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

:root {
  --acid: #39FF14;
  --base-blue: #0052FF;
  --black: #000000;
  --white: #FFFFFF;
}

html, body {
  height: 100%;
}

body {
  background: var(--black);
  color: var(--white);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 2rem;
}

.logo {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: calc(50% + 8rem);
}

@media (min-width: 1025px) {
  .logo {
    bottom: calc(50% + 6rem);
  }
}

.logo img,
.logo video {
  width: 180px;
  height: auto;
  display: block;
  background: var(--black);
  mix-blend-mode: screen;
  animation: eyecon-fade-in 0.8s ease-out both;
}

@keyframes eyecon-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

main {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2.5rem;
  max-width: 600px;
  text-align: center;
}

.tagline {
  font-size: 1.25rem;
  color: var(--acid);
  letter-spacing: 0.05em;
}

.scale {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-family: 'Courier New', monospace;
  font-size: 0.875rem;
}

.scale .acid {
  color: var(--acid);
  text-shadow: 0 0 0.5px #fff;
}

.scale .base {
  color: var(--base-blue);
  text-shadow: 0 0 0.5px #fff;
}

.scale .neutral {
  color: rgba(255, 255, 255, 0.7);
}

nav {
  display: flex;
  gap: 2rem;
}

nav a {
  color: var(--white);
  text-decoration: none;
  font-size: 0.875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.75rem 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 2rem;
  transition: all 0.2s ease;
}

nav a:hover {
  border-color: var(--acid);
  color: var(--acid);
}

footer {
  position: absolute;
  bottom: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.tagline-footer {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.7);
  letter-spacing: 0.05em;
}

.copyright {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.7);
}

.wordmark {
  height: 13px;
  width: auto;
}

/* iPad Pro and tablets */
@media (max-width: 1024px) {
  body {
    padding: 3rem 2rem;
  }

  .logo img,
  .logo video {
    width: 280px;
  }

  .tagline {
    font-size: 2rem;
  }

  .scale {
    font-size: 1.25rem;
    gap: 1.5rem;
  }

  nav {
    gap: 3rem;
  }

  nav a {
    font-size: 1.25rem;
    padding: 1.25rem 2.5rem;
  }

  main {
    gap: 3rem;
  }

  .tagline-footer {
    font-size: 1rem;
  }

  .copyright {
    font-size: 1rem;
  }

  .wordmark {
    height: 18px;
  }
}

/* iPhone 14 Pro Max and smaller phones */
@media (max-width: 430px) {
  .logo {
    bottom: calc(50% + 7rem);
  }

  body {
    padding: 1.5rem 1rem;
  }

  main {
    gap: 1.75rem;
  }

  .logo img,
  .logo video {
    width: 120px;
  }

  .tagline {
    font-size: 1rem;
  }

  .scale {
    gap: 0.5rem;
    font-size: 0.7rem;
  }

  nav {
    flex-direction: column;
    gap: 0.75rem;
    width: 100%;
  }

  nav a {
    width: 100%;
    text-align: center;
    padding: 0.875rem 1.5rem;
  }

  footer {
    position: fixed;
    bottom: 1.5rem;
  }

  .tagline-footer {
    font-size: 0.65rem;
  }

  .copyright {
    font-size: 0.6rem;
  }

  .wordmark {
    height: 11px;
  }
}