/* ═══════════════════════════════════════════════════════
   isyourfirmaiinvisible.com — shared design system
   ═══════════════════════════════════════════════════════ */

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

:root {
  --void:        #050505;
  --void-deep:   #0A0A0A;
  --void-lift:   #111111;
  --grid:        #1A1A1A;
  --grid-bright: #262626;
  --bone:        #F2F2F2;
  --bone-soft:   #C8C8C8;
  --bone-dim:    #6E6E6E;
  --bone-faint:  #3D3D3D;
  --cyan:        #00F0FF;
  --cyan-soft:   rgba(0,240,255,0.10);
  --cyan-mid:    rgba(0,240,255,0.30);
  --cyan-glow:   rgba(0,240,255,0.55);
  --warn:        #FF3B3B;
  --warn-soft:   rgba(255,59,59,0.10);
  --warn-mid:    rgba(255,59,59,0.35);
  --safe:        #00FF88;
  --amber:       #FFB300;
}

html { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; scroll-behavior: smooth; background: var(--void); }

body {
  background: var(--void);
  color: var(--bone);
  font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.55;
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1000;
  background: repeating-linear-gradient(0deg, rgba(255,255,255,0.02) 0px, rgba(255,255,255,0.02) 1px, transparent 1px, transparent 3px);
  mix-blend-mode: overlay;
}
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 999;
  background: radial-gradient(ellipse at center, transparent 40%, rgba(0,0,0,0.55) 100%);
}

a { color: var(--cyan); text-decoration: none; transition: opacity 0.15s ease; }
a:hover { opacity: 0.75; }

/* ───── Type system ───── */
.display { font-family: 'Anton', 'Space Grotesk', sans-serif; font-weight: 400; letter-spacing: -0.5px; line-height: 0.95; text-transform: uppercase; }
.mono    { font-family: 'JetBrains Mono', 'Courier New', monospace; }
.eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--cyan);
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.eyebrow .b { color: var(--bone-dim); }

/* ───── NAV ───── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: 64px;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(5,5,5,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--grid);
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--bone);
}
.logo-mark {
  width: 32px;
  height: 32px;
  border: 1.5px solid var(--cyan);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--cyan);
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  font-weight: 700;
}
.logo-mark::after { content: '|'; animation: blink 1.05s steps(2) infinite; margin-left: 1px; }
.logo-word {
  font-family: 'Anton', sans-serif;
  font-size: 16px;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.logo-word .q { color: var(--cyan); }
.nav-right { display: flex; align-items: center; gap: 24px; }
.nav-link {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--bone-soft);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: color 0.15s ease;
  position: relative;
}
.nav-link:hover { color: var(--cyan); opacity: 1; }
.nav-link.active { color: var(--cyan); }
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -22px; left: 0; right: 0;
  height: 2px;
  background: var(--cyan);
}
.nav-pill {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--bone-dim);
  padding: 6px 12px;
  border: 1px solid var(--grid-bright);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.nav-pill b { color: var(--cyan); font-weight: 500; }
.nav-cta {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  background: var(--cyan);
  color: var(--void);
  padding: 8px 14px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  font-weight: 700;
  transition: all 0.2s ease;
}
.nav-cta:hover { background: var(--bone); opacity: 1; }

@keyframes blink { 0%, 49% { opacity: 1; } 50%, 100% { opacity: 0; } }

/* ───── HERO (sub-page version) ───── */
.page-hero {
  padding: 140px 32px 60px;
  max-width: 1100px;
  margin: 0 auto;
}
.page-hero .eyebrow { margin-bottom: 28px; }
.page-hero h1 {
  font-family: 'Anton', sans-serif;
  font-weight: 400;
  font-size: clamp(48px, 8vw, 104px);
  line-height: 0.94;
  letter-spacing: -1px;
  text-transform: uppercase;
  margin-bottom: 24px;
  color: var(--bone);
}
.page-hero h1 .accent { color: var(--cyan); }
.page-hero h1 .warn { color: var(--warn); }
.page-hero h1 .amber { color: var(--amber); }
.page-hero p.lede {
  font-size: 20px;
  color: var(--bone-soft);
  max-width: 740px;
  line-height: 1.5;
}
.page-hero p.lede em { font-style: normal; color: var(--cyan); border-bottom: 1px dashed var(--cyan-mid); }

