/* ============================================================
   Aflux Systems — corporate site
   Concept: "flux as current" — flowing gradient energy on a
   deep-ink base. Cyan→teal→lime current + warm coral accent.
   ============================================================ */

:root {
  /* Ink base */
  --ink-900: #070A12;
  --ink-800: #0B101C;
  --ink-700: #0E1524;
  --ink-600: #131C2E;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);

  /* Text */
  --fg: #EEF2F8;
  --fg-soft: #AEB8CC;
  --fg-mute: #6B7689;

  /* Flux current */
  --c-cyan: #22D3EE;
  --c-teal: #2DD4BF;
  --c-lime: #A3E635;
  --current: linear-gradient(100deg, var(--c-cyan), var(--c-teal) 52%, var(--c-lime));

  /* Warm accent (the product-line energy) */
  --coral: #FF7849;
  --coral-soft: #FF9A6E;

  /* Type */
  --font-display: "Clash Display", "Satoshi", system-ui, sans-serif;
  --font-body: "Satoshi", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", monospace;

  /* Space + shape */
  --maxw: 1180px;
  --gutter: clamp(1.25rem, 5vw, 4rem);
  --radius: 18px;
  --radius-sm: 12px;
  --ease: cubic-bezier(.22, 1, .36, 1);
}

/* ── Reset ─────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  background: var(--ink-900);
  color: var(--fg);
  line-height: 1.6;
  font-size: clamp(1rem, .96rem + .25vw, 1.1rem);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; padding: 0; }
button { font: inherit; cursor: pointer; }

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

.skip-link {
  position: absolute; left: 1rem; top: -100px; z-index: 200;
  background: var(--current); color: var(--ink-900); font-weight: 600;
  padding: .6rem 1rem; border-radius: 10px; transition: top .2s var(--ease);
}
.skip-link:focus { top: 1rem; }

/* ============================================================
   Flux field — animated atmosphere behind everything
   ============================================================ */
.flux-field {
  position: fixed; inset: 0; z-index: -1; overflow: hidden;
  background:
    radial-gradient(120% 90% at 100% 0%, rgba(34,211,238,.08), transparent 55%),
    radial-gradient(90% 80% at 0% 100%, rgba(163,230,53,.06), transparent 55%),
    var(--ink-900);
}
.flux-orb {
  position: absolute; border-radius: 50%; filter: blur(70px); opacity: .5;
  will-change: transform;
}
.flux-orb--1 { width: 46vw; height: 46vw; left: -8vw; top: -6vw;
  background: radial-gradient(circle, rgba(34,211,238,.45), transparent 65%);
  animation: drift1 24s var(--ease) infinite alternate; }
.flux-orb--2 { width: 40vw; height: 40vw; right: -10vw; top: 18vh;
  background: radial-gradient(circle, rgba(45,212,191,.38), transparent 65%);
  animation: drift2 30s var(--ease) infinite alternate; }
.flux-orb--3 { width: 38vw; height: 38vw; left: 24vw; bottom: -14vw;
  background: radial-gradient(circle, rgba(255,120,73,.22), transparent 65%);
  animation: drift3 28s var(--ease) infinite alternate; }

@keyframes drift1 { to { transform: translate(8vw, 10vh) scale(1.15); } }
@keyframes drift2 { to { transform: translate(-10vw, 6vh) scale(1.1); } }
@keyframes drift3 { to { transform: translate(6vw, -8vh) scale(1.2); } }

.grain {
  position: absolute; inset: -50%; opacity: .035; pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  --pad: .72rem 1.25rem;
  display: inline-flex; align-items: center; gap: .5rem;
  padding: var(--pad); border-radius: 999px; font-weight: 600;
  font-size: .95rem; border: 1px solid transparent; white-space: nowrap;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease),
              background .25s var(--ease), border-color .25s var(--ease);
}
.btn--lg { --pad: .9rem 1.6rem; font-size: 1rem; }
.btn--block { width: 100%; justify-content: center; }
.btn--accent {
  background: var(--coral); color: #2A0F06;
  box-shadow: 0 8px 26px -10px rgba(255,120,73,.7);
}
.btn--accent:hover { transform: translateY(-2px); background: var(--coral-soft);
  box-shadow: 0 14px 34px -10px rgba(255,120,73,.85); }
.btn--ghost {
  border-color: var(--line-strong); color: var(--fg);
  background: rgba(255,255,255,.02);
}
.btn--ghost:hover { transform: translateY(-2px); border-color: var(--c-teal);
  background: rgba(45,212,191,.08); }
.btn:focus-visible { outline: 2px solid var(--c-cyan); outline-offset: 3px; }

