/*
  PreVettedAI shared stylesheet
  -----------------------------
  Design intent (deliberately distinct from prevetted.fm / ramallo.io / densitylabs.io):
    - High-contrast monochrome with one electric accent (#3dff9a)
    - Zero border-radius. Sharp, technical, terminal-leaning grid
    - Space Grotesk for display, Inter for body, JetBrains Mono for codes/labels
    - Single accent reserved for action: links, primary CTA, key highlights
    - Light theme: stark white/slate, not the warm "paper" used on sister sites
    - Dark theme: near-black with cool slate, not the warm "ink" used on sister sites
*/

/* ---------- Tokens ---------- */
:root {
  --font-display: 'Space Grotesk', ui-sans-serif, system-ui, sans-serif;
  --font-body:    'Inter', ui-sans-serif, system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  --accent: #3dff9a;
  --accent-ink: #002f15;

  --radius: 0;
  --hairline: 1px;
  --maxw: 1180px;
  --gutter: clamp(20px, 4vw, 56px);

  --ease: cubic-bezier(.2,.7,.2,1);
}

/* Light (default) */
:root,
[data-theme="light"] {
  --bg:        #ffffff;
  --bg-soft:   #f6f6f4;
  --bg-card:   #ffffff;
  --fg:        #0a0a0b;
  --fg-soft:   #2a2a2e;
  --fg-muted:  #6b6b72;
  --line:      #d9d9d4;
  --line-soft: #ececea;
  --shadow:    0 1px 0 rgba(10,10,11,.04);
  color-scheme: light;
}

/* Dark */
[data-theme="dark"] {
  --bg:        #0a0a0b;
  --bg-soft:   #131316;
  --bg-card:   #0f0f12;
  --fg:        #f1f1ec;
  --fg-soft:   #c8c8c2;
  --fg-muted:  #8a8a90;
  --line:      #24242a;
  --line-soft: #1b1b20;
  --shadow:    none;
  color-scheme: dark;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; height: auto; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
a { color: var(--fg); text-decoration: underline; text-underline-offset: 4px; text-decoration-thickness: 1px; text-decoration-color: var(--line); transition: color .18s var(--ease), text-decoration-color .18s var(--ease); }
a:hover { color: var(--accent); text-decoration-color: var(--accent); }

/* ---------- Type scale ---------- */
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 600; letter-spacing: -0.02em; line-height: 1.08; margin: 0 0 .5em; }
h1 { font-size: clamp(2.4rem, 6vw, 4.6rem); letter-spacing: -0.035em; }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.4rem); letter-spacing: -0.025em; }
h3 { font-size: clamp(1.15rem, 1.8vw, 1.4rem); }
p  { margin: 0 0 1em; }
small, .meta { font-family: var(--font-mono); font-size: .75rem; letter-spacing: .04em; text-transform: uppercase; color: var(--fg-muted); }
.eyebrow { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; color: var(--accent); display: inline-block; }
.eyebrow::before { content: "// "; color: var(--fg-muted); }

/* ---------- Layout primitives ---------- */
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter); }
.section { padding: clamp(56px, 9vw, 120px) 0; border-top: var(--hairline) solid var(--line); }
.section:first-of-type { border-top: 0; }
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 800px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 22px;
  font-family: var(--font-mono); font-size: .82rem; letter-spacing: .08em; text-transform: uppercase;
  border: var(--hairline) solid var(--fg);
  background: var(--fg); color: var(--bg);
  text-decoration: none;
  transition: transform .18s var(--ease), background .18s var(--ease), color .18s var(--ease);
}
.btn:hover { transform: translate(-2px, -2px); box-shadow: 4px 4px 0 var(--accent); color: var(--bg); background: var(--fg); }
.btn--accent { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn--accent:hover { color: var(--accent-ink); background: var(--accent); box-shadow: 4px 4px 0 var(--fg); }
.btn--ghost { background: transparent; color: var(--fg); }
.btn--ghost:hover { background: transparent; color: var(--accent); border-color: var(--accent); }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in oklab, var(--bg) 88%, transparent);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: var(--hairline) solid var(--line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.nav__logo {
  display: inline-flex; align-items: center;
  text-decoration: none; color: var(--fg);
  line-height: 0;
}
.nav__logo svg { height: 26px; width: auto; display: block; }
.nav__logo:hover { color: var(--accent); }
.nav__links { display: flex; gap: 28px; align-items: center; }
.nav__links a { font-family: var(--font-mono); font-size: .78rem; letter-spacing: .06em; text-transform: uppercase; text-decoration: none; }
.nav__cta { display: flex; gap: 14px; align-items: center; }
.nav__cta .theme-toggle { margin-right: 10px; }
.nav__cta .nav__hire { margin-left: 4px; }
.nav__menu-toggle {
  display: none;
  width: 40px; height: 40px;
  border: var(--hairline) solid var(--line);
  align-items: center; justify-content: center;
  font-family: var(--font-mono); font-size: 1rem;
}
.nav__menu-toggle:hover { border-color: var(--accent); color: var(--accent); }
@media (max-width: 880px) {
  .nav__links { display: none; }
  .nav__menu-toggle { display: inline-flex; }
  .nav__talent, .nav__hire { display: none; }
}

