/* nucleustrade.ai — domain for sale
   Layout: Starlink minimalism. Black field, one huge domain name, thin rules,
   tracked uppercase labels, monochrome. The only motion is the nucleus and clean reveals. */

@font-face { font-family: "Barlow"; src: url("../fonts/barlow-latin-300-normal.woff2") format("woff2"); font-weight: 300; font-display: swap; }
@font-face { font-family: "Barlow"; src: url("../fonts/barlow-latin-400-normal.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Barlow"; src: url("../fonts/barlow-latin-500-normal.woff2") format("woff2"); font-weight: 500; font-display: swap; }
@font-face { font-family: "Barlow Semi Condensed"; src: url("../fonts/barlow-semi-condensed-latin-500-normal.woff2") format("woff2"); font-weight: 500; font-display: swap; }
@font-face { font-family: "Barlow Semi Condensed"; src: url("../fonts/barlow-semi-condensed-latin-600-normal.woff2") format("woff2"); font-weight: 600; font-display: swap; }

:root {
  --bg: #000;
  --panel: #0A0A0B;
  --line: rgba(255, 255, 255, .12);
  --line-2: rgba(255, 255, 255, .3);
  --text: #F4F5F6;
  --soft: #BFC3C8;
  --muted: #868B92;
  --warn: #FF8A7A;
  --font: "Barlow", "Helvetica Neue", Arial, sans-serif;
  --label: "Barlow Semi Condensed", "Barlow", "Helvetica Neue", Arial, sans-serif;
  --wrap: 1200px;
  --gutter: clamp(20px, 4vw, 48px);
  --ease: cubic-bezier(.16, 1, .3, 1);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: var(--font); font-size: 18px; line-height: 1.6; -webkit-font-smoothing: antialiased; overflow-x: hidden; }
a { color: inherit; }
::selection { background: var(--text); color: #000; }
:focus-visible { outline: 2px solid var(--text); outline-offset: 3px; }
.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding-left: max(var(--gutter), env(safe-area-inset-left, 0px)); padding-right: max(var(--gutter), env(safe-area-inset-right, 0px)); }
.skip { position: absolute; left: -999px; top: 12px; z-index: 100; background: var(--text); color: #000; padding: 8px 14px; }
.skip:focus { left: 12px; }

.label { display: flex; align-items: center; gap: 12px; margin: 0 0 24px; font-family: var(--label); font-weight: 500; font-size: 13px; letter-spacing: .24em; text-transform: uppercase; color: var(--muted); }
.dot { position: relative; display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--text); flex-shrink: 0; }
.dot::after { content: ""; position: absolute; inset: -5px; border-radius: 50%; border: 1px solid var(--text); opacity: 0; animation: ping 2.4s var(--ease) infinite; }
@keyframes ping { 0% { transform: scale(.4); opacity: .8; } 100% { transform: scale(1.6); opacity: 0; } }

/* Nav */
.nav { position: fixed; inset: 0 0 auto 0; z-index: 50; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: calc(22px + env(safe-area-inset-top, 0px)) max(var(--gutter), env(safe-area-inset-right, 0px)) 22px max(var(--gutter), env(safe-area-inset-left, 0px)); transition: background .5s var(--ease), padding .5s var(--ease), border-color .5s; border-bottom: 1px solid transparent; }
.nav.is-scrolled { background: rgba(0, 0, 0, .78); -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); border-bottom-color: var(--line); padding-top: calc(14px + env(safe-area-inset-top, 0px)); padding-bottom: 14px; }
.nav__logo { font-family: var(--label); font-weight: 600; font-size: 15px; letter-spacing: .32em; text-decoration: none; }
.nav__logo span { color: var(--muted); }
.nav__cta { font-family: var(--label); font-weight: 600; font-size: 13px; letter-spacing: .22em; text-transform: uppercase; text-decoration: none; padding-bottom: 3px; background: linear-gradient(var(--text), var(--text)) 0 100% / 0 1px no-repeat; transition: background-size .5s var(--ease); }
.nav__cta:hover { background-size: 100% 1px; }

