/* Shared styles for the blog pages. The base rules (variables, masthead, footer) are copied from index.html; keep them in sync. */
:root {
  --paper: #FFFFFF;
  --paper-2: #F4F6FA;
  --surface: #FFFFFF;
  --ink: #0A1330;
  --muted: #4B5470;
  --rule: #DDE1EA;
  --mark-l: #011236;
  --navy: #011236;
  --navy-deep: #010C26;
  --cream: #FBF5EA;
  --cream-soft: rgba(251, 245, 234, 0.74);
  --cream-rule: rgba(251, 245, 234, 0.18);
  --blue: #0062FF;
  --link: #0050D4;

  --f-display: "Source Serif 4", "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --f-body: "Source Serif 4", "Iowan Old Style", Georgia, serif;
  --f-label: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --wrap: 1180px;
  color-scheme: light;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--f-body);
  font-size: 18px;
  line-height: 1.6;
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: ""; position: fixed; inset: 0 0 auto;
  height: env(safe-area-inset-top, 0px); z-index: 10; background: var(--paper);
}
a { color: var(--link); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; border-radius: 2px; }

.wrap {
  max-width: var(--wrap); margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}
@media (min-width: 720px) { .wrap { padding-left: max(40px, env(safe-area-inset-left, 0px)); padding-right: max(40px, env(safe-area-inset-right, 0px)); } }

.label {
  font-family: var(--f-label);
  font-variation-settings: "wdth" 112;
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
h1, h2, h3 { font-family: var(--f-display); font-weight: 400; text-wrap: balance; margin: 0; letter-spacing: -0.01em; }
p { margin: 0; }

/* ---------- Masthead ---------- */
.top { background: var(--paper); color: var(--ink); }
.utility { background: var(--navy); }
.utility .wrap { display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; padding-block: 9px; color: var(--cream-soft); }
.utility a { color: var(--cream-soft); text-decoration: none; }
.utility a:hover { color: var(--cream); }

.masthead { border-bottom: 1px solid var(--rule); }
.masthead .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 18px 32px; padding-block: 22px; }
.brand { display: flex; align-items: center; gap: 16px; color: var(--ink); text-decoration: none; }
.brand svg { width: 46px; height: auto; flex: none; }
.brand-text { display: grid; gap: 2px; }
.wordmark {
  font-family: var(--f-label); font-weight: 800; font-variation-settings: "wdth" 125;
  font-size: 24px; letter-spacing: 0.02em; line-height: 1;
}
.wordmark small { font-weight: 600; font-size: 11px; letter-spacing: 0.42em; margin-left: 10px; vertical-align: 3px; }
.brand-sub { font-family: var(--f-display); font-style: italic; font-size: 15px; color: var(--muted); }
nav.primary ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px 28px; }
nav.primary a { color: var(--ink); text-decoration: none; padding-block: 6px; border-bottom: 1px solid transparent; }
nav.primary a:hover { border-bottom-color: var(--blue); }
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--f-label); font-variation-settings: "wdth" 108; font-weight: 600; font-size: 14px; letter-spacing: 0.02em;
  padding: 13px 20px; text-decoration: none; border: 1px solid transparent; border-radius: 2px;
}
.btn-light { background: var(--navy); color: var(--cream); }
.btn-light:hover { background: var(--blue); }
.btn-ghost { color: var(--ink); border-color: var(--rule); }
.btn-ghost:hover { border-color: var(--ink); }
.btn .arrow { transition: transform .2s ease; }
.btn:hover .arrow { transform: translateX(3px); }
/* Footer */
footer { background: var(--navy-deep); color: var(--cream-soft); }
footer .wrap { padding-block: 48px 40px; display: grid; gap: 32px; }
.foot-top { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 24px 40px; align-items: center; }
footer nav ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px 24px; }
footer a { color: var(--cream-soft); text-decoration: none; }
footer a:hover { color: var(--cream); }
footer .brand { color: var(--cream); }
footer .brand-sub { color: var(--cream-soft); }
.foot-bottom { border-top: 1px solid var(--cream-rule); padding-top: 20px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 24px; font-size: 14px; }
body { margin: 0; }
img { max-width: 100%; }
nav.primary a[aria-current="page"] { border-bottom-color: var(--blue); }

