/* AI Visibility Checker — design system: Vertex Dynamic Analytics (dark) */

@font-face{
  font-family:"Inter";
  src:url("/assets/fonts/inter-cyrillic-wght-normal.woff2") format("woff2-variations"),
      url("/assets/fonts/inter-cyrillic-wght-normal.woff2") format("woff2");
  font-weight:100 900; font-style:normal; font-display:swap;
  unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116;
}
@font-face{
  font-family:"Inter";
  src:url("/assets/fonts/inter-latin-wght-normal.woff2") format("woff2-variations"),
      url("/assets/fonts/inter-latin-wght-normal.woff2") format("woff2");
  font-weight:100 900; font-style:normal; font-display:swap;
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+2000-206F;
}
@font-face{
  font-family:"Geist";
  src:url("/assets/fonts/geist-cyrillic-wght-normal.woff2") format("woff2-variations"),
      url("/assets/fonts/geist-cyrillic-wght-normal.woff2") format("woff2");
  font-weight:100 900; font-style:normal; font-display:swap;
  unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116;
}
@font-face{
  font-family:"Geist";
  src:url("/assets/fonts/geist-latin-wght-normal.woff2") format("woff2-variations"),
      url("/assets/fonts/geist-latin-wght-normal.woff2") format("woff2");
  font-weight:100 900; font-style:normal; font-display:swap;
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+2000-206F;
}
@font-face{
  font-family:"JetBrains Mono";
  src:url("/assets/fonts/jetbrains-mono-latin-wght-normal.woff2") format("woff2-variations"),
      url("/assets/fonts/jetbrains-mono-latin-wght-normal.woff2") format("woff2");
  font-weight:100 800; font-style:normal; font-display:swap;
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+2000-206F;
}

:root{
  color-scheme: dark;
  --bg:#0E0E10;
  --surface:#18181B;
  --surface-2:#202024;
  --text:#FFFFFF;
  --text-2:#A1A1AA;
  --text-3:#8B8B94;
  --border:#27272A;
  --border-2:#3A3A42;
  --primary:#5C3EE8;
  --primary-ink:#A995FF;   /* light purple for links/text on dark bg, AA-safe */
  --accent:#4A32B8;
  --grad:linear-gradient(135deg,#5C3EE8,#4A32B8);
  --grad-text:linear-gradient(100deg,#A995FF,#7C5CFF);
  --ok:#34D399; --ok-ink:#6EE7B7;
  --warn:#FBBF24; --warn-ink:#FCD34D;
  --err:#FB7185; --err-ink:#FDA4AF;
  --r-sm:6px; --r:8px; --pill:9999px;
  --gap:16px; --pad-card:24px; --sect:80px; --maxw:1200px;
  --shadow:0 2px 8px rgba(0,0,0,.45),0 18px 44px -22px rgba(0,0,0,.7);
  --ease:cubic-bezier(.16,1,.3,1);
  --dur:180ms;
  --font-display:"Inter",system-ui,sans-serif;
  --font-sans:"Geist","Inter",system-ui,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,monospace;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){ html{ scroll-behavior:auto; } }

body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.6;
  overflow-x:hidden;
}

img{ max-width:100%; display:block; }

h1,h2,h3,h4{
  font-family:var(--font-display);
  color:var(--text);
  line-height:1.2;
  margin:0 0 .5em;
  font-weight:700;
  letter-spacing:-.01em;
}
h1{ font-size:clamp(2rem,4.4vw,3.2rem); }
h2{ font-size:clamp(1.5rem,2.6vw,2.1rem); }
h3{ font-size:1.2rem; }
p{ margin:0 0 1em; color:var(--text-2); }
a{ color:var(--primary-ink); text-decoration:none; }
a:hover{ text-decoration:underline; }
ul,ol{ color:var(--text-2); }
strong{ color:var(--text); }

:focus-visible{
  outline:2px solid var(--primary-ink);
  outline-offset:2px;
  border-radius:var(--r-sm);
}

.container{
  max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:24px;
}

.eyebrow{
  font-family:var(--font-mono);
  font-size:.75rem;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--primary-ink);
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-bottom:12px;
}
.eyebrow::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 8px var(--primary);
}

