html { background: #08090b; }

@keyframes pressPageIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

body.press-book-detail {
  --bg: #08090b;
  --bg-alt: #111317;
  --ink: #f4f1ea;
  --ink-soft: #b8b3aa;
  --ink-faint: #76736d;
  --line: rgba(244, 241, 234, 0.14);
  --accent: #4c8dff;
  background:
    radial-gradient(rgba(244, 241, 234, 0.11) 1px, transparent 1px),
    linear-gradient(180deg, #0d1017 0%, #08090b 36rem, #07080a 100%);
  background-size: 1rem 1rem, 100% 100%;
  background-position: 0 0, 0 0;
  background-attachment: fixed, scroll;
  color: var(--ink);
  opacity: 0;
  animation: pressPageIn 3.5s ease-out forwards;
  position: relative;
}
/* extra-bright dot layer, revealed only around the cursor */
body.press-book-detail::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: radial-gradient(rgba(244, 241, 234, 0.5) 1px, transparent 1px);
  background-size: 1rem 1rem;
  background-position: 0 0;
  -webkit-mask-image: radial-gradient(14rem circle at var(--mx, -999px) var(--my, -999px), rgba(0,0,0,1), rgba(0,0,0,0) 70%);
  mask-image: radial-gradient(14rem circle at var(--mx, -999px) var(--my, -999px), rgba(0,0,0,1), rgba(0,0,0,0) 70%);
}
/* click ripple: expanding ring of bright dots */
body.press-book-detail::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: radial-gradient(rgba(76, 141, 255, 0.9) 1px, transparent 1px);
  background-size: 1rem 1rem;
  background-position: 0 0;
  -webkit-mask-image: radial-gradient(circle at var(--rx, -999px) var(--ry, -999px), transparent calc(var(--rr, 0) * 1rem - 1.6rem), rgba(0,0,0,1) calc(var(--rr, 0) * 1rem - 0.6rem), rgba(0,0,0,1) calc(var(--rr, 0) * 1rem), transparent calc(var(--rr, 0) * 1rem + 1px));
  mask-image: radial-gradient(circle at var(--rx, -999px) var(--ry, -999px), transparent calc(var(--rr, 0) * 1rem - 1.6rem), rgba(0,0,0,1) calc(var(--rr, 0) * 1rem - 0.6rem), rgba(0,0,0,1) calc(var(--rr, 0) * 1rem), transparent calc(var(--rr, 0) * 1rem + 1px));
  opacity: var(--ro, 0);
}
body.press-book-detail > * {
  position: relative;
  z-index: 1;
}

body.press-book-detail.press-exit {
  opacity: 0;
  transition: opacity 0.32s ease-in;
}

@media (prefers-reduced-motion: reduce) {
  body.press-book-detail {
    opacity: 1;
    animation: none;
  }
  body.press-book-detail.press-exit { transition: none; }
}

.press-book-detail .header {
  background: rgba(8, 9, 11, 0.84);
  border-bottom-color: var(--line);
  backdrop-filter: blur(1rem);
  -webkit-backdrop-filter: blur(1rem);
}
.press-book-detail .breadcrumb,
.press-book-detail .detail-section,
.press-book-detail .detail-cta {
  border-color: var(--line);
}
.press-book-detail .nav-links a:hover {
  background: rgba(255, 255, 255, 0.07);
}
.press-book-detail .nav-cta,
.press-book-detail .mobile-menu-cta,
.press-book-detail .btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  box-shadow: 0 0.75rem 2rem rgba(76, 141, 255, 0.18);
}
.press-book-detail .nav-cta:hover,
.press-book-detail .mobile-menu-cta:hover,
.press-book-detail .btn-primary:hover {
  background: #367cff;
  border-color: #367cff;
}
.press-book-detail .mobile-menu {
  background: rgba(0, 0, 0, 0.6);
}
.press-book-detail .mobile-menu-inner {
  background: rgba(15, 17, 21, 0.96);
}
.press-book-detail .footer {
  background: #050608;
  color: rgba(255,255,255,0.84);
}
.press-book-detail .footer-bottom,
.press-book-detail .footer-meta {
  border-color: rgba(255,255,255,0.13);
}

