:root {
  --ink: #eaf3ff;
  --ink-dim: rgba(215, 232, 255, 0.6);
  --accent: #4ea6ff;
  --accent-2: #8fd3ff;
  --maxw: 1140px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100%;
  color: var(--ink);
  font-family: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  letter-spacing: -0.01em;
  overflow-x: hidden;

  /* Solid black so the clip's own black background melts into the page and
     the framed video doesn't read as a card in the centre. */
  background: #000;
}

/* Vignette — sits above the video, below all text */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  background: radial-gradient(120% 100% at 50% 50%, transparent 58%, rgba(2, 2, 8, 0.6) 100%);
}

/* ---------- Stacking order ----------
   1 canvas · 2 vignette · 3 hero/captions/content · 8 scrubline · 9 nav · 50 loader */

/* ---------- Three.js canvas ---------- */
#scene {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  height: 100svh;
  display: block;
  z-index: 1;
  opacity: 0; /* set to 1 by JS once frames are ready; loader's fade-out reveals it */
  transform-origin: center;
  will-change: filter, opacity, transform;
}

/* ---------- Act 1 scroll range ---------- */
.scroll-track { height: 560vh; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55em;
  padding: 0.85em 1.5em;
  border-radius: 999px;
  font-weight: 600;
  font-size: 14px;
  line-height: 1;
  color: #04101f;
  text-decoration: none;
  white-space: nowrap;
  background: linear-gradient(180deg, #a9deff, #4ea6ff);
  box-shadow: 0 10px 30px rgba(78, 166, 255, 0.32);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 16px 42px rgba(78, 166, 255, 0.5); }
.btn--sm { padding: 0.7em 1.15em; font-size: 13px; }
.btn--lg { font-size: 16px; padding: 1.05em 1.9em; }

/* ---------- Nav ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 9;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px clamp(20px, 4vw, 44px);
  opacity: 0;
  transform: translateY(-14px);
  pointer-events: none;
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
  background: linear-gradient(180deg, rgba(3, 6, 14, 0.72), rgba(3, 6, 14, 0));
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.nav.is-visible { opacity: 1; transform: none; pointer-events: auto; }
.nav__brand {
  font-weight: 700;
  letter-spacing: 0.28em;
  font-size: 15px;
  color: var(--ink);
  text-decoration: none;
}
.nav__links { display: flex; align-items: center; gap: clamp(14px, 3vw, 28px); }
.nav__links > a:not(.btn) {
  color: var(--ink-dim);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.25s var(--ease);
}
.nav__links > a:not(.btn):hover { color: var(--ink); }

/* ---------- Hero ---------- */
.hero {
  position: fixed;
  z-index: 3;
  left: 0;
  right: 0;
  top: clamp(28px, 8vh, 88px);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 0 24px;
  pointer-events: none;
  will-change: transform, opacity, filter;
}
.hero__eyebrow {
  margin: 0 0 14px;
  font-size: clamp(11px, 1.4vw, 13px);
  text-transform: uppercase;
  letter-spacing: 0.42em;
  color: var(--accent);
  font-weight: 600;
}
.hero__title {
  margin: 0;
  font-weight: 700;
  line-height: 0.98;
  font-size: clamp(38px, 8vw, 104px);
  letter-spacing: -0.03em;
  background: linear-gradient(180deg, #ffffff 0%, #cfe6ff 60%, #6fb0f2 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 20px 80px rgba(60, 132, 232, 0.4);
}
.hero__sub {
  margin: 22px 0 0;
  max-width: 34ch;
  font-size: clamp(14px, 1.8vw, 18px);
  color: var(--ink-dim);
  line-height: 1.5;
}
.hero__cue {
  margin-top: 34px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--ink-dim);
}
.hero__arrow {
  width: 1px;
  height: 42px;
  background: linear-gradient(180deg, var(--accent), transparent);
  position: relative;
  animation: cue 2.1s var(--ease) infinite;
}
.hero__arrow::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 7px;
  height: 7px;
  border-right: 1px solid var(--accent);
  border-bottom: 1px solid var(--accent);
  transform: translateX(-50%) rotate(45deg);
}
@keyframes cue {
  0%, 100% { opacity: 0.35; transform: translateY(-4px); }
  50% { opacity: 1; transform: translateY(4px); }
}

/* ---------- Captions (Act 1) ---------- */
.captions { position: fixed; inset: 0; z-index: 3; pointer-events: none; }
.caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: clamp(72px, 14vh, 150px);
  padding: 0 32px;
  text-align: center;
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
.caption.is-active { opacity: 1; transform: translateY(0); }
.caption h2 {
  margin: 0 auto 10px;
  font-size: clamp(22px, 3.4vw, 38px);
  font-weight: 650;
  letter-spacing: -0.02em;
}
.caption p {
  margin: 0 auto;
  max-width: 46ch;
  color: var(--ink-dim);
  font-size: clamp(13px, 1.6vw, 16px);
  line-height: 1.55;
}