/* breadcrumb */
.crumbs {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--bone-dim);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 24px;
}
.crumbs a { color: var(--bone-dim); }
.crumbs a:hover { color: var(--cyan); opacity: 1; }
.crumbs .sep { color: var(--bone-faint); margin: 0 8px; }

/* ───── SECTION SHELL ───── */
section.block {
  padding: 80px 32px;
  max-width: 1100px;
  margin: 0 auto;
}
section.block.flush { max-width: 100%; padding-left: 0; padding-right: 0; }
section.block .inner { max-width: 1100px; margin: 0 auto; padding: 0 32px; }

.section-eyebrow { margin-bottom: 24px; }
.section-h2 {
  font-family: 'Anton', sans-serif;
  font-size: clamp(36px, 5.5vw, 64px);
  letter-spacing: -0.5px;
  line-height: 0.98;
  text-transform: uppercase;
  margin-bottom: 24px;
  color: var(--bone);
}
.section-h2 .accent { color: var(--cyan); }
.section-h2 .warn { color: var(--warn); }
.section-h2 .amber { color: var(--amber); }
.section-intro {
  font-size: 18px;
  color: var(--bone-soft);
  max-width: 760px;
  margin-bottom: 48px;
  line-height: 1.55;
}

.prose { max-width: 780px; }
.prose p {
  font-size: 17px;
  color: var(--bone-soft);
  line-height: 1.65;
  margin-bottom: 22px;
}
.prose p strong { color: var(--bone); font-weight: 600; }
.prose p em { font-style: normal; color: var(--cyan); }
.prose h2 {
  font-family: 'Anton', sans-serif;
  font-size: 36px;
  text-transform: uppercase;
  letter-spacing: -0.4px;
  line-height: 1.05;
  color: var(--bone);
  margin-top: 56px;
  margin-bottom: 18px;
}
.prose h2:first-child { margin-top: 0; }
.prose h2 .accent { color: var(--cyan); }
.prose h3 {
  font-family: 'Anton', sans-serif;
  font-size: 24px;
  text-transform: uppercase;
  letter-spacing: -0.2px;
  line-height: 1.1;
  color: var(--bone);
  margin-top: 36px;
  margin-bottom: 14px;
}
.prose ul, .prose ol {
  list-style: none;
  margin-bottom: 22px;
}
.prose ul li, .prose ol li {
  font-size: 17px;
  color: var(--bone-soft);
  padding: 10px 0;
  border-bottom: 1px solid var(--grid);
  display: flex;
  gap: 14px;
  line-height: 1.55;
}
.prose ul li::before { content: '▸'; color: var(--cyan); font-family: 'JetBrains Mono', monospace; flex-shrink: 0; }
.prose ol { counter-reset: olcount; }
.prose ol li { counter-increment: olcount; }
.prose ol li::before {
  content: counter(olcount, decimal-leading-zero) " //";
  color: var(--cyan);
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  flex-shrink: 0;
  letter-spacing: 0.1em;
}
.prose blockquote {
  border-left: 2px solid var(--cyan);
  padding: 8px 0 8px 20px;
  margin: 28px 0;
  font-size: 19px;
  color: var(--bone);
  line-height: 1.5;
  font-style: italic;
}

/* callout */
.callout {
  border: 1px solid var(--grid-bright);
  background: var(--void-deep);
  padding: 24px 28px;
  margin: 28px 0;
  position: relative;
}
.callout-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cyan);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.callout p { font-size: 16px; color: var(--bone-soft); line-height: 1.55; margin-bottom: 0; }

/* ───── COMPARISON TABLE ───── */
.comp-table {
  width: 100%;
  border: 1px solid var(--grid-bright);
  border-collapse: collapse;
  margin: 32px 0;
  background: var(--void-deep);
}
.comp-table th, .comp-table td {
  padding: 16px 18px;
  text-align: left;
  border-bottom: 1px solid var(--grid);
  border-right: 1px solid var(--grid);
  font-size: 14.5px;
}
.comp-table th:last-child, .comp-table td:last-child { border-right: 0; }
.comp-table thead th {
  font-family: 'Anton', sans-serif;
  font-size: 16px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--bone);
  background: var(--grid);
  border-bottom: 1px solid var(--grid-bright);
}
.comp-table thead th.seo { color: var(--amber); }
.comp-table thead th.aeo { color: var(--cyan); }
.comp-table td.dim { color: var(--bone-dim); font-family: 'JetBrains Mono', monospace; font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; }
.comp-table tr:last-child td { border-bottom: 0; }

