:root {
  --paper: oklch(97% 0.012 75);
  --paper-raised: oklch(93.5% 0.02 72);
  --paper-deep: oklch(90% 0.025 68);
  --ink: oklch(24% 0.03 50);
  --ink-soft: oklch(42% 0.025 52);
  --ink-faint: oklch(58% 0.02 55);
  --line: oklch(85% 0.02 68);
  --line-strong: oklch(74% 0.03 60);
  --rust: oklch(56% 0.17 35);
  --rust-deep: oklch(45% 0.16 32);
  --rust-pale: oklch(93% 0.05 40);
  --moss: oklch(50% 0.08 148);
  --cream-card: oklch(98.5% 0.008 80);
  --font-display: "Fraunces", ui-serif, Georgia, serif;
  --font-body: "Karla", ui-sans-serif, system-ui, sans-serif;
  --fs-900: clamp(2.1rem, 1.5rem + 2.6vw, 3.5rem);
  --fs-800: clamp(1.65rem, 1.3rem + 1.6vw, 2.4rem);
  --fs-700: clamp(1.35rem, 1.15rem + 0.9vw, 1.75rem);
  --fs-600: clamp(1.15rem, 1.05rem + 0.4vw, 1.35rem);
  --fs-400: 1rem;
  --fs-300: 0.9rem;
  --space-md: clamp(1.5rem, 1.2rem + 1vw, 2.25rem);
  --space-lg: clamp(2.5rem, 1.8rem + 2vw, 4rem);
  --space-xl: clamp(3.5rem, 2.5rem + 3vw, 6rem);
  --max: 72rem;
}

html[data-theme="ink"] {
  --paper: oklch(18% 0.02 50);
  --paper-raised: oklch(22% 0.02 50);
  --paper-deep: oklch(15% 0.02 50);
  --ink: oklch(94% 0.01 75);
  --ink-soft: oklch(78% 0.015 70);
  --ink-faint: oklch(62% 0.015 65);
  --line: oklch(30% 0.02 50);
  --line-strong: oklch(42% 0.025 50);
  --cream-card: oklch(22% 0.02 50);
  --rust-pale: oklch(28% 0.06 40);
}

html[data-theme="stone"] {
  --paper: oklch(94% 0.01 100);
  --paper-raised: oklch(91% 0.012 100);
  --paper-deep: oklch(88% 0.014 95);
  --ink: oklch(22% 0.02 80);
  --ink-soft: oklch(40% 0.02 80);
  --ink-faint: oklch(55% 0.015 80);
  --line: oklch(82% 0.015 95);
  --line-strong: oklch(70% 0.02 90);
  --cream-card: oklch(97% 0.008 100);
}

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--fs-400);
  line-height: 1.55;
  color: var(--ink);
  background: var(--paper);
}

img { max-width: 100%; height: auto; }

a { color: var(--rust-deep); }
a:hover { color: var(--rust); }

.container {
  width: min(100% - 2.5rem, var(--max));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in oklab, var(--paper) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4rem;
  flex-wrap: wrap;
}

.wordmark { display: inline-flex; align-items: center; text-decoration: none; }
.wordmark-img { height: 1.55rem; width: auto; }
html[data-theme="ink"] .wordmark-img { filter: invert(1) hue-rotate(180deg) brightness(1.1); }

.nav-links {
  display: flex;
  gap: 1.15rem;
  list-style: none;
  padding: 0;
  margin: 0;
  flex-wrap: wrap;
}

.nav-links a {
  text-decoration: none;
  color: var(--ink-soft);
  font-size: var(--fs-300);
  font-weight: 500;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] { color: var(--ink); }

.nav-actions { display: flex; align-items: center; gap: 0.75rem; }

.theme-toggle {
  display: inline-flex;
  padding: 3px;
  border-radius: 10px;
  background: var(--paper-deep);
  gap: 2px;
}

.theme-toggle button {
  border: 1.5px solid transparent;
  background: transparent;
  color: var(--ink-soft);
  font: inherit;
  font-size: 0.78rem;
  padding: 0.35rem 0.55rem;
  border-radius: 8px;
  cursor: pointer;
}

.theme-toggle button[aria-pressed="true"] {
  background: var(--paper-raised);
  border-color: var(--rust);
  color: var(--ink);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--fs-300);
  text-decoration: none;
  border-radius: 3px;
  padding: 0.7em 1.1em;
  border: 1.5px solid transparent;
  cursor: pointer;
}

.btn-primary {
  background: var(--rust);
  color: oklch(98% 0.01 75);
  border-color: var(--rust);
}

.btn-primary:hover { background: var(--rust-deep); border-color: var(--rust-deep); }

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-strong);
}

.btn-ghost:hover { border-color: var(--ink-soft); }

.page-main { padding-block: var(--space-xl) var(--space-lg); }

.eyebrow {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 0.75rem;
}

.page-main h1 {
  font-family: var(--font-display);
  font-size: var(--fs-900);
  font-weight: 500;
  line-height: 1.1;
  margin: 0 0 1rem;
}

.lede {
  font-size: var(--fs-600);
  color: var(--ink-soft);
  max-width: 40rem;
  margin: 0 0 var(--space-md);
}

.prose { max-width: 42rem; }
.prose h2 {
  font-family: var(--font-display);
  font-size: var(--fs-700);
  font-weight: 500;
  margin: var(--space-md) 0 0.75rem;
}
.prose h3 {
  font-family: var(--font-display);
  font-size: var(--fs-600);
  font-weight: 500;
  margin: 1.5rem 0 0.5rem;
}
.prose p,
.prose li { color: var(--ink-soft); }
.prose ul { padding-left: 1.2rem; }
.prose li + li { margin-top: 0.35rem; }

.changelog-entry {
  border-top: 1px solid var(--line);
  padding: var(--space-md) 0;
}

.changelog-entry:first-of-type { border-top: 0; }

.changelog-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  align-items: baseline;
  margin-bottom: 0.65rem;
}

.changelog-date {
  font-variant-numeric: tabular-nums;
  color: var(--ink-faint);
  font-size: var(--fs-300);
}

.changelog-entry h2 {
  font-family: var(--font-display);
  font-size: var(--fs-700);
  font-weight: 500;
  margin: 0;
}

.tag {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.2em 0.55em;
  border-radius: 999px;
  background: var(--rust-pale);
  color: var(--rust-deep);
}

.changelog-entry ul {
  margin: 0.75rem 0 0;
  padding-left: 1.2rem;
  color: var(--ink-soft);
}

.changelog-entry li + li { margin-top: 0.35rem; }

.feed-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 0.5rem;
  font-size: var(--fs-300);
  font-weight: 600;
  text-decoration: none;
  color: var(--rust-deep);
}

.site-footer {
  padding-block: var(--space-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  border-top: 1px solid var(--line);
  font-size: var(--fs-300);
  color: var(--ink-faint);
}

.site-footer .footer-mark {
  height: 1.05rem;
  width: auto;
  vertical-align: -0.12em;
  margin-right: 0.45em;
}

html[data-theme="ink"] .footer-mark { filter: invert(1) hue-rotate(180deg) brightness(1.1); }

.footer-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  padding: 0;
  margin: 0;
  flex-wrap: wrap;
}

.footer-links a {
  text-decoration: none;
  color: var(--ink-faint);
}

.footer-links a:hover { color: var(--ink); }

@media (max-width: 720px) {
  .nav-links { width: 100%; }
}