/* ---------- tokens ---------- */
:root{
  --paper: #FCFCFA;
  --paper-alt: #F3F4F0;
  --ink: #101418;
  --ink-dim: #5A6068;
  --ink-mute: #878D93;
  --rule: #DDE0DC;

  --accent: #4A3FD1;

  --band-1: #D6483B;
  --band-2: #E8A33D;
  --band-3: #1FA8C4;
  --band-4: #4A3FD1;

  --display: "Archivo", sans-serif;
  --body: "Instrument Sans", sans-serif;
  --mono: "Martian Mono", monospace;

  --wrap: 1140px;
}

*{ box-sizing: border-box; }

html{ scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
}

body{
  margin: 0;
  background:
    repeating-linear-gradient(0deg,  rgba(16,20,24,0.028) 0 1px, transparent 1px 56px),
    repeating-linear-gradient(90deg, rgba(16,20,24,0.028) 0 1px, transparent 1px 56px),
    var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2{
  font-family: var(--display);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.02em;
  margin: 0;
}

p{ margin: 0; }
a{ color: inherit; text-decoration: none; }

.wrap{
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
}

.skip-link{
  position: absolute; left: -999px; top: 0;
  background: var(--accent); color: #fff;
  padding: 10px 16px; z-index: 200;
  font-family: var(--mono); font-size: 12px;
}
.skip-link:focus{ left: 16px; top: 16px; }

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

.eyebrow{
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin: 0 0 18px;
}
.eyebrow-num{ color: var(--accent); margin-right: 4px; }

/* ---------- header ---------- */
.site-header{
  position: sticky; top: 0; z-index: 100;
  background: rgba(252,252,250,0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--rule);
}
.header-inner{
  display: flex; align-items: center; gap: 28px;
  height: 68px;
}
.nav-cluster{ display: flex; align-items: center; gap: 28px; }

.logo{
  display: flex; align-items: center; gap: 10px;
  color: var(--ink);
  margin-right: auto;
}
.logo-mark{ width: 32px; height: 24px; flex-shrink: 0; }
.logo-word{
  font-family: var(--display);
  font-weight: 600;
  font-size: 17px;
  letter-spacing: -0.01em;
}

.site-nav{ display: flex; gap: 26px; }
.site-nav a{
  font-size: 14.5px;
  color: var(--ink-dim);
  transition: color .15s ease;
}
.site-nav a:hover{ color: var(--ink); }

.header-cta{ flex-shrink: 0; }

.nav-toggle{
  display: none;
  flex-direction: column; justify-content: center; gap: 5px;
  width: 36px; height: 36px;
  background: none; border: none; padding: 0; cursor: pointer;
}
.nav-toggle span{ display: block; height: 2px; width: 100%; background: var(--ink); }

/* ---------- buttons ---------- */
.btn{
  display: inline-flex; align-items: center;
  font-family: var(--body);
  font-weight: 500;
  font-size: 15px;
  padding: 12px 22px;
  border-radius: 2px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background .15s ease, border-color .15s ease, color .15s ease;
}
.btn-primary{ background: var(--accent); color: #fff; }
.btn-primary:hover{ background: #3B31B4; }
.btn-ghost{ border-color: var(--rule); color: var(--ink); }
.btn-ghost:hover{ border-color: var(--ink); }
.btn-small{ padding: 8px 16px; font-size: 14px; }

/* ---------- hero ---------- */
.hero{ padding: 84px 0 0; }
.hero-title{
  font-size: clamp(2.5rem, 5.2vw, 4rem);
  margin-bottom: 24px;
}
.hero-sub{
  max-width: 52ch;
  font-size: 18px;
  color: var(--ink-dim);
  margin-bottom: 32px;
}
.hero-actions{ display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- prism diagram ---------- */
.diagram{ margin: 40px 0 0; }
.prism{ display: block; width: 100%; height: auto; }

