:root {
  --grid-black: #0B0D19;
  --cloud-white: #F8FAFC;
  --electric-blue: #2563FF;
  --steel-gray: #94A3B8;
}

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

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-weight: 400;
  line-height: 1.4;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding: clamp(2rem, 6vw, 5rem);
}

body.theme-dark {
  background: var(--grid-black);
  color: var(--cloud-white);
}

body.theme-light {
  background: var(--cloud-white);
  color: var(--grid-black);
}

.wordmark {
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

main {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 80rem;
  margin: 0 auto;
  width: 100%;
}

.tagline {
  font-weight: 800;
  font-size: clamp(2.25rem, 6vw, 5rem);
  line-height: 1;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  margin-bottom: clamp(2rem, 4vw, 3rem);
}

.tagline .accent {
  color: var(--electric-blue);
  display: block;
  font-size: 1.15em;
}

.description {
  font-weight: 400;
  font-size: clamp(1.125rem, 1.75vw, 1.5rem);
  line-height: 1.5;
  max-width: 40rem;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

footer {
  margin-top: auto;
  padding-top: 3rem;
}

.contact {
  font-size: 1rem;
  letter-spacing: 0.01em;
}

.contact a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
  transition: color 0.15s ease;
}

.contact a:hover,
.contact a:focus {
  color: var(--electric-blue);
  border-bottom-color: var(--electric-blue);
}

@media (max-width: 480px) {
  body {
    padding: 1.5rem;
  }
}