/* gabe.work — minimal typographic professional site.
   Zero dependencies, no build, no JS. Edit content in index.html.
   Design rules live in PRINCIPLES.md. */

:root {
  --ink:        #18181b;   /* primary text */
  --ink-soft:   #52525b;   /* secondary text */
  --ink-faint:  #71717a;   /* labels, meta — AA contrast on --bg (~4.7:1) */
  --bg:         #fafaf8;   /* warm paper */
  --bg-card:    #ffffff;
  --rule:       #e7e5e0;   /* hairlines */
  --accent:     #c2410c;   /* ember — the single accent */
  --accent-ink: #9a3412;

  --font-serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
  --font-sans:  ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono:  ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;

  --measure: 64ch;
  --gutter: clamp(1.25rem, 5vw, 4rem);
  --section-gap: clamp(4rem, 9vw, 7.5rem);
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink:       #ececec;
    --ink-soft:  #b4b4b8;
    --ink-faint: #8b8b93;   /* AA contrast on dark --bg (~5.3:1) */
    --bg:        #161617;
    --bg-card:   #1e1e20;
    --rule:      #2c2c2f;
    --accent:    #fb923c;
    --accent-ink:#fdba74;
  }
}

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(1rem, 0.95rem + 0.3vw, 1.125rem);
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: var(--accent); color: #fff; }

a { color: inherit; text-decoration-color: var(--ink-faint); text-underline-offset: 0.18em; }
a:hover { text-decoration-color: var(--accent); color: var(--accent-ink); }

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--accent); color: #fff; padding: 0.6rem 1rem; z-index: 100;
}
.skip-link:focus { left: 0.5rem; top: 0.5rem; border-radius: 4px; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }

/* ---- layout shell ---- */
.site-header, main, .site-footer { max-width: 76rem; margin-inline: auto; padding-inline: var(--gutter); }

/* ---- nav ---- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--rule);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; min-height: 3.75rem; flex-wrap: wrap;
}
.nav__brand {
  font-family: var(--font-serif); font-weight: 600; font-size: 1.15rem;
  letter-spacing: -0.01em; text-decoration: none;
}
.nav__links {
  display: flex; align-items: center; gap: clamp(0.75rem, 2.5vw, 1.6rem);
  list-style: none; margin: 0; padding: 0;
  font-size: 0.9rem;
}
.nav__links a { text-decoration: none; color: var(--ink-soft); }
.nav__links a:hover { color: var(--accent-ink); }
.nav__resume {
  border: 1px solid var(--rule); border-radius: 999px; padding: 0.3rem 0.85rem;
  color: var(--ink) !important;
}
.nav__resume:hover { border-color: var(--accent); }

/* ---- hero ---- */
.hero { padding-top: clamp(3.5rem, 9vw, 7rem); padding-bottom: var(--section-gap); }
.eyebrow {
  font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--accent); margin: 0 0 1.25rem;
}
.hero__title {
  font-family: var(--font-serif); font-weight: 600;
  font-size: clamp(2.1rem, 1.3rem + 4.4vw, 4.25rem);
  line-height: 1.05; letter-spacing: -0.02em;
  margin: 0; max-width: 18ch; text-wrap: balance;
}
.hero__lede {
  margin: 1.75rem 0 0; max-width: var(--measure);
  font-size: clamp(1.1rem, 1rem + 0.5vw, 1.3rem); color: var(--ink-soft);
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 2.25rem; }

.btn {
  display: inline-flex; align-items: center; gap: 0.4rem;
  font-size: 0.95rem; font-weight: 500; text-decoration: none;
  padding: 0.65rem 1.2rem; border-radius: 999px;
  border: 1px solid var(--rule); color: var(--ink);
  transition: border-color 0.15s, background 0.15s, color 0.15s;
}
.btn:hover { border-color: var(--accent); color: var(--accent-ink); }
.btn--primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn--primary:hover { background: var(--accent-ink); border-color: var(--accent-ink); color: #fff; }

/* ---- sections ---- */
.section { padding-block: var(--section-gap); border-top: 1px solid var(--rule); }
.section__label {
  font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-faint); margin: 0 0 2.5rem;
}

/* ---- impact grid ---- */
.impact-grid {
  list-style: none; margin: 0; padding: 0;
  display: grid; gap: 1px; background: var(--rule);
  border: 1px solid var(--rule); border-radius: 14px; overflow: hidden;
  grid-template-columns: repeat(2, 1fr);
}
@media (min-width: 60rem) { .impact-grid { grid-template-columns: repeat(4, 1fr); } }
.impact-card {
  background: var(--bg-card); padding: 1.5rem 1.4rem;
  display: flex; flex-direction: column; gap: 0.6rem;
}
.impact-card__stat {
  font-family: var(--font-serif); font-weight: 600;
  font-size: clamp(1.5rem, 1.1rem + 1.6vw, 2.1rem);
  letter-spacing: -0.02em; color: var(--ink); line-height: 1.05;
}
.impact-card__body { margin: 0; font-size: 0.95rem; color: var(--ink-soft); line-height: 1.45; }
.impact-card__src {
  margin-top: auto; font-family: var(--font-mono); font-size: 0.72rem;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent);
}