/* Header */
.site-header{
  position:sticky; top:0; z-index:50;
  height:72px;
  display:flex; align-items:center;
  background:rgba(14,14,16,.82);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
}
.site-header .container{
  display:flex; align-items:center; justify-content:space-between;
  gap:24px;
}
.brand{ display:flex; align-items:center; gap:10px; color:var(--text); font-weight:700; font-family:var(--font-display); font-size:1.05rem; }
.brand svg{ flex:none; }
.nav-desktop{ display:flex; align-items:center; gap:28px; }
.nav-desktop a{ color:var(--text-2); font-size:.94rem; }
.nav-desktop a:hover{ color:var(--text); text-decoration:none; }
.header-actions{ display:flex; align-items:center; gap:12px; }

.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  font-family:var(--font-sans); font-weight:600; font-size:.94rem;
  padding:11px 22px;
  border-radius:var(--pill);
  border:1px solid transparent;
  cursor:pointer;
  transition:transform var(--dur) var(--ease), background var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
  white-space:nowrap;
}
.btn-primary{ background:var(--grad); color:#fff; }
.btn-primary:hover{ transform:translateY(-1px); text-decoration:none; }
.btn-ghost{ background:transparent; color:var(--text); border-color:var(--border-2); }
.btn-ghost:hover{ border-color:var(--primary-ink); color:var(--text); text-decoration:none; }
.btn-sm{ padding:9px 16px; font-size:.85rem; }
.btn-block{ width:100%; }

.hamburger{
  display:none;
  background:transparent; border:1px solid var(--border-2); border-radius:var(--r-sm);
  width:40px; height:40px; align-items:center; justify-content:center;
  color:var(--text); cursor:pointer;
}
.mobile-menu{
  display:none;
  border-bottom:1px solid var(--border);
  background:var(--bg);
}
.mobile-menu.open{ display:block; }
.mobile-menu .container{ display:flex; flex-direction:column; gap:4px; padding-block:12px; }
.mobile-menu a{ color:var(--text-2); padding:10px 0; border-bottom:1px solid var(--border); }
.mobile-menu a:last-child{ border-bottom:none; }

@media (max-width:860px){
  .nav-desktop{ display:none; }
  .hamburger{ display:flex; }
  .header-actions .btn-ghost{ display:none; }
}

@media (max-width:480px){
  .container{ padding-inline:14px; }
  .brand{ font-size:.86rem; gap:6px; }
  .header-actions{ gap:6px; }
  .header-actions .btn-primary.btn-sm{ padding:8px 12px; font-size:.78rem; }
}

/* Hero */
.hero{
  padding-block:56px var(--sect);
  border-bottom:1px solid var(--border);
  position:relative;
}
.hero .container{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:48px;
  align-items:center;
}
.hero h1{ margin-bottom:16px; }
.hero-sub{ font-size:1.08rem; max-width:46ch; margin-bottom:28px; }
.hero-cta-row{ display:flex; gap:14px; flex-wrap:wrap; }
.hero-media{
  border-radius:16px;
  overflow:hidden;
  border:1px solid var(--border);
  background:var(--surface);
}
.hero-media img{ width:100%; height:auto; }

@media (max-width:900px){
  .hero .container{ grid-template-columns:1fr; }
  .hero-media{ order:-1; }
}

/* Sections */
.section{ padding-block:var(--sect); border-bottom:1px solid var(--border); }
.section-head{ max-width:680px; margin-bottom:44px; }
.section-head p{ font-size:1.02rem; }

/* Cards */
.card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--r);
  padding:var(--pad-card);
}

/* Steps grid (how it works) */
.steps-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:var(--gap);
}
.step-card{ position:relative; }
.step-num{
  font-family:var(--font-mono);
  color:var(--primary-ink);
  font-size:.8rem;
  margin-bottom:14px;
  display:block;
}
@media (max-width:940px){ .steps-grid{ grid-template-columns:1fr 1fr; } }
@media (max-width:600px){ .steps-grid{ grid-template-columns:1fr; } }

/* Bento / advantages */
.bento{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:var(--gap);
}
.bento .card:first-child{ grid-column:span 2; }
@media (max-width:900px){ .bento{ grid-template-columns:1fr 1fr; } .bento .card:first-child{ grid-column:span 2; } }
@media (max-width:600px){ .bento{ grid-template-columns:1fr; } .bento .card:first-child{ grid-column:span 1; } }

.icon-badge{
  width:44px; height:44px;
  border-radius:var(--r-sm);
  background:rgba(92,62,232,.14);
  display:flex; align-items:center; justify-content:center;
  color:var(--primary-ink);
  margin-bottom:16px;
}

