/* G & G Homology — design system
   Colour, type and spacing tokens first, then layout. */

:root {
  --violet: #6A57C4;
  --violet-deep: #55449C;
  --violet-wash: #F2EFFC;
  --ink: #1C1A24;
  --muted: #5E5B6B;
  --line: #E4E2EC;
  --bg: #FFFFFF;
  --surface: #F8F7FC;

  --font-display: Optima, "Gill Sans MT", "Gill Sans", Candara, "Segoe UI", system-ui, sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --step--1: clamp(0.83rem, 0.79rem + 0.18vw, 0.92rem);
  --step-0:  clamp(1rem, 0.95rem + 0.25vw, 1.13rem);
  --step-1:  clamp(1.2rem, 1.1rem + 0.5vw, 1.5rem);
  --step-2:  clamp(1.5rem, 1.3rem + 1vw, 2.1rem);
  --step-3:  clamp(2rem, 1.6rem + 2vw, 3.2rem);

  --gutter: clamp(1.25rem, 0.9rem + 1.8vw, 2.5rem);
  --section: clamp(3.5rem, 2.5rem + 5vw, 7rem);
  --max: 1120px;
  --radius: 14px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --violet: #A091E8;
    --violet-deep: #BCB0F0;
    --violet-wash: #221F38;
    --ink: #ECEAF4;
    --muted: #A9A5BC;
    --line: #2E2B40;
    --bg: #141320;
    --surface: #1B1929;
  }
}

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

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

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

h1, h2, h3 { font-family: var(--font-display); font-weight: 400; line-height: 1.15; margin: 0; }
h1 { font-size: var(--step-3); letter-spacing: -0.01em; }
h2 { font-size: var(--step-2); }
h3 { font-size: var(--step-1); }
p { margin: 0 0 1rem; max-width: 62ch; }
a { color: var(--violet); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--violet-deep); }

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

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--violet); color: #fff;
  padding: 0.75rem 1.25rem; z-index: 100; border-radius: 0 0 var(--radius) 0;
}
.skip:focus { left: 0; color: #fff; }

.wrap { width: 100%; max-width: var(--max); margin-inline: auto; padding-inline: var(--gutter); }

/* Lockup ---------------------------------------------------------------- */
.mark { display: block; height: 100%; width: auto; color: var(--violet); }
.lockup { display: inline-flex; align-items: center; gap: 0.7rem; text-decoration: none; color: inherit; }
.lockup .mark { height: clamp(2.3rem, 1.85rem + 1.5vw, 3.1rem); }
.lockup__name {
  font-family: var(--font-display);
  font-size: clamp(0.95rem, 0.84rem + 0.5vw, 1.3rem);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink);
  white-space: nowrap;
}

/* Header ---------------------------------------------------------------- */
.site-header { border-bottom: 1px solid var(--line); }
.site-header .wrap {
  display: flex; flex-wrap: wrap; align-items: center;
  justify-content: space-between; gap: 1rem 1.5rem; padding-block: clamp(1.2rem, 0.9rem + 1vw, 1.9rem);
}
.nav ul { display: flex; flex-wrap: wrap; gap: 0.35rem 1.4rem; list-style: none; margin: 0; padding: 0; }
.nav a {
  display: inline-block; padding: 0.55rem 0.1rem;
  color: var(--muted); text-decoration: none; font-size: var(--step--1);
  letter-spacing: 0.04em;
}
.nav a:hover, .nav a:focus-visible { color: var(--violet); }

/* Hero ------------------------------------------------------------------ */
.hero { position: relative; overflow: hidden; padding-block: var(--section); }
.hero__inner { position: relative; z-index: 1; }
.hero h1 { max-width: 20ch; margin-bottom: 1.5rem; }
.hero .lede { font-size: var(--step-1); color: var(--muted); max-width: 46ch; line-height: 1.5; }
.hero__art {
  position: absolute; right: -6%; top: 50%; transform: translateY(-50%);
  width: min(46%, 520px); color: var(--violet); opacity: 0.07; pointer-events: none;
}
@media (max-width: 860px) { .hero__art { display: none; } }

.eyebrow {
  display: inline-block; font-size: var(--step--1); letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--violet); margin-bottom: 1.1rem;
}