.prism-body{
  fill: rgba(74,63,209,0.04);
  stroke: var(--ink);
  stroke-width: 1.6;
  stroke-linejoin: round;
}
.normal{
  stroke: var(--ink-mute);
  stroke-width: 1;
  stroke-dasharray: 4 4;
}
.ray{ stroke-width: 1.8; stroke-linecap: round; fill: none; }
.ray-in, .ray-mid{ stroke: var(--ink); }
.r1{ stroke: var(--band-1); }
.r2{ stroke: var(--band-2); }
.r3{ stroke: var(--band-3); }
.r4{ stroke: var(--band-4); }

.diagram figcaption{
  max-width: var(--wrap);
  margin: 10px auto 0;
  padding: 0 24px;
  text-align: right;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.02em;
  color: var(--ink-mute);
}

/* one orchestrated page-load moment */
.js-anim .prism-body,
.js-anim .normal{ opacity: 0; animation: fade-in .5s ease .1s forwards; }
.js-anim .ray{
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  animation: draw .8s cubic-bezier(.4,0,.2,1) forwards;
}
.js-anim .ray-in{  animation-delay: .35s; }
.js-anim .ray-mid{ animation-delay: .95s; animation-duration: .3s; }
.js-anim .r4{ animation-delay: 1.20s; }
.js-anim .r3{ animation-delay: 1.26s; }
.js-anim .r2{ animation-delay: 1.32s; }
.js-anim .r1{ animation-delay: 1.38s; }

@keyframes draw{ to{ stroke-dashoffset: 0; } }
@keyframes fade-in{ to{ opacity: 1; } }

/* ---------- sections ---------- */
.section{ padding: 92px 0; border-top: 1px solid var(--rule); }
.section-alt{ background: var(--paper-alt); }
.section-title{
  font-size: clamp(1.75rem, 3vw, 2.4rem);
  max-width: 22ch;
  margin-bottom: 20px;
}
.section-lede{
  max-width: 54ch;
  font-size: 17px;
  color: var(--ink-dim);
}

.reveal{
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.is-visible{ opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce){
  .reveal{ opacity: 1; transform: none; transition: none; }
  .js-anim .prism-body,
  .js-anim .normal{ opacity: 1; animation: none; }
  .js-anim .ray{ stroke-dashoffset: 0; animation: none; }
}

/* ---------- about / prose ---------- */
.about-grid{
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 64px;
  align-items: start;
}
.prose{ display: grid; gap: 18px; }
.prose p{ color: var(--ink-dim); font-size: 17px; max-width: 60ch; }

/* ---------- services ---------- */
.service-list{ margin: 46px 0 0; border-top: 1px solid var(--rule); }
.service{
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 40px;
  padding: 32px 0 34px 20px;
  border-bottom: 1px solid var(--rule);
  position: relative;
}
.service::before{
  content: "";
  position: absolute;
  left: 0; top: 39px;
  width: 4px; height: 22px;
}
.service[data-band="1"]::before{ background: var(--band-1); }
.service[data-band="2"]::before{ background: var(--band-2); }
.service[data-band="3"]::before{ background: var(--band-3); }
.service[data-band="4"]::before{ background: var(--band-4); }

.service-head h3{
  font-family: var(--display);
  font-weight: 600;
  font-size: 20px;
  letter-spacing: -0.01em;
  margin: 0;
}
.service-body p{ color: var(--ink-dim); font-size: 16px; max-width: 64ch; }
.service-items{
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 7px 28px;
  max-width: 62ch;
}
.service-items li{
  position: relative;
  padding-left: 15px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.01em;
}
.service-items li::before{
  content: "";
  position: absolute; left: 0; top: 8px;
  width: 7px; height: 1px;
  background: var(--ink-mute);
}

/* ---------- engagement models ---------- */
.engagement{
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  margin-top: 56px;
  background: var(--rule);
  border: 1px solid var(--rule);
}
.engagement-item{ background: var(--paper); padding: 26px 24px; }
.engagement-item h3{
  font-family: var(--display);
  font-weight: 600;
  font-size: 17px;
  margin: 0 0 8px;
}
.engagement-item p{ color: var(--ink-dim); font-size: 15px; }

