/* ==========================================================================
   nullptr security — stylesheet
   Hand-written, dependency-free. Palette:
     navy  #01012a  (brand blue, dark sections — white text)
     red   #ec1b23  (brand accent — CTAs, links, rules)
     white #ffffff  / black #000 for text per background
   ========================================================================== */

/* Menlo for the wordmark + terminal prompt — matches the original nullptrsec.io */
@font-face {
  font-family: "Menlo";
  src: url("../fonts/Menlo-Regular.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

:root {
  --navy: #01012a;
  --navy-2: #0b0b3d;          /* raised panels on navy */
  --red: #ec1b23;
  --red-dark: #c0141b;
  --white: #ffffff;
  --ink: #0d0f14;            /* body text on white */
  --muted: #5b6270;          /* secondary text on white */
  --muted-navy: #a9abc7;     /* secondary text on navy */
  --line: #e6e8ee;           /* hairlines on white */
  --line-navy: #23234d;      /* hairlines on navy */

  --maxw: 1120px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --radius: 10px;
  --shadow: 0 1px 2px rgba(1, 1, 42, .06), 0 8px 24px rgba(1, 1, 42, .06);

  --sans: "Space Grotesk", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, "Courier New", monospace;
  --brand: "Menlo", ui-monospace, "SFMono-Regular", Consolas, "Courier New", monospace;
}

/* ---------- reset-ish ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { max-width: 100%; display: block; }
a { color: var(--red); text-decoration: none; }
a:hover { color: var(--red-dark); text-decoration: underline; }

/* Visible keyboard focus everywhere; mouse clicks stay clean via :focus-visible */
:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 3px;
  border-radius: 3px;
}
.btn:focus-visible { outline-offset: 3px; }
/* Brighter ring against navy surfaces where red-on-navy is lower contrast */
.site-header :focus-visible,
.hero :focus-visible,
.section--navy :focus-visible,
.site-footer :focus-visible { outline-color: #fff; }

h1, h2, h3 { line-height: 1.12; letter-spacing: -0.02em; font-weight: 700; margin: 0 0 .5em; }
h1 { font-size: clamp(2.25rem, 6vw, 3.75rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: 1.2rem; }
p  { margin: 0 0 1rem; }

.mono { font-family: var(--mono); }

/* ---------- layout helpers ---------- */
.container { max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: clamp(3.5rem, 8vw, 6rem); }
.section--navy { background: var(--navy); color: var(--white); }
.section--navy h1, .section--navy h2, .section--navy h3 { color: var(--white); }
.section--navy .muted { color: var(--muted-navy); }
.muted { color: var(--muted); }
.center { text-align: center; }
.eyebrow {
  font-family: var(--mono);
  font-size: .8rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--red);
  margin: 0 0 1rem;
}
.lead { font-size: clamp(1.1rem, 2.2vw, 1.3rem); max-width: 60ch; }

.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--red); color: #fff; padding: .6rem 1rem; z-index: 200;
}
.skip-link:focus { left: .5rem; top: .5rem; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  font-family: var(--sans); font-weight: 600; font-size: 1rem;
  padding: .8rem 1.4rem; border-radius: var(--radius);
  border: 1.5px solid transparent; cursor: pointer; transition: .15s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn--primary { background: var(--red); color: #fff; border-color: var(--red); }
.btn--primary:hover { background: var(--red-dark); border-color: var(--red-dark); color: #fff; }
.btn--ghost { background: transparent; color: var(--white); border-color: rgba(255,255,255,.35); }
.btn--ghost:hover { border-color: #fff; color: #fff; }
.btn--outline { background: transparent; color: var(--ink); border-color: var(--line); }
.btn--outline:hover { border-color: var(--red); color: var(--red); }

/* ---------- header / nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(1, 1, 42, .96);
  backdrop-filter: saturate(150%) blur(8px);
  border-bottom: 1px solid var(--line-navy);
}
.nav { display: flex; align-items: center; justify-content: space-between; gap: 1rem; height: 64px; }
.brand { display: inline-flex; align-items: baseline; gap: .15rem; color: #fff; font-family: var(--brand); font-weight: 400; letter-spacing: 0; font-size: 1.1rem; }
.brand:hover { text-decoration: none; color: #fff; }
.brand .ptr { color: var(--red); }
.brand .sec { color: var(--white); }

