/* =========================================
   PAW·SPECTIVES — main.css
   ========================================= */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,700;0,900;1,400;1,700&family=Inter:wght@300;400;500;600&display=swap');

/* ── TOKENS ── */
:root {
  --black:      #1A1A1A;
  --white:      #F8F8F6;
  --gold:       #C8861E;
  --gold-light: #E09B25;
  --teal:       #4FA89B;
  --pink:       #C97B8B;
  --purple:     #7B7FC4;
  --yellow:     #C8C04A;
  --mid:        #6B6B6B;
  --muted:      rgba(26,26,26,0.08);
  --border:     rgba(26,26,26,0.10);

  --serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --sans:  'Inter', system-ui, -apple-system, sans-serif;

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in:  cubic-bezier(0.64, 0, 0.78, 0);
}

/* ── RESET ── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: var(--white);
  color: var(--black);
  font-family: var(--sans);
  font-weight: 400;
  overflow-x: hidden;
  line-height: 1.6;
}

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

a {
  color: inherit;
  text-decoration: none;
}

/* ── UTILITIES ── */
.section-label {
  font-family: var(--sans);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--mid);
  display: block;
}

.rule {
  width: 40px;
  height: 2px;
  background: var(--gold);
  margin: 1.2rem auto 2rem;
}

.rule--left {
  margin-left: 0;
}

/* ── NAV ── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  padding: 0 2.5rem;
  height: 64px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(248, 248, 246, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s;
}

.nav.scrolled {
  background: rgba(248, 248, 246, 0.97);
}

.nav__brand {
  font-family: var(--serif);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--black);
}

.nav__brand span {
  color: var(--gold);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  list-style: none;
}

.nav__links a {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mid);
  transition: color 0.2s;
}

.nav__links a:hover {
  color: var(--black);
}

.nav__cta {
  background: var(--black);
  color: var(--white) !important;
  padding: 0.6rem 1.4rem;
  font-size: 0.72rem !important;
  font-weight: 600 !important;
  letter-spacing: 0.14em !important;
  transition: background 0.2s, transform 0.15s !important;
}

.nav__cta:hover {
  background: var(--gold);
  color: var(--white) !important;
  transform: translateY(-1px);
}

/* ── HERO ── */
.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 8rem 2rem 5rem;
  text-align: center;
  position: relative;
}

.hero__eyebrow {
  margin-bottom: 2.5rem;
  opacity: 0;
  transform: translateY(12px);
  animation: fadeUp 0.7s var(--ease-out) 0.2s forwards;
}

.hero__quote {
  font-family: var(--serif);
  font-size: clamp(2.6rem, 6.5vw, 5.6rem);
  font-weight: 400;
  line-height: 1.1;
  max-width: 860px;
  letter-spacing: -0.025em;
  opacity: 0;
  transform: translateY(16px);
  animation: fadeUp 0.8s var(--ease-out) 0.4s forwards;
}

.hero__quote em {
  font-style: italic;
  color: var(--gold);
}

.hero__attribution {
  font-family: var(--serif);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--teal);
  margin-top: 2rem;
  opacity: 0;
  animation: fadeUp 0.6s var(--ease-out) 0.7s forwards;
}

.hero__scroll {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--mid);
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  opacity: 0;
  animation: fadeIn 1s ease 1.2s forwards;
}

.hero__scroll svg {
  width: 18px;
  height: 18px;
  stroke: var(--mid);
  animation: scrollBounce 2s ease-in-out infinite;
}

/* ── BOOK INTRO ── */
.book-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  max-width: 1200px;
  margin: 0 auto;
  padding: 7rem 2rem;
  align-items: center;
  gap: 4rem;
}

.book-intro__cover {
  position: relative;
}

.book-intro__cover::after {
  content: '';
  position: absolute;
  inset: 2.5rem -1.5rem -1.5rem 2.5rem;
  background: var(--teal);
  opacity: 0.07;
  z-index: -1;
}

.book-intro__cover img {
  width: 100%;
  max-width: 480px;
  box-shadow:
    0 4px 12px rgba(26,26,26,0.08),
    0 16px 40px rgba(26,26,26,0.14),
    0 32px 60px rgba(26,26,26,0.08);
  transition: transform 0.5s var(--ease-out), box-shadow 0.5s var(--ease-out);
}

.book-intro__cover img:hover {
  transform: translateY(-6px) rotate(-0.5deg);
  box-shadow:
    0 8px 20px rgba(26,26,26,0.08),
    0 24px 56px rgba(26,26,26,0.16),
    0 48px 80px rgba(26,26,26,0.10);
}

