/* ————————————————————————————————
   N1AC — Neuron One Angel Collective
   Near-pure-text. Dark. Restrained.
———————————————————————————————— */

:root {
  --bg: #0b0b0d;
  --ink: #e8e4dc;
  --ink-dim: #9a958b;
  --ink-faint: #55524c;
  --hairline: #232227;
  /* Brand fonts carried over from the previous site:
     headings Manrope 500 / -0.02em, body Poppins 400. */
  --heading: "Manrope", "Segoe UI", Helvetica, Arial, sans-serif;
  --body: "Poppins", "Segoe UI", Helvetica, Arial, sans-serif;
  --label: "Manrope", "Segoe UI", Helvetica, Arial, sans-serif;
  --measure: 34em;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  position: relative;
  overflow-x: hidden;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--body);
  font-weight: 400;
  font-size: clamp(1rem, 0.94rem + 0.28vw, 1.1rem);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: var(--ink); color: var(--bg); }

a { color: inherit; }

em { font-style: italic; }
strong { font-weight: 500; }

/* ——— nav ——— */

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.4rem 2rem;
  z-index: 10;
  mix-blend-mode: difference;
}

.nav__mark {
  font-family: var(--heading);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-decoration: none;
  opacity: 0.9;
}

.nav__links {
  display: flex;
  gap: 1.6rem;
}

.nav__links a {
  font-family: var(--label);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  text-decoration: none;
  opacity: 0.65;
  transition: opacity 0.3s ease;
}
.nav__links a:hover { opacity: 1; }

/* ——— hero ——— */

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 0 1.5rem;
}

/* ——— background word field ——— */

/* Spans the whole document rather than just the hero, so the vocabulary
   keeps drifting behind every section as you scroll. */
.wordfield {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

/* Content sits above the field. */
.nav, main, .footer { position: relative; z-index: 1; }

.wordfield span {
  position: absolute;
  font-family: var(--label);
  font-weight: 500;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  white-space: nowrap;
  color: var(--ink);
  opacity: 0;
  animation: symbol-pulse var(--dur, 14s) ease-in-out var(--delay, 0s) infinite;
}

/* The brand mark sits above the vocabulary: heavier, tighter, brighter. */
.wordfield span.is-brand {
  font-family: var(--heading);
  font-weight: 600;
  letter-spacing: 0.16em;
}

@keyframes symbol-pulse {
  0%, 100% { opacity: 0; }
  50% { opacity: var(--peak, 0.07); }
}

.hero__inner {
  position: relative;
  text-align: center;
  max-width: 46em;
}

.hero__title {
  font-family: var(--heading);
  font-size: clamp(1.9rem, 1.15rem + 4vw, 3.8rem);
  font-weight: 500;
  line-height: 1.22;
  letter-spacing: -0.02em;
  opacity: 0;
  animation: rise 1.6s 0.3s ease forwards;
}

.hero__sub {
  margin-top: 2.2rem;
  font-family: var(--label);
  font-size: 0.74rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--ink-dim);
  opacity: 0;
  animation: rise 1.6s 1.1s ease forwards;
}

.hero__scroll {
  position: absolute;
  bottom: 2.2rem;
  left: 50%;
  color: var(--ink-faint);
  font-size: 0.9rem;
  opacity: 0;
  animation: rise-scroll 1.6s 2s ease forwards;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes rise-scroll {
  from { opacity: 0; transform: translate(-50%, 14px); }
  to   { opacity: 1; transform: translate(-50%, 0); }
}

/* ——— sections ——— */

.section {
  max-width: var(--measure);
  margin: 0 auto;
  padding: clamp(7rem, 14vh, 11rem) 1.5rem 0;
}

.section--contact {
  padding-bottom: clamp(7rem, 14vh, 11rem);
}

.section::before {
  content: "";
  display: block;
  width: 2.4rem;
  border-top: 1px solid var(--hairline);
  margin-bottom: 2.6rem;
}

.section__label {
  display: flex;
  align-items: baseline;
  gap: 1.1rem;
  font-family: var(--label);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 2.6rem;
}

.section__num {
  color: var(--ink-dim);
  letter-spacing: 0.14em;
}

.section h2 {
  font-family: var(--heading);
  font-size: clamp(1.5rem, 1.15rem + 1.5vw, 2.2rem);
  font-weight: 500;
  line-height: 1.32;
  letter-spacing: -0.02em;
  margin-bottom: 2.4rem;
}

.section__body { color: var(--ink-dim); }
.section__body p + p { margin-top: 1.5em; }

.section__claim {
  color: var(--ink);
  font-size: 1.12em;
}

.section__refrain {
  color: var(--ink);
  font-style: italic;
  font-size: 1.15em;
  letter-spacing: 0.01em;
}

/* ——— call to action ——— */

.cta { margin-top: 2.4em !important; }

.cta a {
  font-family: var(--label);
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--ink-faint);
  padding-bottom: 0.4em;
  transition: border-color 0.3s ease;
}
.cta a:hover { border-color: var(--ink); }
.cta a::after {
  content: "\2192";
  margin-left: 0.7em;
  color: var(--ink-faint);
  transition: color 0.3s ease;
}
.cta a:hover::after { color: var(--ink); }

/* ——— statement ——— */

.statement {
  max-width: var(--measure);
  margin: 0 auto;
  padding: clamp(9rem, 20vh, 15rem) 1.5rem clamp(3rem, 6vh, 5rem);
  text-align: center;
}

