/* =========================================================
   The Indispensability Trap — companion site
   Palette drawn from the book cover:
   cream #F3EBDA, deep crimson #8B1F1F, warm ink #1B1A17,
   gold ornament #B08A4C, muted #6B655A
   ========================================================= */

:root {
  --cream:       #F3EBDA;
  --cream-soft:  #EFE5D0;
  --cream-deep:  #E8DDC2;
  --ink:         #1B1A17;
  --ink-soft:    #3A362E;
  --muted:       #6B655A;
  --rule:        #C7B896;
  --crimson:     #8B1F1F;
  --crimson-dk:  #6E1717;
  --gold:        #B08A4C;
  --paper:       #FBF5E6;

  --serif: "Playfair Display", "Iowan Old Style", Georgia, "Times New Roman", serif;
  --sans:  "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;

  --wrap: 1200px;
  --wrap-narrow: 880px;

  --shadow-cover: 0 30px 60px -20px rgba(30, 20, 10, .35), 0 12px 24px -12px rgba(30, 20, 10, .25);
  --shadow-card:  0 2px 4px rgba(27, 26, 23, .04), 0 8px 24px -8px rgba(27, 26, 23, .10);
}

/* ---------- reset ---------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--cream);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--crimson); text-decoration: none; }
a:hover { color: var(--crimson-dk); text-decoration: underline; text-underline-offset: 3px; }
p { margin: 0 0 1em; }
h1,h2,h3,h4 { margin: 0 0 .5em; line-height: 1.15; color: var(--ink); }

.sr-only {
  position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden;
  clip:rect(0,0,0,0); white-space:nowrap; border:0;
}

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 clamp(20px, 4vw, 40px); }

/* ---------- typography helpers ---------- */
.eyebrow {
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--crimson);
  font-weight: 700;
  margin: 0 0 12px;
}
.eyebrow-center { text-align: center; }

.section-title {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(28px, 3.4vw, 42px);
  color: var(--ink);
  line-height: 1.15;
  letter-spacing: -.01em;
  margin: 0 0 24px;
}
.section-title-center { text-align: center; max-width: 780px; margin-left: auto; margin-right: auto; }

.lede {
  font-size: 18px;
  line-height: 1.65;
  color: var(--ink-soft);
  margin-bottom: 20px;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: .01em;
  padding: 14px 26px;
  border-radius: 2px;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: all .18s ease;
  text-decoration: none !important;
  line-height: 1;
}
.btn-primary { background: var(--crimson); color: var(--cream); border-color: var(--crimson); }
.btn-primary:hover { background: var(--crimson-dk); color: var(--cream); border-color: var(--crimson-dk); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: var(--cream); }
.btn-sm { padding: 10px 18px; font-size: 13px; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 60;
  background: rgba(243, 235, 218, .92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--rule);
  transition: box-shadow .3s ease;
}
.site-header.scrolled { box-shadow: 0 6px 24px -12px rgba(27, 26, 23, .18); }
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px;
  height: 68px;
}
.brand { display: inline-flex; align-items: center; gap: 12px; color: var(--ink); }
.brand:hover { text-decoration: none; color: var(--crimson); }
.brand-mark { width: 32px; height: 32px; color: var(--crimson); }
.brand-text {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: .01em;
}
.nav { display: flex; gap: 28px; }
.nav a {
  font-family: var(--sans); font-size: 14px; font-weight: 500;
  color: var(--ink-soft);
  letter-spacing: .02em;
}
.nav a:hover { color: var(--crimson); text-decoration: none; }

/* ---------- hero ---------- */
.hero {
  padding: clamp(48px, 8vw, 96px) 0 clamp(56px, 8vw, 100px);
  background:
    radial-gradient(1200px 500px at 20% 0%, rgba(176, 138, 76, .10), transparent 60%),
    radial-gradient(900px 400px at 90% 20%, rgba(139, 31, 31, .06), transparent 60%),
    var(--cream);
  border-bottom: 1px solid var(--rule);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: clamp(32px, 6vw, 80px);
  align-items: center;
}
.hero-copy .eyebrow { margin-bottom: 20px; }
.hero-title {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(52px, 8vw, 96px);
  line-height: .98;
  letter-spacing: -.02em;
  color: var(--ink);
  margin: 0 0 20px;
}
.hero-title em { font-style: italic; font-weight: 700; color: var(--ink); }
.hero-title .accent { color: var(--crimson); font-family: var(--serif); font-style: normal; letter-spacing: .02em; }

