/* ═══════════════════════════════════════════════════════ */
/* THE ALGORITHMIC TAX — VISUAL ESSAY DESIGN SYSTEM       */
/* ═══════════════════════════════════════════════════════ */

:root {
  --bg: #0a0a0c;
  --bg2: #101014;
  --bg3: #16161a;
  --bg4: #1c1c22;
  --coral: #c97b63;
  --coral-glow: rgba(201,123,99,0.15);
  --gold: #c9a84c;
  --gold-dim: rgba(201,168,76,0.1);
  --teal: #4ecdc4;
  --red: #e74c3c;
  --green: #2ecc71;
  --text: #f0ece2;
  --text2: #a8a29e;
  --text3: #6b6560;
  --border: rgba(201,168,76,0.12);
  --font-serif: 'Cormorant Garamond', Georgia, serif;
  --font-sans: 'DM Sans', -apple-system, sans-serif;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-sans); background: var(--bg); color: var(--text); overflow-x: hidden; -webkit-font-smoothing: antialiased; }

/* ═══ PROGRESS BAR ═══ */
.progress-bar { position: fixed; top: 0; left: 0; height: 3px; background: linear-gradient(90deg, var(--coral), var(--gold)); z-index: 300; transition: width 0.1s; width: 0%; }

/* ═══ NAV ═══ */
.essay-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  padding: 0 32px; height: 56px;
  display: flex; align-items: center; justify-content: space-between;
  background: rgba(10,10,12,0.85); backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border);
}
.nav-brand { color: var(--coral); text-decoration: none; font-size: 0.75rem; letter-spacing: 3px; text-transform: uppercase; font-weight: 700; }
.nav-links { display: flex; gap: 4px; }
.nav-link {
  color: var(--text3); text-decoration: none; font-size: 0.7rem; letter-spacing: 1.5px; text-transform: uppercase;
  padding: 6px 14px; border-radius: 20px; transition: all 0.3s var(--ease);
}
.nav-link:hover { color: var(--text2); }
.nav-link.active { color: var(--coral); background: var(--coral-glow); }
.audio-toggle {
  display: flex; align-items: center; gap: 6px;
  background: rgba(201,123,99,0.1); border: 1px solid rgba(201,123,99,0.2);
  color: var(--coral); padding: 6px 14px; border-radius: 20px;
  cursor: pointer; font-size: 0.7rem; letter-spacing: 1px; text-transform: uppercase;
  font-family: var(--font-sans); transition: all 0.3s var(--ease);
}
.audio-toggle:hover { background: rgba(201,123,99,0.2); }
.audio-toggle.playing { background: var(--coral); color: var(--bg); }
.audio-toggle.playing svg { animation: audioWave 1s ease infinite; }
@keyframes audioWave { 0%,100%{transform:scale(1);} 50%{transform:scale(1.1);} }

/* ═══ MOBILE MENU TOGGLE ═══ */
.menu-toggle {
  display: none; align-items: center; justify-content: center;
  width: 36px; height: 36px; background: transparent;
  border: 1px solid var(--border); border-radius: 8px;
  cursor: pointer; color: var(--text2); transition: all 0.3s var(--ease);
}
.menu-toggle:hover { border-color: var(--coral); color: var(--coral); }
.menu-toggle svg { pointer-events: none; }
.mobile-overlay {
  position: fixed; inset: 0; z-index: 190;
  background: rgba(10,10,12,0.96); backdrop-filter: blur(24px);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px;
  opacity: 0; pointer-events: none; transition: opacity 0.4s var(--ease);
}
.mobile-overlay.open { opacity: 1; pointer-events: auto; }
.mobile-overlay .mobile-nav-link {
  color: var(--text2); text-decoration: none; font-size: 1.2rem;
  letter-spacing: 2px; text-transform: uppercase; font-family: var(--font-sans);
  padding: 14px 32px; border-radius: 12px; transition: all 0.3s var(--ease);
}
.mobile-overlay .mobile-nav-link:hover,
.mobile-overlay .mobile-nav-link.active { color: var(--coral); background: var(--coral-glow); }
.mobile-overlay .mobile-close {
  position: absolute; top: 16px; right: 20px;
  background: transparent; border: none; color: var(--text3);
  font-size: 1.8rem; cursor: pointer; padding: 8px;
  transition: color 0.3s;
}
.mobile-overlay .mobile-close:hover { color: var(--coral); }