/* ---------- Scrubline ---------- */
.scrubline {
  position: fixed;
  z-index: 8;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: rgba(255, 255, 255, 0.06);
  transition: opacity 0.4s var(--ease);
}
.scrubline span {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 18px rgba(78, 166, 255, 0.7);
}

/* ---------- Act 2 content ---------- */
.content { position: relative; z-index: 3; }

.reveal { opacity: 0; transform: translateY(34px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }

.kicker {
  margin: 0 0 14px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.32em;
  font-size: 12px;
  font-weight: 600;
}

.services {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(90px, 16vh, 180px) clamp(20px, 5vw, 40px) clamp(40px, 8vh, 80px);
}
.section-head { max-width: 720px; margin: 0 auto clamp(40px, 7vh, 72px); text-align: center; }
.section-title {
  margin: 0;
  font-size: clamp(30px, 5vw, 54px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.025em;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(16px, 2vw, 24px);
}

.card {
  padding: clamp(22px, 3vw, 30px);
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.015));
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease), border-color 0.3s var(--ease), background 0.3s var(--ease);
}
.services.is-in .card { opacity: 1; transform: none; }
.services.is-in .card:nth-child(2) { transition-delay: 0.05s; }
.services.is-in .card:nth-child(3) { transition-delay: 0.1s; }
.services.is-in .card:nth-child(4) { transition-delay: 0.15s; }
.services.is-in .card:nth-child(5) { transition-delay: 0.2s; }
.services.is-in .card:nth-child(6) { transition-delay: 0.25s; }
.card:hover {
  border-color: rgba(78, 166, 255, 0.4);
  background: linear-gradient(180deg, rgba(78, 166, 255, 0.08), rgba(255, 255, 255, 0.02));
}
.card__icon {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(78, 166, 255, 0.12);
  color: var(--accent);
  margin-bottom: 18px;
}
.card__icon svg { width: 22px; height: 22px; }
.card h3 { margin: 0 0 8px; font-size: 19px; font-weight: 650; letter-spacing: -0.01em; }
.card p { margin: 0; color: var(--ink-dim); font-size: 14.5px; line-height: 1.55; }

/* ---------- CTA ---------- */
.cta {
  max-width: 780px;
  margin: 0 auto;
  padding: clamp(80px, 15vh, 170px) clamp(20px, 5vw, 40px);
  text-align: center;
}
.cta__title {
  margin: 0;
  font-size: clamp(32px, 6vw, 64px);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.03em;
  background: linear-gradient(180deg, #ffffff 0%, #cfe6ff 62%, #6fb0f2 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.cta__sub { margin: 20px auto 34px; max-width: 46ch; color: var(--ink-dim); font-size: clamp(15px, 2vw, 18px); line-height: 1.5; }

/* ---------- Footer ---------- */
.footer {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 44px clamp(20px, 5vw, 40px) 56px;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  display: flex;
  flex-wrap: wrap;
  gap: 18px 32px;
  align-items: center;
  justify-content: space-between;
  color: var(--ink-dim);
  font-size: 13px;
}
.footer__brand { display: flex; flex-direction: column; gap: 6px; }
.footer__wordmark { font-weight: 700; letter-spacing: 0.28em; color: var(--ink); font-size: 14px; }
.footer__tag { max-width: 40ch; }
.footer__links { display: flex; gap: 22px; }
.footer__links a { color: var(--ink-dim); text-decoration: none; transition: color 0.25s var(--ease); }
.footer__links a:hover { color: var(--ink); }

/* ---------- Loader ---------- */
.loader {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  background: #000;
  transition: opacity 0.7s var(--ease), visibility 0.7s;
}
.loader.is-done { opacity: 0; visibility: hidden; }
.loader__inner { display: flex; flex-direction: column; align-items: center; gap: 18px; }
.loader__ring {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.12);
  border-top-color: var(--accent);
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loader__label { font-size: 12px; letter-spacing: 0.32em; text-transform: uppercase; color: var(--ink-dim); }
.loader__bar { width: 220px; height: 3px; border-radius: 3px; background: rgba(255, 255, 255, 0.1); overflow: hidden; }
.loader__bar span { display: block; height: 100%; width: 0%; background: linear-gradient(90deg, var(--accent), var(--accent-2)); transition: width 0.2s var(--ease); }
.loader__pct { font-size: 12px; color: var(--ink-dim); font-variant-numeric: tabular-nums; }
.loader__error { max-width: 32ch; text-align: center; color: #ffb4c4; font-size: 13px; line-height: 1.5; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .grid { grid-template-columns: 1fr; }
  .nav__links > a:not(.btn) { display: none; }
  .footer { flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero__arrow, .loader__ring { animation: none; }
}