/* --- Design tokens (aged paper & ink) --- */
:root {
  --paper-highlight: #faf6ee;
  --paper-mid: #efe6d6;
  --paper-shadow: #e0d2bc;
  --paper-edge: #d2c2a6;
  --ink: #3a2e24;
  --ink-muted: #6b5b48;
  --accent: #7a5230;
  --accent-soft: #a67c52;
  --shelf-wood: #5c4334;
  --shelf-wood-light: #7a5c47;
  --shelf-edge: #3e2d23;
  --text: var(--ink);
  --text-muted: var(--ink-muted);
  --game-accent: var(--accent);
  --cover-width: clamp(7.5rem, 22vw, 11.5rem);
  --perspective: 1000px;
  --shadow-soft: 0 0.35rem 0.85rem rgba(58, 46, 36, 0.22);
  --shadow-lift: 0 0.85rem 1.25rem rgba(58, 46, 36, 0.3);
  --radius-card: 0.35rem;
  --font-body: 'Crimson Text', Georgia, 'Times New Roman', serif;
  --font-title: 'Old Standard TT', 'Times New Roman', serif;
}

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

html {
  font-size: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--text);
  background:
    radial-gradient(ellipse 120% 80% at 50% 0%, var(--paper-highlight) 0%, transparent 55%),
    linear-gradient(
      180deg,
      var(--paper-mid) 0%,
      var(--paper-shadow) 48%,
      color-mix(in srgb, var(--paper-edge) 85%, #c4b08a) 100%
    );
  line-height: 1.55;
}

/* --- Page chrome --- */
.site-header {
  padding: 2rem 1.5rem 1rem;
  text-align: center;
}

.site-title {
  margin: 0;
  font-family: var(--font-title);
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.site-subtitle {
  margin: 0.5rem 0 0;
  font-family: var(--font-title);
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  font-weight: 400;
  font-style: italic;
  color: var(--text-muted);
}

.store-sign {
  display: inline-block;
  margin-top: 0.75rem;
  padding: 0.35rem 1.25rem;
  font-family: var(--font-title);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink);
  text-shadow: 0 1px 0 rgba(255, 250, 242, 0.65);
  border: 1px solid color-mix(in srgb, var(--ink) 22%, transparent);
  border-radius: 0.2rem;
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--paper-highlight) 92%, var(--accent-soft)) 0%,
    color-mix(in srgb, var(--paper-mid) 88%, #d8c8ae) 100%
  );
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.55),
    0 0.12rem 0.35rem rgba(58, 46, 36, 0.12);
  animation: sign-flicker 4.5s ease-in-out infinite;
}

.site-tagline {
  margin: 1rem 0 0;
  font-size: 0.95rem;
  color: var(--text-muted);
  max-width: 32rem;
  margin-left: auto;
  margin-right: auto;
}

.site-main {
  padding: 1rem 1rem 3rem;
  max-width: 72rem;
  margin: 0 auto;
}

#store {
  perspective: var(--perspective);
}

.book-list {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-footer {
  padding: 1.5rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.site-footer p {
  margin: 0;
}

/* --- Book row (card + shelf rail) --- */
.book-card {
  --game-accent: var(--accent);
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: row;
  align-items: stretch;
  gap: 1.35rem;
  padding: 1.15rem 1.15rem 1.5rem;
  border-radius: var(--radius-card);
  background: linear-gradient(
    165deg,
    color-mix(in srgb, var(--paper-highlight) 92%, var(--paper-shadow)) 0%,
    color-mix(in srgb, var(--paper-mid) 88%, #d8c8ae) 100%
  );
  border: 1px solid color-mix(in srgb, var(--ink) 14%, transparent);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.55),
    0 0.2rem 0.5rem rgba(58, 46, 36, 0.08);
}

.book-card::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 0.75rem;
  border-radius: 0 0 var(--radius-card) var(--radius-card);
  background: linear-gradient(
    180deg,
    var(--shelf-wood-light) 0%,
    var(--shelf-wood) 45%,
    var(--shelf-edge) 100%
  );
  box-shadow:
    inset 0 1px 0 rgba(255, 248, 235, 0.18),
    0 0.35rem 0.5rem rgba(58, 46, 36, 0.22);
  z-index: 0;
  pointer-events: none;
}

.book-card__info {
  position: relative;
  z-index: 1;
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.book-card__title {
  margin: 0;
  font-family: var(--font-title);
  font-size: clamp(1.15rem, 2.5vw, 1.45rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink);
  line-height: 1.25;
}

.book-card__story {
  margin: 0;
  font-size: 0.95rem;
  color: var(--ink);
  max-width: 42rem;
}

.book-card__meta {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.88rem;
}

.book-card__meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.65rem;
  align-items: baseline;
}

.book-card__meta-label {
  font-weight: 700;
  color: var(--ink-muted);
  min-width: 5.5rem;
}

.book-card__meta-value {
  color: var(--ink);
}

.book-card__sources-heading {
  margin: 0.35rem 0 0.25rem;
  font-family: var(--font-title);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.book-card__sources-list {
  margin: 0;
  padding-left: 1.2rem;
  font-size: 0.9rem;
}

.book-card__sources-list a {
  color: var(--accent);
}

.book-card__sources-list a:hover {
  color: color-mix(in srgb, var(--accent) 75%, var(--ink));
}

