:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: #1a1a28;
  --bg-highlight: #222236;
  --gold: #c9a84c;
  --gold-dim: #8b7535;
  --gold-glow: rgba(201,168,76,0.15);
  --red: #d4443b;
  --red-dim: rgba(212,68,59,0.2);
  --green: #4caf50;
  --green-dim: rgba(76,175,80,0.15);
  --blue: #5b8fd9;
  --blue-dim: rgba(91,143,217,0.15);
  --orange: #e68a3b;
  --orange-dim: rgba(230,138,59,0.15);
  --purple: #9b6fd9;
  --purple-dim: rgba(155,111,217,0.15);
  --text-primary: #e8e4dc;
  --text-secondary: #9a968e;
  --text-dim: #6b6860;
  --border: rgba(201,168,76,0.12);
}

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

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Source Serif 4', Georgia, serif;
  line-height: 1.7;
  overflow-x: hidden;
}

::selection { background: var(--gold); color: var(--bg-primary); }
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--gold-dim); border-radius: 3px; }

.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 2rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: 
    radial-gradient(ellipse 800px 400px at 50% 40%, rgba(201,168,76,0.06) 0%, transparent 70%),
    radial-gradient(ellipse 600px 600px at 20% 80%, rgba(212,68,59,0.04) 0%, transparent 70%),
    radial-gradient(ellipse 600px 600px at 80% 80%, rgba(91,143,217,0.04) 0%, transparent 70%);
  pointer-events: none;
}

.hero-subtitle {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 6px;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 2rem;
  opacity: 0;
  animation: fadeUp 1s 0.3s forwards;
}

.hero-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2rem, 5vw, 4.5rem);
  font-weight: 800;
  line-height: 1.15;
  max-width: 900px;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeUp 1s 0.6s forwards;
}

.hero-title span { color: var(--gold); }

.hero-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 650px;
  opacity: 0;
  animation: fadeUp 1s 0.9s forwards;
  margin-bottom: 3rem;
}

.hero-stats {
  display: flex;
  gap: 3rem;
  flex-wrap: wrap;
  justify-content: center;
  opacity: 0;
  animation: fadeUp 1s 1.2s forwards;
}

.hero-stat {
  text-align: center;
}

.hero-stat-value {
  font-family: 'Playfair Display', serif;
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--gold);
}

.hero-stat-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-top: 0.3rem;
}

.scroll-cue {
  position: absolute;
  bottom: 2rem;
  opacity: 0;
  animation: fadeUp 1s 1.5s forwards, pulse 2s 2.5s infinite;
  color: var(--gold-dim);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 4px;
  text-transform: uppercase;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

/* Navigation */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10,10,15,0.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 0 1rem;
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.nav-inner::-webkit-scrollbar { display: none; }

.nav-btn {
  background: none;
  border: none;
  color: var(--text-dim);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 1rem 1.2rem;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.3s;
  border-bottom: 2px solid transparent;
  position: relative;
}

.nav-btn:hover { color: var(--text-secondary); }
.nav-btn.active { color: var(--gold); border-bottom-color: var(--gold); }

/* Content sections */
.content { max-width: 1100px; margin: 0 auto; padding: 0 1.5rem; }

.era {
  padding: 4rem 0;
  border-bottom: 1px solid var(--border);
  opacity: 0;
  transform: translateY(40px);
  transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.era-header {
  display: flex;
  align-items: baseline;
  gap: 1.5rem;
  margin-bottom: 0.5rem;
  flex-wrap: wrap;
}

.era-period {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 3px;
  color: var(--gold);
  background: var(--gold-glow);
  padding: 0.3rem 0.8rem;
  border-radius: 2px;
}

.era-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
}

.era-subtitle {
  color: var(--text-primary);
  font-size: 1.05rem;
  margin-bottom: 2rem;
  font-style: italic;
  opacity: 0.85;
}

.era-body { margin-bottom: 2rem; color: var(--text-secondary); font-size: 0.95rem; line-height: 1.8; }
.era-body p { margin-bottom: 1rem; }
.era-body strong { color: var(--text-primary); font-weight: 600; }

/* Event cards */
.events-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}

.event-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1.5rem;
  transition: all 0.3s;
  cursor: default;
  position: relative;
  overflow: hidden;
}

.event-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px;
  height: 100%;
}

.event-card.military::before { background: var(--red); }
.event-card.economic::before { background: var(--gold); }
.event-card.geopolitical::before { background: var(--blue); }
.event-card.social::before { background: var(--green); }
.event-card.energy::before { background: var(--orange); }
.event-card.tech::before { background: var(--purple); }

.event-card:hover {
  border-color: var(--gold-dim);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.3);
}

.event-year {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 2px;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.event-title {
  font-family: 'Playfair Display', serif;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.event-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.event-tag {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.55rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 0.2rem 0.5rem;
  border-radius: 2px;
  margin-top: 0.8rem;
}

