/* Razbotics
   Layout: full-bleed black bands, left-aligned stacked grotesk headlines,
   a mono "instrument" voice for data. One brass accent, used for state only.
   Color: single dark world by choice (defence hardware, night ops). */
:root {
  --bg: #000000;
  --surface: #0e0f0f;
  --line: rgba(236, 234, 228, 0.16);
  --line-strong: rgba(236, 234, 228, 0.4);
  --fg: #eceae4;
  --muted: #8f8e88;
  --accent: #c9a86a;
  --live: #7fd18b;

  --display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --mono: "DM Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --gutter: clamp(20px, 4vw, 56px);
  --maxw: 1440px;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--display);
  font-variation-settings: "wdth" 100;
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, p, ul, dl, pre { margin: 0; }
ul { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.skip {
  position: absolute; left: var(--gutter); top: -60px;
  padding: 8px 12px; background: var(--fg); color: var(--bg);
  font-family: var(--mono); font-size: 12px; z-index: 100;
}
.skip:focus { top: 12px; }

/* ---------- Header ---------- */
.top {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px var(--gutter);
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}
.brand, .foot-brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 17px; letter-spacing: 0.02em; text-transform: uppercase;
  font-variation-settings: "wdth" 110;
}
.mark { width: 22px; height: 22px; fill: currentColor; }

.nav { display: flex; gap: 28px; align-items: center; font-size: 14px; }
.nav a { opacity: 0.85; }
.nav a:hover { opacity: 1; }
.nav-cta {
  padding: 8px 14px; border: 1px solid currentColor; opacity: 1 !important;
  font-family: var(--mono); font-size: 12px;
}

.burger {
  display: none; width: 40px; height: 40px; padding: 0; margin: -8px;
  background: none; border: 0; cursor: pointer; color: inherit;
  flex-direction: column; justify-content: center; gap: 7px;
}
.burger span { display: block; height: 2px; background: currentColor; margin: 0 8px; transition: transform .25s; }
.burger[aria-expanded="true"] span:first-child { transform: translateY(4.5px) rotate(45deg); }
.burger[aria-expanded="true"] span:last-child { transform: translateY(-4.5px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative; min-height: 88svh;
  display: grid; align-content: end;
  padding: 120px var(--gutter) 48px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}
.tac { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.hero-inner { position: relative; max-width: var(--maxw); width: 100%; margin: 0 auto; }

.hero-title {
  display: flex; flex-direction: column;
  font-size: clamp(34px, 8.2vw, 136px);
  line-height: 0.92; font-weight: 800; text-transform: uppercase;
  letter-spacing: -0.02em; font-variation-settings: "wdth" 112;
  max-width: 11ch; text-wrap: balance;
}
.hero-title span { display: block; }

.hero-meta {
  display: flex; flex-wrap: wrap; gap: 28px 56px;
  margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--line);
  font-family: var(--mono); font-size: 13px;
}
.hero-meta div { display: grid; gap: 4px; }
.hero-meta .k { color: var(--muted); }
.hero-meta .v.live::before {
  content: ""; display: inline-block; width: 7px; height: 7px; margin-right: 8px;
  border-radius: 50%; background: var(--live); vertical-align: 1px;
  animation: blink 1.6s steps(2, start) infinite;
}
@keyframes blink { to { visibility: hidden; } }
@media (prefers-reduced-motion: reduce) { .hero-meta .v.live::before { animation: none; } }

.hero-scroll {
  position: absolute; right: var(--gutter); bottom: 48px;
  font-family: var(--mono); font-size: 12px; color: var(--muted);
}
.hero-scroll::after { content: " ↓"; }

/* ---------- Shared section bits ---------- */
section { padding: clamp(72px, 10vw, 140px) var(--gutter); }
.section-head {
  max-width: var(--maxw); margin: 0 auto 48px;
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px 48px; align-items: end;
}
.section-head h2, .autonomy-copy h2, .contact h2, .careers h2 {
  font-size: clamp(36px, 5vw, 72px); line-height: 0.95; font-weight: 800;
  text-transform: uppercase; letter-spacing: -0.02em; font-variation-settings: "wdth" 112;
}
.section-head p { max-width: 52ch; color: var(--muted); font-size: 17px; }

/* ---------- Platforms rail ---------- */
.platforms { padding-bottom: 0; }
.rail { max-width: var(--maxw); margin: 0 auto; border-top: 1px solid var(--line); }
.row { border-bottom: 1px solid var(--line); }
.row-link {
  display: grid; grid-template-columns: 1.2fr 1.4fr 1fr; gap: 24px; align-items: baseline;
  padding: 36px 0 20px;
}
.row-id {
  font-size: clamp(40px, 6vw, 96px); line-height: 0.9; font-weight: 800;
  text-transform: uppercase; letter-spacing: -0.02em; font-variation-settings: "wdth" 118;
  transition: font-variation-settings .35s ease;
}
.row:hover .row-id { font-variation-settings: "wdth" 125; }
.row-tag { font-size: clamp(18px, 2vw, 26px); font-weight: 500; }
.row-class { font-family: var(--mono); font-size: 13px; color: var(--muted); text-align: right; }

.row-spec {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px 24px;
  padding: 0 0 32px; font-family: var(--mono); font-size: 13px;
}
.row-spec div { display: grid; gap: 4px; min-width: 0; }
.row-spec dt { color: var(--muted); }
.row-spec dd { margin: 0; }