/* Audience */
.audience-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:var(--gap);
}
@media (max-width:900px){ .audience-grid{ grid-template-columns:1fr; } }

/* Checker widget */
.checker{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:16px;
  padding:32px;
}
.checker-form{
  display:flex;
  gap:12px;
  align-items:flex-end;
  flex-wrap:wrap;
}
.field{ flex:1 1 280px; display:flex; flex-direction:column; gap:8px; }
.field label{
  font-family:var(--font-mono);
  font-size:.78rem;
  color:var(--text-2);
  text-transform:uppercase;
  letter-spacing:.04em;
}
.field input{
  background:var(--surface-2);
  border:1px solid var(--border-2);
  border-radius:var(--r);
  color:var(--text);
  padding:13px 16px;
  font-size:.98rem;
  font-family:var(--font-sans);
}
.field input:focus-visible{ outline:2px solid var(--primary-ink); outline-offset:1px; }
.field-error{
  color:var(--err-ink);
  font-size:.85rem;
  min-height:1.2em;
  font-family:var(--font-mono);
}

.checker-results{ margin-top:28px; }
.checker-results:empty{ margin-top:0; }
.result-summary{
  display:flex; align-items:center; gap:20px; flex-wrap:wrap;
  padding:20px;
  border:1px solid var(--border-2);
  border-radius:var(--r);
  background:var(--surface-2);
  margin-bottom:16px;
}
.score-ring{
  font-family:var(--font-mono);
  font-size:1.6rem;
  font-weight:700;
  color:var(--text);
  min-width:88px;
  height:88px;
  border-radius:50%;
  border:3px solid var(--primary);
  display:flex; align-items:center; justify-content:center;
  flex:none;
}
.result-summary-text h3{ margin-bottom:4px; }
.result-summary-text p{ margin:0; font-size:.92rem; }

.provider-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:12px;
}
@media (max-width:800px){ .provider-grid{ grid-template-columns:1fr 1fr; } }
@media (max-width:480px){ .provider-grid{ grid-template-columns:1fr; } }

.provider-card{
  border:1px solid var(--border-2);
  border-radius:var(--r);
  padding:16px;
  background:var(--surface-2);
}
.provider-name{
  font-family:var(--font-mono);
  font-size:.85rem;
  color:var(--text);
  margin-bottom:10px;
  display:block;
}
.status-badge{
  display:inline-flex; align-items:center; gap:6px;
  font-size:.8rem; font-weight:600;
  padding:4px 10px;
  border-radius:var(--pill);
}
.status-mentioned{ background:rgba(52,211,153,.14); color:var(--ok-ink); }
.status-partial{ background:rgba(251,191,36,.14); color:var(--warn-ink); }
.status-missing{ background:rgba(251,113,133,.14); color:var(--err-ink); }

.checker-cta{
  margin-top:20px;
  display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap;
  padding-top:20px;
  border-top:1px solid var(--border);
}

/* Pricing */
.pricing-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:var(--gap);
}
@media (max-width:900px){ .pricing-grid{ grid-template-columns:1fr; } }
.price-card{ display:flex; flex-direction:column; }
.price-card.featured{ border-color:var(--primary); box-shadow:0 0 0 1px var(--primary); }
.price-amount{ font-family:var(--font-display); font-size:2rem; font-weight:700; color:var(--text); margin:12px 0 4px; }
.price-amount span{ font-size:.95rem; color:var(--text-2); font-weight:400; }
.price-list{ list-style:none; padding:0; margin:20px 0 24px; display:flex; flex-direction:column; gap:10px; flex:1; }
.price-list li{ display:flex; gap:10px; align-items:flex-start; font-size:.92rem; color:var(--text-2); }
.price-list svg{ flex:none; margin-top:2px; color:var(--ok-ink); }

/* FAQ */
.faq-list{ display:flex; flex-direction:column; gap:1px; background:var(--border); border:1px solid var(--border); border-radius:var(--r); overflow:hidden; }
.faq-item{ background:var(--surface); }
.faq-item summary{
  cursor:pointer;
  padding:20px 24px;
  font-family:var(--font-display);
  font-weight:600;
  color:var(--text);
  list-style:none;
  display:flex; align-items:center; justify-content:space-between; gap:16px;
}
.faq-item summary::-webkit-details-marker{ display:none; }
.faq-item summary::after{
  content:"+";
  font-size:1.4rem;
  color:var(--primary-ink);
  flex:none;
}
.faq-item[open] summary::after{ content:"-"; }
.faq-item p{ padding:0 24px 20px; margin:0; }