/* ---------- Blog index ---------- */
.blog-head { border-bottom: 1px solid var(--rule); }
.blog-head .wrap { padding-block: 72px 56px; }
.blog-head .label { color: var(--muted); }
.blog-head h1 { margin-top: 18px; font-size: clamp(40px, 5.4vw, 68px); line-height: 1.05; letter-spacing: -0.02em; }
.blog-head .lede { margin-top: 22px; max-width: 36em; font-size: 20px; line-height: 1.55; color: var(--muted); }

.posts { list-style: none; margin: 0; padding: 0; }
.post-item { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 9fr); gap: 12px 40px; padding-block: 36px; border-bottom: 1px solid var(--rule); }
.post-item time { color: var(--muted); padding-top: 8px; }
.post-item h2 { font-size: clamp(26px, 3vw, 34px); line-height: 1.2; }
.post-item h2 a { color: var(--ink); text-decoration: none; }
.post-item h2 a:hover { text-decoration: underline; text-decoration-color: var(--blue); }
.post-item .excerpt { margin-top: 12px; max-width: 38em; color: var(--muted); }
.post-item .more { display: inline-block; margin-top: 16px; font-family: var(--f-label); font-size: 14px; font-weight: 600; text-decoration: none; }
.post-item .more:hover { text-decoration: underline; }
.blog-list { padding-block: 24px 96px; }

/* ---------- Article ---------- */
.article-head { border-bottom: 1px solid var(--rule); }
.article-head .wrap { padding-block: 64px 48px; }
.article-col { max-width: 42rem; margin: 0 auto; }
.crumb { color: var(--muted); display: flex; flex-wrap: wrap; gap: 6px 14px; }
.crumb a { color: var(--muted); text-decoration: none; }
.crumb a:hover { color: var(--ink); }
.crumb span + span::before, .crumb a + span::before { content: "·"; margin-right: 14px; color: var(--blue); }
.article-head h1 { margin-top: 22px; font-size: clamp(36px, 5vw, 56px); line-height: 1.08; letter-spacing: -0.02em; }
.article-head .dek { margin-top: 20px; font-size: 20px; line-height: 1.55; color: var(--muted); }

.prose { padding-block: 56px 88px; font-size: 19px; line-height: 1.7; }
.prose p { margin: 0 0 1.1em; }
.prose h2 { font-size: clamp(26px, 3vw, 32px); line-height: 1.2; margin: 1.8em 0 0.6em; }
.prose h3 { font-size: 23px; line-height: 1.3; margin: 1.6em 0 0.5em; }
.prose ol, .prose ul { margin: 0 0 1.1em; padding-left: 1.4em; }
.prose li { margin-bottom: 0.4em; }
.prose li::marker { font-family: var(--f-label); font-weight: 600; color: inherit; }
.prose strong { font-weight: 600; }
.prose hr { border: 0; border-top: 2px solid var(--ink); margin: 2.4em 0 1.4em; }
.prose hr ~ p:not(.back) { font-size: 16px; line-height: 1.6; color: var(--muted); }
.prose hr ~ p:not(.back) a { font-family: var(--f-mono); font-size: 14.5px; word-break: break-all; }
.back { margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--rule); }

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
  body { font-size: 17px; }
  .masthead .wrap { padding-block: 18px; }
  .utility .wrap { font-size: 11px; }
  nav.primary { width: 100%; }
  nav.primary ul { gap: 4px 12px; justify-content: space-between; }
  nav.primary .label, nav.primary a { font-size: 11px; letter-spacing: 0.12em; }
  .blog-head .wrap { padding-block: 44px 36px; }
  .blog-head .lede, .article-head .dek { font-size: 18px; }
  .post-item { grid-template-columns: minmax(0, 1fr); padding-block: 28px; }
  .post-item time { padding-top: 0; }
  .article-head .wrap { padding-block: 40px 32px; }
  .prose { padding-block: 40px 64px; font-size: 18px; }
}
@media (max-width: 480px) {
  nav.primary ul { gap: 4px 8px; }
  nav.primary .label, nav.primary a { font-size: 10.5px; letter-spacing: 0.06em; }
}