/* ═══ HERO ═══ */
.hero-section {
  min-height: 100vh; display: flex; flex-direction: column;
  align-items: center; justify-content: center; text-align: center;
  position: relative; overflow: hidden;
  background: radial-gradient(ellipse at 50% 40%, var(--coral-glow) 0%, transparent 60%);
}
.hero-particles { position: absolute; inset: 0; pointer-events: none; }
.hero-content { position: relative; z-index: 1; }
.hero-eyebrow { font-size: 0.7rem; letter-spacing: 4px; text-transform: uppercase; color: var(--coral); margin-bottom: 24px; opacity: 0; animation: fadeUp 1s 0.3s forwards; }
.hero-title { font-family: var(--font-serif); font-size: clamp(3rem, 9vw, 6rem); font-weight: 700; line-height: 1.05; margin-bottom: 20px; opacity: 0; animation: fadeUp 1s 0.5s forwards; }
.hero-title em { color: var(--coral); font-style: italic; }
.hero-sub { font-size: clamp(1rem, 2vw, 1.3rem); color: var(--text2); line-height: 1.6; opacity: 0; animation: fadeUp 1s 0.7s forwards; }
.hero-author { margin-top: 40px; opacity: 0; animation: fadeUp 1s 0.9s forwards; }
.author-name { display: block; color: var(--coral); font-weight: 600; font-size: 0.9rem; }
.author-creds { display: block; color: var(--text3); font-size: 0.75rem; margin-top: 4px; }
.scroll-hint { position: absolute; bottom: 40px; font-size: 0.65rem; color: var(--text3); letter-spacing: 4px; text-transform: uppercase; animation: pulse 2s infinite; }
@keyframes pulse { 0%,100%{opacity:0.3;} 50%{opacity:0.8;} }
@keyframes fadeUp { from{opacity:0;transform:translateY(24px);} to{opacity:1;transform:translateY(0);} }

.hero-part2 { background: radial-gradient(ellipse at 50% 40%, rgba(231,76,60,0.08) 0%, transparent 60%); }
.hero-part3 { background: radial-gradient(ellipse at 50% 40%, rgba(78,205,196,0.08) 0%, transparent 60%); }
.hero-part2 .hero-title em { color: var(--red); }
.hero-part3 .hero-title em { color: var(--teal); }

/* ═══ SECTIONS ═══ */
.essay-section { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 100px 40px; position: relative; }
.essay-section.dark { background: var(--bg2); }
.essay-section .inner { max-width: 760px; width: 100%; }

.essay-prose { font-size: 1.15rem; line-height: 2; color: var(--text2); }
.essay-prose strong { color: var(--text); font-weight: 600; }
.essay-prose em.hi { color: var(--coral); font-style: normal; font-weight: 600; }
.essay-prose.center { text-align: center; }
.essay-prose .big { font-size: 1.5rem; display: block; margin: 8px 0; }

.essay-quote { font-family: var(--font-serif); font-size: clamp(1.5rem, 3.5vw, 2.5rem); font-style: italic; line-height: 1.5; text-align: center; }
.essay-quote .attr { display: block; font-size: 0.85rem; font-style: normal; color: var(--coral); margin-top: 16px; font-family: var(--font-sans); }

.essay-divider { text-align: center; padding: 48px 0; }
.essay-divider span { display: inline-block; width: 80px; height: 1px; background: linear-gradient(90deg, transparent, var(--coral), transparent); }

.section-intro { font-family: var(--font-serif); font-size: 1.8rem; text-align: center; line-height: 1.5; color: var(--text); }
.section-heading { font-family: var(--font-serif); font-size: 2rem; text-align: center; color: var(--text); margin-bottom: 48px; }

/* ═══ COUNTER ═══ */
.counter-section { text-align: center; }
.counter-num { font-family: var(--font-serif); font-size: clamp(5rem, 12vw, 10rem); font-weight: 700; color: var(--coral); line-height: 1; }
.counter-label { font-size: 0.85rem; color: var(--text3); margin-top: 8px; letter-spacing: 3px; text-transform: uppercase; }
.counter-context { font-size: 1.1rem; color: var(--text2); margin-top: 32px; line-height: 1.7; }

