/* ==========================================================================
   NeuroHype — Landing page layout
   Structure and look are the founder-approved baseline (reference/
   neurohype-landing-concept.html). Extended and deepened, not redesigned.
   ========================================================================== */

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-size: 16px;
  line-height: 1.6;
  /* Faint grid on dark — the only background texture. No neural imagery. */
  background-image:
    linear-gradient(var(--nh-text-09) 1px, transparent 1px),
    linear-gradient(90deg, var(--nh-text-09) 1px, transparent 1px);
  background-size: 72px 72px;
  background-attachment: fixed;
}

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }
section { padding: 96px 0; }

h1, h2, .anton {
  font-family: var(--nh-font-display);
  text-transform: uppercase;
  font-weight: 400;
  letter-spacing: 0.01em;
  color: var(--nh-text-100);
}
.mono {
  font-family: var(--nh-font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--nh-text-50);
}
a { color: inherit; text-decoration: none; }
.eyebrow { margin-bottom: 14px; }
.section-head { font-size: clamp(34px, 4.6vw, 54px); line-height: 1.05; max-width: 14em; }
.lede { margin-top: 20px; max-width: 38em; color: var(--nh-text-50); }
.lede b { color: var(--nh-text-84); }

/* Keyboard users land here first. */
.skip-link {
  position: absolute; left: -9999px;
  background: var(--nh-card-3); color: var(--nh-text-100);
  padding: 12px 18px; border-radius: 8px; z-index: 100;
}
.skip-link:focus { left: 24px; top: 18px; }
:focus-visible { outline: 2px solid var(--nh-control); outline-offset: 3px; }

/* --- Nav ----------------------------------------------------------------- */
nav {
  display: flex; justify-content: space-between; align-items: center;
  padding: 22px 0; border-bottom: 1px solid var(--nh-text-09); gap: 16px;
}
.brand { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.brand__name {
  font-family: var(--nh-font-display);
  font-size: 20px; letter-spacing: 0.04em; color: var(--nh-text-100);
}
.brand__tag {
  font-family: var(--nh-font-mono);
  font-size: 10px; letter-spacing: 0.1em;
  color: var(--nh-text-32); text-transform: uppercase;
}

/* --- Hero ---------------------------------------------------------------- */
.hero {
  display: grid; grid-template-columns: 1.25fr 0.75fr;
  gap: 48px; align-items: center; padding: 110px 0 90px;
}
.hero__kicker { color: var(--nh-nico-pink); margin-bottom: 18px; }
.hero h1 { font-size: clamp(44px, 7.2vw, 86px); line-height: 1.02; }
.hero h1 .accent { color: var(--nh-control); }
.hero p { margin: 26px 0 32px; max-width: 34em; color: var(--nh-text-84); }
.hero p b { color: var(--nh-text-100); }
.hero__meta { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 18px; }

/* Signal heart — bars are the logo's own DNA. */
.heart { display: flex; flex-direction: column; align-items: center; gap: 7px; }
.heart__row { display: flex; gap: 8px; justify-content: center; }
.heart__bar {
  height: 9px; border-radius: 5px;
  transform: scaleX(0); transform-origin: center;
  animation: nh-grow var(--nh-dur-settle) var(--nh-ease-signal) forwards;
}
@keyframes nh-grow { to { transform: scaleX(1); } }

/* --- Ticker -------------------------------------------------------------- */
.ticker-band {
  border-top: 1px solid var(--nh-text-09);
  border-bottom: 1px solid var(--nh-text-09);
  overflow: hidden; padding: 14px 0; background: rgba(0, 0, 0, 0.18);
}
.ticker { display: flex; white-space: nowrap; animation: nh-scroll 36s linear infinite; width: max-content; }
.ticker span {
  font-family: var(--nh-font-mono);
  font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--nh-text-50); padding-right: 16px;
}
.ticker span::after { content: "\2192"; color: var(--nh-nico-pink); padding-left: 16px; }
@keyframes nh-scroll { to { transform: translateX(-50%); } }