.nav-links { display: flex; align-items: center; gap: 1.75rem; list-style: none; margin: 0; padding: 0; }
.nav-links a { color: var(--white); font-size: .95rem; font-weight: 500; }
.nav-links a:hover { color: var(--red); text-decoration: none; }
.nav-links a.active { color: #fff; }
.nav-cta { margin-left: .25rem; }

.nav-toggle {
  display: none; background: none; border: 0; cursor: pointer; padding: .5rem;
  color: #fff;
}
.nav-toggle svg { width: 26px; height: 26px; }

@media (max-width: 820px) {
  .nav-toggle { display: inline-flex; }
  .nav-links {
    position: absolute; left: 0; right: 0; top: 64px;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--navy); border-bottom: 1px solid var(--line-navy);
    padding: .5rem var(--gutter) 1.25rem;
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links li { padding: .25rem 0; }
  .nav-links a { display: block; padding: .65rem 0; font-size: 1.05rem; }
  .nav-cta { margin: .5rem 0 0; }
  .nav-cta .btn { width: 100%; justify-content: center; }
}

/* ---------- hero ---------- */
.hero { background: var(--navy); color: #fff; position: relative; overflow: hidden; }
.hero .hexfeed {  /* faded hexdump backdrop — real ELF of /bin/bash, static markup in the hero */
  position: absolute; inset: 0; margin: 0; z-index: 0;
  pointer-events: none; user-select: none;
  font-family: var(--mono);
  font-size: .82rem; line-height: 1.9; white-space: pre; text-align: right;
  transform: scaleX(1.08); transform-origin: top right;  /* widen the glyphs a touch */
  color: #aeb6cb; opacity: .2;
  overflow: hidden;
  padding: 1.5rem var(--gutter) 0 0;
  -webkit-mask-image: radial-gradient(ellipse 85% 75% at 78% 0%, #000 0%, transparent 72%);
          mask-image: radial-gradient(ellipse 85% 75% at 78% 0%, #000 0%, transparent 72%);
}
.hero .container { position: relative; z-index: 1; padding-block: clamp(4rem, 10vw, 7rem); }
.hero h1 { max-width: 16ch; }
.hero h1 .accent { color: var(--red); }
.hero .lead { color: var(--muted-navy); }

/* One orchestrated page-load reveal — only when motion is welcome */
@media (prefers-reduced-motion: no-preference) {
  .hero .prompt, .hero h1, .hero .lead, .hero-actions {
    opacity: 0;
    animation: hero-rise .6s cubic-bezier(.2, .7, .2, 1) both;
  }
  .hero h1 { animation-delay: .08s; }
  .hero .lead { animation-delay: .16s; }
  .hero-actions { animation-delay: .24s; }
}
@keyframes hero-rise {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: none; }
}
.hero .prompt { font-family: var(--brand); color: var(--red); font-size: .85rem; letter-spacing: .1em; margin-bottom: 1.25rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .85rem; margin-top: 2rem; }

/* ---------- card grids ---------- */
.grid { display: grid; gap: 1.25rem; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 860px) { .grid-3 { grid-template-columns: 1fr; } .grid-2 { grid-template-columns: 1fr; } }

.card {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.6rem; box-shadow: var(--shadow);
}
.card h3 { margin-bottom: .4rem; }
.card p { margin: 0; color: var(--muted); font-size: .98rem; }
.card .num { font-family: var(--mono); color: var(--red); font-size: .8rem; letter-spacing: .1em; }

/* cards on navy */
.section--navy .card { background: var(--navy-2); border-color: var(--line-navy); box-shadow: none; }
.section--navy .card p { color: var(--muted-navy); }

