/* =========================================================
   Computer's Hero — design system
   ========================================================= */

/* ---------- Tokens ---------- */
:root {
  --graphite-900: #14171b;
  --graphite-800: #181b1f;
  --graphite-700: #20242a;
  --graphite-600: #2b3038;
  --dispatch:     #2e7dbd;   /* ocean blue, the one accent */
  --dispatch-600: #235f92;
  --dispatch-100: #e8f1f8;

  --ink-900: #181b1f;
  --ink-700: #383e46;
  --ink-500: #5c6570;
  --ink-400: #8a929b;
  --line:    #e2e0da;
  --paper:   #ffffff;
  --mist:    #f0f0ee;

  --text: var(--ink-900);
  --muted: var(--ink-500);

  --font-display: "Roboto Slab", Georgia, serif;
  --font-body: "IBM Plex Sans", system-ui, -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;

  --fs-hero: clamp(2.2rem, 4.8vw, 3.6rem);
  --fs-h1:   clamp(2rem, 4.2vw, 3rem);
  --fs-h2:   clamp(1.7rem, 3.2vw, 2.3rem);
  --fs-h3:   clamp(1.15rem, 2vw, 1.4rem);
  --fs-lead: clamp(1.05rem, 1.6vw, 1.22rem);

  --nav-h: 72px;
  --container: 1160px;
  --radius-lg: 18px;
  --shadow-sm: 0 1px 2px rgba(20,23,27,.07), 0 4px 12px rgba(20,23,27,.05);
  --shadow-md: 0 8px 30px rgba(20,23,27,.12);
  --shadow-lg: 0 24px 60px rgba(20,23,27,.24);
  --ease: cubic-bezier(.22,.61,.36,1);
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; scrollbar-color: var(--dispatch) var(--mist); scrollbar-width: thin; }
body { margin: 0; font-family: var(--font-body); color: var(--text); background: var(--paper); line-height: 1.6; -webkit-font-smoothing: antialiased; overflow-x: hidden; }
img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { font-family: var(--font-display); font-weight: 700; line-height: 1.12; margin: 0 0 .4em; letter-spacing: -.01em; text-wrap: balance; }
h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }
p { margin: 0 0 1rem; text-wrap: pretty; }
::selection { background: var(--dispatch); color: #fff; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--mist); }
::-webkit-scrollbar-thumb { background: var(--ink-400); border-radius: 999px; border: 2px solid var(--mist); }
::-webkit-scrollbar-thumb:hover { background: var(--dispatch); }
:focus-visible { outline: 2px solid var(--dispatch); outline-offset: 2px; }

/* ---------- Layout ---------- */
.container { width: min(var(--container), 92vw); margin-inline: auto; }
.section { padding: clamp(3.5rem, 6vw, 5.5rem) 0; }
.section--mist { background: var(--mist); }
.eyebrow { font-family: var(--font-mono); font-size: .78rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--dispatch); margin-bottom: 1rem; display: inline-flex; align-items: center; gap: .55rem; }
.eyebrow::before { content: ""; width: 22px; height: 2px; background: var(--dispatch); border-radius: 2px; }
.lead { font-size: var(--fs-lead); color: var(--muted); }
.center { text-align: center; margin-inline: auto; max-width: 60ch; }
.center .eyebrow { justify-content: center; }
.center .eyebrow::before { display: none; }
.mt-3 { margin-top: 1.6rem; }
.mt-4 { margin-top: 2.4rem; }