/* ---------- Autonomy ---------- */
.autonomy { background: var(--surface); border-block: 1px solid var(--line); }
.autonomy-grid {
  max-width: var(--maxw); margin: 0 auto;
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px 80px;
}
.autonomy-copy { display: grid; gap: 24px; align-content: start; }
.lede { font-size: clamp(20px, 2.2vw, 28px); line-height: 1.3; font-weight: 500; max-width: 30ch; }
.autonomy-copy p:not(.lede) { color: var(--muted); max-width: 56ch; font-size: 17px; }

.caps { display: grid; gap: 0; border-top: 1px solid var(--line); }
.caps li { padding: 22px 0; border-bottom: 1px solid var(--line); display: grid; gap: 8px; }
.caps h3 { font-size: 20px; font-weight: 600; }
.caps p { color: var(--muted); max-width: 48ch; }

.term {
  max-width: var(--maxw); margin: 56px auto 0;
  border: 1px solid var(--line); padding: 20px 24px; overflow-x: auto;
  font-family: var(--mono); font-size: 13px; line-height: 1.6; color: var(--muted);
  background: var(--bg);
}
.term pre { font: inherit; white-space: pre; }

/* ---------- Missions ---------- */
.mission-grid {
  max-width: var(--maxw); margin: 0 auto;
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-left: 1px solid var(--line); border-top: 1px solid var(--line);
}
.mission-grid article {
  padding: 28px 24px 40px; min-width: 0;
  border-right: 1px solid var(--line); border-bottom: 1px solid var(--line);
  display: grid; gap: 16px; align-content: start;
}
.mission-grid h3 {
  font-size: 22px; font-weight: 700; text-transform: uppercase; letter-spacing: -0.01em;
  font-variation-settings: "wdth" 110;
}
.mission-grid p { color: var(--muted); font-size: 15px; }

/* ---------- Company ---------- */
.company { background: var(--fg); color: var(--bg); }
.company-inner { max-width: var(--maxw); margin: 0 auto; display: grid; gap: 48px; }
.company h2 {
  font-size: clamp(30px, 4.4vw, 64px); line-height: 1.02; font-weight: 800;
  letter-spacing: -0.02em; max-width: 20ch; text-wrap: balance;
  font-variation-settings: "wdth" 105;
}
.company-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 32px 64px; }
.company-cols p { max-width: 50ch; font-size: 17px; }
.principles {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
  border-top: 1px solid rgba(0,0,0,.25); padding-top: 24px; font-size: 15px;
}
.principles li { min-width: 0; }
.principles strong { display: block; font-weight: 700; margin-bottom: 4px; }

/* ---------- Careers ---------- */
.roles { max-width: var(--maxw); margin: 0 auto; border-top: 1px solid var(--line); }
.roles a {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 22px 0; border-bottom: 1px solid var(--line); font-size: clamp(18px, 2vw, 26px); font-weight: 500;
}
.roles a:hover { color: var(--accent); }
.role-meta { font-family: var(--mono); font-size: 13px; color: var(--muted); }

/* ---------- Contact ---------- */
.contact { border-top: 1px solid var(--line); }
.contact-inner { max-width: var(--maxw); margin: 0 auto; display: grid; gap: 24px; }
.contact p { max-width: 52ch; color: var(--muted); font-size: 17px; }
.contact-email { font-family: var(--mono); font-size: clamp(18px, 2.4vw, 30px); }
.contact-email a { color: var(--fg); border-bottom: 1px solid var(--line-strong); }
.contact-email a:hover { color: var(--accent); border-color: var(--accent); }

/* ---------- Footer ---------- */
.foot {
  max-width: var(--maxw); margin: 0 auto;
  padding: 32px var(--gutter) 40px; border-top: 1px solid var(--line);
  display: grid; grid-template-columns: auto 1fr auto; gap: 24px 48px; align-items: center;
  font-size: 13px;
}
.foot-nav { display: flex; flex-wrap: wrap; gap: 20px; color: var(--muted); }
.foot-nav a:hover { color: var(--fg); }
.foot-legal { font-family: var(--mono); color: var(--muted); display: flex; gap: 20px; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .section-head, .autonomy-grid, .company-cols { grid-template-columns: 1fr; }
  .row-link { grid-template-columns: 1fr; gap: 10px; }
  .row-class { text-align: left; }
  .row-spec, .mission-grid, .principles { grid-template-columns: repeat(2, 1fr); }
  .foot { grid-template-columns: 1fr; }
}
@media (max-width: 900px) {
  .nav {
    position: fixed; inset: 0; background: var(--bg); color: var(--fg);
    flex-direction: column; justify-content: center; align-items: flex-start; gap: 22px;
    padding: var(--gutter); font-size: 28px; font-weight: 700; text-transform: uppercase;
    transform: translateX(100%); transition: transform .3s ease; z-index: 40;
  }
  .nav.open { transform: none; }
  .nav-cta { font-size: 13px; margin-top: 12px; }
  .burger { display: flex; position: relative; z-index: 60; }
  .hero { padding-top: 100px; min-height: 80svh; }
  .hero-scroll { display: none; }
  .row-spec, .mission-grid, .principles { grid-template-columns: 1fr; }
  .foot-legal { flex-direction: column; gap: 6px; }
}