/* Bold Tech · neutral static blog
   Shared stylesheet for index + article pages. */

:root {
  --paper: oklch(0.99 0 0);
  --paper-raise: oklch(0.97 0 0);
  --ink: oklch(0.26 0 0);
  --ink-soft: oklch(0.45 0 0);
  --ink-faint: oklch(0.62 0 0);
  --rule: oklch(0.9 0 0);

  --font-body: "Hanken Grotesk", "Helvetica Neue", system-ui, sans-serif;
  --font-mono: "Spline Sans Mono", "JetBrains Mono", ui-monospace, monospace;

  --measure: 34rem;
  --measure-wide: 44rem;
  --gutter: clamp(1.25rem, 5vw, 3rem);
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: clamp(1.0625rem, 0.98rem + 0.4vw, 1.1875rem);
  line-height: 1.6;
  font-feature-settings: "kern", "liga";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--ink);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
  text-decoration-color: color-mix(in oklch, var(--ink) 35%, transparent);
  transition: text-decoration-color 0.2s ease;
}
a:hover {
  text-decoration-color: var(--ink);
}

/* ── Masthead ─────────────────────────────────────────────── */
.masthead {
  border-bottom: 1px solid var(--rule);
  padding: clamp(1.75rem, 5vw, 3rem) var(--gutter) clamp(1.25rem, 4vw, 2rem);
}
.masthead__row {
  max-width: 64rem;
  margin: 0 auto;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.brand {
  display: inline-flex;
  align-items: center;
  line-height: 1;
  color: var(--ink);
  text-decoration: none;
}
.brand__logo {
  display: block;
  height: clamp(1.7rem, 1.45rem + 1vw, 2.3rem);
  mix-blend-mode: multiply;
  width: auto;
}
.brand__mark {
  font-weight: 500;
  color: var(--ink-soft);
}
.masthead__tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0;
}

/* ── Page wrapper ─────────────────────────────────────────── */
.page {
  max-width: 64rem;
  margin: 0 auto;
  padding: clamp(2.5rem, 7vw, 5rem) var(--gutter);
}

/* ── Index: lead ──────────────────────────────────────────── */
.lead {
  max-width: var(--measure-wide);
  margin: 0 0 clamp(3rem, 8vw, 5rem);
}
.lead__kicker {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 1rem;
}
.lead__title {
  font-weight: 600;
  font-size: clamp(1.8rem, 1.3rem + 2.2vw, 2.6rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
}
.lead__title em {
  font-style: italic;
  font-weight: 500;
  color: var(--ink-soft);
}
.lead__brand {
  font-style: italic;
  font-weight: 500;
  color: var(--ink-soft);
}
.lead__dek {
  font-size: 1.1rem;
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: 38rem;
  margin: 0;
}

/* ── Index: article list ──────────────────────────────────── */
.list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--rule);
}
.list__item {
  border-bottom: 1px solid var(--rule);
}
.entry {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 1rem 2rem;
  padding: clamp(1.4rem, 4vw, 2.2rem) 0;
  text-decoration: none;
  color: inherit;
  transition: padding-left 0.2s ease;
}
.entry:hover {
  padding-left: 0.5rem;
}
.entry__main {
  min-width: 0;
}
.entry__title {
  font-weight: 600;
  font-size: clamp(1.2rem, 1.05rem + 0.8vw, 1.5rem);
  line-height: 1.25;
  letter-spacing: -0.012em;
  margin: 0 0 0.5rem;
  color: var(--ink);
}
.entry__excerpt {
  color: var(--ink-soft);
  font-size: 0.95rem;
  line-height: 1.5;
  margin: 0 0 0.55rem;
}
.entry__meta {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.entry__date {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
  white-space: nowrap;
}

/* ── Article ──────────────────────────────────────────────── */
.article__head {
  max-width: var(--measure-wide);
  margin: 0 0 clamp(2.5rem, 6vw, 3.5rem);
}
.article__kicker {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 1rem;
}
.article__title {
  font-weight: 600;
  font-size: clamp(1.8rem, 1.2rem + 2.6vw, 2.9rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 1.4rem;
}
.article__title em {
  font-style: italic;
  font-weight: 500;
  color: var(--ink-soft);
}
.article__byline {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
  border-top: 1px solid var(--rule);
  padding-top: 1.1rem;
}
.article__byline strong {
  color: var(--ink-soft);
  font-weight: 600;
}

.prose {
  max-width: var(--measure);
}
.prose > * + * {
  margin-top: 1.4em;
}
.prose p {
  margin: 0;
}
.prose__lede {
  font-size: 1.18rem;
  line-height: 1.5;
  font-weight: 500;
  color: var(--ink);
}
.prose > .prose__break {
  margin-top: 2.6em;
}
.prose h2 {
  font-weight: 600;
  font-size: 1.3rem;
  line-height: 1.25;
  letter-spacing: -0.012em;
  margin: 2.2em 0 0.4em;
  color: var(--ink);
}

/* numbered list */
.prose ol {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: point;
}
.prose ol > li {
  counter-increment: point;
  position: relative;
  padding-left: 2.6rem;
  margin-top: 1.4em;
}
.prose ol > li::before {
  content: counter(point, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.1em;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--ink-faint);
}
.prose ul {
  list-style: none;
  margin: 0.6em 0 0;
  padding: 0;
}
.prose ul > li {
  position: relative;
  padding-left: 1.1rem;
  margin-top: 0.45em;
  color: var(--ink-soft);
}
.prose ul > li::before {
  content: "·";
  position: absolute;
  left: 0;
  color: var(--ink-faint);
}

.prose blockquote {
  margin: 1.8em 0;
  padding: 0 0 0 1.25rem;
  border-left: 2px solid var(--rule);
  font-size: 1.08rem;
  line-height: 1.5;
  color: var(--ink-soft);
}

/* code block */
.prose pre {
  margin: 2em 0;
  background: var(--paper-raise);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: clamp(1.1rem, 3vw, 1.4rem);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  line-height: 1.6;
  color: var(--ink);
  max-width: var(--measure-wide);
}
.prose pre code {
  font: inherit;
  background: none;
  padding: 0;
  color: inherit;
  display: block;
  white-space: pre;
}
.prose code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--paper-raise);
  padding: 0.1em 0.35em;
  border-radius: 3px;
}
.prose pre .c {
  color: var(--ink-faint);
}

/* ── Article foot ─────────────────────────────────────────── */
.article__foot {
  max-width: var(--measure);
  margin-top: clamp(3rem, 7vw, 4.5rem);
  padding-top: 1.6rem;
  border-top: 1px solid var(--rule);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
}
.back-link {
  text-decoration: none;
  color: var(--ink-soft);
}
.back-link:hover {
  color: var(--ink);
}

/* ── Colophon ─────────────────────────────────────────────── */
.colophon {
  border-top: 1px solid var(--rule);
  margin-top: clamp(3rem, 8vw, 5rem);
  padding: clamp(1.5rem, 4vw, 2.25rem) var(--gutter);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.colophon__inner {
  max-width: 64rem;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

@media (max-width: 36rem) {
  .entry {
    grid-template-columns: 1fr;
  }
  .entry__date {
    order: -1;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}