/* Buttons: thin rectangles, fill sweep on hover */
.btn { position: relative; isolation: isolate; overflow: hidden; display: inline-flex; align-items: center; justify-content: center; gap: 14px; min-height: 52px; padding: 0 30px; border: 1px solid var(--line-2); border-radius: 2px; background: transparent; color: var(--text); font-family: var(--label); font-weight: 600; font-size: 14px; letter-spacing: .2em; text-transform: uppercase; text-decoration: none; cursor: pointer; transition: color .5s var(--ease), border-color .5s var(--ease); }
.btn::before { content: ""; position: absolute; inset: 0; z-index: -1; background: var(--text); transform: translateY(101%); transition: transform .5s var(--ease); }
.btn:hover { color: #000; border-color: var(--text); }
.btn:hover::before { transform: none; }
.btn--solid { background: var(--text); border-color: var(--text); color: #000; }
.btn--solid::before { background: var(--bg); }
.btn--solid:hover { color: var(--text); }
.btn--wide { width: 100%; }
.btn__arrow { position: relative; width: 22px; height: 1px; background: currentColor; transition: transform .5s var(--ease); }
.btn__arrow::after { content: ""; position: absolute; right: 0; top: -4px; width: 9px; height: 9px; border: solid currentColor; border-width: 1px 1px 0 0; transform: rotate(45deg); }
.btn:hover .btn__arrow { transform: translateX(5px); }
.btn[disabled] { opacity: .6; cursor: progress; }
.btn.is-loading .btn__arrow { animation: slide 1s var(--ease) infinite; }
@keyframes slide { 0% { transform: translateX(-6px); opacity: 0; } 50% { opacity: 1; } 100% { transform: translateX(8px); opacity: 0; } }

/* Hero */
.hero { position: relative; min-height: min(100svh, 1000px); display: flex; flex-direction: column; justify-content: flex-end; padding: 150px 0 0; overflow: hidden; }
.hero__nucleus { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.hero__inner { position: relative; width: 100%; max-width: var(--wrap); margin: 0 auto; padding-left: max(var(--gutter), env(safe-area-inset-left, 0px)); padding-right: max(var(--gutter), env(safe-area-inset-right, 0px)); }
.domain { margin: 0 0 30px; font-weight: 300; font-size: clamp(42px, 13vw, 158px); line-height: .95; letter-spacing: -.035em; white-space: nowrap; }
.domain__tld { color: var(--muted); }
.domain .ch { display: inline-block; }
.hero__lead { margin: 0 0 40px; max-width: 54ch; color: var(--soft); font-size: clamp(17px, 1.5vw, 20px); font-weight: 300; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 14px; }
.trust { position: relative; width: 100%; max-width: var(--wrap); margin: 90px auto 0; padding: 26px max(var(--gutter), env(safe-area-inset-right, 0px)) 30px max(var(--gutter), env(safe-area-inset-left, 0px)); list-style: none; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; border-top: 1px solid var(--line); color: var(--muted); font-size: 15px; }
.trust li { display: flex; align-items: center; gap: 12px; min-width: 0; }
.trust b { color: var(--text); font-weight: 500; }
.tick { position: relative; flex-shrink: 0; width: 18px; height: 18px; border: 1px solid var(--line-2); border-radius: 50%; }
.tick::after { content: ""; position: absolute; left: 6px; top: 3px; width: 4px; height: 8px; border: solid var(--text); border-width: 0 1px 1px 0; transform: rotate(45deg); }

/* Intro sequence */
.js .js-in { opacity: 0; transform: translateY(18px); transition: opacity 1.1s var(--ease), transform 1.1s var(--ease); transition-delay: calc(var(--d, 0) * 110ms + 150ms); }
.js .is-ready .js-in { opacity: 1; transform: none; }
.js .domain .ch { opacity: 0; transform: translateY(.35em); filter: blur(10px); transition: opacity 1s var(--ease), transform 1.2s var(--ease), filter 1s var(--ease); }
.js .is-ready .domain .ch { opacity: 1; transform: none; filter: none; }

/* Scenes */
.scene { padding: clamp(100px, 13vw, 170px) 0; border-top: 1px solid var(--line); }
.scene__title { margin: 0 0 56px; max-width: 18ch; font-weight: 400; font-size: clamp(36px, 5vw, 64px); line-height: 1.02; letter-spacing: -.02em; text-wrap: balance; }
.js .reveal { opacity: 0; transform: translateY(28px); transition: opacity 1s var(--ease), transform 1s var(--ease); }
.js .reveal.is-in { opacity: 1; transform: none; }

