/* =============================================
   MOVE FORWARD — style.css
   Design: Bold editorial / kinetic type
   Color: Light cream background, dark ink text,
          orange accent — high readability
   ============================================= */

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

:root {
  --orange: #E8390E;
  --orange-light: #FF5A2C;
  --orange-faint: rgba(232, 57, 14, 0.07);
  --page-bg: #F7F5F0;
  --surface: #FFFFFF;
  --surface-alt: #F0EDE6;
  --dark: #18170F;
  --mid: #D4D0C8;
  --border: rgba(0, 0, 0, 0.08);
  --border-warm: rgba(232, 57, 14, 0.22);
  --text-primary: #18170F;
  --text-muted: #6B6860;
  --text-dim: #9C9890;
  --font-display: 'Bebas Neue', 'Impact', 'Arial Black', sans-serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
  --font-mono: 'DM Mono', 'Courier New', monospace;
  --radius: 5px;
  --radius-lg: 12px;
  --max-w: 960px;
  --transition: 200ms ease;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--page-bg);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* =============================================
   NAV
   ============================================= */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 245, 240, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2.5rem;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: 0.06em;
  color: var(--text-primary);
  text-decoration: none;
}

.logo span {
  color: var(--orange);
}

.nav-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-dim);
}

/* =============================================
   HERO
   ============================================= */
.hero {
  position: relative;
  overflow: hidden;
  background: var(--dark);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  padding: 7rem 2.5rem 5.5rem;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 55% 65% at 82% 45%, rgba(232, 57, 14, 0.14) 0%, transparent 60%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 2;
  max-width: var(--max-w);
  margin: 0 auto;
}

.hero-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--orange-light);
  background: rgba(232, 57, 14, 0.1);
  border: 1px solid rgba(232, 57, 14, 0.25);
  padding: 0.3rem 0.8rem;
  border-radius: 3px;
  margin-bottom: 2rem;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(5rem, 14vw, 10rem);
  line-height: 0.92;
  letter-spacing: 0.02em;
  color: #F2EFE8;
  margin-bottom: 0.25em;
}

.hero-title-accent {
  color: var(--orange-light);
  display: block;
}

.hero-sub {
  max-width: 540px;
  font-size: 1.1rem;
  line-height: 1.72;
  color: rgba(242, 239, 232, 0.62);
  margin: 2rem 0 2.5rem;
}

.hero-sub strong {
  color: #F2EFE8;
  font-weight: 500;
}

.cta-btn {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  color: #fff;
  background: var(--orange);
  padding: 0.95rem 2.25rem;
  border-radius: var(--radius);
  transition: background var(--transition), transform var(--transition);
}

.cta-btn:hover {
  background: var(--orange-light);
  transform: translateY(-1px);
}

.cta-btn--light {
  background: var(--surface);
  color: var(--dark);
}

.cta-btn--light:hover {
  background: #fff;
}

.hero-bg-text {
  position: absolute;
  right: -2%;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-display);
  font-size: clamp(12rem, 28vw, 22rem);
  letter-spacing: -0.02em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(232, 57, 14, 0.07);
  user-select: none;
  pointer-events: none;
  z-index: 1;
  line-height: 1;
}

/* =============================================
   MANIFESTO
   ============================================= */
.manifesto {
  background: var(--orange);
  padding: 2.75rem 2.5rem;
}

.manifesto-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.manifesto p {
  font-size: 1.18rem;
  line-height: 1.65;
  color: #fff;
  max-width: 700px;
}

.manifesto strong {
  font-weight: 700;
  color: #fff;
}

/* =============================================
   BOOKS SECTION
   ============================================= */
.books-section {
  padding: 5.5rem 2.5rem 7rem;
}

.books-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 5.5rem;
}

/* CLUSTER */
.cluster {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.cluster-header {
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  margin-bottom: 1.75rem;
  padding-bottom: 1.5rem;
  border-bottom: 1.5px solid var(--mid);
}

.cluster-number {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--orange);
  padding-top: 0.4rem;
  min-width: 2rem;
}

.cluster-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  letter-spacing: 0.04em;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: 0.45rem;
}

.cluster-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  max-width: 480px;
  line-height: 1.6;
}

/* BOOK LIST */
.book-list {
  list-style: none;
  display: flex;
  flex-direction: column;
}

/* BOOK ITEM */
.book-item {
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
  border-radius: var(--radius);
}

.book-item:last-child {
  border-bottom: none;
}

.book-item.is-open {
  background: var(--surface);
  border-bottom-color: var(--border-warm);
}

