/* ═══════════════════════════════════════════════════════════════════
   When the World Shook — Design System
   Industrial Victorian meets editorial modernism
   Copper/amber accents, gaslit warmth, generous whitespace
   ═══════════════════════════════════════════════════════════════════ */

/* ─── Design Tokens ─────────────────────────────────────────────── */
:root {
  /* Backgrounds — near-black with blue undertone, night sky over industrial landscape */
  --c-bg:            #0a0a0f;
  --c-bg-alt:        #0f0f18;
  --c-bg-card:       #141422;
  --c-bg-lift:       #1a1a2e;

  /* Text — warm parchment, aged paper under gaslight */
  --c-text:          #e8dfc8;
  --c-text-dim:      #b8ad96;
  --c-text-muted:    #6a6050;

  /* Accents — locomotive brass, copper, danger red */
  --c-accent:        #c9863a;
  --c-accent-dim:    #8a5d28;
  --c-secondary:     #6b8fa3;
  --c-secondary-dim: #4a6475;
  --c-warn:          #c94a2a;

  /* Borders — warm copper glow */
  --c-border:        rgba(201,134,58,0.12);
  --c-border-strong: rgba(201,134,58,0.30);

  /* Typography */
  --f-title:  'Cinzel', serif;
  --f-body:   'Inter', sans-serif;
  --f-prose:  'Crimson Pro', serif;

  /* Spacing */
  --radius:    6px;
  --radius-lg: 12px;
  --max-w:     960px;
}

/* ─── Reset ──────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--c-bg);
  color: var(--c-text);
  font-family: var(--f-body);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* ─── Typography ─────────────────────────────────────────────────── */
h1, h2, h3, h4 {
  font-family: var(--f-title);
  letter-spacing: 0.04em;
  line-height: 1.2;
}
h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); font-weight: 700; color: var(--c-text); }
h2 { font-size: clamp(1.5rem, 2.8vw, 2rem);  font-weight: 600; color: var(--c-accent); margin-bottom: 1.5rem; }
h3 { font-size: 1.15rem; font-weight: 600; color: var(--c-text); margin-bottom: 0.75rem; }
h4 { font-size: 0.95rem; font-weight: 600; color: var(--c-accent); letter-spacing: 0.06em; }

p {
  font-family: var(--f-prose);
  font-size: 1.1rem;
  color: var(--c-text-dim);
  max-width: 65ch;
}
p + p { margin-top: 1rem; }
strong { color: var(--c-text); font-weight: 600; }
em { color: var(--c-text); }

a { color: var(--c-secondary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--c-accent); }

/* ─── Blockquotes — historical voices from the past ──────────────── */
blockquote {
  border-left: 3px solid var(--c-accent);
  padding: 1.25rem 1.75rem;
  margin: 2rem 0;
  background: var(--c-bg-card);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-family: var(--f-prose);
  font-style: italic;
  color: var(--c-text-dim);
  max-width: 65ch;
}
blockquote p {
  max-width: none;
  color: var(--c-text-dim);
}
blockquote cite,
blockquote .cite {
  display: block;
  margin-top: 0.75rem;
  font-style: normal;
  font-size: 0.85rem;
  color: var(--c-text-muted);
  letter-spacing: 0.02em;
}

/* ─── Layout ─────────────────────────────────────────────────────── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2rem;
}
section { padding: 5rem 0; }
section + section { border-top: 1px solid var(--c-border); }

/* ─── Navigation ─────────────────────────────────────────────────── */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(10,10,15,0.90);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--c-border);
}
.nav-logo {
  font-family: var(--f-title);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  color: var(--c-accent);
  text-transform: uppercase;
  text-decoration: none;
  white-space: nowrap;
}
.nav-links { display: flex; gap: 1.5rem; list-style: none; flex-wrap: wrap; justify-content: flex-end; }
.nav-links a {
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-text-dim);
  transition: color 0.2s;
  white-space: nowrap;
}
.nav-links a:hover { color: var(--c-accent); }

