:root {
  color-scheme: dark;
  --bg: #050807;
  --edge: #020303;
  --cream: #f6f4ef;
  --muted: #9aa39c;
  --green: #0f6152;
  --glow: rgba(186, 204, 176, 0.38);
  --glow-green: rgba(15, 97, 82, 0.28);
  --font: "Avenir Next", "Segoe UI", "Helvetica Neue", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: var(--font);
  background: radial-gradient(1200px 800px at 50% 28%, var(--bg), var(--edge) 72%);
  color: var(--cream);
  line-height: 1.55;
}

.skip {
  position: absolute;
  left: 0.75rem;
  top: -3rem;
  padding: 0.4rem 0.7rem;
  background: var(--cream);
  color: var(--edge);
  text-decoration: none;
}

.skip:focus {
  top: 0.75rem;
}

.top {
  display: flex;
  justify-content: flex-end;
  padding: 1.25rem 1.5rem 0;
}

.locale {
  display: flex;
  gap: 0.5rem;
}

.locale button {
  appearance: none;
  margin: 0;
  padding: 0.35rem 0.55rem;
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  cursor: pointer;
}

.locale button[aria-pressed="true"] {
  color: var(--cream);
}

.locale button:focus-visible {
  outline: 1px solid var(--cream);
  outline-offset: 3px;
}

main {
  max-width: 38rem;
  margin: 0 auto;
  padding: 0 1.5rem 5rem;
}

.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 78vh;
  text-align: center;
  padding: 2rem 0 4rem;
}

.mark {
  width: 8.25rem;
  height: 8.25rem;
  border: 1.5px solid var(--cream);
  border-radius: 50%;
  box-shadow:
    0 0 10px 1px var(--glow-green),
    0 0 28px 6px var(--glow);
}

h1 {
  margin: 2.4rem 0 0;
  font-size: clamp(2.4rem, 6vw, 3.4rem);
  font-weight: 200;
  letter-spacing: 0.18em;
  line-height: 1.05;
}

.rule {
  width: min(12rem, 48%);
  height: 1px;
  margin: 1.35rem 0 0;
  border: 0;
  background: var(--green);
}

.tagline {
  display: flex;
  flex-direction: column;
  gap: 0.45em;
  margin: 1.2rem 0 0;
  color: var(--cream);
  font-size: 0.95rem;
  font-weight: 400;
  letter-spacing: 0.08em;
}

.tagline .line {
  display: block;
}

html[data-locale="uk"] .en,
html[data-locale="en"] .uk {
  display: none;
}

.home-link,
.open-app {
  display: inline-block;
  margin-top: 2rem;
  color: var(--cream);
  text-decoration: none;
  letter-spacing: 0.06em;
}

.open-app[hidden] {
  display: none;
}

.home-link:focus-visible,
.open-app:focus-visible {
  outline: 1px solid var(--cream);
  outline-offset: 4px;
}

@media (prefers-reduced-motion: reduce) {
  .mark {
    box-shadow: 0 0 0 1px var(--glow-green);
  }
}