:root {
  --bg-1: #04111f;
  --bg-2: #071f38;
  --glow-cyan: #6df7ff;
  --glow-gold: #ffd166;
  --glow-coral: #ff6b6b;
  --text-main: #f4fbff;
  --text-dim: rgba(228, 243, 255, 0.7);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  width: 100%;
  min-height: 100%;
  overflow: hidden;
  background:
    radial-gradient(circle at 20% 20%, rgba(109, 247, 255, 0.18), transparent 26%),
    radial-gradient(circle at 80% 18%, rgba(255, 209, 102, 0.14), transparent 22%),
    radial-gradient(circle at 50% 80%, rgba(255, 107, 107, 0.12), transparent 25%),
    linear-gradient(160deg, var(--bg-1), var(--bg-2) 58%, #02060d);
  color: var(--text-main);
  font-family: "Avenir Next", "Segoe UI", "Trebuchet MS", sans-serif;
}

body {
  position: relative;
  min-height: 100vh;
}

#scene,
.aurora,
.noise,
.hero,
.footer {
  position: fixed;
}

#scene {
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.aurora {
  inset: -10%;
  background:
    radial-gradient(circle at 30% 40%, rgba(109, 247, 255, 0.22), transparent 24%),
    radial-gradient(circle at 70% 30%, rgba(255, 209, 102, 0.16), transparent 18%),
    radial-gradient(circle at 50% 75%, rgba(130, 90, 255, 0.18), transparent 22%);
  filter: blur(48px);
  opacity: 0.95;
  animation: auroraShift 16s ease-in-out infinite alternate;
  pointer-events: none;
}

.noise {
  inset: 0;
  opacity: 0.08;
  mix-blend-mode: soft-light;
  background-image:
    linear-gradient(0deg, transparent 24%, rgba(255, 255, 255, 0.4) 25%, transparent 26%),
    linear-gradient(90deg, transparent 24%, rgba(255, 255, 255, 0.24) 25%, transparent 26%);
  background-size: 6px 6px;
  animation: drift 12s linear infinite;
  pointer-events: none;
}

.hero {
  inset: 0;
  display: block;
  padding: 0;
  z-index: 1;
  pointer-events: none;
}

.hero-drift {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  animation: screenSaverDrift 22s linear infinite alternate;
}

.hero-panel {
  max-width: min(38rem, 100%);
  width: min(38rem, calc(100vw - 5rem));
  padding: clamp(1rem, 2vw, 1.6rem) clamp(1rem, 2vw, 1.8rem);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 1.25rem;
  background:
    linear-gradient(135deg, rgba(5, 15, 28, 0.4), rgba(8, 21, 38, 0.16)),
    radial-gradient(circle at top, rgba(109, 247, 255, 0.06), transparent 55%);
  box-shadow:
    0 24px 90px rgba(0, 0, 0, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    inset 0 0 80px rgba(109, 247, 255, 0.05);
  backdrop-filter: blur(14px);
  opacity: 0;
  transform: translateY(1.4rem) scale(0.96);
  filter: blur(10px);
  text-align: center;
  transition:
    opacity 1.1s ease,
    transform 1.4s cubic-bezier(0.16, 0.84, 0.2, 1),
    filter 1.1s ease,
    box-shadow 1.1s ease;
}

body.reveal .hero-panel {
  opacity: 1;
  transform: translateY(0) scale(1);
  filter: blur(0);
  box-shadow:
    0 24px 90px rgba(0, 0, 0, 0.35),
    0 0 80px rgba(109, 247, 255, 0.12),
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    inset 0 0 120px rgba(109, 247, 255, 0.05);
}

.eyebrow {
  margin: 0 0 1rem;
  letter-spacing: 0.45em;
  text-transform: uppercase;
  font-size: clamp(0.58rem, 0.7vw, 0.78rem);
  color: var(--glow-gold);
  text-shadow: 0 0 22px rgba(255, 209, 102, 0.24);
  opacity: 0;
  transform: translateY(1rem);
  transition: opacity 0.9s ease 0.2s, transform 0.9s ease 0.2s;
}

h1 {
  margin: 0;
  font-size: clamp(1.9rem, 5vw, 4.2rem);
  line-height: 0.94;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: linear-gradient(180deg, #ffffff 0%, #c6f9ff 45%, #ffe39b 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow:
    0 0 18px rgba(109, 247, 255, 0.45),
    0 0 36px rgba(109, 247, 255, 0.25),
    0 0 60px rgba(255, 209, 102, 0.12);
  opacity: 0;
  transform: scale(1.08);
  filter: blur(10px);
  transition: opacity 1s ease 0.35s, transform 1s ease 0.35s, filter 1s ease 0.35s;
}

.tagline {
  max-width: 24rem;
  margin: 1rem auto 0;
  font-size: clamp(0.72rem, 1.2vw, 0.95rem);
  line-height: 1.55;
  color: var(--text-dim);
  opacity: 0;
  transform: translateY(1rem);
  transition: opacity 0.9s ease 0.5s, transform 0.9s ease 0.5s;
}

.pulse-line {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-top: 1.2rem;
  opacity: 0;
  transform: scaleX(0.7);
  transition: opacity 0.9s ease 0.68s, transform 0.9s ease 0.68s;
}

body.reveal .eyebrow,
body.reveal h1,
body.reveal .tagline,
body.reveal .pulse-line {
  opacity: 1;
  transform: translateY(0) scale(1);
  filter: blur(0);
}

.pulse-line span {
  width: 2.6rem;
  height: 0.24rem;
  border-radius: 999px;
  background: linear-gradient(90deg, transparent, var(--glow-cyan), transparent);
  box-shadow: 0 0 20px rgba(109, 247, 255, 0.45);
  animation: pulse 2.4s ease-in-out infinite;
}

.pulse-line span:nth-child(2) {
  animation-delay: 0.35s;
}

.pulse-line span:nth-child(3) {
  animation-delay: 0.7s;
}

.footer {
  left: 0;
  right: 0;
  bottom: 1.2rem;
  text-align: center;
  z-index: 1;
  color: rgba(244, 251, 255, 0.56);
  font-size: 0.9rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  opacity: 0;
  transition: opacity 1s ease 0.85s;
}

body.reveal .footer {
  opacity: 1;
}

@keyframes pulse {
  0%,
  100% {
    transform: scaleX(0.65);
    opacity: 0.4;
  }
  50% {
    transform: scaleX(1.15);
    opacity: 1;
  }
}

@keyframes drift {
  from {
    transform: translate3d(0, 0, 0);
  }
  to {
    transform: translate3d(-24px, -18px, 0);
  }
}

@keyframes auroraShift {
  0% {
    transform: translate3d(-2%, -1%, 0) scale(1);
  }
  50% {
    transform: translate3d(2%, 1%, 0) scale(1.08);
  }
  100% {
    transform: translate3d(0, 2%, 0) scale(0.98);
  }
}

@keyframes screenSaverDrift {
  0% {
    transform: translate(-22vw, -16vh);
  }
  25% {
    transform: translate(24vw, -12vh);
  }
  50% {
    transform: translate(18vw, 18vh);
  }
  75% {
    transform: translate(-20vw, 14vh);
  }
  100% {
    transform: translate(-24vw, -10vh);
  }
}

@media (max-width: 640px) {
  .hero {
    padding: 0;
  }

  .hero-panel {
    width: min(22rem, calc(100vw - 2rem));
    border-radius: 1rem;
  }

  .eyebrow {
    letter-spacing: 0.28em;
  }

  .pulse-line span {
    width: 2rem;
  }
}