/* ─── Hero / Cover ───────────────────────────────────────────────── */
.cover {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: flex-end;
  padding: 6rem 0 5rem;
  overflow: hidden;
}
.cover-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.45;
  /* Fallback gradient when hero image is missing */
  background-color: #1a1420;
  background-image: linear-gradient(135deg, #1a1420 0%, #0f1a2a 40%, #1a0f0f 100%);
}
.cover-gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(10,10,15,0.0) 0%,
    rgba(10,10,15,0.15) 30%,
    rgba(10,10,15,0.55) 60%,
    var(--c-bg) 100%
  );
}
.cover-content {
  position: relative;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2rem;
}
.cover-eyebrow {
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: 1.25rem;
  font-weight: 600;
}
.cover-tagline {
  font-family: var(--f-prose);
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  color: var(--c-text-dim);
  max-width: 48ch;
  margin-top: 1.5rem;
  line-height: 1.7;
}

/* ─── Stats Row — monumental numbers ─────────────────────────────── */
.stat-row {
  display: flex;
  gap: 3rem;
  margin: 0;
  padding: 3rem 0;
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
  flex-wrap: wrap;
  justify-content: center;
}
.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  min-width: 140px;
}
.stat-value {
  font-family: var(--f-title);
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  color: var(--c-accent);
  font-weight: 700;
  letter-spacing: 0.02em;
}
.stat-label {
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-text-muted);
  margin-top: 0.35rem;
  max-width: 16ch;
  line-height: 1.4;
}

/* ─── Section Headers ────────────────────────────────────────────── */
.section-header { margin-bottom: 2.5rem; }
.section-eyebrow {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-accent-dim);
  margin-bottom: 0.5rem;
  font-weight: 600;
}

/* ─── Section Content — prose containers ─────────────────────────── */
.section-prose {
  font-family: var(--f-prose);
  font-size: 1.1rem;
  color: var(--c-text-dim);
  line-height: 1.8;
}
.section-prose p {
  margin-bottom: 1.25rem;
}
.section-prose h3 {
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--c-border);
}
.section-prose h3:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}

/* ─── Pull Quotes — breathing moments between sections ───────────── */
.pull-quote {
  padding: 4rem 2rem;
  text-align: center;
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
  background: var(--c-bg-alt);
}
.pull-quote blockquote {
  border-left: none;
  background: none;
  padding: 0;
  margin: 0 auto;
  max-width: 42ch;
  text-align: center;
  font-family: var(--f-prose);
  font-size: clamp(1.2rem, 2.5vw, 1.5rem);
  font-style: italic;
  color: var(--c-text);
  line-height: 1.7;
}
.pull-quote blockquote p {
  max-width: none;
  color: var(--c-text);
  font-size: inherit;
}
.pull-quote .cite {
  display: block;
  margin-top: 1.25rem;
  font-family: var(--f-body);
  font-style: normal;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-accent);
}

/* ─── Full-width Section Images ──────────────────────────────────── */
.section-image {
  width: 100%;
  padding: 0;
  overflow: hidden;
}
.section-image img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  display: block;
  opacity: 0.7;
  filter: sepia(15%) saturate(85%);
  border-radius: 0;
}
/* Hide broken image icons when images haven't been generated yet */
.section-image img[src] {
  background: linear-gradient(135deg, var(--c-bg-alt) 0%, var(--c-bg-card) 50%, var(--c-bg-alt) 100%);
  color: transparent;
  min-height: 120px;
}
.section-image img:not([src]), .section-image img[src=""] {
  display: none;
}

/* ─── In-section Images ──────────────────────────────────────────── */
.full-image {
  width: 100%;
  border-radius: var(--radius);
  margin: 2.5rem 0;
  opacity: 0.85;
  filter: sepia(10%) saturate(90%);
}

/* ─── Grids ──────────────────────────────────────────────────────── */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}
.grid-auto {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.5rem;
}