.book-intro__text h2 {
  font-family: var(--serif);
  font-size: clamp(1.9rem, 3vw, 2.9rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 1rem 0 1.5rem;
}

.book-intro__text h2 em {
  font-style: italic;
  color: var(--gold);
}

.book-intro__text p {
  font-size: 1rem;
  line-height: 1.8;
  color: #404040;
  margin-bottom: 1.1rem;
  max-width: 440px;
}

.book-meta {
  display: flex;
  gap: 0;
  margin: 2.2rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.book-meta__item {
  flex: 1;
  padding: 1.3rem 0;
  text-align: center;
  border-right: 1px solid var(--border);
}

.book-meta__item:last-child {
  border-right: none;
}

.book-meta__num {
  display: block;
  font-family: var(--serif);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--gold);
  line-height: 1;
}

.book-meta__lbl {
  display: block;
  font-size: 0.6rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mid);
  margin-top: 0.35rem;
}

.btn-group {
  display: flex;
  align-items: center;
  gap: 1.8rem;
  margin-top: 1rem;
}

.btn--primary {
  display: inline-block;
  background: var(--black);
  color: var(--white);
  font-family: var(--sans);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 0.95rem 2.2rem;
  transition: background 0.2s, transform 0.18s var(--ease-out);
}

.btn--primary:hover {
  background: var(--gold);
  transform: translateY(-2px);
}

.btn--ghost {
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--mid);
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
  transition: color 0.2s;
}

.btn--ghost:hover {
  color: var(--black);
}

/* ── WARNING BAND ── */
.warning-band {
  background: var(--black);
  color: var(--white);
  padding: 5rem 2rem;
  text-align: center;
}

.warning-band__badge {
  display: inline-block;
  background: var(--gold);
  color: var(--black);
  font-family: var(--sans);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  padding: 0.28rem 0.8rem;
  margin-bottom: 2rem;
}

.warning-band h3 {
  font-family: var(--serif);
  font-size: clamp(1.4rem, 2.8vw, 2.4rem);
  font-weight: 400;
  font-style: italic;
  line-height: 1.45;
  max-width: 640px;
  margin: 0 auto 1rem;
}

.warning-band p {
  font-size: 0.9rem;
  color: rgba(248, 248, 246, 0.55);
  max-width: 480px;
  margin: 0 auto;
  line-height: 1.75;
}

/* ── MARQUEE ── */
.marquee-section {
  overflow: hidden;
  padding: 4.5rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  cursor: default;
}

.marquee-track {
  display: flex;
  width: max-content;
  animation: marquee 40s linear infinite;
}

.marquee-track:hover {
  animation-play-state: paused;
}

.marquee-track--reverse {
  animation-direction: reverse;
  animation-duration: 45s;
}

.marquee__item {
  font-family: var(--serif);
  font-size: clamp(1.3rem, 2.2vw, 1.85rem);
  font-weight: 400;
  font-style: italic;
  white-space: nowrap;
  padding: 0 2.5rem;
  color: var(--black);
  user-select: none;
}

.marquee__item .sep {
  color: var(--gold);
  font-style: normal;
  margin-right: 2.5rem;
}

/* ── PREVIEWS ── */
.previews {
  padding: 7rem 0 5rem;
}

.previews__header {
  text-align: center;
  padding: 0 2rem;
  margin-bottom: 4rem;
}

.previews__header h2 {
  font-family: var(--serif);
  font-size: clamp(1.9rem, 3.5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

/* ── CAROUSEL ── */
.carousel {
  position: relative;
  /* 4:3 box capped so height never exceeds ~80vh */
  width: min(100%, 106vh);
  margin: 0 auto;
  background: var(--black);
  user-select: none;
}

.carousel__track {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.carousel__slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  pointer-events: none;
  z-index: 1;
}

.carousel__slide.is-active {
  opacity: 1;
  pointer-events: auto;
  z-index: 2;
}

.carousel__slide img {
  width: 100%;
  height: 100%;
  object-fit: cover; /* all pages are exactly 4:3 — cover == contain, no crop, no gaps */
  display: block;
}

.carousel__chapter {
  position: absolute;
  top: 1.2rem;
  right: 1.2rem;
  background: rgba(248, 248, 246, 0.92);
  backdrop-filter: blur(4px);
  font-family: var(--sans);
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding: 0.28rem 0.65rem;
  color: var(--black);
  z-index: 10;
}

.carousel__btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(248, 248, 246, 0.12);
  border: 1px solid rgba(248, 248, 246, 0.2);
  color: var(--white);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.2s;
  z-index: 20;
}