/* Lead form (demo request) */
.lead-form{ display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.lead-form .field-full{ grid-column:1 / -1; }
@media (max-width:640px){ .lead-form{ grid-template-columns:1fr; } }

/* Footer */
.site-footer{ padding-block:48px; }
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr;
  gap:32px;
  margin-bottom:32px;
}
@media (max-width:700px){ .footer-grid{ grid-template-columns:1fr; } }
.footer-col h4{ font-size:.85rem; text-transform:uppercase; letter-spacing:.04em; color:var(--text-2); margin-bottom:14px; font-family:var(--font-mono); }
.footer-col ul{ list-style:none; padding:0; margin:0; display:flex; flex-direction:column; gap:10px; }
.footer-col a{ color:var(--text-2); font-size:.92rem; }
.footer-col a:hover{ color:var(--text); }
.footer-bottom{
  border-top:1px solid var(--border);
  padding-top:24px;
  display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap;
  font-size:.84rem; color:var(--text-3);
}
.footer-disclaimer{ max-width:70ch; }

/* Breadcrumbs */
.breadcrumbs{ font-size:.85rem; color:var(--text-3); margin-bottom:24px; font-family:var(--font-mono); }
.breadcrumbs a{ color:var(--text-3); }
.breadcrumbs a:hover{ color:var(--primary-ink); }

/* Article / prose pages */
.article-hero{ padding-block:48px 40px; border-bottom:1px solid var(--border); }
.article-hero .container{ max-width:820px; }
.article-meta{ font-family:var(--font-mono); font-size:.82rem; color:var(--text-3); margin-bottom:16px; }
.article-cover{ border-radius:16px; overflow:hidden; border:1px solid var(--border); margin-top:28px; }
.prose{ max-width:760px; margin-inline:auto; padding-block:var(--sect); }
.prose h2{ margin-top:2.2em; }
.prose h3{ margin-top:1.6em; }
.prose ul,.prose ol{ padding-left:1.3em; }
.prose li{ margin-bottom:.5em; }
.callout{
  background:var(--surface);
  border:1px solid var(--border);
  border-left:3px solid var(--primary);
  border-radius:var(--r-sm);
  padding:18px 20px;
  margin:1.6em 0;
}
.callout p:last-child{ margin-bottom:0; }
table.ref-table{ width:100%; border-collapse:collapse; margin:1.6em 0; font-size:.92rem; }
table.ref-table th, table.ref-table td{ border:1px solid var(--border); padding:10px 12px; text-align:left; }
table.ref-table th{ background:var(--surface-2); font-family:var(--font-mono); font-size:.8rem; text-transform:uppercase; letter-spacing:.03em; }
.related-links{ margin-top:56px; padding-top:32px; border-top:1px solid var(--border); }
.related-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:16px; margin-top:20px; }
@media (max-width:640px){ .related-grid{ grid-template-columns:1fr; } }
.related-card{ display:block; }
.related-card:hover{ text-decoration:none; }
.related-card .card{ transition:border-color var(--dur) var(--ease); }
.related-card:hover .card{ border-color:var(--primary-ink); }
.related-card h3{ margin-bottom:6px; }
.related-card p{ margin:0; font-size:.9rem; }

.mistake-list{ display:flex; flex-direction:column; gap:20px; margin:1.6em 0; }
.mistake-item{ display:flex; gap:16px; }
.mistake-num{
  font-family:var(--font-mono);
  color:var(--err-ink);
  font-weight:700;
  flex:none;
  width:32px;
}

/* Reveal (progressive enhancement) */
.reveal-ready .reveal{ opacity:0; transform:translateY(20px); transition:opacity .6s var(--ease),transform .6s var(--ease); transition-delay:var(--d,0ms); }
.reveal-ready .reveal.in{ opacity:1; transform:none; }
@media (prefers-reduced-motion: reduce){ .reveal-ready .reveal{ opacity:1; transform:none; transition:none; } }

.sr-only{
  position:absolute; width:1px; height:1px; padding:0; margin:-1px;
  overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0;
}

.mono{ font-family:var(--font-mono); }