/* H2 Pure Life — Blog
 * Page-specific styles for the /blog/ landing page and individual cornerstone posts.
 * Uses tokens defined in base.css. Loaded after base/nav/footer.
 */

/* =====================================================================
   SHARED — body padding to clear sticky nav, animation entry, etc.
   ===================================================================== */

.blog-page-wrap {
  padding-top: clamp(28px, 4vw, 48px);
}

/* Tiny entry animation for blog text and images */
.fade-up {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 600ms var(--ease), transform 600ms var(--ease);
}
.fade-up.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .fade-up { opacity: 1; transform: none; transition: none; }
}

/* =====================================================================
   BLOG INDEX (LANDING PAGE)
   ===================================================================== */

.blog-index-header {
  max-width: 760px;
  margin: 0 auto;
  padding: clamp(12px, 2vw, 24px) var(--gutter) clamp(40px, 5vw, 64px);
  text-align: center;
}
.blog-index-header .eyebrow { margin-bottom: 22px; }
.blog-index-header h1 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  line-height: 1.1;
  color: var(--ink);
  letter-spacing: -0.015em;
  margin: 0 0 24px;
}
.blog-index-header h1 em { font-style: italic; color: var(--teal-readable); }
.blog-index-header__sub {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 300;
  font-size: clamp(1.05rem, 1.7vw, 1.25rem);
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: 600px;
  margin: 0 auto;
}

.blog-grid-section {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter) clamp(80px, 10vw, 120px);
}
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 2.5vw, 32px);
}
.blog-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  transition: border-color var(--tx) var(--ease), transform var(--tx) var(--ease), box-shadow var(--tx) var(--ease);
}
.blog-card:hover {
  border-color: var(--teal-deep);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(10,31,31,0.08);
  color: inherit;
}
.blog-card__image-wrap {
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--dark);
}
.blog-card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 600ms var(--ease);
}
.blog-card:hover .blog-card__image { transform: scale(1.04); }
.blog-card__body {
  padding: clamp(20px, 2.5vw, 28px);
  flex: 1;
  display: flex;
  flex-direction: column;
}
.blog-card__eyebrow {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal-readable);
  margin: 0 0 12px;
}
.blog-card__title {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(1.2rem, 1.8vw, 1.5rem);
  line-height: 1.25;
  color: var(--ink);
  letter-spacing: -0.005em;
  margin: 0 0 12px;
}
.blog-card__blurb {
  font-family: var(--font-sans);
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--ink-soft);
  margin: 0 0 18px;
  flex: 1;
}
.blog-card__meta {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--ink-mute);
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

@media (max-width: 980px) {
  .blog-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .blog-grid { grid-template-columns: 1fr; gap: 20px; }
}

/* =====================================================================
   ARTICLE PAGE
   ===================================================================== */

.article-wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* Article header (above hero) */
.article-header {
  text-align: center;
  padding: clamp(12px, 2vw, 24px) 0 clamp(36px, 5vw, 56px);
}
.article-header .eyebrow { margin-bottom: 22px; }
.article-header h1 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.1;
  color: var(--ink);
  letter-spacing: -0.015em;
  margin: 0 0 32px;
}
.article-header h1 em { font-style: italic; color: var(--teal-readable); }
.article-meta {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--ink-mute);
}
.article-meta .meta-byline {
  font-weight: 500;
  color: var(--ink);
}
.article-meta .meta-sep {
  color: var(--ink-mute);
  opacity: 0.6;
}

/* Hero image — wider than article body, contained inside container-wide */
.article-hero {
  max-width: var(--container-wide);
  margin: 0 auto clamp(40px, 6vw, 64px);
  padding: 0 var(--gutter);
}
.article-hero__inner {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--dark);
  box-shadow: 0 24px 60px -20px rgba(10, 31, 31, 0.18);
}
.article-hero__img {
  width: 100%;
  height: auto;
  aspect-ratio: 21 / 9;
  object-fit: cover;
  display: block;
}
@media (max-width: 640px) {
  .article-hero__img { aspect-ratio: 16 / 9; }
  .article-hero { padding: 0; border-radius: 0; }
  .article-hero__inner { border-radius: 0; }
}

/* Article body — typography for the long-form copy */
.article-body {
  font-family: var(--font-sans);
  font-size: 1.075rem;
  line-height: 1.75;
  color: var(--ink);
  padding-bottom: clamp(48px, 6vw, 72px);
}
.article-body .lead {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(1.3rem, 2.4vw, 1.7rem);
  line-height: 1.4;
  color: var(--ink);
  margin: 0 0 36px;
}
.article-body p {
  margin: 0 0 1.3em;
  color: var(--ink);
}
.article-body h2 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(1.7rem, 3.2vw, 2.2rem);
  line-height: 1.2;
  color: var(--ink);
  letter-spacing: -0.005em;
  margin: clamp(36px, 5vw, 56px) 0 22px;
}
.article-body h2 em { font-style: italic; color: var(--teal-readable); }
.article-body h3 {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(1.3rem, 2.2vw, 1.55rem);
  line-height: 1.25;
  color: var(--ink);
  margin: clamp(28px, 4vw, 40px) 0 16px;
}
.article-body strong { color: var(--ink); font-weight: 600; }
.article-body em { color: var(--teal-readable); font-style: italic; }
.article-body a {
  color: var(--teal-readable);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--tx) var(--ease);
}
.article-body a:hover { color: var(--teal-deep); }
.article-body ul, .article-body ol {
  margin: 0 0 1.5em;
  padding-left: 1.4em;
}
.article-body li { margin-bottom: 0.6em; }
.article-body hr {
  border: 0;
  height: 1px;
  background: var(--line);
  margin: clamp(32px, 4vw, 48px) 0;
}

