@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,700;0,900;1,400;1,700&family=Source+Code+Pro:wght@400;600&family=Inter:wght@300;400;600;700;800&display=swap');

:root {
  --bg: #060608;
  --bg-surface: #0d0d12;
  --bg-elevated: #14141c;
  --accent: #d4a017;
  --accent-light: #f0c040;
  --accent-dim: #8a6a10;
  --purple: #6b21a8;
  --purple-light: #a855f7;
  --purple-dim: #3b0764;
  --cyan: #00e5ff;
  --cyan-dim: #006677;
  --text: #e8e4dc;
  --text-dim: #8a8578;
  --text-muted: #5a5650;
  --red: #ff4444;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: var(--accent-dim) var(--bg);
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Playfair Display', Georgia, 'Times New Roman', serif;
  line-height: 1.8;
  font-size: 18px;
  overflow-x: hidden;
}

/* === CANVAS BACKGROUND === */
#synapse-canvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.15;
}

/* === BACK LINK === */
.back-link {
  position: fixed;
  top: 1.5rem;
  left: 1.5rem;
  z-index: 150;
  text-decoration: none;
  color: var(--text-muted);
  font-family: 'Inter', sans-serif;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: color 0.3s ease;
}

.back-link:hover {
  color: var(--accent);
}

/* === NAV === */
.chapter-nav {
  position: fixed;
  right: 2rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  align-items: flex-end;
}

.chapter-nav a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-muted);
  font-family: 'Inter', sans-serif;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: all 0.4s ease;
}

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

.chapter-nav .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--text-muted);
  transition: all 0.4s ease;
  flex-shrink: 0;
}

.chapter-nav a:hover .dot,
.chapter-nav a.active .dot {
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
  transform: scale(1.5);
}

.chapter-nav .nav-label {
  opacity: 0;
  transform: translateX(10px);
  transition: all 0.3s ease;
  white-space: nowrap;
}

.chapter-nav a:hover .nav-label {
  opacity: 1;
  transform: translateX(0);
}

/* === MOBILE NAV === */
.mobile-nav-toggle {
  display: none;
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 200;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--bg-elevated);
  border: 1px solid var(--accent-dim);
  color: var(--accent);
  font-family: 'Inter', sans-serif;
  font-size: 0.65rem;
  font-weight: 700;
  cursor: pointer;
  letter-spacing: 0.05em;
}

.mobile-nav {
  display: none;
  position: fixed;
  bottom: 5rem;
  right: 1.5rem;
  z-index: 199;
  background: var(--bg-elevated);
  border: 1px solid var(--accent-dim);
  border-radius: 12px;
  padding: 1rem;
  flex-direction: column;
  gap: 0.5rem;
}

.mobile-nav.open { display: flex; }

.mobile-nav a {
  color: var(--text-dim);
  text-decoration: none;
  font-family: 'Inter', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  transition: all 0.3s ease;
}

.mobile-nav a:hover,
.mobile-nav a.active {
  color: var(--accent);
  background: rgba(255, 255, 255, 0.04);
}

/* === HERO === */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  position: relative;
  z-index: 1;
  padding: 2rem 2rem 6rem;
}

.hero-title {
  font-family: 'Inter', sans-serif;
  font-weight: 800;
  font-size: clamp(3rem, 8vw, 7rem);
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--accent);
  text-shadow: 0 0 80px rgba(var(--accent-rgb, 212, 160, 23), 0.3);
  animation: titlePulse 4s ease-in-out infinite;
  margin-bottom: 1.5rem;
}

@keyframes titlePulse {
  0%, 100% { opacity: 0.95; }
  50% { opacity: 1; }
}

.hero-subtitle {
  font-family: 'Playfair Display', serif;
  font-style: italic;
  font-size: clamp(0.9rem, 2vw, 1.3rem);
  color: var(--text-dim);
  max-width: 600px;
  line-height: 1.6;
  margin-bottom: 3rem;
}

.hero-byline {
  font-family: 'Source Code Pro', monospace;
  font-size: 0.75rem;
  color: var(--accent-dim);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 4rem;
}

.hero-scroll {
  position: absolute;
  bottom: 1rem;
  animation: bobDown 2s ease-in-out infinite;
  color: var(--text-muted);
  font-family: 'Inter', sans-serif;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.hero-scroll::after {
  content: '';
  display: block;
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--text-muted), transparent);
  margin: 0.75rem auto 0;
}

@keyframes bobDown {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(8px); }
}

/* === MAIN CONTENT === */
.content {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
  padding: 0 2rem 6rem;
  background: rgba(6, 6, 8, 0.65);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-left: 1px solid rgba(255, 255, 255, 0.03);
  border-right: 1px solid rgba(255, 255, 255, 0.03);
  box-shadow: 0 0 80px rgba(0, 0, 0, 0.5);
}

/* === CHAPTERS === */
.chapter {
  margin-bottom: 6rem;
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.chapter.visible {
  opacity: 1;
  transform: translateY(0);
}

.chapter-header {
  margin-bottom: 3rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--accent-dim);
}

.chapter-number {
  font-family: 'Inter', sans-serif;
  font-weight: 300;
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent-dim);
  margin-bottom: 0.5rem;
}

.chapter-title {
  font-family: 'Inter', sans-serif;
  font-weight: 800;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  color: var(--accent-light);
  letter-spacing: -0.02em;
  line-height: 1.15;
}