/* ---------- Buttons ---------- */
.btn { --btn-bg: var(--ink-900); --btn-fg: #fff; display: inline-flex; align-items: center; gap: .55rem; padding: .82rem 1.4rem; border-radius: 8px; font-family: var(--font-body); font-weight: 600; font-size: .95rem; letter-spacing: .01em; background: var(--btn-bg); color: var(--btn-fg); border: 1px solid transparent; cursor: pointer; transition: transform .25s var(--ease), box-shadow .25s var(--ease), background .2s, border-color .2s; white-space: nowrap; }
.btn:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(20,23,27,.24); }
.btn:active { transform: translateY(-1px); }
.btn--accent { --btn-bg: var(--dispatch); }
.btn--accent:hover { box-shadow: 0 10px 24px rgba(46,125,189,.34); }
.btn--light { --btn-bg: rgba(255,255,255,.08); border-color: rgba(255,255,255,.28); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); }
.btn--light:hover { --btn-bg: rgba(255,255,255,.18); box-shadow: none; }
.btn svg { width: 1.05em; height: 1.05em; flex: none; }
.btn .arrow { transition: transform .3s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }

/* ---------- Nav ---------- */
.nav { position: fixed; inset: 0 0 auto 0; z-index: 100; border-bottom: 1px solid transparent; transition: border-color .35s; }
.nav::before { content: ""; position: absolute; inset: 0; z-index: -1; transition: background .35s var(--ease), box-shadow .35s, backdrop-filter .35s; }
.nav.is-scrolled { border-color: var(--line); }
.nav.is-scrolled::before { background: rgba(255,255,255,.82); backdrop-filter: saturate(160%) blur(16px); -webkit-backdrop-filter: saturate(160%) blur(16px); box-shadow: var(--shadow-sm); }
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: var(--nav-h); }
.brand { display: flex; align-items: center; gap: .55rem; color: #fff; transition: color .35s; }
.nav.is-scrolled .brand { color: var(--ink-900); }
.brand__mark { width: 32px; height: 32px; flex: none; }
.brand__word { font-family: var(--font-display); font-weight: 700; font-size: 1.22rem; letter-spacing: -.01em; }
.nav__links { display: flex; align-items: center; gap: 2rem; list-style: none; margin: 0; padding: 0; }
.nav__links li { flex: none; white-space: nowrap; }
.nav__links a { font-size: .95rem; font-weight: 500; color: rgba(255,255,255,.86); position: relative; padding: .3rem 0; transition: color .3s; }
.nav.is-scrolled .nav__links a { color: var(--ink-700); }
.nav__links a::after { content: ""; position: absolute; left: 0; bottom: -2px; height: 2px; width: 0; background: var(--dispatch); border-radius: 2px; transition: width .3s var(--ease); }
.nav__links a:hover::after, .nav__links a.is-active::after { width: 100%; }
.nav__links a:hover, .nav__links a.is-active { color: var(--dispatch); }
.nav__toggle { display: none; width: 44px; height: 44px; border: none; background: transparent; cursor: pointer; position: relative; z-index: 110; }
.nav__toggle span { position: absolute; left: 11px; right: 11px; height: 2px; background: #fff; border-radius: 2px; transition: transform .35s var(--ease), opacity .2s; }
.nav.is-scrolled .nav__toggle span { background: var(--ink-900); }
.nav__toggle span:nth-child(1) { top: 16px; } .nav__toggle span:nth-child(2) { top: 22px; } .nav__toggle span:nth-child(3) { top: 28px; }
body.menu-open .nav__toggle span { background: #fff !important; }
body.menu-open .nav__toggle span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
body.menu-open .nav__toggle span:nth-child(2) { opacity: 0; }
body.menu-open .nav__toggle span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.scroll-progress { position: fixed; top: 0; left: 0; height: 3px; width: 0; z-index: 120; background: var(--dispatch); transition: width .1s linear; }

