:root {
  color-scheme: dark;
  --night: #0b1320;
  --panel: #101a2c;
  --line: #1f2d46;
  --text: #e8eef7;
  --soft: #8fa3bf;
  --blue: #3d8bff;
  --blue-lit: #6aa6ff;
  --ink: #06101f;
  --face: Bahnschrift, "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system,
    "Helvetica Neue", Arial, sans-serif;
}

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

html { background: var(--night); -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--night);
  color: var(--text);
  font: 400 1.0625rem/1.65 var(--face);
}

a { color: var(--blue-lit); }
a:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; border-radius: 2px; }

.top { border-bottom: 1px solid var(--line); }
.bar, main, .foot { width: 100%; max-width: 40rem; margin-inline: auto; padding-inline: 1rem; }
.bar { padding-block: 1rem; }

.mark {
  display: inline-block;
  color: var(--text);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  text-decoration: none;
}
.mark::after {
  content: "";
  display: inline-block;
  width: 0.5em;
  height: 0.15em;
  margin-left: 0.12em;
  background: var(--blue);
  border-radius: 0.04em;
}

main { flex: 1 0 auto; padding-block: 2rem 1rem; }

h1 {
  margin: 0 0 1.5rem;
  font-size: clamp(1.75rem, 1.35rem + 2vw, 2.75rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.025em;
  overflow-wrap: anywhere;
  text-wrap: balance;
}

.price {
  margin: 0;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.buy {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.5rem;
  padding: 1.25rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 0.75rem;
}
.buy .price { font-size: 2.25rem; line-height: 1; letter-spacing: -0.02em; }

.button {
  flex: 1 1 14rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.25rem;
  padding: 0.5rem 1.5rem;
  border-radius: 0.5rem;
  background: var(--blue);
  color: var(--ink);
  font-weight: 700;
  text-align: center;
  text-decoration: none;
  transition: background-color 0.15s;
}
.button:hover { background: var(--blue-lit); }
.button:focus-visible { outline-offset: 3px; }

.cover { display: block; max-width: 100%; height: auto; margin-top: 2rem; border-radius: 6px; }
.about { margin-top: 2rem; }
.about p { margin: 0 0 1.1rem; }

.facts {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.4rem 1.5rem;
  margin: 2rem 0 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}
.facts dt { color: var(--soft); }
.facts dd { margin: 0; overflow-wrap: anywhere; }

.products { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.products li {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.1rem 1rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--line);
}
.products h2 {
  grid-column: 1;
  margin: 0;
  font-size: 1.25rem;
  line-height: 1.3;
  overflow-wrap: anywhere;
}
.products h2 a { color: var(--text); text-decoration: none; transition: color 0.15s; }
.products h2 a::after { content: ""; position: absolute; inset: 0; }
.products li:hover h2 a { color: var(--blue-lit); }
.products h2 a:focus-visible { outline: none; }
.products h2 a:focus-visible::after {
  outline: 2px solid var(--blue);
  outline-offset: -2px;
  border-radius: 0.5rem;
}
.products .what { grid-column: 1; margin: 0; color: var(--soft); font-size: 0.95rem; }
.products .price { grid-column: 2; grid-row: 1 / span 2; align-self: center; font-size: 1.25rem; }

.empty { margin: 0; color: var(--soft); }

.foot { padding-block: 2rem; }
.foot a { color: var(--soft); }
.foot a:hover { color: var(--text); }

@media (min-width: 40rem) {
  .bar, main, .foot { padding-inline: 1.5rem; }
  main { padding-top: 3rem; }
  .button { flex: 0 0 auto; min-width: 15rem; margin-left: auto; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}