/* === PARAGRAPHS === */
.chapter p {
  margin-bottom: 1.5rem;
  font-size: 1.05rem;
  color: var(--text);
}

.chapter p em {
  color: var(--purple-light);
  font-style: italic;
}

.chapter p strong {
  color: var(--accent-light);
  font-weight: 700;
}

.chapter p code {
  font-family: 'Source Code Pro', monospace;
  font-size: 0.88em;
  color: var(--accent);
  background: rgba(255, 255, 255, 0.04);
  padding: 0.15em 0.4em;
  border-radius: 3px;
}

/* === PULL QUOTES === */
.pull-quote {
  margin: 2.5rem 0;
  padding: 1.5rem 0 1.5rem 1.5rem;
  border-left: 3px solid var(--purple);
  font-size: 1.15rem;
  font-style: italic;
  color: var(--purple-light);
  line-height: 1.7;
  position: relative;
}

.pull-quote::before {
  content: '';
  position: absolute;
  left: -3px;
  top: 0;
  width: 3px;
  height: 100%;
  background: var(--purple);
  box-shadow: 0 0 20px var(--purple), 0 0 40px rgba(107, 33, 168, 0.3);
}

/* === BIG QUOTE === */
.big-quote {
  margin: 3rem -1rem;
  padding: 2.5rem 2rem;
  background: linear-gradient(135deg, rgba(107, 33, 168, 0.08), rgba(255, 255, 255, 0.02));
  border-radius: 8px;
  border: 1px solid rgba(107, 33, 168, 0.15);
  font-size: 1.25rem;
  font-style: italic;
  color: var(--text);
  line-height: 1.7;
  text-align: center;
}

.big-quote .attribution {
  display: block;
  margin-top: 1rem;
  font-size: 0.8rem;
  font-style: normal;
  color: var(--text-muted);
  font-family: 'Inter', sans-serif;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* === STATS TABLE === */
.stats-table {
  margin: 2rem 0;
  width: 100%;
  border-collapse: collapse;
  font-family: 'Source Code Pro', monospace;
  font-size: 0.85rem;
}

.stats-table th {
  text-align: left;
  color: var(--accent);
  font-weight: 600;
  padding: 0.75rem 1rem;
  border-bottom: 2px solid var(--accent-dim);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-size: 0.7rem;
}

.stats-table td {
  padding: 0.6rem 1rem;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  color: var(--text);
}

.stats-table td:last-child {
  color: var(--accent);
  font-weight: 600;
}

.stats-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

/* === CODE BLOCKS === */
.code-block {
  margin: 2rem 0;
  background: var(--bg-surface);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 8px;
  overflow: hidden;
}

.code-block-header {
  padding: 0.5rem 1rem;
  background: rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  font-family: 'Source Code Pro', monospace;
  font-size: 0.7rem;
  color: var(--accent-dim);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.code-block pre {
  padding: 1.25rem;
  font-family: 'Source Code Pro', monospace;
  font-size: 0.9rem;
  color: var(--accent);
  line-height: 1.6;
  overflow-x: auto;
}

/* === NUMBERED LIST === */
.opt-list {
  margin: 2rem 0;
  list-style: none;
  counter-reset: opt;
}

.opt-list li {
  counter-increment: opt;
  margin-bottom: 1.25rem;
  padding-left: 2.5rem;
  position: relative;
  font-size: 1rem;
}

.opt-list li::before {
  content: counter(opt);
  position: absolute;
  left: 0;
  top: 0.1em;
  width: 1.8rem;
  height: 1.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--accent-dim);
  color: var(--accent);
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 0.75rem;
}

.opt-list li strong {
  color: var(--accent-light);
}

/* === BULLET LIST === */
.chapter ul {
  margin: 1.5rem 0;
  list-style: none;
  padding-left: 1.5rem;
}

.chapter ul li {
  position: relative;
  margin-bottom: 0.75rem;
  padding-left: 1rem;
  font-size: 1.05rem;
}

.chapter ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent-dim);
}

/* === DIVIDER === */
.divider {
  margin: 4rem auto;
  width: 60px;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--accent), transparent);
}

/* === MIC DROP === */
.mic-drop {
  text-align: center;
  margin: 3rem 0;
  font-size: 1.4rem;
  font-style: italic;
  color: var(--accent-light);
  animation: micGlow 3s ease-in-out infinite;
}

@keyframes micGlow {
  0%, 100% { text-shadow: none; }
  50% { text-shadow: 0 0 40px rgba(255, 255, 255, 0.15); }
}

/* === FOOTER === */
.footer {
  text-align: center;
  padding: 4rem 2rem 3rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  margin-top: 4rem;
}

.footer p {
  font-style: italic;
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
  line-height: 1.8;
}

.footer p:last-child {
  color: var(--accent-dim);
  font-weight: 700;
  font-style: normal;
  font-family: 'Inter', sans-serif;
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-top: 1.5rem;
}

/* === RESPONSIVE === */
@media (max-width: 900px) {
  .chapter-nav { display: none; }
  .mobile-nav-toggle { display: flex; align-items: center; justify-content: center; }
}

@media (max-width: 600px) {
  body { font-size: 16px; }
  .content { padding: 0 1.25rem 4rem; }
  .big-quote { margin: 2rem -0.5rem; padding: 1.5rem 1.25rem; font-size: 1.05rem; }
  .pull-quote { font-size: 1rem; }
  .back-link { top: 1rem; left: 1rem; font-size: 0.6rem; }
}