/* ---------- Heroes ---------- */
.hero, .page-hero { position: relative; color: #fff; overflow: hidden; text-align: center; background: radial-gradient(120% 130% at 82% -8%, var(--graphite-600) 0%, var(--graphite-800) 46%, var(--graphite-900) 100%); }
.hero { padding: calc(var(--nav-h) + clamp(2.5rem, 6vh, 4rem)) 0 clamp(4rem, 8vh, 6rem); }
.page-hero { padding: calc(var(--nav-h) + clamp(1.8rem, 4vh, 2.6rem)) 0 clamp(3.4rem, 7vh, 5rem); }
.hero h1 { font-size: var(--fs-hero); max-width: 24ch; margin: 0 auto .5rem; }
.hero h1 .accent { color: var(--dispatch); }
.hero__sub { font-size: var(--fs-lead); color: rgba(255,255,255,.78); max-width: 56ch; margin: .9rem auto 0; }
.hero__actions { margin-top: 1.6rem; }
.page-hero h1 { margin-inline: auto; }
.page-hero .lead { color: rgba(255,255,255,.82); max-width: 60ch; margin: 1rem auto 0; }
.page-hero--tall { min-height: 60vh; display: flex; align-items: center; justify-content: center; }
.sec-chev { position: absolute; left: 0; right: 0; bottom: -1px; z-index: 1; display: block; height: clamp(24px, 4vw, 44px); }

/* ---------- Cards / grids ---------- */
.grid { display: grid; gap: clamp(1rem, 2vw, 1.6rem); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.card { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: clamp(1.6rem, 2.4vw, 2.2rem); box-shadow: var(--shadow-sm); transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s; }
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: rgba(46,125,189,.3); }
.card__icon { width: 50px; height: 50px; border-radius: 10px; display: grid; place-items: center; margin-bottom: 1.1rem; background: var(--dispatch-100); color: var(--dispatch); }
.card__icon svg { width: 25px; height: 25px; }
.card h3 { margin-bottom: .5rem; }
.card p { color: var(--muted); font-size: .98rem; margin: 0; }
.card--link { display: block; }
.card__more { display: inline-flex; align-items: center; gap: .4rem; margin-top: 1.1rem; font-weight: 600; font-size: .88rem; color: var(--dispatch); }
.card__more svg { width: 15px; height: 15px; transition: transform .3s var(--ease); }
.card--link:hover .card__more svg { transform: translateX(4px); }
.pillar .n { font-family: var(--font-mono); font-size: .85rem; font-weight: 700; color: var(--dispatch); letter-spacing: .1em; }
.pillar h3 { margin: .6rem 0 .5rem; }

/* ---------- Process steps ---------- */
.howsteps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; }
.howstep { position: relative; padding: 1.8rem 1.6rem 1.6rem; border-radius: var(--radius-lg); background: linear-gradient(160deg, rgba(255,255,255,.7), rgba(240,240,238,.55)); border: 1px solid rgba(255,255,255,.6); box-shadow: var(--shadow-sm); }
.howstep__n { font-family: var(--font-mono); font-weight: 700; font-size: .8rem; color: #fff; background: var(--ink-900); width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; margin-bottom: 1rem; }
.howstep h3 { margin-bottom: .4rem; }
.howstep p { color: var(--muted); margin: 0; }
@media (min-width: 861px) {
  .howstep:not(:last-child)::after { content: ""; position: absolute; top: 2.5rem; left: 100%; width: calc(1.2rem + 2px); height: 2px; background: repeating-linear-gradient(90deg, var(--dispatch) 0 6px, transparent 6px 11px); }
}

/* ---------- Split (two-column) blocks ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4.5rem); align-items: center; }
.split > * { min-width: 0; }
.split--top { align-items: start; }
.svc-block { scroll-margin-top: calc(var(--nav-h) + 1rem); }
.svc-block + .svc-block { margin-top: clamp(2.5rem, 5vw, 4rem); padding-top: clamp(2.5rem, 5vw, 4rem); border-top: 1px solid var(--line); }
.svc-block h2 { margin-top: 1.1rem; }
.svc-block .card { padding: 1.6rem 1.8rem; }
.svc-block__label { font-family: var(--font-mono); font-size: .78rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); margin-bottom: 1rem; }