/* Sistjem — blueprint / cyanotype. One stylesheet, two languages. */

:root {
  --ground: #0A1826;
  --raised: #0E2237;
  --line:   #1D3B57;
  --paper:  #E8EEF2;
  --muted:  #8FA6B8;
  --signal: #F2A63B;

  --grid: rgba(29, 59, 87, 0.06);
  --sans: "IBM Plex Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--sans);
  font-weight: 400;
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--paper);
  background-color: var(--ground);
  background-image:
    repeating-linear-gradient(to right,  var(--grid) 0 1px, transparent 1px 24px),
    repeating-linear-gradient(to bottom, var(--grid) 0 1px, transparent 1px 24px);
  -webkit-font-smoothing: antialiased;
}

/* ---------- primitives ---------- */

p { margin: 0 0 1rem; max-width: 66ch; }
p:last-child { margin-bottom: 0; }

h1, h2, h3 { font-weight: 600; margin: 0; }

h1 {
  font-size: clamp(2.2rem, 6.2vw, 4rem);
  letter-spacing: -0.02em;
  line-height: 1.05;
  max-width: 22ch;
}

h2 {
  font-size: clamp(1.5rem, 3.4vw, 2rem);
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 1.75rem;
}

h3 {
  font-size: 1.125rem;
  letter-spacing: -0.01em;
  line-height: 1.3;
}

a {
  color: var(--paper);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-decoration-color: var(--signal);
  text-underline-offset: 3px;
}
a:hover { color: var(--signal); }

:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
  border-radius: 1px;
}

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

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 10;
  background: var(--signal);
  color: var(--ground);
  padding: 10px 16px;
  font-weight: 600;
  text-decoration: none;
}
.skip:focus { left: 8px; top: 8px; }

.wrap {
  max-width: 1040px;
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
}
@media (min-width: 820px) {
  .wrap { padding-left: clamp(56px, 8vw, 112px); padding-right: 48px; }
}

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  height: 56px;
  background: var(--ground);
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled { border-bottom-color: var(--line); }

.site-header .wrap {
  height: 56px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.wordmark {
  font-family: var(--mono);
  font-weight: 500;
  font-size: 1rem;
  letter-spacing: 0.02em;
  color: var(--paper);
  text-decoration: none;
}
.wordmark:hover { color: var(--paper); }

.site-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 20px;
  font-family: var(--mono);
  font-size: 0.8125rem;
}

.lang { display: flex; align-items: center; gap: 6px; color: var(--line); }
.lang a { text-decoration: none; color: var(--muted); }
.lang a:hover { color: var(--paper); }
.lang [aria-current="true"] { color: var(--signal); }
.lang .sep { color: var(--line); }

.nav-link { color: var(--muted); text-decoration-color: var(--line); white-space: nowrap; }
.nav-link:hover { color: var(--signal); text-decoration-color: var(--signal); }

@media (max-width: 480px) {
  .site-nav { gap: 12px; font-size: 0.75rem; }
}
@media (max-width: 380px) {
  .site-header .wrap { gap: 10px; }
  .site-nav { gap: 10px; font-size: 0.6875rem; }
  .wordmark { font-size: 0.9375rem; }
}

/* ---------- section rules + annotations ---------- */

.rule {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 0 0 28px;
}
.rule::before {
  content: "";
  flex: 1 1 auto;
  height: 1px;
  background: var(--line);
}
.rule span {
  flex: 0 0 auto;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--muted);
}

main > section { padding-top: 56px; padding-bottom: 0; }
main > section:last-of-type { padding-bottom: 56px; }
@media (min-width: 820px) {
  main > section { padding-top: 96px; }
  main > section:last-of-type { padding-bottom: 96px; }
}

/* ---------- hero ---------- */

.hero { padding-top: 48px; }
@media (min-width: 820px) { .hero { padding-top: 88px; } }

.hero .sub {
  margin-top: 1.5rem;
  color: var(--muted);
  font-size: 1.0625rem;
}
.hero .cta-row { margin-top: 2rem; }

.cta {
  display: inline-block;
  background: var(--signal);
  color: var(--ground);
  font-weight: 600;
  font-size: 1rem;
  line-height: 1.3;
  padding: 14px 24px;
  border-radius: 2px;
  text-decoration: none;
}
.cta:hover { background: #FFC15E; color: var(--ground); }

/* ---------- services ---------- */

.svc {
  border-top: 1px solid var(--line);
  padding: 24px 0 32px;
}
.svc:last-child { padding-bottom: 0; }
.svc .idx {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--muted);
  margin: 0 0 6px;
}
.svc p:not(.idx) { color: var(--muted); margin: 0; }
.svc h3 { margin: 0 0 12px; }

@media (min-width: 840px) {
  .svc { display: grid; grid-template-columns: 30% 1fr; gap: 40px; padding: 24px 0 40px; }
  .svc h3 { margin-bottom: 0; }
}

/* ---------- method ---------- */

.method { list-style: none; margin: 0; padding: 0; counter-reset: step; }
.method li {
  counter-increment: step;
  position: relative;
  padding-left: 44px;
  margin-bottom: 28px;
}
.method li:last-child { margin-bottom: 0; }
.method li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 1px;
  font-family: var(--mono);
  font-weight: 500;
  font-size: 0.9375rem;
  color: var(--signal);
}
.method h3 { margin-bottom: 2px; }
.method p { color: var(--muted); margin: 0; }

@media (min-width: 820px) {
  .method li { padding-left: 0; }
  .method li::before { left: -56px; }
  .method { padding-left: 0; }
}

/* ---------- contact ---------- */

.contact p { color: var(--muted); }
.contact .lede { color: var(--paper); max-width: 60ch; }
.contact .cta-row { margin-top: 2rem; }

/* ---------- footer ---------- */

.site-footer {
  border-top: 1px solid var(--line);
  padding-top: 24px;
  padding-bottom: 40px;
  font-family: var(--mono);
  font-size: 0.8125rem;
  color: var(--muted);
}
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 6px 18px; }
.site-footer a { color: var(--muted); text-decoration-color: var(--line); }
.site-footer a:hover { color: var(--signal); }
.site-footer .mark { color: var(--paper); letter-spacing: 0.02em; }

/* ---------- the one orchestrated moment ---------- */

@keyframes rise {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: none; }
}

.rise { animation: rise 260ms ease-out both; }
.rise-1 { animation-delay: 40ms; }
.rise-2 { animation-delay: 160ms; }
.rise-3 { animation-delay: 280ms; }

@media (prefers-reduced-motion: reduce) {
  .rise { animation: none; opacity: 1; transform: none; }
}