.rule-ornament {
  display: flex; align-items: center; gap: 12px;
  margin: 12px 0 24px;
}
.rule-ornament .line { flex: 0 0 60px; height: 1px; background: var(--gold); }
.rule-ornament .diamond { color: var(--gold); font-size: 14px; }

.hero-sub {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(20px, 2.4vw, 26px);
  line-height: 1.35;
  color: var(--ink-soft);
  margin: 0 0 28px;
  max-width: 520px;
}
.hero-lede {
  font-size: 16.5px;
  line-height: 1.65;
  color: var(--ink-soft);
  margin-bottom: 32px;
  max-width: 560px;
}
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 24px; }
.hero-foreword {
  font-size: 13px;
  color: var(--muted);
  letter-spacing: .04em;
  margin: 0;
}
.hero-foreword strong { color: var(--ink); font-weight: 600; }

.hero-cover { display: flex; flex-direction: column; align-items: center; }
.cover-frame {
  position: relative;
  transform: rotate(-1.5deg);
  transition: transform .5s cubic-bezier(.16, 1, .3, 1);
}
.cover-frame:hover { transform: rotate(0) scale(1.02); }
.cover-frame img {
  width: min(420px, 100%);
  border-radius: 2px;
  box-shadow: var(--shadow-cover);
}
.cover-caption {
  margin-top: 22px;
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ---------- pattern strip ---------- */
.pattern-strip {
  background: var(--ink);
  color: var(--cream);
  padding: 40px 0;
}
.pattern-list {
  list-style: none; margin: 0 0 16px; padding: 0;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  border-top: 1px solid rgba(243, 235, 218, .2);
  border-bottom: 1px solid rgba(243, 235, 218, .2);
}
.pattern-list li {
  padding: 20px 12px;
  display: flex; flex-direction: column; gap: 8px;
  border-right: 1px solid rgba(243, 235, 218, .12);
  text-align: center;
}
.pattern-list li:last-child { border-right: none; }
.p-num {
  font-family: var(--serif);
  font-style: italic;
  color: var(--gold);
  font-size: 14px;
  letter-spacing: .05em;
}
.p-label {
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--cream);
}
.pattern-caption {
  font-family: var(--serif);
  font-style: italic;
  font-size: 17px;
  text-align: center;
  color: var(--cream-soft);
  margin: 0;
}

/* ---------- section defaults ---------- */
.section {
  padding: clamp(64px, 9vw, 112px) 0;
}
.section-book { background: var(--cream); }
.section-buy { background: var(--cream-soft); }
.section-excerpts { background: var(--paper); }
.section-sources { background: var(--cream-deep); }
.section-author { background: var(--cream); }
.section-newsletter { background: var(--ink); color: var(--cream); }
.section-news { background: var(--cream-soft); }
.section-contact { background: var(--cream); border-top: 1px solid var(--rule); }

/* Two-column: eyebrow on left, copy on right */
.book-grid, .sources-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: clamp(24px, 5vw, 64px);
  align-items: start;
}
.section-eyebrow-col { padding-top: 8px; }
.section-eyebrow-col .eyebrow { margin: 0; }

