:root {
  color-scheme: dark;
  --bg: #05070d;
  --panel: #101627;
  --text: #e5ecff;
  --text-muted: #94a4c8;
  --border: #283350;
  --accent: #ff5a2a;
}

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

html,
body {
  width: 100%;
  height: 100%;
}

body {
  background:
    radial-gradient(circle at 20% 20%, rgb(38 63 126 / 25%), transparent 38%),
    radial-gradient(circle at 80% 0%, rgb(57 127 102 / 20%), transparent 36%),
    var(--bg);
  color: var(--text);
  font-family: 'Space Grotesk', 'IBM Plex Sans', 'Avenir Next', sans-serif;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Hero */

.hero {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
  text-align: center;
}

.logo {
  width: 72px;
  height: 72px;
  margin-bottom: 24px;
}

h1 {
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.1;
  margin-bottom: 16px;
}

.tagline {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  line-height: 1.5;
  color: var(--text-muted);
  max-width: 480px;
  margin-bottom: 40px;
}

.play-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 48px;
  font-family: inherit;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: #fff;
  background: var(--accent);
  border: none;
  border-radius: 8px;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 200ms ease, transform 150ms ease;
}

.play-button:hover {
  background-color: #e84e22;
}

.play-button:active {
  transform: scale(0.97);
}

/* Footer */

footer {
  padding: 20px 24px;
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  background: rgb(8 11 20 / 60%);
}

footer a {
  color: var(--text-muted);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color 200ms ease;
}

footer a:hover {
  color: var(--text);
}