.book-detail-hero {
  padding: clamp(3.5rem, 8vw, 7rem) 0 clamp(5rem, 9vw, 8rem);
  border-bottom: 1px solid var(--line);
}
.book-detail-hero .container {
  display: grid;
  grid-template-columns: minmax(18rem, 0.9fr) minmax(24rem, 1fr);
  gap: clamp(4rem, 8vw, 8rem);
  align-items: center;
}
.book-stage {
  display: flex;
  justify-content: center;
  min-height: 26rem;
  align-items: center;
}

.detail-book {
  --book-w: clamp(13rem, 20vw, 17rem);
  --book-h: calc(var(--book-w) * 1.5);
  --book-perspective: 900px;
  --book-rotate-y: -2deg;
  --book-hover-rotate-y: -6deg;
  --book-thickness: 2.25rem;
  --book-half-thickness: 1.125rem;
  --book-neg-half-thickness: -1.125rem;
  --book-pages-offset: 0.2rem;
  --book-radius: 0.35rem;
  --book-bg: #f4efe7;
  --book-shadow: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--book-w);
  max-width: 100%;
  perspective: var(--book-perspective);
}
.detail-book-inner {
  position: relative;
  width: var(--book-w);
  height: var(--book-h);
  transform-style: preserve-3d;
  transform: rotateY(var(--book-rotate-y));
  transition: transform 0.36s ease;
}
.detail-book:hover .detail-book-inner {
  transform: rotateY(var(--book-hover-rotate-y));
}
.detail-book-face {
  position: absolute;
  inset: 0;
  transform: translateZ(var(--book-half-thickness));
  background: var(--book-bg) center / cover no-repeat;
  border-radius: 0 var(--book-radius) var(--book-radius) 0;
  overflow: hidden;
  box-shadow:
    0.45rem 0.7rem 2.1rem var(--book-shadow),
    inset 0.15rem 0 0.25rem rgba(255, 255, 255, 0.25);
}
.detail-book-face::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 2.15rem;
  background:
    linear-gradient(to right, rgba(0,0,0,.10), rgba(0,0,0,0) 0.24rem),
    linear-gradient(to right, rgba(255,255,255,.75), rgba(255,255,255,0) 0.48rem),
    linear-gradient(to right, rgba(0,0,0,0) 0.62rem, rgba(0,0,0,.18) 0.78rem, rgba(255,255,255,.34) 1rem, rgba(255,255,255,0) 1.7rem);
  opacity: 0.9;
  pointer-events: none;
}
.detail-book-inner::before {
  content: "";
  position: absolute;
  left: 0;
  top: var(--book-pages-offset);
  width: calc(var(--book-thickness) - 0.12rem);
  height: calc(var(--book-h) - (2 * var(--book-pages-offset)));
  transform: translateX(calc(var(--book-w) - var(--book-half-thickness) - var(--book-pages-offset))) rotateY(90deg);
  background: linear-gradient(90deg,
    #fff 0%,
    #f4f1ea 6%,
    #fff 12%,
    #eee9df 18%,
    #fff 24%,
    #f5f2eb 32%,
    #fff 40%,
    #eee9df 50%,
    #fff 60%,
    #f7f4ee 72%,
    #fff 84%,
    #ede8dd 100%);
}
.detail-book-inner::after {
  content: "";
  position: absolute;
  inset: 0;
  transform: translateZ(var(--book-neg-half-thickness));
  background: #ece7dd;
  border-radius: 0 var(--book-radius) var(--book-radius) 0;
  box-shadow: -0.8rem 0 3rem rgba(0, 0, 0, 0.38);
}
.detail-book-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  color: #817c74;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  line-height: 1.6;
  text-align: center;
  text-transform: uppercase;
}