.book-card__cta {
  align-self: flex-start;
  margin-top: 0.25rem;
  padding: 0.4rem 0.9rem;
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  color: #fdf9f2;
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--game-accent) 55%, #4a3224) 0%,
    color-mix(in srgb, var(--game-accent) 35%, #2c1f18) 100%
  );
  border: 1px solid color-mix(in srgb, var(--ink) 25%, transparent);
  border-radius: 0.25rem;
  box-shadow: 0 0.1rem 0.25rem rgba(58, 46, 36, 0.2);
}

.book-card__cta:hover {
  filter: brightness(1.06);
}

.book-card__cta:focus {
  outline: none;
}

.book-card__cta:focus-visible {
  outline: 3px solid var(--game-accent);
  outline-offset: 2px;
}

/* Cover on the left: tilt + lift on hover (spine toward text) */
.book-card__cover-link {
  position: relative;
  z-index: 1;
  flex-shrink: 0;
  width: var(--cover-width);
  align-self: center;
  text-decoration: none;
  color: inherit;
  perspective: var(--perspective);
  transform-style: preserve-3d;
}

.book-card__cover-link:focus {
  outline: none;
}

.book-card__cover-link:focus-visible .book-card__cover {
  outline: 3px solid var(--game-accent);
  outline-offset: 4px;
}

.book-card__cover {
  position: relative;
  width: 100%;
  aspect-ratio: 2 / 3;
  border-radius: 0.25rem 0.15rem 0.15rem 0.25rem;
  overflow: hidden;
  transform: rotateY(10deg) rotateX(2deg);
  transform-origin: right center;
  transition:
    transform 0.35s cubic-bezier(0.34, 1.2, 0.64, 1),
    box-shadow 0.35s ease;
  box-shadow:
    var(--shadow-soft),
    inset 0 0 0 1px rgba(255, 252, 246, 0.35);
  background: linear-gradient(
    145deg,
    color-mix(in srgb, var(--game-accent) 22%, var(--paper-highlight)) 0%,
    color-mix(in srgb, var(--game-accent) 14%, var(--paper-mid)) 45%,
    color-mix(in srgb, var(--game-accent) 28%, var(--paper-shadow)) 100%
  );
  border: 1px solid color-mix(in srgb, var(--ink) 18%, transparent);
}

.book-card__cover::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    255deg,
    rgba(255, 255, 255, 0.22) 0%,
    transparent 35%,
    transparent 65%,
    rgba(42, 32, 24, 0.08) 100%
  );
  pointer-events: none;
  z-index: 1;
}

.book-card__cover-link:hover .book-card__cover,
.book-card__cover-link:focus-visible .book-card__cover {
  transform: rotateY(4deg) rotateX(0deg) translateY(-0.35rem) scale(1.04);
  box-shadow: var(--shadow-lift);
}

.book-card__cover-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.book-card__cover-title {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  padding: 0.5rem 0.45rem;
  font-family: var(--font-title);
  font-size: 0.68rem;
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #fdf9f2;
  background: linear-gradient(
    180deg,
    transparent 0%,
    color-mix(in srgb, var(--ink) 78%, var(--game-accent)) 40%
  );
  text-shadow: 0 1px 2px rgba(42, 32, 24, 0.65);
}

.book-card__cover-img ~ .book-card__cover-title {
  background: linear-gradient(
    180deg,
    transparent 0%,
    color-mix(in srgb, var(--ink) 85%, black) 35%
  );
}

@media (max-width: 40rem) {
  .book-card {
    flex-direction: column;
    align-items: stretch;
    padding-bottom: 1.35rem;
  }

  .book-card__cover-link {
    width: min(var(--cover-width), 75%);
    margin-left: auto;
    margin-right: auto;
  }

  .book-card__cover {
    transform: rotateY(0deg) rotateX(0deg);
    transform-origin: center center;
  }

  .book-card__cover-link:hover .book-card__cover,
  .book-card__cover-link:focus-visible .book-card__cover {
    transform: translateY(-0.25rem) scale(1.03);
  }
}

/* --- Animations --- */

@keyframes sign-flicker {
  0%,
  100% {
    opacity: 1;
    filter: brightness(1);
  }
  48% {
    opacity: 1;
  }
  49% {
    opacity: 0.88;
  }
  50% {
    opacity: 1;
  }
  78% {
    opacity: 1;
    filter: brightness(1.05);
  }
  79% {
    opacity: 0.92;
    filter: brightness(0.92);
  }
  80% {
    opacity: 1;
    filter: brightness(1);
  }
}

/* --- No-JS fallback --- */
.noscript-fallback {
  margin: 1rem auto 0;
  max-width: 32rem;
  padding: 1rem;
  background: color-mix(in srgb, var(--paper-highlight) 75%, var(--paper-shadow));
  border: 1px solid color-mix(in srgb, var(--ink) 12%, transparent);
  border-radius: 0.35rem;
  font-size: 0.9rem;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

.noscript-fallback ul {
  margin: 0.5rem 0 0;
  padding-left: 1.25rem;
}

.noscript-fallback a {
  color: var(--accent);
}

/* --- Reduced motion --- */
@media (prefers-reduced-motion: reduce) {
  .store-sign {
    animation: none;
  }

  .book-card__cover {
    transform: none;
  }

  .book-card__cover-link:hover .book-card__cover,
  .book-card__cover-link:focus-visible .book-card__cover {
    transform: none;
  }

  .book-card__cover,
  .book-card__cover-link {
    transition-duration: 0.01ms;
  }
}