/* --- Cards --------------------------------------------------------------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 40px; }
.card {
  background: var(--nh-card-1);
  border: 1px solid var(--nh-text-09);
  border-radius: 14px; padding: 28px;
}
.card--edged { border-left: 3px solid var(--nh-mode, var(--nh-text-32)); }
.card__label { color: var(--nh-boost); margin-bottom: 16px; }
.card--edged .card__label { color: var(--nh-mode, var(--nh-text-50)); }
.card h3 {
  font-family: var(--nh-font-display);
  text-transform: uppercase; font-weight: 400;
  font-size: 22px; line-height: 1.15;
  color: var(--nh-text-100); margin-bottom: 14px;
}
.card p { font-size: 15px; color: var(--nh-text-50); }
.card p b { color: var(--nh-text-84); }

/* --- Statement band ------------------------------------------------------ */
.statement { border-top: 1px solid var(--nh-text-09); border-bottom: 1px solid var(--nh-text-09); padding: 64px 0; }
.statement p {
  font-family: var(--nh-font-display);
  text-transform: uppercase; font-size: clamp(22px, 3vw, 34px);
  line-height: 1.18; color: var(--nh-text-100); max-width: 20em;
}
.statement .src { margin-top: 16px; }

/* --- Split sections ------------------------------------------------------ */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split h2 { font-size: clamp(34px, 4.6vw, 52px); line-height: 1.05; }
.split h2 .pink { color: var(--nh-nico-pink); }
.split p { margin-top: 20px; color: var(--nh-text-50); }
.split p b { color: var(--nh-text-84); }

/* --- Founder ------------------------------------------------------------- */
.founder {
  border-top: 1px solid var(--nh-text-09);
  border-bottom: 1px solid var(--nh-text-09);
  padding: 72px 0; text-align: center;
}
.video {
  position: relative; max-width: 760px; margin: 0 auto 40px;
  aspect-ratio: 16 / 9; border-radius: 16px; overflow: hidden;
  border: 1px solid var(--nh-text-09); background: var(--nh-card-1);
}
.video iframe { position: absolute; inset: 0; width: 100%; height: 100%; }
.founder__quote {
  font-family: var(--nh-font-display);
  text-transform: uppercase; font-weight: 400;
  font-size: clamp(26px, 3.6vw, 40px);
  color: var(--nh-text-100); max-width: 18em; margin: 0 auto;
}

/* --- Final + footer ------------------------------------------------------ */
.final { text-align: center; padding: 120px 0; }
.final h2 { font-size: clamp(40px, 6vw, 72px); line-height: 1.03; max-width: 12em; margin: 0 auto; }
.final h2 .accent { color: var(--nh-restore); }
.final p { margin: 26px auto 34px; max-width: 30em; color: var(--nh-text-50); }
.final__row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
footer {
  border-top: 1px solid var(--nh-text-09); padding: 26px 0;
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  font-family: var(--nh-font-mono);
  font-size: 11px; letter-spacing: 0.1em;
  color: var(--nh-text-32); text-transform: uppercase;
}

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; padding-top: 70px; }
  .heart { order: -1; transform: scale(0.8); }
  .grid-3, .split { grid-template-columns: 1fr; }
  section { padding: 72px 0; }

  /* .final and .founder carry their own padding, and a class selector beats the
     `section` rule above — so their DESKTOP padding survived into mobile. Between
     them that stacked to 193px of empty dark (72 + 120). Nothing was hidden and
     nothing failed to render; the spacing simply never scaled down. */
  .final { padding: 64px 0 72px; }
  .founder { padding: 48px 0; }

  /* The nav CTA no longer wraps, so give it room rather than squeezing it. */
  nav { gap: 12px; }
  .brand { flex: 1 1 auto; min-width: 0; }
  .brand__tag { display: none; }
}

@media (max-width: 420px) {
  .brand__name { font-size: 18px; }
  .cta { padding: 11px 18px; font-size: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .ticker { animation: none; }
  .heart__bar { animation: none; transform: scaleX(1); }
}

/* The wordmark carries the identity register — founder ruling 2026-07-28.
   Identity blue is for the mark itself, never for surrounding UI. */
.brand__name--mark { color: var(--nh-identity); }

/* The official mark, built bar by bar top-down — Animation A's signature. */
.nh-heart.is-building rect {
  transform: scaleX(0); transform-origin: center; transform-box: fill-box;
  animation: nh-heart-bar 400ms var(--nh-ease-signal) forwards;
  animation-delay: calc(var(--i) * 62ms);
}
@keyframes nh-heart-bar { to { transform: scaleX(1); } }
@media (prefers-reduced-motion: reduce) {
  .nh-heart.is-building rect { animation: none; transform: none; }
}