.book-detail-copy {
  max-width: 38rem;
}
.book-kicker,
.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.2rem;
}
.book-kicker::before,
.section-kicker::before {
  content: "";
  width: 0.38rem;
  height: 0.38rem;
  border-radius: 50%;
  background: var(--accent);
}
.book-detail-copy h1 {
  font-family: 'Funnel Display', sans-serif;
  font-size: clamp(2.25rem, 4vw, 3.75rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.02;
  margin-bottom: 1rem;
  max-width: 10.5ch;
}
.book-detail-copy .subtitle {
  color: var(--ink-soft);
  font-size: clamp(1.15rem, 1.5vw, 1.35rem);
  line-height: 1.45;
  margin-bottom: 1.4rem;
}
.book-detail-copy .author {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 2rem;
}
.book-intro {
  color: var(--ink-soft);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 1.5rem;
  max-width: 36rem;
}
.book-intro p {
  margin-bottom: 1rem;
}
.book-intro p:last-child {
  margin-bottom: 0;
}
.format-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-bottom: 1.5rem;
}
.format-card {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding: 1.1rem 1.1rem 1.2rem;
  background: var(--bg);
  color: var(--ink);
}
.format-name {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.format-cta {
  font-weight: 500;
}
.format-card:hover .format-cta {
  color: var(--accent);
}
@media (max-width: 30rem) {
  .format-grid { grid-template-columns: 1fr; }
}

.purchase-list {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-bottom: 1.5rem;
}
.purchase-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  align-items: center;
  min-height: 3.4rem;
  border-top: 1px solid var(--line);
  color: var(--ink);
  font-weight: 500;
}
.purchase-row:first-child { border-top: 0; }
.purchase-row span {
  color: var(--ink-faint);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.purchase-row:hover {
  color: var(--accent);
}
.book-note {
  color: var(--ink-faint);
  font-size: 0.9rem;
}

.detail-section {
  padding: clamp(4rem, 8vw, 7rem) 0;
  border-bottom: 1px solid var(--line);
}
.detail-section .container {
  display: grid;
  grid-template-columns: 13rem minmax(0, 45rem);
  gap: clamp(2rem, 6vw, 6rem);
}
.detail-section h2 {
  font-family: 'Funnel Display', sans-serif;
  font-size: clamp(2rem, 3vw, 3rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin-bottom: 1.5rem;
}
.detail-section p {
  color: var(--ink-soft);
  font-size: 1.03rem;
  line-height: 1.75;
  margin-bottom: 1.2rem;
}
.detail-section p:last-child { margin-bottom: 0; }
.section-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--ink-faint);
  text-transform: uppercase;
  padding-top: 0.65rem;
  border-top: 1px solid var(--line);
}
.argument-list {
  display: grid;
  border-top: 1px solid var(--line);
}
.argument-item {
  display: grid;
  grid-template-columns: 4rem 1fr;
  gap: 1.5rem;
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--line);
}
.argument-item .num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
}
.argument-item h3 {
  font-family: 'Funnel Display', sans-serif;
  font-size: 1.25rem;
  font-weight: 500;
  margin-bottom: 0.3rem;
}
.argument-item p {
  font-size: 0.95rem;
  line-height: 1.6;
  margin: 0;
}
.meta-grid {
  display: grid;
  border-top: 1px solid var(--line);
}
.meta-row {
  display: grid;
  grid-template-columns: 9rem 1fr;
  gap: 1.5rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
}
.meta-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  text-transform: uppercase;
}
.meta-value {
  color: var(--ink);
}
.detail-cta {
  padding: 5rem 0;
  border-bottom: 1px solid var(--line);
}
.detail-cta .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}
.detail-cta h2 {
  font-family: 'Funnel Display', sans-serif;
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.05;
}

@media (max-width: 58rem) {
  .book-detail-hero .container {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .book-stage {
    min-height: auto;
    padding: 1rem 0 0;
  }
  .detail-book {
    --book-w: min(64vw, 16rem);
    --book-thickness: 2rem;
    --book-half-thickness: 1rem;
    --book-neg-half-thickness: -1rem;
  }
  .book-detail-copy h1 {
    max-width: 11ch;
  }
  .detail-section .container {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .section-label {
    width: 10rem;
  }
  .detail-cta .container {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 34rem) {
  .argument-item,
  .meta-row {
    grid-template-columns: 1fr;
    gap: 0.4rem;
  }
}