/* ───── NUMBERED FACTORS / STEPS ───── */
.factor {
  border-top: 1px solid var(--grid-bright);
  padding: 28px 0;
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 24px;
}
.factor:last-child { border-bottom: 1px solid var(--grid-bright); }
.factor .num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  color: var(--cyan);
  letter-spacing: 0.16em;
}
.factor h3 {
  font-family: 'Anton', sans-serif;
  font-size: 26px;
  text-transform: uppercase;
  letter-spacing: -0.3px;
  color: var(--bone);
  margin-bottom: 10px;
  line-height: 1.05;
}
.factor p { color: var(--bone-soft); font-size: 16px; line-height: 1.65; margin-bottom: 10px; }
.factor p:last-child { margin-bottom: 0; }

/* ───── PILL CARDS ───── */
.pill-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
  margin: 28px 0;
}
.pill-card {
  border: 1px solid var(--grid-bright);
  background: var(--void-deep);
  padding: 22px 20px;
  display: block;
  text-decoration: none;
  color: inherit;
  transition: all 0.2s ease;
}
.pill-card:hover { border-color: var(--cyan); background: var(--void-lift); opacity: 1; }
.pill-card .num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--cyan);
  letter-spacing: 0.18em;
  margin-bottom: 10px;
}
.pill-card h4 {
  font-family: 'Anton', sans-serif;
  font-size: 22px;
  text-transform: uppercase;
  letter-spacing: -0.3px;
  margin-bottom: 8px;
  color: var(--bone);
}
.pill-card p { font-size: 13.5px; color: var(--bone-soft); line-height: 1.55; }

/* ───── ENGINE / FEATURE CARDS ───── */
.engine-card {
  border: 1px solid var(--grid-bright);
  background: var(--void-deep);
  padding: 28px 22px;
  transition: all 0.2s ease;
  display: block;
  text-decoration: none;
  color: inherit;
}
.engine-card:hover { border-color: var(--cyan); background: var(--void-lift); opacity: 1; }
.engine-card .pulse {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--warn);
  box-shadow: 0 0 10px var(--warn-mid);
  margin-bottom: 18px;
}
.engine-card h4 { font-family: 'Anton', sans-serif; font-size: 22px; text-transform: uppercase; letter-spacing: -0.3px; margin-bottom: 8px; color: var(--bone); }
.engine-card .vol { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--cyan); letter-spacing: 0.1em; margin-bottom: 12px; }
.engine-card p { font-size: 13.5px; color: var(--bone-soft); line-height: 1.55; }

/* ───── KEY-FACT STRIP ───── */
.fact-strip {
  background: var(--void-deep);
  border-top: 1px solid var(--grid-bright);
  border-bottom: 1px solid var(--grid-bright);
  padding: 64px 32px;
  margin: 0;
}
.fact-strip .inner { max-width: 1100px; margin: 0 auto; display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; }
.fact-strip .cell {
  padding: 0 28px;
  border-right: 1px solid var(--grid-bright);
}
.fact-strip .cell:first-child { padding-left: 0; }
.fact-strip .cell:last-child { border-right: 0; padding-right: 0; }
.fact-strip .big {
  font-family: 'Anton', sans-serif;
  font-size: 60px;
  line-height: 0.96;
  color: var(--warn);
  letter-spacing: -1.5px;
  margin-bottom: 8px;
}
.fact-strip .big .sm { font-size: 28px; vertical-align: super; color: var(--bone-soft); }
.fact-strip .lbl { font-family: 'JetBrains Mono', monospace; font-size: 10.5px; color: var(--bone-dim); letter-spacing: 0.16em; text-transform: uppercase; margin-bottom: 6px; }
.fact-strip p { font-size: 13.5px; color: var(--bone-soft); max-width: 280px; }