/* ═══ TAX CARDS ═══ */
.tax-card {
  background: var(--bg3); border: 1px solid var(--border); border-radius: 16px;
  padding: 40px; margin: 24px 0; position: relative;
  transition: transform 0.3s var(--ease), border-color 0.3s;
}
.tax-card:hover { transform: translateY(-4px); border-color: rgba(201,123,99,0.3); }
.tax-number { font-family: var(--font-serif); font-size: 3rem; font-weight: 700; color: rgba(201,123,99,0.15); position: absolute; top: 16px; right: 24px; }
.tax-card h3 { font-family: var(--font-serif); font-size: 1.5rem; color: var(--coral); margin-bottom: 12px; }
.tax-card p { font-size: 1rem; color: var(--text2); line-height: 1.8; }
.tax-cost { margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--border); color: var(--coral); font-weight: 600; font-size: 0.9rem; }

/* ═══ PARADOX ═══ */
.paradox-label { font-size: 0.7rem; letter-spacing: 4px; text-transform: uppercase; color: var(--coral); margin-bottom: 24px; }

/* ═══ COMPARISON (Suppression Files) ═══ */
.comparison-grid { display: grid; grid-template-columns: 1fr auto 1fr; gap: 24px; align-items: center; margin-bottom: 40px; }
.compare-card {
  background: var(--bg3); border-radius: 16px; padding: 32px; text-align: center;
  border: 1px solid var(--border);
}
.compare-card.paid { border-color: rgba(231,76,60,0.3); }
.compare-card.organic { border-color: rgba(46,204,113,0.3); }
.compare-badge { display: inline-block; font-size: 0.65rem; letter-spacing: 2px; text-transform: uppercase; padding: 4px 12px; border-radius: 12px; margin-bottom: 16px; background: rgba(231,76,60,0.15); color: var(--red); }
.badge-organic { background: rgba(46,204,113,0.15); color: var(--green); }
.compare-card h3 { font-family: var(--font-serif); font-size: 1.1rem; color: var(--text); margin-bottom: 20px; font-style: italic; }
.compare-stat { margin: 20px 0 8px; }
.stat-num { font-family: var(--font-serif); font-size: 4rem; font-weight: 700; }
.paid .stat-num { color: var(--red); }
.organic .stat-num { color: var(--green); }
.stat-unit { display: block; font-size: 0.75rem; color: var(--text3); letter-spacing: 1px; text-transform: uppercase; }
.compare-detail { font-size: 0.8rem; color: var(--text3); }
.compare-vs { font-family: var(--font-serif); font-size: 1.5rem; color: var(--text3); font-style: italic; }
.compare-verdict { text-align: center; font-size: 1.2rem; color: var(--text2); }

/* ═══ AUDIENCE GRID ═══ */
.audience-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.audience-col { padding: 32px; border-radius: 16px; background: var(--bg3); border: 1px solid var(--border); }
.audience-label { font-size: 0.7rem; letter-spacing: 3px; text-transform: uppercase; margin-bottom: 20px; }
.paid-label { color: var(--red); }
.organic-label { color: var(--green); }
.audience-list { list-style: none; }
.audience-list li { padding: 8px 0; border-bottom: 1px solid rgba(255,255,255,0.05); font-size: 0.95rem; color: var(--text2); }
.audience-verdict { margin-top: 20px; font-size: 0.9rem; font-style: italic; line-height: 1.5; }
.audience-verdict.bad { color: var(--red); }
.audience-verdict.good { color: var(--green); }

/* ═══ BUILD CARDS (Part 3) ═══ */
.build-card {
  background: var(--bg3); border: 1px solid var(--border); border-radius: 16px;
  padding: 40px; margin: 24px 0;
  transition: transform 0.3s var(--ease), border-color 0.3s;
}
.build-card:hover { transform: translateY(-4px); border-color: rgba(78,205,196,0.3); }
.build-icon { font-size: 2rem; margin-bottom: 12px; }
.build-card h3 { font-family: var(--font-serif); font-size: 1.5rem; color: var(--teal); margin-bottom: 12px; }
.build-card p { font-size: 1rem; color: var(--text2); line-height: 1.8; }