/* Pull quote inside an article */
.article-body .pull-quote {
  margin: clamp(36px, 5vw, 56px) 0;
  padding: clamp(24px, 3vw, 32px);
  background: rgba(0, 230, 204, 0.06);
  border-left: 3px solid var(--teal);
  border-radius: 0 var(--radius) var(--radius) 0;
}
.article-body .pull-quote p {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  line-height: 1.4;
  color: var(--ink);
  margin: 0;
}
.article-body .pull-quote .attribution {
  font-family: var(--font-sans);
  font-style: normal;
  font-weight: 500;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  color: var(--ink-mute);
  margin: 14px 0 0;
}

/* Study highlight box */
.article-body .study-highlight {
  margin: 22px 0;
  padding: 20px 24px;
  background: var(--cream-2);
  border-radius: var(--radius);
  font-size: 1rem;
  line-height: 1.65;
}
.article-body .study-highlight strong {
  display: block;
  font-family: var(--font-sans);
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 8px;
}
.article-body .study-highlight strong em {
  font-weight: 500;
  color: var(--ink-soft);
}

/* Inline portrait box (Phil intro on post #1, etc.) */
.article-body .inline-portrait {
  display: flex;
  align-items: center;
  gap: 18px;
  margin: clamp(36px, 5vw, 48px) 0;
  padding: 20px;
  background: var(--cream-2);
  border-radius: var(--radius);
}
.article-body .inline-portrait img {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}
.article-body .inline-portrait-text strong {
  display: block;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink);
}
.article-body .inline-portrait-text {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--ink-mute);
  line-height: 1.5;
}

/* Selectivity diagram (post #2) */
.article-body .diagram-figure {
  margin: clamp(32px, 4vw, 48px) 0;
  text-align: center;
}
.article-body .diagram-figure svg {
  max-width: 100%;
  height: auto;
}
.article-body .diagram-figure figcaption {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--ink-mute);
  margin-top: 14px;
  font-style: italic;
}

/* Byline footer — name and role at end of article */
.byline-footer {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: clamp(28px, 4vw, 36px) 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin: clamp(32px, 5vw, 48px) 0 clamp(24px, 3vw, 32px);
}
.byline-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--dark);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 500;
  flex-shrink: 0;
}
.byline-text {
  font-family: var(--font-sans);
}
.byline-name {
  font-weight: 600;
  font-size: 1rem;
  color: var(--ink);
}
.byline-role {
  font-size: 0.85rem;
  color: var(--ink-mute);
  letter-spacing: 0.01em;
}

/* End of post CTA */
.end-cta {
  text-align: center;
  margin: clamp(32px, 5vw, 48px) 0 clamp(56px, 8vw, 80px);
}
.end-cta a {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--teal-readable);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: gap var(--tx) var(--ease), color var(--tx) var(--ease);
}
.end-cta a:hover { gap: 14px; color: var(--teal-deep); }
.end-cta a .arrow { transition: transform var(--tx) var(--ease); }
.end-cta a:hover .arrow { transform: translateX(2px); }

/* =====================================================================
   RELATED POSTS STRIP (bottom of every article)
   ===================================================================== */

.related-section {
  background: var(--cream);
  padding: clamp(56px, 8vw, 88px) 0;
}
.related-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.related-eyebrow {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal-readable);
  margin: 0 0 16px;
  text-align: center;
}
.related-heading {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  line-height: 1.2;
  color: var(--ink);
  margin: 0 0 clamp(36px, 5vw, 56px);
  text-align: center;
}
.related-heading em { font-style: italic; color: var(--teal-readable); }

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 2.5vw, 28px);
}
.related-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  transition: border-color var(--tx) var(--ease), transform var(--tx) var(--ease), box-shadow var(--tx) var(--ease);
}
.related-card:hover {
  border-color: var(--teal-deep);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(10,31,31,0.08);
  color: inherit;
}
.related-card-image {
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--dark);
}
.related-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.related-card-body {
  padding: 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.related-card-eyebrow {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal-readable);
  margin: 0 0 10px;
}
.related-card h3 {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 1.15rem;
  line-height: 1.25;
  color: var(--ink);
  margin: 0 0 10px;
}
.related-card p {
  font-family: var(--font-sans);
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--ink-soft);
  margin: 0 0 14px;
  flex: 1;
}
.related-card-meta {
  font-family: var(--font-sans);
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--ink-mute);
  margin-top: auto;
}

@media (max-width: 980px) {
  .related-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .related-grid { grid-template-columns: 1fr; }
}