/* ============================================================
   Header / nav
   ============================================================ */
.site-header {
  position: sticky; top: 0; z-index: 100;
  transition: background .3s var(--ease), border-color .3s var(--ease), backdrop-filter .3s;
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
  background: rgba(7,10,18,.72); backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--line);
}
.nav { display: flex; align-items: center; gap: 1.5rem; padding-block: 1rem; }
.brand { display: inline-flex; align-items: center; gap: .6rem; font-family: var(--font-display); }
.brand__mark { flex: none; transition: transform .4s var(--ease); }
.brand:hover .brand__mark { transform: rotate(-6deg) scale(1.05); }
.brand__word { font-weight: 600; font-size: 1.2rem; letter-spacing: -.01em; }
.brand__sys {
  background: var(--current); -webkit-background-clip: text; background-clip: text;
  color: transparent; margin-left: .12em;
}
.nav__links { display: flex; gap: 1.6rem; margin-left: auto; font-size: .95rem; }
.nav__links a { color: var(--fg-soft); position: relative; padding-block: .25rem; }
.nav__links a::after {
  content: ""; position: absolute; left: 0; bottom: 0; height: 2px; width: 0;
  background: var(--current); transition: width .25s var(--ease);
}
.nav__links a:hover { color: var(--fg); }
.nav__links a:hover::after { width: 100%; }
.nav__cta { margin-left: .25rem; }

.nav__toggle { display: none; flex-direction: column; gap: 5px; background: none;
  border: 0; padding: 8px; margin-left: auto; }
.nav__toggle span { width: 24px; height: 2px; background: var(--fg); border-radius: 2px;
  transition: transform .3s var(--ease), opacity .2s; }
.nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav {
  display: none; flex-direction: column; gap: .25rem; padding: 0 var(--gutter);
  background: rgba(7,10,18,.95); backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  max-height: 0; overflow: hidden; transition: max-height .35s var(--ease), padding .35s var(--ease);
}
.mobile-nav.is-open { max-height: 360px; padding-block: 1rem 1.5rem; }
.mobile-nav a { padding: .8rem 0; color: var(--fg-soft); border-bottom: 1px solid var(--line); }
.mobile-nav a.btn { margin-top: .75rem; border-bottom: 0; color: #2A0F06; justify-content: center; }

/* ============================================================
   Typography helpers
   ============================================================ */
.eyebrow {
  display: inline-flex; align-items: center; gap: .6rem;
  font-family: var(--font-mono); font-size: .82rem; letter-spacing: .04em;
  color: var(--fg-soft); text-transform: uppercase; margin-bottom: 1.5rem;
}
.eyebrow__dot { width: 8px; height: 8px; border-radius: 50%; background: var(--current);
  box-shadow: 0 0 12px var(--c-teal); }
.section__eyebrow { font-family: var(--font-mono); font-size: .8rem; letter-spacing: .05em;
  color: var(--c-teal); text-transform: uppercase; margin-bottom: 1rem; }

.section__title {
  font-family: var(--font-display); font-weight: 600; line-height: 1.05;
  letter-spacing: -.02em; font-size: clamp(1.9rem, 1.1rem + 3vw, 3.2rem);
}
.section__lead { color: var(--fg-soft); max-width: 46ch; margin-top: 1rem; }

/* ============================================================
   Hero
   ============================================================ */
.hero { padding-block: clamp(4rem, 7vw, 7.5rem) clamp(3rem, 6vw, 6rem); }
.hero__title {
  font-family: var(--font-display); font-weight: 600;
  font-size: clamp(2.6rem, 1rem + 8vw, 6rem); line-height: .98; letter-spacing: -.03em;
  margin-bottom: 1.75rem;
}
.hero__title span { display: block; }
.reveal--accent {
  background: var(--current); -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.hero__lead { font-size: clamp(1.05rem, 1rem + .5vw, 1.3rem); color: var(--fg-soft);
  max-width: 56ch; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2.25rem; }

.hero__stats {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem;
  margin-top: clamp(3rem, 6vw, 5rem); padding-top: 2rem;
  border-top: 1px solid var(--line);
}
.hero__stats dt { font-family: var(--font-display); font-weight: 600; font-size: 1.15rem;
  color: var(--fg); }
.hero__stats dd { color: var(--fg-mute); font-size: .92rem; margin-top: .2rem; }

/* ============================================================
   Generic section
   ============================================================ */
.section { padding-block: clamp(3.5rem, 7vw, 6.5rem); position: relative; }
.section__head { max-width: 60ch; margin-bottom: clamp(2.5rem, 5vw, 4rem); }
.section--approach { border-block: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255,255,255,.012), transparent); }