/* Mobile drawer */
.nav__drawer {
  display: none;
  border-top: var(--hairline) solid var(--line);
  background: var(--bg);
  padding: 20px var(--gutter) 28px;
}
.nav__drawer[data-open] { display: block; }
.nav__drawer-links { display: flex; flex-direction: column; }
.nav__drawer-links a {
  padding: 14px 0;
  border-bottom: var(--hairline) solid var(--line-soft);
  font-family: var(--font-display); font-weight: 600; font-size: 1.1rem;
  text-decoration: none;
}
.nav__drawer-links a:hover { color: var(--accent); }
.nav__drawer-cta { display: flex; flex-direction: column; gap: 10px; margin-top: 20px; }
.nav__drawer-cta .btn { width: 100%; justify-content: center; }
.theme-toggle {
  width: 34px; height: 34px;
  border: var(--hairline) solid var(--line);
  display: inline-grid; place-items: center;
  font-family: var(--font-mono); font-size: .8rem;
}
.theme-toggle:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- Hero ---------- */
.hero { padding: clamp(72px, 12vw, 160px) 0 clamp(56px, 9vw, 120px); position: relative; overflow: hidden; }
.hero__inner { position: relative; z-index: 2; }
.hero h1 .accent { color: var(--accent); }
.hero p.lede { font-size: clamp(1.05rem, 1.6vw, 1.25rem); color: var(--fg-soft); max-width: 60ch; margin-top: 1.2em; }
.hero__ctas { display: flex; gap: 14px; margin-top: 2.2em; flex-wrap: wrap; }
.hero__grid {
  position: absolute; inset: 0; pointer-events: none; opacity: .35;
  background-image:
    linear-gradient(to right, var(--line-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line-soft) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
}
.kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 3.5em; border-top: var(--hairline) solid var(--line); border-bottom: var(--hairline) solid var(--line); }
.kpis > div { padding: 22px 18px; border-right: var(--hairline) solid var(--line); }
.kpis > div:last-child { border-right: 0; }
.kpis .num { font-family: var(--font-display); font-weight: 600; font-size: clamp(1.6rem, 3vw, 2.2rem); letter-spacing: -0.03em; color: var(--accent); }
.kpis .lbl { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--fg-muted); margin-top: 6px; }
@media (max-width: 720px) {
  .kpis { grid-template-columns: repeat(2, 1fr); }
  .kpis > div:nth-child(2) { border-right: 0; }
  .kpis > div:nth-child(1), .kpis > div:nth-child(2) { border-bottom: var(--hairline) solid var(--line); }
}

/* ---------- Cards ---------- */
.card {
  background: var(--bg-card);
  border: var(--hairline) solid var(--line);
  padding: 28px;
  display: flex; flex-direction: column; gap: 12px;
  transition: border-color .18s var(--ease), transform .18s var(--ease);
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); }
.card .num { font-family: var(--font-mono); font-size: .78rem; letter-spacing: .12em; color: var(--fg-muted); }
.card h3 { margin: 0; }