/* ---------- capability list (tag chips) ---------- */
.chips { display: flex; flex-wrap: wrap; gap: .55rem; margin: 1rem 0 0; padding: 0; list-style: none; }
.chips li {
  font-family: var(--mono); font-size: .82rem;
  border: 1px solid var(--line-navy); color: var(--muted-navy);
  border-radius: 999px; padding: .3rem .8rem;
}

/* ---------- stat band ---------- */
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; text-align: center; }
@media (max-width: 720px) { .stats { grid-template-columns: 1fr; gap: 2rem; } }
.stat .figure { font-size: clamp(2rem, 5vw, 2.75rem); font-weight: 700; color: var(--white); letter-spacing: -.02em; }
.stat .figure .red { color: var(--red); }
.stat .label { color: var(--muted-navy); font-size: .95rem; }

/* ---------- split / how-we-help ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4rem); align-items: start; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } }
.steps { list-style: none; margin: 0; padding: 0; }
.steps li { padding: 1.1rem 0; border-top: 1px solid var(--line); }
.steps li:first-child { border-top: 0; }
.steps h3 { margin-bottom: .15rem; }
.steps p { margin: 0; color: var(--muted); font-size: .98rem; }

/* ---------- CTA band ---------- */
.cta-band { text-align: center; }
.cta-band h2 { max-width: 18ch; margin-inline: auto; }
/* Pin the lead to the same centered column as the heading (utility .mx-auto
   was being out-specified, letting the paragraph go full-bleed and drift left) */
.cta-band .lead { max-width: 54ch; margin-inline: auto; }
.cta-band .actions { margin-top: 1.75rem; display: flex; gap: .85rem; justify-content: center; flex-wrap: wrap; }

/* ---------- careers ---------- */
.role {
  border: 1px solid var(--line); border-radius: var(--radius); padding: 1.5rem;
  display: grid; grid-template-columns: 1fr auto; gap: 1rem; align-items: center;
  background: #fff; box-shadow: var(--shadow);
}
@media (max-width: 640px) { .role { grid-template-columns: 1fr; } }
.role h3 { margin: 0 0 .25rem; color: var(--navy); }  /* role cards are white even inside navy sections */
.role .meta { font-family: var(--mono); font-size: .82rem; color: var(--muted); letter-spacing: .05em; }
.role p { margin: .5rem 0 0; color: var(--muted); font-size: .96rem; }
.values { list-style: none; margin: 0; padding: 0; display: grid; gap: .75rem; }
.values li { padding-left: 1.5rem; position: relative; color: var(--muted); }
.values li::before { content: "›"; position: absolute; left: 0; color: var(--red); font-weight: 700; }

/* benefits — compact two-column bulleted list with a sleek diamond marker */
.benefits {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: 1fr 1fr; gap: .85rem 2.75rem;
}
@media (max-width: 640px) { .benefits { grid-template-columns: 1fr; } }
.benefits li {
  position: relative; padding-left: 1.35rem;
  color: var(--muted); font-size: .96rem; line-height: 1.5;
}
.benefits li::before {
  content: ""; position: absolute; left: 0; top: .5em;
  width: .42rem; height: .42rem; background: var(--red);
  transform: rotate(45deg);  /* small red diamond */
}
.benefits .b-title { color: var(--ink); font-weight: 600; }
.section--navy .benefits li { color: var(--white); }

/* ---------- footer ---------- */
.site-footer { background: var(--navy); color: var(--muted-navy); padding-block: 2.5rem; border-top: 1px solid var(--line-navy); }
.footer-inner { display: flex; flex-wrap: wrap; gap: 1rem 2rem; align-items: center; justify-content: space-between; }
.site-footer a { color: var(--muted-navy); }
.site-footer a:hover { color: #fff; text-decoration: none; }
.footer-links { display: flex; gap: 1.25rem; list-style: none; margin: 0; padding: 0; flex-wrap: wrap; }
.footer-legal { font-size: .85rem; }
.footer-tagline { margin: .5rem 0 0; }

/* spacing / layout utilities */
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mx-auto { margin-inline: auto; }
.measure { max-width: 60ch; }
.stack > * + * { margin-top: 1rem; }