.event-card.military .event-tag { background: var(--red-dim); color: var(--red); }
.event-card.economic .event-tag { background: var(--gold-glow); color: var(--gold); }
.event-card.geopolitical .event-tag { background: var(--blue-dim); color: var(--blue); }
.event-card.social .event-tag { background: var(--green-dim); color: var(--green); }
.event-card.energy .event-tag { background: var(--orange-dim); color: var(--orange); }
.event-card.tech .event-tag { background: var(--purple-dim); color: var(--purple); }

/* Impact section */
.impact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}

.impact-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1.5rem;
  text-align: center;
}

.impact-icon { font-size: 2rem; margin-bottom: 0.8rem; }

.impact-title {
  font-family: 'Playfair Display', serif;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.impact-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.7;
  text-align: left;
}

/* Debt tracker */
.debt-tracker {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2rem;
  margin: 2rem 0;
}

.debt-bar-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1.5rem;
}

.debt-bar-row {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.debt-bar-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 1px;
  color: var(--text-primary);
  width: 80px;
  text-align: right;
  flex-shrink: 0;
  font-weight: 500;
}

.debt-bar-track {
  flex: 1;
  height: 36px;
  background: var(--bg-highlight);
  border-radius: 3px;
  position: relative;
}

.debt-bar-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 1.5s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  align-items: center;
  padding-left: 0.8rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: #ffffff;
  font-weight: 600;
  white-space: nowrap;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.6);
  min-width: max-content;
}

/* Filter controls */
.filter-bar {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.filter-btn {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 0.5rem 1rem;
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.3s;
}

.filter-btn:hover { border-color: var(--gold-dim); color: var(--text-secondary); }
.filter-btn.active { background: var(--gold-glow); border-color: var(--gold); color: var(--gold); }

/* Quote blocks */
.quote-block {
  border-left: 2px solid var(--gold);
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
  background: var(--gold-glow);
  border-radius: 0 4px 4px 0;
}

.quote-text {
  font-style: italic;
  color: var(--text-primary);
  font-size: 0.95rem;
}

.quote-attr {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 2px;
  color: var(--gold-dim);
  margin-top: 0.5rem;
}

/* Domino chain */
.domino-chain {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin: 2rem 0;
}

.domino {
  display: flex;
  align-items: stretch;
  min-height: 60px;
}

.domino-line {
  width: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
}

.domino-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--gold);
  flex-shrink: 0;
}

.domino-connector {
  width: 2px;
  flex: 1;
  background: linear-gradient(to bottom, var(--gold), var(--gold-dim));
}

.domino-content {
  flex: 1;
  padding: 0.3rem 0 1.2rem 1rem;
}

.domino-title {
  font-family: 'Playfair Display', serif;
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.3rem;
  color: var(--text-primary);
}

.domino-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Footer */
.footer {
  padding: 4rem 1.5rem;
  text-align: center;
  border-top: 1px solid var(--border);
  margin-top: 4rem;
}

.footer-text {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 3px;
  color: var(--text-dim);
  text-transform: uppercase;
}

.footer-brand {
  font-family: 'Playfair Display', serif;
  font-size: 1.2rem;
  color: var(--gold);
  margin-top: 0.5rem;
}

/* Collapsible sections */
.collapse-trigger {
  background: none;
  border: none;
  color: var(--gold);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  cursor: pointer;
  padding: 0.5rem 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: opacity 0.3s;
}

.collapse-trigger:hover { opacity: 0.8; }
.collapse-trigger .arrow { transition: transform 0.3s; }
.collapse-trigger.open .arrow { transform: rotate(90deg); }

.collapse-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.collapse-body.open { max-height: 5000px; }

/* Copyright attribution banner */
.copyright-banner {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--gold-dim);
  text-align: center;
  padding: 0.8rem 1.5rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-secondary);
  position: sticky;
  top: 0;
  z-index: 99;
}

/* Print protection — copyright appears on every printed page */
@media print {
  .copyright-banner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    font-size: 9pt;
    color: #333;
    background: #fff;
    border-bottom: 1px solid #ccc;
  }

  body::after {
    content: "\00a9  2026 Shrey Kant Chaurasia / Shades of Shrey. All rights reserved. Unauthorized reproduction prohibited.";
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    text-align: center;
    font-size: 8pt;
    color: #666;
    padding: 6px;
    font-family: monospace;
  }
}

/* Responsive */
@media (max-width: 768px) {
  .hero-stats { gap: 1.5rem; }
  .events-grid { grid-template-columns: 1fr; }
  .impact-grid { grid-template-columns: 1fr 1fr; }
  .nav-btn { padding: 0.8rem 0.8rem; font-size: 0.55rem; }
  .debt-bar-label { width: 50px; font-size: 0.65rem; }
  .debt-bar-track { height: 32px; }
  .debt-bar-fill { font-size: 0.62rem; }
}

@media (max-width: 480px) {
  .impact-grid { grid-template-columns: 1fr; }
}