/* ---------- Process / numbered list ---------- */
.steps { counter-reset: step; display: grid; gap: 0; }
.step {
  border-top: var(--hairline) solid var(--line);
  padding: 28px 0;
  display: grid; grid-template-columns: 80px 1fr; gap: 24px; align-items: start;
}
.step:last-child { border-bottom: var(--hairline) solid var(--line); }
.step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-mono); font-size: .9rem; color: var(--accent);
  letter-spacing: .08em;
}
.step h3 { margin: 0 0 4px; }
.step p { color: var(--fg-soft); margin: 0; }

/* ---------- Quote ---------- */
.quote {
  border-left: 3px solid var(--accent);
  padding: 4px 0 4px 22px;
  font-family: var(--font-display); font-size: clamp(1.2rem, 2.4vw, 1.7rem); font-weight: 500;
  letter-spacing: -0.015em; line-height: 1.35;
}
.quote cite { display: block; margin-top: 14px; font-family: var(--font-mono); font-size: .78rem; letter-spacing: .08em; text-transform: uppercase; color: var(--fg-muted); font-style: normal; }

/* ---------- Proof card (Density Labs track-record block) ---------- */
.proof-card {
  border: var(--hairline) solid var(--line);
  border-left: 3px solid var(--accent);
  padding: 24px 26px;
  background: var(--bg-soft);
}
.proof-card .eyebrow { margin-bottom: 12px; }
.proof-card__stat {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  font-weight: 500;
  letter-spacing: -0.015em;
  line-height: 1.3;
  margin: 0 0 .6em;
  color: var(--fg);
}
.proof-card__stat strong { color: var(--accent); font-weight: 600; }
.proof-card__line {
  color: var(--fg-soft);
  font-size: .98rem;
  line-height: 1.6;
  margin: 0 0 .8em;
}
.proof-card__line:last-child { margin-bottom: 0; }
.proof-card__attribution {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .06em;
  color: var(--fg-muted);
  margin: 0;
}
.proof-card__attribution a { color: var(--fg-soft); text-decoration-color: var(--line); }
.proof-card__attribution a:hover { color: var(--accent); }

/* ---------- Obfuscated email links (see assets/js/liame.js) ---------- */
.liame-decoy { display: none; }
.liame-svg { vertical-align: middle; pointer-events: none; }

/* ---------- Skills grid ---------- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 0;
  border-top: var(--hairline) solid var(--line);
  border-left: var(--hairline) solid var(--line);
}
.skill-tile {
  display: flex; align-items: center; gap: 14px;
  padding: 22px;
  border-right: var(--hairline) solid var(--line);
  border-bottom: var(--hairline) solid var(--line);
  text-decoration: none; color: var(--fg);
  transition: background .18s var(--ease), color .18s var(--ease);
}
.skill-tile:hover { background: var(--accent); color: var(--accent-ink); }
.skill-tile:hover .skill-tile__name { color: var(--accent-ink); }
.skill-tile__icon {
  width: 32px; height: 32px; flex: 0 0 32px;
  background-color: currentColor;
  -webkit-mask-position: center; mask-position: center;
  -webkit-mask-repeat: no-repeat; mask-repeat: no-repeat;
  -webkit-mask-size: contain; mask-size: contain;
}
.skill-tile img { width: 32px; height: 32px; flex: 0 0 32px; object-fit: contain; }
.skill-tile__name { font-family: var(--font-display); font-weight: 600; font-size: 1rem; }
.skill-tile__arrow { margin-left: auto; font-family: var(--font-mono); opacity: .6; }
.skill-tile:hover .skill-tile__arrow { opacity: 1; }

/* ---------- Skill detail page ---------- */
.skill-hero { padding: clamp(72px, 10vw, 140px) 0 clamp(48px, 7vw, 80px); }
.skill-hero__head { display: flex; align-items: center; gap: 22px; margin-bottom: 1em; }
.skill-hero__head img { width: 72px; height: 72px; object-fit: contain; }
.engineers-list { display: grid; gap: 0; border-top: var(--hairline) solid var(--line); }
.engineer-row { display: grid; grid-template-columns: 60px 1fr auto; gap: 20px; padding: 20px 0; border-bottom: var(--hairline) solid var(--line); align-items: center; }
.engineer-row .idx { font-family: var(--font-mono); color: var(--fg-muted); font-size: .8rem; }
.engineer-row .name { font-family: var(--font-display); font-weight: 600; font-size: 1.15rem; }
.engineer-row .meta { color: var(--fg-muted); }

