:root {
  --bg-twilight: #0c1220;
  --bg-navy: #151d30;
  --text-main: #eee8dc;
  --text-muted: #9ca3af;
  --accent-gold: #e8c97a;
  --accent-cream: #f5eed8;
  --glass-bg: rgba(21, 29, 48, 0.68);
  --glass-border: rgba(232, 201, 122, 0.24);
  --glass-shadow: 0 20px 50px rgba(0, 0, 0, 0.38);
  --header-height: 4.75rem;
  --radius-lg: 1.125rem;
  --radius-md: 0.875rem;
  --content-max: 72rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Inter", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  background: linear-gradient(165deg, var(--bg-twilight), var(--bg-navy));
  color: var(--text-main);
  text-rendering: optimizeLegibility;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
}

.skip-link {
  position: absolute;
  left: 0.5rem;
  top: -2.75rem;
  background: var(--accent-gold);
  color: #101522;
  font-weight: 600;
  border-radius: 0.5rem;
  padding: 0.625rem 0.875rem;
  z-index: 1000;
  transition: top 0.2s ease;
}

.skip-link:focus-visible {
  top: 0.5rem;
}

:focus-visible {
  outline: 2px solid var(--accent-cream);
  outline-offset: 2px;
}

.container {
  width: min(100% - 2.25rem, var(--content-max));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  min-height: var(--header-height);
}

.nav-wrap {
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--text-main);
}

.nav-toggle {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid rgba(232, 201, 122, 0.38);
  border-radius: 0.75rem;
  background: rgba(12, 18, 32, 0.65);
  color: var(--text-main);
  padding: 0.5rem;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.25rem;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 1.25rem;
  height: 2px;
  border-radius: 2px;
  background: var(--text-main);
}

.nav-menu {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.nav-menu a {
  color: var(--text-main);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
}

.nav-menu a:hover {
  color: var(--accent-cream);
}

main {
  position: relative;
  z-index: 1;
}

.content-section {
  padding: clamp(4rem, 7vw, 6.5rem) 0;
}

.section-inner {
  position: relative;
}

.section-eyebrow {
  margin: 0 0 0.75rem;
  color: var(--accent-gold);
  text-transform: uppercase;
  letter-spacing: 0.09em;
  font-size: 0.78rem;
  font-weight: 600;
}

.section-title {
  margin: 0;
  font-size: clamp(1.8rem, 3.2vw, 2.8rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  max-width: 24ch;
}

.section-copy {
  margin: 1.25rem 0 0;
  color: var(--text-muted);
  max-width: 65ch;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.125rem;
  margin-top: 2rem;
}

.book-card {
  position: relative;
  border: 1px solid rgba(232, 201, 122, 0.22);
  border-radius: var(--radius-lg);
  background: rgba(21, 29, 48, 0.7);
  padding: 1.5rem;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.34);
}

.book-card h3 {
  margin: 0;
  font-size: 1.2rem;
  line-height: 1.3;
}

.book-card p {
  margin: 0.75rem 0 0;
  color: var(--text-muted);
}

.book-card.featured {
  border-color: rgba(232, 201, 122, 0.45);
  background: linear-gradient(160deg, rgba(245, 238, 216, 0.08), rgba(21, 29, 48, 0.78));
}

.status-badge {
  display: inline-flex;
  align-items: center;
  margin-bottom: 0.85rem;
  border: 1px solid rgba(232, 201, 122, 0.5);
  border-radius: 999px;
  padding: 0.26rem 0.6rem;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--accent-cream);
  background: rgba(232, 201, 122, 0.14);
}

.book-card.placeholder {
  overflow: hidden;
}

.book-card.placeholder::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 18% 16%, rgba(245, 238, 216, 0.08), transparent 34%),
    radial-gradient(circle at 80% 78%, rgba(232, 201, 122, 0.12), transparent 30%);
  pointer-events: none;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.8rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.85rem;
  border-radius: 999px;
  padding: 0.65rem 1.15rem;
  text-decoration: none;
  font-weight: 650;
  letter-spacing: 0.01em;
  border: 1px solid transparent;
}

.button-primary {
  background: linear-gradient(135deg, var(--accent-gold), var(--accent-cream));
  color: #131827;
  box-shadow: 0 10px 24px rgba(232, 201, 122, 0.24);
}

.button-secondary {
  border-color: rgba(232, 201, 122, 0.55);
  background: rgba(16, 22, 38, 0.58);
}

.inline-link {
  color: var(--accent-gold);
  text-underline-offset: 0.22rem;
}

.authors-section {
  padding-bottom: 3.5rem;
}

.site-footer {
  position: relative;
  z-index: 1;
  padding: 1.25rem 0 2rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  justify-content: space-between;
  align-items: center;
  color: var(--text-muted);
  font-size: 0.93rem;
}

.footer-inner p {
  margin: 0;
}

.footer-inner a {
  color: var(--accent-gold);
  text-decoration: none;
}

@media (max-width: 62rem) {
  .card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 48rem) {
  :root {
    --header-height: 4.2rem;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-menu {
    position: absolute;
    right: 1.125rem;
    top: calc(100% - 0.35rem);
    width: min(16rem, 86vw);
    border-radius: var(--radius-md);
    border: 1px solid rgba(232, 201, 122, 0.25);
    background: rgba(12, 18, 32, 0.95);
    box-shadow: var(--glass-shadow);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 0.5rem;
    display: grid;
    gap: 0.25rem;
    transform: translateY(-0.65rem);
    opacity: 0;
    pointer-events: none;
  }

  .nav-menu li a {
    display: block;
    border-radius: 0.55rem;
    padding: 0.65rem 0.75rem;
  }

  .nav-menu li a:hover {
    background: rgba(232, 201, 122, 0.12);
  }

  .site-header.menu-open .nav-menu {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}