/* ============================================================
   How Information Changed the World — chapter shared styles
   Used by every chapter, prologue, and epilogue. The landing
   page (index.html) has its own embedded styles for the cover.
   ============================================================ */

:root {
  --bg: #f6efe1;
  --bg-deep: #efe5d0;
  --ink: #2a221b;
  --ink-soft: #4a3f33;
  --rule: #d9c9a8;
  --accent: #8a2a2a;
  --accent-soft: #b85c4f;
  --gold: #c89b3c;
  --blue-gray: #6c7a89;
  --red-deep: #7a1d1d;
  --shadow: 0 2px 14px rgba(60, 40, 20, 0.08);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Lora', Georgia, 'Times New Roman', serif;
  font-size: 19px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

article {
  max-width: 760px;
  margin: 0 auto;
  padding: 60px 32px 120px;
}

/* HEADER */
header.chapter-header {
  text-align: center;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 60px;
}

.series {
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 24px;
  font-weight: 600;
}

.chapter-num {
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0 0 8px;
}

h1 {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-weight: 600;
  font-size: 52px;
  line-height: 1.1;
  margin: 0 0 16px;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.subtitle {
  font-family: 'Lora', serif;
  font-style: italic;
  font-size: 18px;
  color: var(--ink-soft);
  margin: 0;
}

/* SECTION HEADINGS */
h2 {
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 56px 0 20px;
  font-weight: 700;
  position: relative;
  padding-bottom: 12px;
}

h2::after {
  content: "";
  display: block;
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 2px;
  background: var(--accent);
}

p {
  margin: 0 0 22px;
}

/* THE MOMENT — dramatic opening */
.moment {
  background: var(--bg-deep);
  border-left: 4px solid var(--accent);
  padding: 32px 36px;
  margin: 40px -36px;
  border-radius: 2px;
  box-shadow: var(--shadow);
}

.moment h2 {
  margin-top: 0;
}

.moment p:first-of-type::first-letter {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: 64px;
  font-weight: 600;
  float: left;
  line-height: 0.9;
  margin: 6px 10px 0 0;
  color: var(--accent);
}

.moment p {
  font-size: 19px;
  line-height: 1.65;
}

.moment .nailed {
  text-align: center;
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  font-size: 22px;
  color: var(--accent);
  margin: 28px 0;
  letter-spacing: 0.02em;
}

/* IMAGE PLACEHOLDER */
.image-placeholder {
  border: 1.5px dashed var(--accent-soft);
  background: rgba(255, 255, 255, 0.4);
  padding: 40px 24px;
  text-align: center;
  margin: 32px 0;
  border-radius: 4px;
}

.image-placeholder .icon {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent-soft);
  margin-bottom: 14px;
  font-weight: 600;
}

.image-placeholder .desc {
  font-family: 'Lora', serif;
  font-style: italic;
  color: var(--ink-soft);
  font-size: 16px;
  margin: 0;
}

.image-placeholder .caption {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  color: var(--ink-soft);
  font-style: normal;
}

/* REAL IMAGES (replaces .image-placeholder once an image is sourced) */
.image {
  margin: 32px 0;
  padding: 0;
  text-align: center;
}

.image img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 3px;
  border: 1px solid var(--rule);
  box-shadow: var(--shadow);
}

.image figcaption {
  margin: 14px 4px 0;
  font-family: 'Lora', serif;
  font-style: italic;
  font-size: 14px;
  line-height: 1.5;
  color: var(--ink-soft);
  text-align: center;
}

.image figcaption .credit {
  display: block;
  margin-top: 4px;
  font-family: 'Inter', sans-serif;
  font-style: normal;
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--ink-soft);
  opacity: 0.85;
}

@media (max-width: 640px) {
  .image figcaption { font-size: 13px; }
  .image figcaption .credit { font-size: 10px; }
}

/* VOICES FROM THE TIME */
.voices {
  background: #fff8ea;
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 32px 36px;
  margin: 40px 0;
  position: relative;
}

.voices::before {
  content: "❝";
  font-family: 'Cormorant Garamond', serif;
  font-size: 80px;
  color: var(--accent-soft);
  position: absolute;
  top: -8px;
  left: 18px;
  line-height: 1;
  opacity: 0.4;
}

.voices .label {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
  margin: 0 0 16px;
  position: relative;
  z-index: 1;
}

.voices blockquote {
  margin: 0;
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  font-size: 22px;
  line-height: 1.5;
  color: var(--ink);
  position: relative;
  z-index: 1;
}

.voices cite {
  display: block;
  margin-top: 16px;
  font-family: 'Inter', sans-serif;
  font-style: normal;
  font-size: 13px;
  color: var(--ink-soft);
  letter-spacing: 0.05em;
}

/* PATTERN TRACKER */
.pattern-tracker {
  margin: 48px 0;
  padding: 32px 24px;
  background: #fff;
  border: 1px solid var(--rule);
  border-radius: 6px;
  box-shadow: var(--shadow);
}

.pattern-tracker .label {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--ink-soft);
  text-align: center;
  margin: 0 0 8px;
  font-weight: 600;
}

.pattern-tracker .title {
  font-family: 'Cormorant Garamond', serif;
  font-size: 22px;
  text-align: center;
  margin: 0 0 24px;
  color: var(--ink);
}