/* ─── Cards ──────────────────────────────────────────────────────── */
.card {
  background: var(--c-bg-card);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: border-color 0.2s;
}
.card:hover {
  border-color: var(--c-border-strong);
}
.card h3 { margin-bottom: 0.5rem; }
.card h4 { margin-bottom: 0.75rem; }
.card p {
  font-size: 0.95rem;
  max-width: none;
  line-height: 1.6;
}

/* ─── Callouts ───────────────────────────────────────────────────── */
.callout {
  background: var(--c-bg-card);
  border: 1px solid var(--c-border);
  border-left: 3px solid var(--c-accent);
  border-radius: var(--radius);
  padding: 1.5rem 2rem;
  margin: 2rem 0;
}
.callout p { max-width: none; }

/* ─── Tags ───────────────────────────────────────────────────────── */
.tag {
  display: inline-block;
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.25rem 0.75rem;
  border-radius: 3px;
  font-weight: 600;
}
.tag-accent {
  background: rgba(201,134,58,0.12);
  color: var(--c-accent);
  border: 1px solid rgba(201,134,58,0.2);
}
.tag-secondary {
  background: rgba(107,143,163,0.12);
  color: var(--c-secondary);
  border: 1px solid rgba(107,143,163,0.2);
}
.tag-warn {
  background: rgba(201,74,42,0.12);
  color: var(--c-warn);
  border: 1px solid rgba(201,74,42,0.2);
}

/* ─── Section Dividers — copper rules with industrial ornament ──── */
.section-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  padding: 1rem 0;
  color: var(--c-accent-dim);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
}
.section-divider::before,
.section-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--c-border-strong), transparent);
  max-width: 200px;
}

/* ─── Tables ─────────────────────────────────────────────────────── */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  font-size: 0.9rem;
}
th {
  font-family: var(--f-body);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-text-muted);
  text-align: left;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--c-border-strong);
}
td {
  font-family: var(--f-prose);
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--c-border);
  color: var(--c-text-dim);
}

/* ─── Footer ─────────────────────────────────────────────────────── */
footer {
  padding: 4rem 0;
  text-align: center;
  border-top: 1px solid var(--c-border);
  background: var(--c-bg-alt);
}
.footer-logo {
  font-family: var(--f-title);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-accent-dim);
  margin-bottom: 0.5rem;
}
footer p {
  font-size: 0.8rem;
  color: var(--c-text-muted);
  max-width: none;
}

/* ─── Font Size Widget ──────────────────────────────────────────── */
.font-widget {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 200;
  display: flex;
  align-items: center;
  gap: 0;
  background: var(--c-bg-card);
  border: 1px solid var(--c-border-strong);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
}
.font-widget button {
  background: none;
  border: none;
  color: var(--c-text-dim);
  font-family: var(--f-body);
  font-weight: 600;
  cursor: pointer;
  padding: 0.5rem 0.75rem;
  transition: background 0.2s, color 0.2s;
  line-height: 1;
}
.font-widget button:hover {
  background: var(--c-bg-lift);
  color: var(--c-accent);
}
.font-widget button:active {
  background: rgba(201,134,58,0.15);
}
.font-widget button.fw-decrease { font-size: 0.7rem; }
.font-widget button.fw-reset   { font-size: 0.8rem; border-left: 1px solid var(--c-border); border-right: 1px solid var(--c-border); }
.font-widget button.fw-increase { font-size: 1rem; }

/* ─── Language Toggle ───────────────────────────────────────────── */
.lang-toggle {
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-text-muted);
  margin-left: 1rem;
  padding-left: 1rem;
  border-left: 1px solid var(--c-border);
  white-space: nowrap;
}
.lang-toggle a {
  color: var(--c-text-dim);
  transition: color 0.2s;
}
.lang-toggle a:hover { color: var(--c-accent); }
.lang-toggle .active {
  color: var(--c-accent);
  font-weight: 600;
}