.facts { margin: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--line); }
.fact { padding: 36px 32px 40px 0; min-width: 0; }
.fact + .fact { padding-left: 32px; border-left: 1px solid var(--line); }
.fact dt { margin-bottom: 14px; font-weight: 300; font-size: clamp(34px, 3.6vw, 48px); line-height: 1; letter-spacing: -.02em; }
.fact dd { margin: 0; color: var(--muted); font-size: 16px; }
.fits { margin-top: 64px; display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 24px; align-items: baseline; }
.fits__k { margin: 0; font-family: var(--label); font-weight: 500; font-size: 13px; letter-spacing: .24em; text-transform: uppercase; color: var(--muted); }
.fits__list { margin: 0; padding: 0; list-style: none; display: flex; flex-wrap: wrap; gap: 10px; }
.fits__list li { padding: 8px 16px; border: 1px solid var(--line); border-radius: 999px; font-size: 15px; color: var(--soft); transition: border-color .4s var(--ease), color .4s var(--ease); }
.fits__list li:hover { border-color: var(--line-2); color: var(--text); }

/* Offer */
.offer { background: var(--panel); }
.offer__grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: clamp(40px, 7vw, 110px); align-items: start; }
.offer__note { margin: -24px 0 48px; max-width: 42ch; color: var(--muted); font-size: 16px; }
.specs { margin: 0; border-top: 1px solid var(--line); }
.specs div { display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.specs dt { font-family: var(--label); font-weight: 500; font-size: 12px; letter-spacing: .22em; text-transform: uppercase; color: var(--muted); padding-top: 3px; }
.specs dd { margin: 0; display: flex; align-items: center; gap: 10px; font-size: 16px; }

.form { position: relative; display: grid; gap: 34px; padding: clamp(28px, 4vw, 48px); border: 1px solid var(--line); background: var(--bg); }
.amount label, .field label { display: block; font-family: var(--label); font-weight: 500; font-size: 12px; letter-spacing: .22em; text-transform: uppercase; color: var(--muted); }
.amount__row { display: flex; align-items: baseline; gap: 14px; margin-top: 8px; border-bottom: 1px solid var(--line-2); transition: border-color .3s var(--ease); }
.amount__row:focus-within { border-bottom-color: var(--text); }
.amount select { flex-shrink: 0; appearance: none; -webkit-appearance: none; padding: 6px 22px 6px 0; border: 0; background: transparent url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%23868B92'/%3E%3C/svg%3E") no-repeat right center; color: var(--soft); font-family: var(--label); font-weight: 600; font-size: 14px; letter-spacing: .14em; cursor: pointer; }
.amount select option { background: var(--panel); color: var(--text); }
.amount input { flex: 1; min-width: 0; width: 100%; padding: 4px 0 10px; border: 0; background: transparent; color: var(--text); font-family: var(--font); font-weight: 300; font-size: clamp(44px, 6vw, 72px); line-height: 1.1; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.amount input::placeholder { color: var(--line-2); }
.amount input:focus, .field input:focus, .field textarea:focus, .amount select:focus { outline: none; }
.amount.is-bad .amount__row, .amount.is-low .amount__row { border-bottom-color: var(--warn); }
.amount__min { display: flex; align-items: flex-start; gap: 10px; margin: 12px 0 0; color: var(--soft); font-size: 14px; line-height: 1.5; animation: fadeIn .4s var(--ease) both; }
.amount__min b { color: var(--text); font-weight: 500; }
.amount__min.is-bad, .amount__min.is-bad b { color: var(--warn); }
.amount__i { flex-shrink: 0; display: grid; place-items: center; width: 17px; height: 17px; margin-top: 2px; border: 1px solid currentColor; border-radius: 50%; font-family: var(--label); font-weight: 600; font-size: 11px; line-height: 1; }

.fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 26px 22px; }
.field { display: grid; gap: 6px; min-width: 0; }
.field--full { grid-column: 1 / -1; }
.field .opt { color: var(--muted); opacity: .7; letter-spacing: .1em; }
.field input, .field textarea { width: 100%; padding: 10px 0; border: 0; border-bottom: 1px solid var(--line-2); border-radius: 0; background: transparent; color: var(--text); font: inherit; font-size: 17px; transition: border-color .3s var(--ease); resize: vertical; }
.field textarea { min-height: 80px; line-height: 1.5; }
.field input::placeholder, .field textarea::placeholder { color: var(--muted); opacity: .6; }
.field input:focus, .field textarea:focus { border-bottom-color: var(--text); }
.field.is-bad input { border-bottom-color: var(--warn); }
.field__err { margin: 2px 0 0; color: var(--warn); font-size: 13px; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form__status { margin: -18px 0 0; min-height: 1em; color: var(--muted); font-size: 14px; }
.form__status.is-bad { color: var(--warn); }
.form__status a, .form__status button { color: var(--text); }