/* ── Services ── */
.services { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }
.service {
  position: relative; padding: 2rem 1.75rem; border-radius: var(--radius);
  border: 1px solid var(--line); background: rgba(255,255,255,.018);
  overflow: hidden; transition: transform .3s var(--ease), border-color .3s var(--ease),
              background .3s var(--ease);
}
.service::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 3px; width: 100%;
  background: var(--current); transform: scaleX(0); transform-origin: left;
  transition: transform .4s var(--ease);
}
.service:hover { transform: translateY(-4px); border-color: var(--line-strong);
  background: rgba(255,255,255,.03); }
.service:hover::before { transform: scaleX(1); }
.service__num { font-family: var(--font-mono); font-size: .85rem; color: var(--c-teal); }
.service h3 { font-family: var(--font-display); font-weight: 600; font-size: 1.35rem;
  margin: .75rem 0 .65rem; letter-spacing: -.01em; }
.service p { color: var(--fg-soft); font-size: .98rem; }

/* ── Flow / approach ── */
.flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  background: var(--line); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; }
.flow__step { background: var(--ink-800); padding: 1.75rem 1.4rem; position: relative; }
.flow__step::after {
  content: "→"; position: absolute; right: -11px; top: 1.85rem; z-index: 2;
  color: var(--c-teal); font-size: 1.1rem;
}
.flow__step:last-child::after { display: none; }
.flow__label { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .08em;
  text-transform: uppercase; color: var(--fg-mute); }
.flow__step h3 { font-family: var(--font-display); font-weight: 600; font-size: 1.3rem;
  margin: .6rem 0 .5rem; }
.flow__step p { color: var(--fg-soft); font-size: .92rem; }

/* ── Spotlight / work ── */
.spotlight {
  display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(1.5rem, 4vw, 3rem);
  align-items: center; padding: clamp(1.75rem, 4vw, 3rem); border-radius: 24px;
  border: 1px solid var(--line-strong);
  background: linear-gradient(135deg, var(--ink-700), var(--ink-800));
  position: relative; overflow: hidden;
}
.spotlight::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(80% 120% at 100% 0%, rgba(34,211,238,.12), transparent 60%);
  pointer-events: none;
}
.spotlight__kicker { font-family: var(--font-mono); font-size: .8rem; color: var(--c-teal);
  text-transform: uppercase; letter-spacing: .05em; }
.spotlight__title { font-family: var(--font-display); font-weight: 600;
  font-size: clamp(1.8rem, 1rem + 2.5vw, 2.8rem); margin: .6rem 0 1rem; letter-spacing: -.02em; }
.spotlight__text { color: var(--fg-soft); max-width: 52ch; }
.spotlight__text em { color: var(--coral-soft); font-style: normal; }
.tag-row { display: flex; flex-wrap: wrap; gap: .5rem; margin: 1.4rem 0 1.6rem; }
.tag-row li { font-size: .82rem; font-family: var(--font-mono); color: var(--fg-soft);
  padding: .35rem .7rem; border: 1px solid var(--line-strong); border-radius: 999px; }
.spotlight__links { display: flex; flex-wrap: wrap; gap: .75rem; position: relative; z-index: 2; }

.spotlight__art {
  position: relative; aspect-ratio: 4/3; border-radius: 18px;
  background: radial-gradient(circle at 50% 120%, rgba(45,212,191,.25), transparent 60%),
              repeating-linear-gradient(90deg, rgba(255,255,255,.04) 0 2px, transparent 2px 46px),
              var(--ink-900);
  border: 1px solid var(--line); overflow: hidden;
  display: grid; place-items: center;
}
.pitch { position: absolute; inset: 12%; border: 2px solid rgba(255,255,255,.12);
  border-radius: 8px; }
.pitch__line--mid { position: absolute; left: 50%; top: 0; bottom: 0; width: 2px;
  background: rgba(255,255,255,.12); }
.pitch__circle { position: absolute; left: 50%; top: 50%; width: 28%; aspect-ratio: 1;
  transform: translate(-50%,-50%); border: 2px solid rgba(255,255,255,.12); border-radius: 50%; }
.pitch__ball { position: absolute; left: 50%; top: 50%; width: 16px; height: 16px;
  transform: translate(-50%,-50%); border-radius: 50%; background: var(--current);
  box-shadow: 0 0 20px var(--c-teal); animation: pulse 2.4s var(--ease) infinite; }
.spotlight__score { font-family: var(--font-display); font-weight: 700;
  font-size: clamp(3rem, 8vw, 5.5rem); background: var(--current);
  -webkit-background-clip: text; background-clip: text; color: transparent; opacity: .9; }
@keyframes pulse { 50% { transform: translate(-50%,-50%) scale(1.4); opacity: .7; } }

