@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@600;700&family=DM+Sans:wght@500&display=swap');

:root {
  --color-red: #da1010;
  --color-white: #ffffff;
  --color-dark-grey: #1d1d1d;
  --color-light-grey: #999999;
  --color-black: #000000;
}

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

body {
  font-family: "DM Sans", sans-serif;
  font-weight: 500;
  background-color: var(--color-black);
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='85' height='85'%3E%3Cline x1='42.5' y1='38.5' x2='42.5' y2='46.5' stroke='rgba(255,255,255,0.08)' stroke-width='0.9'/%3E%3Cline x1='38.5' y1='42.5' x2='46.5' y2='42.5' stroke='rgba(255,255,255,0.08)' stroke-width='0.9'/%3E%3C/svg%3E"),
    linear-gradient(rgba(255,255,255,0.17) 0.68px, transparent 0.68px),
    linear-gradient(90deg, rgba(255,255,255,0.17) 0.68px, transparent 0.68px),
    linear-gradient(rgba(255,255,255,0.19) 0.34px, transparent 0.34px),
    linear-gradient(90deg, rgba(255,255,255,0.19) 0.34px, transparent 0.34px);
  background-size:
    85px 85px,
    85px 85px,
    85px 85px,
    17px 17px,
    17px 17px;
  background-position:
    -42.5px -42.5px,
    0 0,
    0 0,
    0 0,
    0 0;
  color: var(--color-white);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  -webkit-font-smoothing: antialiased;
  padding: 1rem;
}

main {
  text-align: center;
  max-width: 28rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

h1 {
  font-family: "Plus Jakarta Sans", sans-serif;
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: 700;
  color: var(--color-white);
}

p {
  color: var(--color-light-grey);
  margin-top: 0.75rem;
  font-size: clamp(0.875rem, 1.5vw, 1.05rem);
}

.back-link {
  display: inline-block;
  margin-top: 1.5rem;
  padding: 0.625rem 1.25rem;
  border: 1px solid var(--color-light-grey);
  border-radius: 0.5rem;
  background: var(--color-black);
  color: var(--color-red);
  text-decoration: none;
  font-size: 0.95rem;
  transition: border-color 0.15s ease, background-color 0.15s ease, box-shadow 0.15s ease;
}

.back-link:hover,
.back-link:focus-visible {
  border-color: var(--color-red);
  background: var(--color-dark-grey);
  box-shadow: 0 0 0 1px var(--color-red);
}

.back-link:focus-visible {
  outline: 2px solid var(--color-red);
  outline-offset: 2px;
}

footer {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--color-light-grey);
  font-size: 0.8rem;
}

footer a {
  color: var(--color-red);
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}