding-top: 0; }
.dn-container--article .dn-article-layout { padding-bottom: clamp(40px, 4vw, 64px); }

@media (hover: none) and (pointer: coarse) { .dn-article-head .dn-back { min-height: 44px; } }

/* Fixed-size YouTube embeds in articles (560x315) scale to the column on phones */
.dn-prose iframe[width="560"] { max-width: 100%; height: auto; aspect-ratio: 16 / 9; }