/* ── About ── */
.about { display: grid; grid-template-columns: 1.4fr .8fr; gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: start; }
.about__text p { color: var(--fg-soft); margin-top: 1rem; max-width: 56ch; }
.about__card { padding: 1.75rem; border-radius: var(--radius); border: 1px solid var(--line-strong);
  background: rgba(255,255,255,.02); }
.about__card-label { font-family: var(--font-mono); font-size: .75rem; text-transform: uppercase;
  letter-spacing: .06em; color: var(--fg-mute); margin-top: 1.1rem; }
.about__card-label:first-child { margin-top: 0; }
.about__card-value { font-family: var(--font-display); font-weight: 500; font-size: 1.25rem;
  margin-top: .15rem; }

/* ── Contact ── */
.section--contact { border-top: 1px solid var(--line); }
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4rem);
  align-items: start; }
.contact__intro p { color: var(--fg-soft); margin-top: 1rem; max-width: 44ch; }
.contact__details { margin-top: 2rem; display: grid; gap: 1.25rem; }
.contact__detail-label { display: block; font-family: var(--font-mono); font-size: .75rem;
  text-transform: uppercase; letter-spacing: .06em; color: var(--fg-mute); margin-bottom: .25rem; }
.contact__details a { color: var(--c-teal); }
.contact__details a:hover { color: var(--c-lime); }

.contact__form { display: grid; gap: 1.1rem; padding: clamp(1.5rem, 3vw, 2rem);
  border-radius: var(--radius); border: 1px solid var(--line-strong);
  background: rgba(255,255,255,.02); }
.field { display: grid; gap: .4rem; }
.field label { font-size: .9rem; color: var(--fg-soft); font-weight: 500; }
.field input, .field textarea {
  font: inherit; color: var(--fg); background: var(--ink-900);
  border: 1px solid var(--line-strong); border-radius: var(--radius-sm);
  padding: .8rem .9rem; transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
  resize: vertical;
}
.field input:focus, .field textarea:focus {
  outline: none; border-color: var(--c-teal);
  box-shadow: 0 0 0 3px rgba(45,212,191,.18);
}
.field.is-invalid input, .field.is-invalid textarea { border-color: var(--coral); }
.field__error { color: var(--coral-soft); font-size: .82rem; min-height: 1em; }
.form-status { font-size: .92rem; min-height: 1.2em; }
.form-status.is-ok { color: var(--c-lime); }
.form-status.is-err { color: var(--coral-soft); }

/* ============================================================
   Footer
   ============================================================ */
.site-footer { border-top: 1px solid var(--line); padding-block: 3rem;
  background: linear-gradient(180deg, transparent, rgba(255,255,255,.012)); }
.footer { display: grid; grid-template-columns: 1.5fr 1fr; gap: 2rem; align-items: start; }
.footer__brand .brand__word { font-family: var(--font-display); font-size: 1.3rem; }
.footer__brand p { color: var(--fg-mute); font-size: .9rem; margin-top: .5rem; }
.footer__nav { display: flex; gap: 1.5rem; flex-wrap: wrap; justify-content: flex-end; }
.footer__nav a { color: var(--fg-soft); font-size: .95rem; }
.footer__nav a:hover { color: var(--c-teal); }
.footer__legal { grid-column: 1 / -1; color: var(--fg-mute); font-size: .85rem;
  padding-top: 1.5rem; margin-top: .5rem; border-top: 1px solid var(--line); }

/* ============================================================
   Reveal animation (JS adds .is-visible)
   ============================================================ */
.reveal { opacity: 0; transform: translateY(22px); transition:
  opacity .7s var(--ease) var(--d, 0s), transform .7s var(--ease) var(--d, 0s); }
.reveal.is-visible { opacity: 1; transform: none; }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 900px) {
  .nav__links { display: none; }
  .nav__cta { display: none; }
  .nav__toggle { display: flex; }
  .mobile-nav { display: flex; }
  .services { grid-template-columns: 1fr; }
  .flow { grid-template-columns: 1fr 1fr; }
  .flow__step:nth-child(2)::after { display: none; }
  .spotlight { grid-template-columns: 1fr; }
  .spotlight__art { order: -1; }
  .about { grid-template-columns: 1fr; }
  .contact { grid-template-columns: 1fr; }
  .footer { grid-template-columns: 1fr; }
  .footer__nav { justify-content: flex-start; }
}
@media (max-width: 560px) {
  .hero__stats { grid-template-columns: 1fr; gap: 1rem; }
  .flow { grid-template-columns: 1fr; }
  .flow__step::after { display: none; }
}

/* ============================================================
   Motion & contrast preferences
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}