/* ─── Utility ────────────────────────────────────────────────────── */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.mx-auto { margin-left: auto; margin-right: auto; }

/* ─── Audio Player (bottom bar) ──────────────────────────────────── */
.audio-player {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 300;
  background: rgba(10,10,15,0.97);
  backdrop-filter: blur(16px);
  border-top: 1px solid var(--c-border-strong);
  transform: translateY(100%);
  transition: transform 0.35s ease;
}
.audio-player.visible { transform: translateY(0); }

.ap-bar {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.45rem 1.25rem;
  height: 3rem;
  max-width: 1100px;
  margin: 0 auto;
}

.ap-btn {
  width: 2rem; height: 2rem;
  border: 1px solid var(--c-border-strong);
  border-radius: 50%;
  background: transparent;
  color: var(--c-text);
  font-size: 0.75rem;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}
.ap-btn:hover { border-color: var(--c-accent); color: var(--c-accent); background: rgba(201,134,58,0.08); }

.ap-skip {
  width: 1.5rem; height: 1.5rem;
  border: none;
  background: transparent;
  color: var(--c-text-dim);
  font-size: 0.7rem;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: color 0.2s;
}
.ap-skip:hover { color: var(--c-accent); }

.ap-chapter-select {
  background: var(--c-bg-card);
  border: 1px solid var(--c-border);
  border-radius: 4px;
  color: var(--c-text-dim);
  font-size: 0.65rem;
  font-family: var(--f-body);
  padding: 0.25rem 0.5rem;
  cursor: pointer;
  max-width: 16rem;
  flex-shrink: 1;
}
.ap-chapter-select:focus { outline: 1px solid var(--c-accent-dim); }
.ap-chapter-select option { background: var(--c-bg); color: var(--c-text); }

.ap-progress-wrap {
  flex: 1;
  height: 4px;
  background: rgba(255,255,255,0.06);
  border-radius: 2px;
  cursor: pointer;
  position: relative;
  min-width: 60px;
}
.ap-progress {
  height: 100%;
  background: var(--c-accent);
  border-radius: 2px;
  width: 0%;
  transition: width 0.3s linear;
  pointer-events: none;
}

.ap-time {
  font-size: 0.6rem;
  color: var(--c-text-muted);
  letter-spacing: 0.03em;
  min-width: 5.5rem;
  text-align: center;
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
}

.ap-close {
  border: none;
  background: transparent;
  color: var(--c-text-muted);
  font-size: 0.7rem;
  cursor: pointer;
  padding: 0.2rem;
  flex-shrink: 0;
  transition: color 0.2s;
}
.ap-close:hover { color: var(--c-accent); }

/* Paragraph highlight during playback */
.audio-highlight {
  position: relative;
  background: rgba(201,134,58,0.05);
  border-left: 3px solid var(--c-accent);
  padding-left: 1rem !important;
  margin-left: -1.2rem;
  border-radius: 0 4px 4px 0;
  transition: background 0.4s ease, border-color 0.4s ease;
}

/* Push page content above player when active */
body.has-audio-player { padding-bottom: 3.5rem; }

/* Move font widget up when player is visible */
body.has-audio-player .font-widget { bottom: 4.5rem; }

/* ─── Responsive ─────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .stat-row { gap: 1.5rem; }
  .stat { min-width: 120px; }
  .nav-links { display: none; }
  .cover { min-height: 75vh; padding: 4rem 0 3rem; }
  section { padding: 3.5rem 0; }
  .pull-quote { padding: 3rem 1.5rem; }
  .section-image img { height: 220px; }
  .section-prose h3 {
    margin-top: 2rem;
    padding-top: 1rem;
  }
}

@media (max-width: 480px) {
  .container { padding: 0 1.25rem; }
  .cover-tagline { font-size: 1.05rem; }
  .stat-row { gap: 1rem; }
  .stat-value { font-size: 1.6rem; }
  .pull-quote blockquote { font-size: 1.1rem; }
  .section-image img { height: 180px; }
}