:root {
  color-scheme: light;
  font-family: Arial, Helvetica, sans-serif;
  color: #22221f;
  background: #f4f1e9;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  min-height: 100svh;
  padding: 28px 40px;
  display: flex;
  flex-direction: column;
}
header,
footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
a {
  color: inherit;
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}
header > a {
  font-size: 32px;
  font-weight: 900;
  letter-spacing: -2px;
}
header > a span {
  color: #bb341f;
}
#count {
  font:
    12px ui-monospace,
    monospace;
  font-variant-numeric: tabular-nums;
  text-align: right;
  overflow-wrap: anywhere;
}
main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: clamp(28px, 6vh, 72px);
}
h1 {
  font-size: clamp(44px, 7vw, 88px);
  line-height: 0.96;
  letter-spacing: -0.065em;
  text-align: center;
  margin: 0;
  font-weight: 900;
}
#message {
  font:
    14px/1.5 ui-monospace,
    monospace;
  text-align: center;
  min-height: 42px;
  max-width: 34rem;
  margin: 24px 0 0;
}
#arena {
  position: relative;
  width: min(100%, 620px);
  height: clamp(220px, 34vh, 340px);
  margin: 8px 0 24px;
}
#button {
  position: absolute;
  left: calc(50% - 84px);
  top: calc(50% - 84px);
  width: 168px;
  height: 168px;
  border-radius: 50%;
  border: 2px solid #8a2518;
  background: #bb341f;
  color: #fff9e9;
  font:
    900 20px Arial,
    sans-serif;
  letter-spacing: 0.07em;
  box-shadow:
    0 9px 0 #76291e,
    0 14px 0 10px #e0dcd2;
  cursor: pointer;
  touch-action: manipulation;
  transition:
    left 130ms ease-out,
    top 130ms ease-out,
    width 130ms,
    height 130ms;
}
#button:active {
  box-shadow:
    0 3px 0 #76291e,
    0 8px 0 10px #e0dcd2;
}
:focus-visible {
  outline: 3px solid #22221f;
  outline-offset: 8px;
}
footer {
  font:
    12px ui-monospace,
    monospace;
  padding-top: 12px;
  border-top: 1px solid #d0ccc3;
}
footer img {
  display: block;
  width: 138px;
  height: 24px;
}
noscript {
  text-align: center;
  padding: 16px;
}
@media (max-width: 600px) {
  body {
    padding: 20px;
  }
  main {
    padding-top: 38px;
  }
  #arena {
    height: clamp(220px, 33svh, 300px);
  }
  h1 {
    font-size: clamp(44px, 12vw, 68px);
  }
}
@media (prefers-reduced-motion: reduce) {
  #button {
    transition: none;
  }
}