/* ---------- FAQ accordion ---------- */
.faq details { border-bottom: var(--hairline) solid var(--line); padding: 18px 0; }
.faq summary { list-style: none; cursor: pointer; display: flex; align-items: baseline; justify-content: space-between; gap: 16px; font-family: var(--font-display); font-weight: 600; font-size: 1.1rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-family: var(--font-mono); color: var(--accent); }
.faq details[open] summary::after { content: "−"; }
.faq details > div { padding-top: 12px; color: var(--fg-soft); }

/* ---------- Footer ---------- */
.site-footer {
  border-top: var(--hairline) solid var(--line);
  margin-top: clamp(80px, 12vw, 160px);
  padding: 56px 0 32px;
  background: var(--bg-soft);
  font-size: .92rem;
}
.footer-cols { display: grid; grid-template-columns: 1.5fr repeat(4, 1fr); gap: 32px; }
.footer-cols h4 { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; color: var(--fg-muted); margin: 0 0 12px; }
.footer-cols ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.footer-cols ul a { text-decoration: none; }
.footer-cols ul a:hover { color: var(--accent); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; margin-top: 48px; padding-top: 24px; border-top: var(--hairline) solid var(--line); font-family: var(--font-mono); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; color: var(--fg-muted); }
@media (max-width: 800px) {
  .footer-cols { grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: column; gap: 12px; align-items: flex-start; }
}

/* ---------- Misc utility ---------- */
.kbd { font-family: var(--font-mono); font-size: .82rem; padding: 2px 6px; border: var(--hairline) solid var(--line); background: var(--bg-soft); }
.divider { height: 1px; background: var(--line); margin: 48px 0; }
.center { text-align: center; }
.cluster { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.callout { border: var(--hairline) solid var(--line); border-left: 3px solid var(--accent); padding: 22px 24px; background: var(--bg-soft); }

/* ---------- Accessibility ---------- */
:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 1px;
}
.btn:focus-visible,
.skill-tile:focus-visible,
.theme-toggle:focus-visible,
.nav__menu-toggle:focus-visible {
  outline-offset: 4px;
}
/* Skip link for keyboard users (markup is in default.html — see <a class="skip-link">) */
.skip-link {
  position: absolute; left: 0; top: 0;
  padding: 10px 14px;
  background: var(--fg); color: var(--bg);
  font-family: var(--font-mono); font-size: .8rem; letter-spacing: .08em; text-transform: uppercase;
  text-decoration: none;
  transform: translateY(-120%);
  transition: transform .15s var(--ease);
  z-index: 100;
}
.skip-link:focus-visible { transform: translateY(0); color: var(--bg); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .btn:hover { transform: none; box-shadow: none; }
}

/* ---------- Print ---------- */
@media print {
  :root, [data-theme="dark"] {
    --bg: #ffffff;
    --bg-soft: #ffffff;
    --bg-card: #ffffff;
    --fg: #000000;
    --fg-soft: #1a1a1a;
    --fg-muted: #555555;
    --line: #cccccc;
    --line-soft: #e5e5e5;
    --accent: #000000;
    --accent-ink: #ffffff;
  }
  body { font-size: 11pt; line-height: 1.45; }
  .site-header,
  .site-footer,
  .nav__cta,
  .nav__menu-toggle,
  .nav__drawer,
  .hero__grid,
  .hero__ctas,
  .btn,
  .theme-toggle,
  .callout .btn,
  .nav__talent { display: none !important; }
  .section { padding: 18pt 0; border-top: 1px solid #ccc; }
  a { color: #000; text-decoration: underline; }
  a[href^="http"]::after { content: " (" attr(href) ")"; font-size: 9pt; color: #555; }
  h1, h2, h3 { page-break-after: avoid; }
  blockquote, .card, .step { page-break-inside: avoid; }
  .skills-grid, .hero__inner .kpis { display: block; }
}