.praise-row { margin-top: 32px; }
.praise {
  border-left: 3px solid var(--crimson);
  padding: 4px 0 4px 24px;
  margin: 0;
}
.praise p {
  font-family: var(--serif);
  font-style: italic;
  font-size: 20px;
  line-height: 1.45;
  color: var(--ink);
  margin: 0 0 10px;
}
.praise cite {
  font-family: var(--sans);
  font-style: normal;
  font-size: 13px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ---------- buy / retailers ---------- */
.retailers {
  list-style: none; margin: 40px 0 16px; padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}
.retailer {
  display: flex; flex-direction: column; gap: 6px;
  padding: 22px 24px;
  background: var(--cream);
  border: 1px solid var(--rule);
  color: var(--ink) !important;
  transition: all .18s ease;
}
.retailer:hover {
  background: var(--ink);
  color: var(--cream) !important;
  text-decoration: none;
  border-color: var(--ink);
  transform: translateY(-2px);
}
.retailer .r-name {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 20px;
}
.retailer .r-format {
  font-family: var(--sans);
  font-size: 13px;
  color: var(--muted);
  letter-spacing: .02em;
}
.retailer:hover .r-format { color: var(--cream-soft); }
.buy-note {
  text-align: center;
  font-size: 13px;
  color: var(--muted);
  margin-top: 24px;
}

/* ---------- excerpts / chapters ---------- */
.part { margin-top: 48px; }
.part:first-of-type { margin-top: 40px; }
.part-label {
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--crimson);
  font-weight: 700;
  text-align: center;
  padding: 10px 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  margin-bottom: 32px;
}
.chapters {
  list-style: none;
  counter-reset: chapter;
  margin: 0; padding: 0;
  display: grid;
  gap: 24px;
}
.chapters li {
  counter-increment: chapter;
  display: grid;
  grid-template-columns: 60px 1fr;
  grid-template-rows: auto auto;
  column-gap: 24px;
  row-gap: 4px;
  align-items: baseline;
  padding: 20px 0;
  border-bottom: 1px solid var(--rule);
}
.chapters li::before {
  content: counter(chapter, decimal-leading-zero);
  grid-column: 1;
  grid-row: 1 / span 2;
  font-family: var(--serif);
  font-style: italic;
  color: var(--crimson);
  font-size: 22px;
  line-height: 1.25;
}
.chapters li h3 { grid-column: 2; grid-row: 1; }
.chapters li p { grid-column: 2; grid-row: 2; }
/* start-number support */
.chapters[start="3"] { counter-reset: chapter 2; }
.chapters[start="7"] { counter-reset: chapter 6; }
.chapters[start="15"] { counter-reset: chapter 14; }
.chapters[start="19"] { counter-reset: chapter 18; }

.chapters h3 {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 22px;
  color: var(--ink);
  margin: 0 0 8px;
  line-height: 1.25;
}
.chapters p {
  font-size: 15.5px;
  color: var(--ink-soft);
  line-height: 1.6;
  margin: 0;
}
.excerpt-cta {
  display: flex; gap: 14px; justify-content: center; flex-wrap: wrap;
  margin-top: 48px;
}

/* ---------- sources ---------- */
.sources-columns {
  list-style: none; margin: 24px 0; padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}
.sources-columns li {
  border-top: 2px solid var(--gold);
  padding-top: 16px;
}
.sources-columns h4 {
  font-family: var(--serif);
  font-size: 16px;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--crimson);
  margin: 0 0 8px;
}
.sources-columns p {
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.55;
  margin: 0;
}
.sources-note {
  font-size: 14px;
  color: var(--muted);
  margin-top: 16px;
  font-style: italic;
}

/* ---------- author ---------- */
.author-grid {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
}
.author-photo img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 2px;
  box-shadow: var(--shadow-card);
}
.photo-caption {
  margin-top: 14px;
  font-family: var(--serif);
  font-size: 17px;
  color: var(--ink);
  text-align: center;
}
.photo-caption span {
  display: block;
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 4px;
}
.author-links {
  list-style: none; margin: 24px 0 0; padding: 0;
  display: flex; gap: 20px; flex-wrap: wrap;
}
.author-links a {
  font-size: 14px;
  padding: 8px 0;
  border-bottom: 1px solid var(--rule);
  color: var(--ink);
}
.author-links a:hover { color: var(--crimson); border-color: var(--crimson); text-decoration: none; }

