:root {
  color-scheme: light dark;
  font-family:
    Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    'Segoe UI',
    sans-serif;
  background: #f6f7f9;
  color: #16201b;
}

* {
  box-sizing: border-box;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
}

.challenge-shell {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 24px;
}

.challenge-panel {
  width: min(100%, 420px);
  border: 1px solid #d7ded9;
  border-radius: 8px;
  background: #ffffff;
  padding: 24px;
  box-shadow: 0 16px 44px rgba(22, 32, 27, 0.12);
}

.challenge-kicker {
  margin: 0 0 8px;
  color: #1f7a4e;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: 28px;
  font-weight: 800;
  line-height: 1.12;
}

.challenge-copy {
  margin: 10px 0 20px;
  color: #4b5a52;
  font-size: 16px;
  line-height: 1.45;
}

.challenge-widget {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0.01;
  overflow: hidden;
}

.challenge-status {
  min-height: 22px;
  margin: 14px 0 0;
  color: #53635b;
  font-size: 14px;
  line-height: 1.45;
}

.challenge-status-error {
  color: #a12a2a;
}

@media (prefers-color-scheme: dark) {
  :root {
    background: #111815;
    color: #eef5f0;
  }

  .challenge-panel {
    border-color: #33423a;
    background: #19231f;
    box-shadow: 0 16px 44px rgba(0, 0, 0, 0.36);
  }

  .challenge-kicker {
    color: #76d59c;
  }

  .challenge-copy,
  .challenge-status {
    color: #bfcbc5;
  }

  .challenge-status-error {
    color: #ff9d9d;
  }
}