:root {
  color-scheme: dark;
  font-family: Georgia, "Times New Roman", serif;
  --ink: #f1e6cd;
  --muted: #bdab89;
  --brass: #d4ad59;
  --brass-bright: #f0d58c;
  --wood: #1f120b;
  --leather: #31170f;
  --green: #14382d;
}

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

html {
  min-width: 320px;
  min-height: 100%;
  background: #100a07;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 50% -10%, rgba(184, 130, 58, 0.22), transparent 42rem),
    linear-gradient(135deg, rgba(8, 33, 26, 0.42), transparent 46%),
    #170d08;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.32;
  background:
    repeating-linear-gradient(87deg, transparent 0 54px, rgba(255, 255, 255, 0.012) 55px, transparent 57px),
    radial-gradient(circle at 50% 15%, transparent 24%, rgba(0, 0, 0, 0.52) 100%);
}

.shell {
  position: relative;
  width: min(100% - 2rem, 70rem);
  margin: 0 auto;
  padding: clamp(2rem, 7vw, 5.5rem) 0 4rem;
}

.topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: clamp(3rem, 8vw, 6rem);
}

.wordmark {
  color: var(--brass-bright);
  font: 700 1.2rem/1 Georgia, serif;
  letter-spacing: 0.22em;
  text-decoration: none;
}

.back {
  color: var(--muted);
  font: 700 0.7rem/1.2 system-ui, sans-serif;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  text-decoration: none;
}

.back:hover,
.back:focus-visible {
  color: var(--brass-bright);
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--brass);
  font: 700 0.72rem/1.4 system-ui, sans-serif;
  letter-spacing: 0.23em;
  text-transform: uppercase;
}

h1 {
  max-width: 12ch;
  margin: 0;
  font-size: clamp(3rem, 9vw, 6.8rem);
  font-weight: 400;
  line-height: 0.88;
  letter-spacing: -0.055em;
}

.intro {
  max-width: 36rem;
  margin: 1.6rem 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.2rem);
  line-height: 1.7;
}

.shelf {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: clamp(3rem, 7vw, 5.5rem);
}

.shelf--single {
  grid-template-columns: minmax(0, 36rem);
}

.volume {
  display: flex;
  min-height: 15rem;
  flex-direction: column;
  justify-content: space-between;
  padding: 1.4rem;
  border: 1px solid rgba(219, 181, 99, 0.34);
  border-radius: 0.35rem;
  color: inherit;
  text-decoration: none;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.045), transparent 40%),
    linear-gradient(160deg, rgba(20, 56, 45, 0.78), rgba(38, 18, 12, 0.9));
  box-shadow: inset 0 0 0 1px rgba(255, 242, 208, 0.025), 0 1rem 2.4rem rgba(0, 0, 0, 0.23);
  transition: border-color 160ms ease, transform 160ms ease, box-shadow 160ms ease;
}

.volume:hover,
.volume:focus-visible {
  border-color: rgba(240, 213, 145, 0.82);
  transform: translateY(-3px);
  box-shadow: inset 0 0 0 1px rgba(255, 242, 208, 0.08), 0 1.5rem 3.6rem rgba(0, 0, 0, 0.34);
}

.volume:focus-visible {
  outline: 3px solid var(--brass-bright);
  outline-offset: 3px;
}

.volume__number {
  color: var(--brass);
  font: 700 0.68rem/1.3 system-ui, sans-serif;
  letter-spacing: 0.17em;
  text-transform: uppercase;
}

.volume h2 {
  margin: 3.3rem 0 0.75rem;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 400;
  line-height: 1.08;
}

.volume p {
  margin: 0;
  color: var(--muted);
  font: 600 0.72rem/1.5 system-ui, sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.volume__action {
  display: inline-block;
  margin-top: 2rem;
  color: var(--brass-bright);
  font: 700 0.75rem/1.3 system-ui, sans-serif;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.section-label {
  grid-column: 1 / -1;
  margin: 1.5rem 0 0;
  color: var(--brass);
  font: 700 0.7rem/1.4 system-ui, sans-serif;
  letter-spacing: 0.21em;
  text-transform: uppercase;
}

footer {
  margin-top: 4rem;
  padding-top: 1.2rem;
  border-top: 1px solid rgba(219, 181, 99, 0.2);
  color: #8d7a5d;
  font: 600 0.68rem/1.6 system-ui, sans-serif;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

@media (max-width: 720px) {
  .shelf {
    grid-template-columns: 1fr;
  }

  .volume {
    min-height: 12.5rem;
  }
}

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