/* ---------- newsletter ---------- */
.newsletter-inner { text-align: center; max-width: 640px; margin: 0 auto; }
.section-newsletter .eyebrow { color: var(--gold); }
.section-newsletter .section-title { color: var(--cream); }
.newsletter-sub { color: var(--cream-soft); margin-bottom: 24px; }
.newsletter-form {
  display: flex; gap: 10px; flex-wrap: wrap; justify-content: center;
  max-width: 480px; margin: 0 auto;
}
.newsletter-form input[type="email"] {
  flex: 1 1 240px;
  padding: 14px 16px;
  border: 1.5px solid var(--cream-soft);
  background: transparent;
  color: var(--cream);
  font-family: var(--sans);
  font-size: 15px;
  border-radius: 2px;
}
.newsletter-form input[type="email"]::placeholder { color: rgba(243, 235, 218, .5); }
.newsletter-form input[type="email"]:focus {
  outline: none;
  border-color: var(--gold);
}
.newsletter-form .btn-primary {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--ink);
}
.newsletter-form .btn-primary:hover { background: var(--cream); border-color: var(--cream); color: var(--ink); }
.newsletter-note {
  font-size: 12px;
  color: rgba(243, 235, 218, .55);
  margin-top: 16px;
}
.newsletter-note code { background: rgba(243, 235, 218, .1); padding: 2px 6px; border-radius: 2px; }

/* ---------- news ---------- */
.news-grid {
  list-style: none; margin: 40px 0 0; padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}
.news-card {
  background: var(--cream);
  padding: 28px;
  border: 1px solid var(--rule);
  border-top: 3px solid var(--crimson);
}
.news-date {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 700;
  margin-bottom: 12px;
}
.news-card h3 {
  font-family: var(--serif);
  font-size: 22px;
  margin: 0 0 10px;
}
.news-card p {
  font-size: 14.5px;
  color: var(--ink-soft);
  margin: 0;
  line-height: 1.55;
}

/* ---------- contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-top: 40px;
}
.contact-card {
  padding: 32px 24px;
  background: var(--cream-soft);
  text-align: center;
  border: 1px solid var(--rule);
}
.contact-card h3 {
  font-family: var(--serif);
  font-size: 20px;
  margin: 0 0 8px;
}
.contact-card p {
  font-size: 14px;
  color: var(--muted);
  margin: 0 0 12px;
}
.contact-card a {
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 600;
  color: var(--crimson);
  word-break: break-word;
}
.contact-note {
  text-align: center;
  font-size: 13px;
  color: var(--muted);
  margin-top: 24px;
  font-style: italic;
}

/* ---------- footer ---------- */
.site-footer {
  background: var(--ink);
  color: var(--cream);
  padding: 56px 0 32px;
  border-top: 3px solid var(--crimson);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(243, 235, 218, .15);
  margin-bottom: 24px;
}
.footer-title {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--cream);
}
.footer-sub {
  font-family: var(--serif);
  font-style: italic;
  font-size: 15px;
  color: var(--cream-soft);
  margin: 0 0 4px;
}
.footer-imprint {
  font-size: 13px;
  color: var(--muted);
  letter-spacing: .04em;
  margin: 0;
}
.footer-nav {
  display: flex; flex-direction: column; gap: 10px;
}
.footer-nav a {
  color: var(--cream-soft);
  font-size: 14px;
}
.footer-nav a:hover { color: var(--gold); text-decoration: none; }
.footer-meta {
  font-size: 12.5px;
  color: var(--muted);
  letter-spacing: .04em;
  text-align: right;
}
.footer-meta p { margin: 0 0 4px; }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .nav { display: none; }
  .hero-grid { grid-template-columns: 1fr; text-align: left; }
  .hero-cover { order: -1; }
  .cover-frame { transform: none; }
  .book-grid, .sources-grid, .author-grid {
    grid-template-columns: 1fr;
  }
  .section-eyebrow-col { padding-top: 0; }
  .pattern-list { grid-template-columns: repeat(2, 1fr); }
  .pattern-list li { border-right: none; border-bottom: 1px solid rgba(243, 235, 218, .12); }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-meta { text-align: left; }
  .author-photo { max-width: 260px; margin: 0 auto; }
}

@media (max-width: 600px) {
  .brand-text { display: none; }
  .header-inner { height: 60px; }
  .hero-title { font-size: 42px; }
  .chapters li { grid-template-columns: 40px 1fr; gap: 16px; }
  .chapters li::before { font-size: 18px; }
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
}