.actions { display: flex; flex-wrap: wrap; gap: 0.9rem; margin-top: 2.2rem; }
.btn {
  display: inline-flex; align-items: center; min-height: 48px;
  padding: 0.7rem 1.5rem; border-radius: 999px;
  font-size: var(--step--1); letter-spacing: 0.04em; text-decoration: none;
  border: 1px solid var(--violet); transition: background-color 0.18s ease, color 0.18s ease;
}
.btn--solid { background: var(--violet); color: #fff; }
.btn--solid:hover { background: var(--violet-deep); color: #fff; }
.btn--ghost { color: var(--violet); }
.btn--ghost:hover { background: var(--violet-wash); color: var(--violet-deep); }

.announce {
  display: inline-flex; align-items: center; gap: 0.75rem;
  margin-top: 2rem; padding: 0.55rem 1.1rem 0.55rem 0.6rem;
  border: 1px solid var(--line); border-radius: 999px;
  background: var(--surface); color: var(--muted);
  text-decoration: none; font-size: var(--step--1); line-height: 1.45;
  transition: border-color 0.18s ease, color 0.18s ease;
}
.announce:hover, .announce:focus-visible { border-color: var(--violet); color: var(--ink); }
.announce__tag {
  flex: none; background: var(--violet); color: #fff; border-radius: 999px;
  padding: 0.2rem 0.65rem; font-size: 0.8em; letter-spacing: 0.1em; text-transform: uppercase;
}
.announce__arrow { flex: none; color: var(--violet); }
@media (max-width: 700px) {
  .announce { border-radius: 14px; align-items: flex-start; }
  .announce__tag { margin-top: 0.1rem; }
}

/* Sections -------------------------------------------------------------- */
.section { padding-block: var(--section); border-top: 1px solid var(--line); }
.section--tint { background: var(--surface); }
.section__head { max-width: 58ch; margin-bottom: 3rem; }
.section__head p { color: var(--muted); margin-top: 1rem; }

.grid { display: grid; gap: 1.5rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 270px), 1fr)); }
.grid--single { grid-template-columns: minmax(0, 34rem); }

.card {
  background: var(--bg); border: 1px solid var(--line);
  border-radius: var(--radius); padding: clamp(1.4rem, 1rem + 1.2vw, 2rem);
}
.card h3 { margin-bottom: 0.7rem; }
.card__brand { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.7rem; }
.card__brand h3 { margin-bottom: 0; }
.product-mark { flex: none; width: 2.2rem; height: 2.2rem; color: var(--violet); }
.card p { color: var(--muted); margin-bottom: 0; }
.card p + .status {
  margin-top: 1.1rem; padding-top: 0.9rem; border-top: 1px solid var(--line);
  font-size: var(--step--1); letter-spacing: 0.08em; color: var(--violet);
}
.card__num {
  display: block; font-size: var(--step--1); letter-spacing: 0.12em;
  color: var(--violet); margin-bottom: 1rem;
}

.rows { display: grid; gap: 0; border-top: 1px solid var(--line); }
.row {
  display: grid; gap: 0.4rem 2.5rem; padding-block: 1.75rem;
  border-bottom: 1px solid var(--line); grid-template-columns: 1fr;
}
@media (min-width: 760px) { .row { grid-template-columns: minmax(0, 15rem) minmax(0, 1fr); } }
.row h3 { font-size: var(--step-1); }
.row p { color: var(--muted); margin-bottom: 0; }

/* Contact --------------------------------------------------------------- */
.contact-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 1.1rem; }
.contact-list dd { margin: 0.15rem 0 0; }
.contact-list dt, .contact-label {
  font-size: var(--step--1); letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted);
}
.contact-list a { font-family: var(--font-display); font-size: var(--step-1); text-decoration: none; }
.contact-list a:hover { text-decoration: underline; }

/* Quiet note band ------------------------------------------------------- */
.note { border-top: 1px solid var(--line); padding-block: clamp(1.75rem, 1.3rem + 1.5vw, 2.75rem); }
.note p { font-size: var(--step--1); color: var(--muted); margin: 0; max-width: 78ch; }

/* Footer ---------------------------------------------------------------- */
.site-footer { border-top: 1px solid var(--line); padding-block: 2.5rem 3.5rem; }
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 1.5rem 2rem; justify-content: space-between; align-items: center; }
.site-footer p { font-size: var(--step--1); color: var(--muted); margin: 0; max-width: none; }
.footer-brand { display: flex; align-items: center; gap: 0.7rem; }
.footer-brand .mark { height: 2.4rem; }
.footer-legal { display: grid; gap: 0.25rem; }
@media (min-width: 720px) { .footer-legal { text-align: right; } }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap;
}