/* ---------- technology stack ---------- */
.stack{ margin: 44px 0 0; border-top: 1px solid var(--rule); max-width: 860px; }
.stack-row{
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 32px;
  padding: 20px 0;
  border-bottom: 1px solid var(--rule);
}
.stack-row dt{
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-mute);
  padding-top: 3px;
}
.stack-row dd{
  margin: 0;
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.9;
}

/* ---------- contact ---------- */
.contact-grid{
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 64px;
  align-items: start;
}
.contact-direct{ margin-top: 22px; color: var(--ink-dim); font-size: 15.5px; }
.contact-direct a{ color: var(--accent); }
.contact-direct a:hover{ text-decoration: underline; }

.contact-form{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  background: var(--paper);
  border: 1px solid var(--rule);
  padding: 28px;
}
.field{ display: flex; flex-direction: column; gap: 7px; }
.field-wide{ grid-column: 1 / -1; }
.field label{
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.field input,
.field select,
.field textarea{
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 2px;
  color: var(--ink);
  font-family: var(--body);
  font-size: 15px;
  padding: 11px 13px;
  resize: vertical;
}
.field input:focus,
.field select:focus,
.field textarea:focus{
  border-color: var(--accent);
}
/* drop the ring for pointer focus only, keep it for keyboard */
.field input:focus:not(:focus-visible),
.field select:focus:not(:focus-visible),
.field textarea:focus:not(:focus-visible){
  outline: none;
}
.field-hidden{ position: absolute; left: -9999px; }
.form-status{
  grid-column: 1 / -1;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  min-height: 1.2em;
}

/* ---------- footer ---------- */
.site-footer{ border-top: 1px solid var(--rule); padding: 44px 0 32px; }
.footer-top{
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 48px;
  align-items: start;
}
.footer-legal{
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
  margin: 0;
}
.footer-legal dt{
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 7px;
}
.footer-legal dd{ margin: 0; font-size: 14.5px; color: var(--ink-dim); line-height: 1.6; }
.footer-legal a{ color: var(--accent); }
.footer-legal a:hover{ text-decoration: underline; }
.footer-copy{
  margin-top: 36px;
  padding-top: 22px;
  border-top: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.04em;
  color: var(--ink-mute);
}

/* ---------- responsive ---------- */
/* the full nav plus the CTA needs ~850px; collapse it before that */
@media (max-width: 900px){
  .about-grid{ grid-template-columns: 1fr; gap: 28px; }
  .service{ grid-template-columns: 1fr; gap: 14px; }
  .engagement{ grid-template-columns: 1fr; }
  .stack-row{ grid-template-columns: 150px 1fr; gap: 24px; }
  .contact-grid{ grid-template-columns: 1fr; gap: 40px; }
  .footer-top{ grid-template-columns: 1fr; gap: 32px; }

  .nav-cluster{ display: none; }
  .nav-toggle{ display: flex; }
  .site-header.nav-open .nav-cluster{
    display: flex; flex-direction: column; align-items: flex-start; gap: 20px;
    position: absolute; top: 68px; left: 0; right: 0;
    padding: 22px 24px 26px;
    background: var(--paper);
    border-bottom: 1px solid var(--rule);
  }
  .site-header.nav-open .site-nav{ flex-direction: column; gap: 16px; }
}

/* "infrastructure." needs 278px at 40px and the box is 272px at 320 viewports */
@media (max-width: 360px){
  .hero-title{ font-size: 2.1rem; }
  .section-title{ font-size: 1.55rem; }
}

@media (max-width: 640px){
  .hero{ padding-top: 56px; }
  .section{ padding: 64px 0; }
  .stack-row{ grid-template-columns: 1fr; gap: 6px; }
  .service-items{ grid-template-columns: 1fr; }
  .footer-legal{ grid-template-columns: 1fr; gap: 20px; }
  .contact-form{ grid-template-columns: 1fr; padding: 22px; }
  .diagram figcaption{ text-align: left; }
}