/* ═══ TRANSITIONS ═══ */
.transition-section { background: var(--bg3); text-align: center; }
.transition-text { font-family: var(--font-serif); font-size: 2rem; color: var(--text); line-height: 1.5; margin-bottom: 32px; }
.next-part-btn {
  display: inline-block; padding: 14px 36px;
  background: transparent; border: 1px solid var(--coral);
  color: var(--coral); font-weight: 600; text-decoration: none;
  border-radius: 8px; font-size: 0.9rem; letter-spacing: 1px;
  transition: all 0.3s var(--ease);
}
.next-part-btn:hover { background: var(--coral); color: var(--bg); transform: translateY(-2px); }

/* ═══ FINAL ═══ */
.final-section { background: radial-gradient(ellipse at 50% 40%, rgba(78,205,196,0.08) 0%, transparent 60%); text-align: center; }
.final-heading { font-family: var(--font-serif); font-size: clamp(2rem, 5vw, 3rem); margin-bottom: 32px; color: var(--teal); }
.final-cta-group { display: flex; gap: 16px; justify-content: center; margin-top: 48px; flex-wrap: wrap; }
.final-cta {
  display: inline-block; padding: 16px 40px;
  background: var(--teal); color: var(--bg); font-weight: 700;
  text-decoration: none; border-radius: 8px; font-size: 1rem;
  transition: all 0.3s var(--ease);
}
.final-cta:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(78,205,196,0.25); }
.final-cta.cta-alt { background: transparent; border: 1px solid var(--teal); color: var(--teal); }
.final-cta.cta-alt:hover { background: var(--teal); color: var(--bg); }

/* ═══ DATA TABLES ═══ */
.data-table-wrap { margin: 32px 0; overflow-x: auto; border-radius: 12px; border: 1px solid var(--border); }
.data-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.data-table caption { text-align: left; padding: 16px 20px 12px; font-family: var(--font-serif); font-size: 1.1rem; color: var(--coral); font-weight: 700; background: var(--bg3); border-bottom: 1px solid var(--border); }
.data-table thead th { text-align: left; padding: 12px 20px; font-size: 0.7rem; letter-spacing: 2px; text-transform: uppercase; color: var(--text3); background: var(--bg4); border-bottom: 1px solid var(--border); font-weight: 600; }
.data-table tbody td { padding: 12px 20px; border-bottom: 1px solid rgba(255,255,255,0.04); color: var(--text2); }
.data-table tbody tr:hover { background: rgba(201,123,99,0.04); }
.data-table tbody tr:last-child td { border-bottom: none; }
.data-table .stat-red { color: var(--red); font-weight: 600; }

/* ═══ CITATIONS ═══ */
.citations-list {
  list-style: none; counter-reset: cite; padding-left: 0;
  font-size: 0.85rem; line-height: 2.2; color: var(--text2);
}
.citations-list li {
  counter-increment: cite; padding-left: 32px; position: relative;
  border-bottom: 1px solid rgba(255,255,255,0.04); padding-bottom: 8px; margin-bottom: 8px;
}
.citations-list li::before {
  content: counter(cite); position: absolute; left: 0; top: 0;
  font-family: var(--font-serif); font-weight: 700; font-size: 0.75rem;
  color: var(--coral); opacity: 0.6; width: 24px; text-align: right;
}
.citations-list li:last-child { border-bottom: none; }

/* ═══ FOOTER ═══ */
.essay-footer { text-align: center; padding: 48px; border-top: 1px solid var(--border); }
.essay-footer p { font-size: 0.8rem; color: var(--text3); }
.footer-sub { margin-top: 4px; font-style: italic; }

/* ═══ FADE IN ═══ */
.fade-in { opacity: 0; transform: translateY(40px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ═══ RESPONSIVE ═══ */
@media (max-width: 768px) {
  .essay-section { padding: 80px 20px; min-height: auto; }
  .essay-nav { padding: 0 16px; }
  .nav-links { display: none; }
  .menu-toggle { display: flex; }
  .comparison-grid { grid-template-columns: 1fr; }
  .compare-vs { display: none; }
  .audience-grid { grid-template-columns: 1fr; }
  .hero-section { min-height: 90vh; }
  .tax-card { padding: 28px 20px; }
  .build-card { padding: 28px 20px; }
  .counter-num { font-size: clamp(4rem, 10vw, 8rem); }
}