.pattern-tracker svg {
  display: block;
  width: 100%;
  height: auto;
}

.pattern-tracker figcaption {
  font-family: 'Lora', serif;
  font-style: italic;
  font-size: 14px;
  color: var(--ink-soft);
  text-align: center;
  margin-top: 18px;
}

/* KEY WORDS SIDEBAR */
.key-words {
  background: var(--bg-deep);
  border-radius: 6px;
  padding: 28px 32px;
  margin: 48px 0;
}

.key-words h3 {
  font-family: 'Inter', sans-serif;
  font-size: 12px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 20px;
  font-weight: 700;
}

.key-words dl {
  margin: 0;
  display: grid;
  gap: 14px;
}

.key-words dt {
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  color: var(--accent);
  font-size: 15px;
  display: inline;
}

.key-words dd {
  display: inline;
  margin: 0;
  font-size: 16px;
  color: var(--ink);
  line-height: 1.55;
}

.key-words dt::after {
  content: " — ";
  color: var(--ink-soft);
  font-weight: 400;
}

.key-words .entry {
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(160, 130, 80, 0.18);
}

.key-words .entry:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

/* REFLECT */
.reflect {
  background: linear-gradient(to bottom, var(--bg-deep), var(--bg));
  border-radius: 6px;
  padding: 32px 36px;
  margin-top: 56px;
  border-top: 3px solid var(--accent);
}

.reflect h2 {
  margin-top: 0;
}

.reflect ol {
  padding-left: 0;
  counter-reset: q;
  list-style: none;
  margin: 0;
}

.reflect ol li {
  counter-increment: q;
  padding-left: 56px;
  position: relative;
  margin-bottom: 24px;
  font-size: 17px;
  line-height: 1.6;
}

.reflect ol li::before {
  content: counter(q);
  position: absolute;
  left: 0;
  top: -4px;
  font-family: 'Cormorant Garamond', serif;
  font-size: 38px;
  font-weight: 600;
  color: var(--accent);
  line-height: 1;
}

.reflect ol li:last-child {
  margin-bottom: 0;
}

/* FOOTER NAV */
.chapter-nav {
  margin-top: 80px;
  padding-top: 32px;
  border-top: 1px solid var(--rule);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--ink-soft);
  gap: 24px;
}

.chapter-nav a {
  color: inherit;
  text-decoration: none;
  display: block;
  padding: 8px 0;
  transition: color 0.15s ease;
}

.chapter-nav a:hover .title {
  color: var(--accent);
}

.chapter-nav .next {
  text-align: right;
}

.chapter-nav .label {
  display: block;
  font-size: 11px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--accent-soft);
  margin-bottom: 4px;
}

.chapter-nav .title {
  font-family: 'Cormorant Garamond', serif;
  font-size: 18px;
  font-style: italic;
  color: var(--ink);
}

/* PROLOGUE / EPILOGUE — slightly different from chapters */
.prologue-header,
.epilogue-header {
  text-align: center;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 60px;
}

.prologue-header h1,
.epilogue-header h1 {
  font-style: italic;
}

/* RESPONSIVE */
@media (max-width: 640px) {
  article { padding: 40px 20px 80px; }
  body { font-size: 17px; }
  h1 { font-size: 36px; }
  .moment { margin: 32px -20px; padding: 24px 24px; }
  .voices { padding: 24px 24px; }
  .reflect { padding: 24px 24px; }
  .key-words { padding: 22px 24px; }
  .reflect ol li { padding-left: 44px; font-size: 16px; }
  .reflect ol li::before { font-size: 30px; }
  .chapter-nav { flex-direction: column; gap: 24px; align-items: stretch; }
  .chapter-nav .next { text-align: left; }
}

/* ============================================================
   Vocab click-to-define
   ============================================================ */

.vocab {
  cursor: pointer;
  border-bottom: 1.5px dotted var(--accent);
  color: inherit;
  position: relative;
  transition: background .15s ease;
  padding: 0 1px;
}
.vocab:hover,
.vocab:focus {
  background: rgba(138, 42, 42, .10);
  outline: none;
}
.vocab.is-open {
  background: rgba(138, 42, 42, .15);
}

.vocab-pop {
  position: absolute;
  z-index: 1000;
  max-width: min(320px, calc(100vw - 16px));
  background: var(--bg);
  border: 1px solid rgba(42, 34, 27, .35);
  padding: .85rem 1rem;
  font-family: 'Lora', Georgia, 'Times New Roman', serif;
  font-size: 16px;
  line-height: 1.5;
  color: var(--ink);
  box-shadow: 3px 4px 0 rgba(42, 34, 27, .12);
  animation: vocab-fade-in .15s ease-out;
}
.vocab-pop::before {
  content: "";
  position: absolute;
  inset: 3px;
  border: 1px solid rgba(42, 34, 27, .12);
  pointer-events: none;
}
@keyframes vocab-fade-in {
  from { opacity: 0; transform: translateY(-2px); }
  to   { opacity: 1; transform: translateY(0); }
}
.vocab-pop-term {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: .4rem;
}
.vocab-pop-def {
  color: var(--ink);
}