/* ---- experience ---- */
.role { padding-block: 2rem; border-top: 1px solid var(--rule); }
.role:first-of-type { border-top: 0; padding-top: 0; }
.role__head { margin-bottom: 1rem; }
.role__org {
  font-family: var(--font-serif); font-weight: 600;
  font-size: clamp(1.35rem, 1.1rem + 1vw, 1.8rem); letter-spacing: -0.015em;
  margin: 0; display: flex; align-items: baseline; gap: 0.6rem; flex-wrap: wrap;
}
.role__tag {
  font-family: var(--font-mono); font-size: 0.66rem; font-weight: 400;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint);
  border: 1px solid var(--rule); border-radius: 999px; padding: 0.15rem 0.55rem;
}
.role__meta { margin: 0.35rem 0 0; color: var(--ink-faint); font-size: 0.92rem; }
.role__title { color: var(--ink-soft); font-weight: 500; }
.role__points {
  margin: 0; padding: 0; list-style: none; max-width: var(--measure);
  display: grid; gap: 0.55rem;
}
.role__points li { position: relative; padding-left: 1.3rem; color: var(--ink-soft); }
.role__points li::before {
  content: ""; position: absolute; left: 0; top: 0.66em;
  width: 0.4rem; height: 1px; background: var(--accent);
}
.role__points strong { color: var(--ink); font-weight: 600; }
.experience__footnote { margin: 2.5rem 0 0; color: var(--ink-faint); font-size: 0.92rem; }

/* ---- about prose ---- */
.prose { max-width: var(--measure); display: grid; gap: 1.25rem; }
.prose p { margin: 0; color: var(--ink-soft); font-size: 1.08rem; }

/* ---- contact ---- */
.contact__headline {
  font-family: var(--font-serif); font-weight: 600;
  font-size: clamp(2rem, 1.4rem + 3vw, 3.25rem); letter-spacing: -0.02em;
  margin: 0 0 1.75rem;
}
.contact__links {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-wrap: wrap; gap: 0.75rem 1.75rem; font-size: 1.1rem;
}
.contact__links a { text-decoration-thickness: 1px; }

/* ---- footer ---- */
.site-footer {
  padding-block: 2.5rem; border-top: 1px solid var(--rule);
  color: var(--ink-faint); font-size: 0.85rem;
}
.site-footer p { margin: 0; }

/* ---- blog: "How" ---- */
.hero--blog { padding-bottom: var(--section-gap); }

.post-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; }
.post-list__item { padding-block: 1.75rem; border-top: 1px solid var(--rule); }
.post-list__item:first-child { border-top: 0; padding-top: 0; }
.post-list__link {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 1rem; text-decoration: none; flex-wrap: wrap;
}
.post-list__title {
  font-family: var(--font-serif); font-weight: 600;
  font-size: clamp(1.3rem, 1.1rem + 1vw, 1.7rem); letter-spacing: -0.015em;
  color: var(--ink);
}
.post-list__link:hover .post-list__title { color: var(--accent-ink); }
.post-list__date {
  font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.06em;
  color: var(--ink-faint); white-space: nowrap;
}
.post-list__desc { margin: 0.4rem 0 0; color: var(--ink-soft); max-width: var(--measure); }
.post-list__empty { color: var(--ink-faint); font-size: 1.1rem; }

/* post page */
.post { max-width: 44rem; }
.post .section__label a { color: var(--ink-faint); text-decoration: none; }
.post .section__label a:hover { color: var(--accent-ink); }
.post__title {
  font-family: var(--font-serif); font-weight: 600;
  font-size: clamp(2rem, 1.4rem + 3vw, 3.1rem); line-height: 1.08;
  letter-spacing: -0.02em; margin: 0.75rem 0 0; text-wrap: balance;
}
.post__meta {
  margin: 1rem 0 2.5rem; color: var(--ink-faint);
  font-family: var(--font-mono); font-size: 0.82rem; letter-spacing: 0.04em;
}
.post__body { gap: 0; }
.post__body p { margin: 0 0 1.25rem; }
.post__body h2 {
  font-family: var(--font-serif); font-weight: 600; letter-spacing: -0.015em;
  font-size: clamp(1.4rem, 1.2rem + 1vw, 1.8rem);
  margin: 2.5rem 0 1rem; color: var(--ink);
}
.post__body h3 {
  font-family: var(--font-serif); font-weight: 600;
  font-size: 1.25rem; margin: 2rem 0 0.75rem; color: var(--ink);
}
.post__body ul, .post__body ol { margin: 0 0 1.25rem; padding-left: 1.3rem; color: var(--ink-soft); }
.post__body li { margin-bottom: 0.4rem; }
.post__body a { color: var(--accent-ink); text-decoration-color: var(--accent); }
.post__body blockquote {
  margin: 0 0 1.25rem; padding: 0.25rem 0 0.25rem 1.25rem;
  border-left: 2px solid var(--accent); color: var(--ink-soft); font-style: italic;
}
.post__body code {
  font-family: var(--font-mono); font-size: 0.88em;
  background: color-mix(in srgb, var(--ink) 7%, transparent);
  padding: 0.1em 0.35em; border-radius: 4px;
}
.post__body pre {
  background: var(--bg-card); border: 1px solid var(--rule); border-radius: 10px;
  padding: 1rem 1.15rem; overflow-x: auto; margin: 0 0 1.5rem;
}
.post__body pre code { background: none; padding: 0; font-size: 0.85rem; }
.post__body img { max-width: 100%; height: auto; border-radius: 10px; }
.post__body hr { border: 0; border-top: 1px solid var(--rule); margin: 2.5rem 0; }
.post__back { margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid var(--rule); }
.post__back a { font-family: var(--font-mono); font-size: 0.85rem; text-decoration: none; color: var(--ink-soft); }
.post__back a:hover { color: var(--accent-ink); }