.sent { position: absolute; inset: 0; z-index: 2; display: flex; flex-direction: column; justify-content: center; align-items: flex-start; gap: 18px; padding: clamp(28px, 4vw, 56px); background: var(--bg); animation: fadeIn .8s var(--ease) both; }
.sent h3 { margin: 0; font-weight: 300; font-size: clamp(38px, 4.4vw, 56px); line-height: 1; letter-spacing: -.02em; outline: none; }
.sent p { margin: 0; max-width: 38ch; color: var(--muted); }
.sent b { color: var(--text); font-weight: 500; overflow-wrap: anywhere; }
.sent__mark { position: relative; width: 60px; height: 60px; border: 1px solid var(--text); border-radius: 50%; animation: pop .9s var(--ease) both; }
.sent__mark::after { content: ""; position: absolute; left: 22px; top: 16px; width: 12px; height: 22px; border: solid var(--text); border-width: 0 1px 1px 0; transform: rotate(45deg); }
@keyframes pop { from { transform: scale(.5); opacity: 0; } }
@keyframes fadeIn { from { opacity: 0; } }
.linkbtn { padding: 0 0 3px; border: 0; border-bottom: 1px solid var(--line-2); background: none; color: var(--soft); font-family: var(--label); font-weight: 600; font-size: 13px; letter-spacing: .2em; text-transform: uppercase; cursor: pointer; }
.linkbtn:hover { color: var(--text); border-color: var(--text); }

/* Process */
.steps { margin: 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--line); }
.step { position: relative; padding: 34px 28px 10px 0; min-width: 0; }
.step + .step { padding-left: 28px; border-left: 1px solid var(--line); }
.step::before { content: ""; position: absolute; top: -1px; left: 0; width: 0; height: 1px; background: var(--text); transition: width 1.4s var(--ease) .3s; }
.step.is-in::before { width: 100%; }
.step__n { font-family: var(--label); font-weight: 500; font-size: 13px; letter-spacing: .22em; color: var(--muted); }
.step h3 { margin: 18px 0 10px; font-weight: 400; font-size: 26px; letter-spacing: -.01em; }
.step p { margin: 0; color: var(--muted); font-size: 16px; }

/* Footer */
.footer { padding: 30px 0 calc(30px + env(safe-area-inset-bottom, 0px)); border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
.footer__inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 24px; }
.copy { padding: 0; border: 0; background: none; color: var(--soft); font: inherit; cursor: pointer; border-bottom: 1px solid var(--line-2); }
.copy:hover { color: var(--text); border-color: var(--text); }
.toast { position: fixed; left: 50%; bottom: calc(28px + env(safe-area-inset-bottom, 0px)); z-index: 80; transform: translate(-50%, 20px); opacity: 0; pointer-events: none; background: var(--text); color: #000; font-family: var(--label); font-weight: 600; font-size: 12px; letter-spacing: .2em; text-transform: uppercase; padding: 12px 20px; transition: all .4s var(--ease); }
.toast.is-on { opacity: 1; transform: translate(-50%, 0); }

/* Responsive */
@media (max-width: 960px) {
  .offer__grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .step:nth-child(3) { padding-left: 0; border-left: 0; }
  .step:nth-child(n+3) { padding-top: 40px; }
  .fits { grid-template-columns: 1fr; gap: 16px; }
}
@media (max-width: 720px) {
  .trust { grid-template-columns: 1fr; gap: 14px; margin-top: 64px; }
  .facts { grid-template-columns: 1fr; }
  .fact, .fact + .fact { padding: 28px 0; border-left: 0; }
  .fact + .fact { border-top: 1px solid var(--line); }
  .fields { grid-template-columns: 1fr; }
  .hero { padding-top: 130px; }
}
@media (max-width: 540px) {
  body { font-size: 17px; }
  .nav__logo { font-size: 13px; letter-spacing: .24em; }
  .nav__cta { font-size: 12px; letter-spacing: .16em; }
  .hero__cta .btn { width: 100%; }
  .steps { grid-template-columns: 1fr; }
  .step, .step + .step, .step:nth-child(n+3) { padding: 28px 0 8px; border-left: 0; }
  .specs div { grid-template-columns: 96px minmax(0, 1fr); }
  .form { padding: 24px 20px 28px; margin-left: calc(var(--gutter) * -0.4); margin-right: calc(var(--gutter) * -0.4); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .js-in, .js .reveal, .js .domain .ch { opacity: 1 !important; transform: none !important; filter: none !important; }
  .step::before { width: 100%; }
}