@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=JetBrains+Mono:wght@300;400;500&display=swap');

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

html {
  scroll-behavior: smooth;
  background: #0a0f1a;
}

body {
  overflow-x: hidden;
  background: #0a0f1a;
  color: #ffffff;
  font-family: 'Inter', sans-serif;
}

.geist-mono,
.brand-font {
  font-family: 'JetBrains Mono', monospace;
}

.universal-sans {
  font-family: 'Inter', sans-serif;
}

.text-accent {
  color: #5ac8ff;
}

/* Navigation */
.page-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: rgba(10, 15, 26, 0.58);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(18px);
}

/* Hero animation wrapper */
.hero-animation {
  position: relative;
  height: 420vh;
  background: #0a0f1a;
}

.hero-sticky {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: hidden;
  background: radial-gradient(circle at center, #1f293e 0%, #101623 54%, #0a0f1a 100%);
}

#scene {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.vignette {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(circle at center, transparent 34%, rgba(10,15,26,0.35) 100%),
    linear-gradient(to bottom, rgba(10,15,26,0.35), transparent 22%, transparent 68%, rgba(10,15,26,0.45));
}

.hero-brand {
  position: absolute;
  top: 15vh;
  width: 100%;
  z-index: 2;
  text-align: center;
  letter-spacing: 0.55em;
  text-transform: uppercase;
  pointer-events: none;
  padding: 0 1.5rem;
}

.hero-brand h1 {
  font-size: clamp(1.8rem, 4vw, 4.2rem);
  font-weight: 500;
  text-shadow: 0 0 30px rgba(80, 170, 255, 0.32);
  font-family: 'JetBrains Mono', monospace;
}

.hero-brand p {
  margin-top: 1rem;
  color: rgba(255,255,255,0.7);
  font-size: clamp(0.62rem, 1vw, 0.95rem);
  letter-spacing: 0.32em;
  line-height: 1.7;
}

.hero-brand span {
  color: #5ac8ff;
}

.hero-cta {
  position: absolute;
  top: 30vh;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  width: min(820px, 90vw);
  text-align: center;
  pointer-events: auto;
}

.hero-cta h2 {
  font-size: clamp(2.5rem, 6vw, 6rem);
  line-height: 0.95;
  font-weight: 500;
  letter-spacing: -0.05em;
  margin-bottom: 1.4rem;
}

.hero-cta p {
  color: rgba(255,255,255,0.72);
  font-size: clamp(1rem, 1.6vw, 1.25rem);
  line-height: 1.65;
  max-width: 760px;
  margin: 0 auto 2rem;
}

.steps {
  position: absolute;
  left: 50%;
  bottom: 11vh;
  transform: translateX(-50%);
  z-index: 3;
  width: min(1180px, 88vw);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  pointer-events: none;
}

.step {
  opacity: 0.25;
  transform: translateY(14px);
  transition: opacity 450ms ease, transform 450ms ease;
}

.step.active {
  opacity: 1;
  transform: translateY(0);
}

.step h3 {
  color: #5ac8ff;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.65rem;
  font-family: 'JetBrains Mono', monospace;
}

.step p {
  color: rgba(255,255,255,0.68);
  font-size: 0.84rem;
  line-height: 1.4;
  max-width: 230px;
}

.bottom-line {
  position: absolute;
  left: 0;
  bottom: 4vh;
  z-index: 3;
  width: 100%;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.38em;
  color: rgba(255,255,255,0.72);
  pointer-events: none;
  font-size: clamp(0.7rem, 1.1vw, 1rem);
}

.bottom-line span {
  color: #5ac8ff;
}

/* Content */
main {
  position: relative;
  z-index: 10;
  background:
    radial-gradient(circle at 20% 0%, rgba(90, 200, 255, 0.08), transparent 32%),
    linear-gradient(to bottom, #02040a, #080b11 18%, #05070c 100%);
}

.section-card {
  opacity: 0;
  transform: translateY(34px);
  transition: opacity 800ms ease, transform 800ms ease;
}

.section-card.visible,
.fly-left.visible,
.fly-right.visible,
.fly-up.visible {
  opacity: 1;
  transform: translate(0, 0);
}

.fly-left {
  opacity: 0;
  transform: translateX(-42px);
  transition: opacity 850ms ease, transform 850ms ease;
}

.fly-right {
  opacity: 0;
  transform: translateX(42px);
  transition: opacity 850ms ease, transform 850ms ease;
}

.fly-up {
  opacity: 0;
  transform: translateY(42px);
  transition: opacity 850ms ease, transform 850ms ease;
}

.glass-card {
  border: 1px solid rgba(255,255,255,0.10);
  background: linear-gradient(145deg, rgba(255,255,255,0.045), rgba(255,255,255,0.015));
  box-shadow: 0 28px 80px rgba(0,0,0,0.26);
  backdrop-filter: blur(14px);
  border-radius: 8px;
}

.glass-card:hover {
  border-color: rgba(90, 200, 255, 0.36);
  box-shadow: 0 30px 100px rgba(30, 140, 255, 0.14);
  transform: translateY(-3px);
  transition: all 250ms ease;
}

@media (max-width: 900px) {
  .hero-brand {
    top: 12vh;
    letter-spacing: 0.25em;
  }

  .hero-cta {
    top: 28vh;
  }

  .steps {
    bottom: 8vh;
    grid-template-columns: 1fr;
    gap: 0.6rem;
  }

  .step:not(.active) {
    display: none;
  }

  .bottom-line {
    display: none;
  }
}