/* ---------- Design tokens ---------- */
:root {
  --color-bg: #faf8f4;
  --color-surface: #ffffff;
  --color-text: #22262b;
  --color-text-muted: #5b6570;
  --color-border: #e6e0d4;
  --color-primary: #1f5f5b;
  --color-primary-dark: #143f3c;
  --color-accent: #c96f36;
  --color-accent-soft: #f5e6d8;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial,
    sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  --measure: 42rem;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(20, 20, 20, 0.04), 0 4px 16px rgba(20, 20, 20, 0.06);
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #14171a;
    --color-surface: #1c2023;
    --color-text: #eceae6;
    --color-text-muted: #a3aab0;
    --color-border: #2c3136;
    --color-primary: #6fbcb6;
    --color-primary-dark: #8fd0ca;
    --color-accent: #e2985e;
    --color-accent-soft: #362b21;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 4px 16px rgba(0, 0, 0, 0.4);
  }
}

/* ---------- Reset ---------- */
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  line-height: 1.6;
  font-size: 17px;
}
img { max-width: 100%; display: block; }
a { color: var(--color-primary-dark); text-decoration-thickness: 1.5px; text-underline-offset: 2px; }
a:hover { color: var(--color-accent); }
h1, h2, h3 { line-height: 1.2; font-weight: 700; }
.wrap { max-width: 64rem; margin: 0 auto; padding: 0 1.5rem; }
.section { padding: 3rem 1.5rem; }
.muted { color: var(--color-text-muted); }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: -9999px; top: 0; background: var(--color-primary);
  color: #fff; padding: 0.75rem 1rem; z-index: 100;
}
.skip-link:focus { left: 0.5rem; top: 0.5rem; border-radius: 6px; }

/* ---------- Header ---------- */
.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  gap: 1rem;
}
.site-header__brand {
  display: flex;
  flex-direction: column;
  color: var(--color-text);
  text-decoration: none;
  line-height: 1.25;
}
.site-header__name { font-weight: 700; font-size: 1.15rem; }
.site-header__tagline { font-size: 0.85rem; color: var(--color-text-muted); }

.site-nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface);
  cursor: pointer;
}
.site-nav__toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 0 auto;
  background: var(--color-text);
}

.site-nav__list {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.site-nav__list a {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
}
.site-nav__list a:hover,
.site-nav__list a[aria-current="page"] {
  color: var(--color-primary-dark);
}

@media (max-width: 640px) {
  .site-nav__toggle { display: flex; }
  .site-nav__list {
    display: none;
    position: absolute;
    left: 0; right: 0;
    top: 100%;
    flex-direction: column;
    gap: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 0.5rem 1.5rem 1rem;
  }
  .site-nav__list.is-open { display: flex; }
  .site-nav__list li { padding: 0.5rem 0; border-bottom: 1px solid var(--color-border); }
  .site-header { position: relative; }
}

/* ---------- Hero ---------- */
.hero { padding: 3.5rem 1.5rem 2.5rem; max-width: 44rem; }
.hero__eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  margin: 0 0 0.5rem;
}
.hero h1 { font-size: clamp(1.8rem, 4vw, 2.4rem); margin: 0 0 1rem; }
.hero__lede { font-size: 1.05rem; color: var(--color-text-muted); max-width: var(--measure); }

/* ---------- Cards ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}
.card h3 { margin-top: 0; }
.card__link { display: inline-block; margin-top: 0.75rem; font-weight: 600; text-decoration: none; }

/* ---------- Section heading row ---------- */
.section__heading-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
}
.section__heading-row a { font-weight: 600; text-decoration: none; white-space: nowrap; }

/* ---------- Post list ---------- */
.post-list { list-style: none; margin: 1.5rem 0 0; padding: 0; }
.post-list__item {
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--color-border);
}
.post-list__item:first-child { padding-top: 0; }
.post-list__title { font-size: 1.1rem; font-weight: 600; text-decoration: none; }
.post-list__date { display: block; font-size: 0.85rem; color: var(--color-text-muted); margin-top: 0.15rem; }
.post-list__summary { margin: 0.5rem 0 0; color: var(--color-text-muted); }

/* ---------- Post / prose ---------- */
.prose { max-width: var(--measure); }
.prose p, .prose ul, .prose ol { max-width: var(--measure); }
.post__back { margin-bottom: 0.5rem; }
.post__back a { text-decoration: none; font-weight: 600; font-size: 0.9rem; }
.post__header { margin-bottom: 1.5rem; }
.post__meta { color: var(--color-text-muted); font-size: 0.9rem; }
.post h1 { font-size: clamp(1.6rem, 4vw, 2.1rem); }

/* ---------- Badge ---------- */
.badge {
  display: inline-block;
  background: var(--color-accent-soft);
  color: var(--color-accent);
  border-radius: 999px;
  padding: 0.25rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.75rem;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--color-border);
  margin-top: 3rem;
  padding: 2rem 0;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}
.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
}
.social-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin: 0;
  padding: 0;
}
.social-list a { text-decoration: none; color: var(--color-text-muted); font-weight: 500; }
.social-list a:hover { color: var(--color-primary-dark); }