.carousel__btn:hover { background: rgba(248, 248, 246, 0.25); }
.carousel__btn svg { width: 22px; height: 22px; stroke: var(--white); }
.carousel__btn--prev { left: 1.5rem; }
.carousel__btn--next { right: 1.5rem; }

.carousel__dots {
  position: absolute;
  bottom: 1.2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.5rem;
  z-index: 20;
}

.carousel__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(248, 248, 246, 0.3);
  border: none;
  cursor: pointer;
  padding: 0;
  transition: background 0.2s, transform 0.2s;
}

.carousel__dot.is-active {
  background: var(--gold);
  transform: scale(1.3);
}

@media (max-width: 768px) {
  .carousel__btn { display: none; }
}

/* ── CHAPTERS ── */
.chapters {
  padding: 7rem 2rem;
  max-width: 960px;
  margin: 0 auto;
}

.chapters__header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.chapters__header h2 {
  font-family: var(--serif);
  font-size: clamp(1.7rem, 2.8vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.chapter-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--border);
}

.chapter-item {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  padding: 1.3rem 1.5rem 1.3rem 0;
  border-bottom: 1px solid var(--border);
  transition: background 0.15s;
}

.chapter-item:nth-child(odd) {
  border-right: 1px solid var(--border);
  padding-right: 2.5rem;
}

.chapter-item:nth-child(even) {
  padding-left: 2.5rem;
}

.chapter-item:hover {
  background: rgba(26,26,26,0.02);
}

.chapter-item__num {
  font-family: var(--serif);
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--muted);
  line-height: 1;
  min-width: 2.8rem;
  user-select: none;
}

.chapter-item__name {
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 400;
}

.chapter-item__dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  margin-left: auto;
  flex-shrink: 0;
}

/* ── BUY ── */
.buy {
  background: var(--black);
  color: var(--white);
  padding: 8rem 2rem;
  text-align: center;
}

.buy h2 {
  font-family: var(--serif);
  font-size: clamp(2rem, 5vw, 4.2rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.1;
  margin: 1rem 0 0.5rem;
}

.buy h2 em {
  font-style: italic;
  color: var(--gold);
}

.buy__sub {
  font-family: var(--serif);
  font-size: 1rem;
  font-style: italic;
  color: rgba(248, 248, 246, 0.45);
  margin-bottom: 3rem;
}

.buy-details {
  display: flex;
  justify-content: center;
  gap: 3.5rem;
  margin-bottom: 3rem;
}

.buy-detail__val {
  display: block;
  font-family: var(--serif);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--gold);
}

.buy-detail__key {
  display: block;
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(248, 248, 246, 0.35);
  margin-top: 0.3rem;
}

.btn--buy {
  display: inline-block;
  background: var(--gold);
  color: var(--black);
  font-family: var(--sans);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 1.1rem 3rem;
  transition: background 0.2s, transform 0.18s var(--ease-out);
}

.btn--buy:hover {
  background: var(--gold-light);
  transform: translateY(-2px);
}

.buy__note {
  margin-top: 1.5rem;
  font-size: 0.72rem;
  color: rgba(248, 248, 246, 0.25);
  letter-spacing: 0.06em;
}

/* ── FOOTER ── */
.footer {
  padding: 2.5rem 2.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border);
}

.footer__brand {
  font-family: var(--serif);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.footer__brand span { color: var(--gold); }

.footer__copy {
  font-size: 0.7rem;
  color: var(--mid);
  letter-spacing: 0.04em;
}

/* ── ANIMATIONS ── */
@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  to { opacity: 1; }
}

@keyframes scrollBounce {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(5px); }
}

@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal--delay-1 { transition-delay: 0.1s; }
.reveal--delay-2 { transition-delay: 0.2s; }
.reveal--delay-3 { transition-delay: 0.3s; }

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  .nav__links li:not(:last-child) { display: none; }

  .book-intro {
    grid-template-columns: 1fr;
    padding: 4rem 1.5rem;
    gap: 3rem;
  }

  .book-intro__cover::after { display: none; }

  .preview-grid { grid-template-columns: 1fr 1fr; }
  .preview-card--a,
  .preview-card--b,
  .preview-card--c,
  .preview-card--d,
  .preview-card--e,
  .preview-card--f {
    grid-column: auto;
  }

  .chapter-grid { grid-template-columns: 1fr; }
  .chapter-item:nth-child(odd) { border-right: none; padding-right: 0; }
  .chapter-item:nth-child(even) { padding-left: 0; }

  .buy-details { gap: 1.8rem; flex-wrap: wrap; }

  .footer { flex-direction: column; gap: 0.7rem; text-align: center; }
}

@media (max-width: 480px) {
  .nav { padding: 0 1.2rem; }
  .preview-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}