@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;600&family=Manrope:wght@600;700&display=swap');

:root{
  --black:#090d13;
  --panel:#111a24;
  --white:#e0ebf4;
  --muted:#8da1b2;
  --orange:#ff8b4d;
  --cyan:#4bd8e4;
  --line:#2a3947;
}

*{box-sizing:border-box}

body{
  margin:0;
  color:var(--white);
  background:var(--black);
  font-family:"IBM Plex Mono",monospace;
}

header{
  padding:1.4rem max(1.4rem,7vw) 4rem;
  border-bottom:1px solid var(--line);
  background:
    radial-gradient(circle at 85% 10%,rgba(75,216,228,.12),transparent 28rem),
    var(--black);
}

nav ul{
  display:flex;
  flex-wrap:wrap;
  gap:.7rem 1.2rem;
  margin:0 0 5rem;
  padding:0;
  list-style:none;
}

nav a{
  color:var(--cyan);
  text-decoration:none;
}

.eyebrow{
  color:var(--orange);
  text-transform:uppercase;
  letter-spacing:.12em;
  font-size:.74rem;
}

h1,h2{font-family:Manrope,sans-serif}

h1{
  margin:.5rem 0 0;
  font-size:clamp(4rem,10vw,8rem);
  line-height:.86;
}

main{
  display:grid;
  grid-template-columns:minmax(0,1fr) 24rem;
  gap:4rem;
  max-width:82rem;
  margin:auto;
  padding:5rem 2rem 7rem;
}

article{
  color:#b9c8d4;
  font-size:1rem;
  line-height:1.85;
}

article h2{
  color:var(--orange);
  font-size:2.2rem;
}

.event-simulator{
  align-self:start;
  position:sticky;
  top:2rem;
  padding:1.4rem;
  border:1px solid var(--line);
  background:var(--panel);
}

.event-simulator h2{
  margin-top:0;
  color:var(--cyan);
}

select,button{
  width:100%;
  margin:.5rem 0;
  padding:.75rem;
  border:1px solid var(--line);
  font:inherit;
}

select{
  color:var(--white);
  background:var(--black);
}

button{
  color:var(--black);
  background:var(--orange);
  cursor:pointer;
}

pre{
  min-height:15rem;
  padding:1rem;
  overflow:auto;
  color:var(--cyan);
  border:1px solid var(--line);
  background:var(--black);
  white-space:pre-wrap;
}

@media(max-width:820px){
  main{grid-template-columns:1fr}
  .event-simulator{position:static}
}