/* BOOK ROW (button) */
.book-row {
  width: 100%;
  background: none;
  border: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: 58px 1fr 1fr auto;
  align-items: center;
  gap: 1.25rem;
  padding: 1.25rem 0.75rem;
  text-align: left;
  color: var(--text-primary);
  transition: background var(--transition);
  border-radius: var(--radius);
}

.book-row:hover {
  background: var(--surface);
}

.book-row:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
  border-radius: var(--radius);
}

/* THUMBNAIL */
.book-thumb {
  width: 52px;
  height: 72px;
  border-radius: 3px;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--mid);
  display: block;
  box-shadow: 0 2px 8px rgba(0,0,0,0.10);
}

.book-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.book-thumb-placeholder {
  width: 52px;
  height: 72px;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 3px;
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--orange);
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* BOOK META */
.book-info {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  min-width: 0;
}

.book-title {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.book-author {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ONE-LINE STATEMENT */
.book-line {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
  font-style: italic;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* CHEVRON */
.book-chevron {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 300;
  color: var(--orange);
  line-height: 1;
  width: 24px;
  text-align: center;
  transition: color var(--transition);
  flex-shrink: 0;
}

.book-item.is-open .book-chevron {
  color: var(--orange-light);
}

/* BOOK DETAIL (accordion panel) */
.book-detail {
  padding: 0.25rem 0.75rem 2rem 5.25rem;
  animation: slideDown 180ms ease;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-5px); }
  to   { opacity: 1; transform: translateY(0); }
}

.book-detail p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.75;
  max-width: 600px;
  margin-bottom: 1rem;
}

.takeaways {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  margin-bottom: 1.4rem;
}

.takeaways li {
  font-size: 0.88rem;
  color: var(--text-muted);
  padding-left: 1.35rem;
  position: relative;
}

.takeaways li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--orange);
  font-size: 0.78rem;
}

.amazon-link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.73rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--orange);
  text-decoration: none;
  border: 1px solid var(--border-warm);
  padding: 0.5rem 1.1rem;
  border-radius: var(--radius);
  background: var(--orange-faint);
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}

.amazon-link:hover {
  background: var(--orange);
  color: #fff;
  border-color: var(--orange);
}

/* =============================================
   CLOSING CTA
   ============================================= */
.closing {
  background: var(--dark);
  border-top: 1px solid rgba(255,255,255,0.05);
  padding: 7rem 2.5rem;
  text-align: center;
}

.closing-inner {
  max-width: 600px;
  margin: 0 auto;
}

.closing-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.73rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--orange-light);
  margin-bottom: 1.4rem;
}

.closing-title {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 7vw, 5rem);
  letter-spacing: 0.03em;
  line-height: 1;
  color: #F2EFE8;
  margin-bottom: 1.4rem;
}

.closing-sub {
  font-size: 1.05rem;
  color: rgba(242, 239, 232, 0.55);
  line-height: 1.75;
  margin-bottom: 2.75rem;
}

/* =============================================
   FOOTER
   ============================================= */
.footer {
  background: var(--page-bg);
  border-top: 1px solid var(--border);
  padding: 2.75rem 2.5rem;
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer p {
  font-size: 0.82rem;
  color: var(--text-dim);
  line-height: 1.65;
  max-width: 520px;
}

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 680px) {
  .hero {
    padding: 4rem 1.5rem 3.5rem;
  }

  .hero-bg-text {
    display: none;
  }

  .books-section {
    padding: 3.5rem 1.5rem 5rem;
  }

  .manifesto {
    padding: 2.25rem 1.5rem;
  }

  .manifesto p {
    font-size: 1.05rem;
  }

  .cluster-header {
    gap: 1rem;
  }

  .nav-inner {
    padding: 0 1.5rem;
  }

  .book-row {
    grid-template-columns: 52px 1fr auto;
    grid-template-rows: auto auto;
    gap: 0.5rem 1rem;
  }

  .book-thumb {
    grid-row: 1 / 3;
  }

  .book-info {
    grid-column: 2;
    grid-row: 1;
  }

  .book-line {
    grid-column: 2;
    grid-row: 2;
    -webkit-line-clamp: 1;
  }

  .book-chevron {
    grid-column: 3;
    grid-row: 1 / 3;
    align-self: center;
  }

  .book-detail {
    padding: 0.25rem 0.5rem 1.75rem 0.5rem;
  }

  .closing {
    padding: 5rem 1.5rem;
    text-align: left;
  }

  .footer-inner {
    padding: 0;
  }
}

@media (max-width: 480px) {
  .book-line {
    display: none;
  }

  .book-row {
    grid-template-rows: auto;
    grid-template-columns: 52px 1fr auto;
  }
}