.statement p {
  font-family: var(--heading);
  font-size: clamp(1.45rem, 1.05rem + 1.6vw, 2.3rem);
  font-weight: 500;
  line-height: 1.35;
  letter-spacing: -0.02em;
}

/* ——— contact ——— */

.contact {
  display: grid;
  grid-template-columns: 6.5rem 1fr;
  align-items: baseline;
  row-gap: 1.1rem;
}

.contact dt {
  font-family: var(--label);
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.contact dd {
  font-family: var(--label);
  font-size: 0.92rem;
  letter-spacing: 0.04em;
  color: var(--ink);
}

.contact dd a {
  text-decoration: none;
  border-bottom: 1px solid var(--ink-faint);
  padding-bottom: 0.15em;
  transition: border-color 0.3s ease;
}
.contact dd a:hover { border-color: var(--ink); }

/* ——— interior page head ——— */

.page-head {
  max-width: var(--measure);
  margin: 0 auto;
  padding: clamp(9rem, 22vh, 13rem) 1.5rem 0;
}

.page-head__label {
  font-family: var(--label);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 2.2rem;
}

.page-head h1 {
  font-family: var(--heading);
  font-size: clamp(1.75rem, 1.25rem + 1.9vw, 2.7rem);
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 1.6rem;
}

.page-head__sub { color: var(--ink-dim); }

/* ——— forms ——— */

.section--form { padding-top: clamp(3.5rem, 8vh, 5rem); padding-bottom: clamp(7rem, 14vh, 11rem); }
.section--form::before { display: none; }

.field { margin-bottom: 2.6rem; }

.field label {
  display: block;
  font-family: var(--label);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 0.9rem;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--hairline);
  border-radius: 0;
  padding: 0.55rem 0 0.7rem;
  color: var(--ink);
  font-family: var(--body);
  font-weight: 400;
  font-size: 1rem;
  line-height: 1.6;
  transition: border-color 0.3s ease;
}

.field textarea { resize: vertical; }

.field input::placeholder,
.field textarea::placeholder { color: var(--ink-faint); }

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-bottom-color: var(--ink);
}

.field select {
  appearance: none;
  cursor: pointer;
  background-image: linear-gradient(45deg, transparent 50%, var(--ink-faint) 50%),
                    linear-gradient(135deg, var(--ink-faint) 50%, transparent 50%);
  background-position: right 0.7rem center, right 0.35rem center;
  background-size: 0.35rem 0.35rem, 0.35rem 0.35rem;
  background-repeat: no-repeat;
  padding-right: 1.8rem;
}

.field select option { background: var(--bg); color: var(--ink); }

.field__hint {
  margin-top: 0.7rem;
  font-size: 0.85rem;
  color: var(--ink-faint);
}

/* checkbox */

.field--check { margin-top: 3.2rem; }

.check {
  display: flex !important;
  align-items: flex-start;
  gap: 0.8rem;
  font-family: var(--body) !important;
  font-size: 0.95rem !important;
  letter-spacing: 0 !important;
  text-transform: none !important;
  color: var(--ink-dim) !important;
  line-height: 1.6;
  cursor: pointer;
}

.check input {
  width: auto;
  flex: none;
  margin-top: 0.45em;
  accent-color: var(--ink);
}

/* honeypot */

.hp { position: absolute; left: -9999px; opacity: 0; }

/* submit button */

.btn {
  margin-top: 1rem;
  background: transparent;
  border: 1px solid var(--ink-faint);
  border-radius: 2px;
  padding: 0.9rem 2.4rem;
  color: var(--ink);
  font-family: var(--label);
  font-size: 0.75rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  cursor: pointer;
  transition: border-color 0.3s ease, background 0.3s ease, color 0.3s ease;
}

.btn:hover { border-color: var(--ink); background: var(--ink); color: var(--bg); }
.btn:focus-visible { outline: 1px solid var(--ink); outline-offset: 3px; }

/* ——— thanks ——— */

.thanks {
  min-height: 78svh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 8rem 1.5rem 4rem;
}

.thanks__mark {
  font-size: 1.6rem;
  color: var(--ink-faint);
  margin-bottom: 2rem;
}

.thanks h1 {
  font-family: var(--heading);
  font-size: clamp(1.75rem, 1.25rem + 1.9vw, 2.7rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-bottom: 1.4rem;
}

.thanks__sub { color: var(--ink-dim); max-width: 26em; margin: 0 auto; }

/* ——— footer ——— */

.footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--measure);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 3rem;
  border-top: 1px solid var(--hairline);
  color: var(--ink-faint);
}

.footer__mark { font-family: var(--heading); font-size: 1.1rem; }

.footer__note {
  font-family: var(--label);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
}

/* ——— reveal on scroll ——— */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 1.1s ease, transform 1.1s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ——— narrow screens ——— */

@media (max-width: 640px) {
  .nav { padding: 1.2rem 1.4rem; }
  .nav__links { gap: 1.1rem; }
  .nav__links a { font-size: 0.66rem; letter-spacing: 0.16em; }
  .hero__title br { display: none; }
  .contact { grid-template-columns: 1fr; row-gap: 0.4rem; }
  .contact dd { margin-bottom: 1rem; }
}

/* ——— motion preferences ——— */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero__title, .hero__sub, .hero__scroll { animation: none; opacity: 1; transform: none; }
  .hero__scroll { transform: translateX(-50%); }
  .wordfield span { animation: none; opacity: 0.05; }
  .wordfield span.is-brand { opacity: 0.14; }
  .reveal { opacity: 1; transform: none; transition: none; }
}