/* ───── DIAGNOSTIC CTA BLOCK ───── */
.diag-cta {
  background: linear-gradient(180deg, var(--void) 0%, var(--void-deep) 100%);
  border-top: 1px solid var(--grid-bright);
  border-bottom: 1px solid var(--grid-bright);
  padding: 96px 32px;
  text-align: center;
}
.diag-cta .inner { max-width: 760px; margin: 0 auto; }
.diag-cta h2 {
  font-family: 'Anton', sans-serif;
  font-size: clamp(36px, 5.5vw, 64px);
  text-transform: uppercase;
  line-height: 0.98;
  letter-spacing: -0.5px;
  margin-bottom: 18px;
}
.diag-cta h2 .warn { color: var(--warn); }
.diag-cta h2 .accent { color: var(--cyan); }
.diag-cta p { font-size: 17px; color: var(--bone-soft); margin-bottom: 28px; }
.cta-primary {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: var(--cyan);
  color: var(--void);
  padding: 16px 26px;
  font-family: 'Anton', sans-serif;
  font-size: 17px;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  text-decoration: none;
  transition: all 0.2s ease;
}
.cta-primary:hover { background: var(--bone); letter-spacing: 2.2px; opacity: 1; }
.cta-secondary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--bone);
  padding: 16px 22px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid var(--grid-bright);
  transition: all 0.2s ease;
  margin-left: 8px;
}
.cta-secondary:hover { border-color: var(--cyan); color: var(--cyan); opacity: 1; }

/* ───── RELATED / CROSS-LINK GRID ───── */
.related {
  padding: 80px 32px;
  max-width: 1100px;
  margin: 0 auto;
}
.related h2 {
  font-family: 'Anton', sans-serif;
  font-size: 30px;
  text-transform: uppercase;
  letter-spacing: -0.3px;
  margin-bottom: 24px;
  color: var(--bone);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 14px;
}

/* ───── FAQ ───── */
.faq-list { border-top: 1px solid var(--grid-bright); margin-top: 24px; }
.faq-item { border-bottom: 1px solid var(--grid-bright); padding: 24px 0; cursor: pointer; }
.faq-q {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: 'Anton', sans-serif;
  font-size: 20px;
  text-transform: uppercase;
  letter-spacing: -0.2px;
  color: var(--bone);
  line-height: 1.1;
}
.faq-q .toggle { font-family: 'JetBrains Mono', monospace; font-size: 15px; color: var(--cyan); transition: transform 0.25s ease; margin-left: 16px; flex-shrink: 0; }
.faq-item.open .faq-q .toggle { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; }
.faq-item.open .faq-a { max-height: 400px; }
.faq-a p { margin-top: 14px; color: var(--bone-soft); font-size: 15.5px; line-height: 1.65; max-width: 780px; }

/* ───── FOOTER ───── */
footer {
  border-top: 1px solid var(--grid-bright);
  background: var(--void-deep);
  padding: 56px 32px 32px;
  margin-top: 80px;
}
.footer-inner { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer-brand .logo { margin-bottom: 18px; }
.footer-brand p { font-size: 13px; color: var(--bone-dim); line-height: 1.55; max-width: 280px; }
.footer-col h5 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12.5px;
  color: var(--bone-soft);
  text-decoration: none;
  padding: 6px 0;
  letter-spacing: 0.04em;
  transition: color 0.15s ease;
}
.footer-col a:hover { color: var(--cyan); opacity: 1; }
.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 24px;
  border-top: 1px solid var(--grid);
  display: flex;
  justify-content: space-between;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--bone-dim);
  letter-spacing: 0.06em;
}

/* ───── RESPONSIVE ───── */
@media (max-width: 900px) {
  nav { padding: 0 20px; }
  .nav-right { gap: 12px; }
  .nav-pill, .nav-link.hide-mobile { display: none; }
  .page-hero { padding: 110px 20px 40px; }
  section.block { padding: 56px 20px; }
  .fact-strip { padding: 48px 20px; }
  .fact-strip .inner { grid-template-columns: 1fr; gap: 16px; }
  .fact-strip .cell { border-right: 0; border-bottom: 1px solid var(--grid-bright); padding: 16px 0; }
  .fact-strip .cell:last-child { border-bottom: 0; }
  .fact-strip .big { font-size: 48px; }
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 8px; align-items: flex-start; }
  .factor { grid-template-columns: 1fr; gap: 8px; }
  .diag-cta { padding: 64px 20px; }
  .related { padding: 56px 20px; }
}

/* ───── REVEAL ───── */
.reveal { opacity: 0; transform: translateY(20px); transition: all 0.7s cubic-bezier(0.16, 1, 0.3, 1); }
.reveal.in { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } }