/* Eo landing system — per-page accent via --accent on <body>.
 * Type: Fraunces (display serif) + Inter (UI/body), loaded in base template.
 * Structure: dark hero with accent glow -> light content -> dark closing panel. */

:root {
  --ink: #202128;
  --ink-soft: #5a5b66;
  --paper: #f7f6f2;
  --card: #ffffff;
  --line: #e7e4dd;
  --dark: #101217;
  --dark-2: #16181f;
  --dark-line: rgba(255, 255, 255, 0.09);
  --dark-text: rgba(255, 255, 255, 0.92);
  --dark-text-soft: rgba(255, 255, 255, 0.62);
  --radius: 16px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --display: "Fraunces", Georgia, "Times New Roman", serif;
  --shadow-card: 0 1px 2px rgba(20, 20, 30, 0.04), 0 8px 24px -12px rgba(20, 20, 30, 0.10);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.65;
  font-size: 16.5px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 28px; }

h1, h2 {
  font-family: var(--display);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.015em;
}
h1 { font-size: clamp(2.4rem, 5.2vw, 3.9rem); }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.5rem); margin-bottom: 0.6em; }
h3 { font-size: 1.1rem; font-weight: 650; letter-spacing: -0.01em; line-height: 1.3; }

a { color: color-mix(in srgb, var(--accent) 80%, var(--ink)); }

.eyebrow {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  font: inherit; font-weight: 600; cursor: pointer;
  border-radius: 999px; border: 1.5px solid transparent;
  padding: 0.75em 1.6em;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease, border-color .15s ease, color .15s ease;
  text-decoration: none; display: inline-block; text-align: center;
}
.btn:hover { transform: translateY(-1.5px); }
.btn:active { transform: translateY(0); }
.btn-primary {
  background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 88%, #fff), var(--accent) 65%);
  color: #fff;
  box-shadow: 0 1px 0 rgba(255,255,255,0.25) inset, 0 8px 22px -8px color-mix(in srgb, var(--accent) 70%, transparent);
}
.btn-primary:hover { box-shadow: 0 1px 0 rgba(255,255,255,0.25) inset, 0 12px 30px -8px color-mix(in srgb, var(--accent) 80%, transparent); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-hero-ghost {
  background: rgba(255,255,255,0.06); color: var(--dark-text);
  border-color: rgba(255,255,255,0.22); backdrop-filter: blur(4px);
}
.btn-hero-ghost:hover { border-color: rgba(255,255,255,0.5); background: rgba(255,255,255,0.1); }
.btn-small { padding: 0.55em 1.25em; font-size: 0.92rem; background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 88%, #fff), var(--accent) 65%); color: #fff; }
.btn-large { font-size: 1.08rem; padding: 0.9em 2.2em; }
.btn-block { width: 100%; }
.btn-text { background: none; color: var(--dark-text-soft); padding: 0.5em 0.9em; font-size: 0.95rem; }
.btn-text:hover { color: #fff; transform: none; }

/* ── Top bar (dark, matches hero) ────────────────────────── */
.topbar {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--dark) 82%, transparent);
  backdrop-filter: blur(14px) saturate(1.4);
  border-bottom: 1px solid var(--dark-line);
}
.topbar-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: baseline; text-decoration: none; }
.brand-mark {
  font-family: var(--display);
  font-weight: 700; font-size: 1.7rem; letter-spacing: -0.03em;
  color: #fff;
}
.topnav { display: flex; align-items: center; gap: 8px; }

/* ── Hero (dark with accent glow + grain) ────────────────── */
.hero {
  position: relative;
  background:
    radial-gradient(900px 480px at 12% -12%, color-mix(in srgb, var(--accent) 34%, transparent), transparent 65%),
    radial-gradient(1000px 560px at 95% 108%, color-mix(in srgb, var(--accent) 26%, transparent), transparent 62%),
    linear-gradient(180deg, var(--dark), var(--dark-2));
  color: var(--dark-text);
  padding: 92px 0 104px;
  overflow: hidden;
}
.hero::after { /* film grain */
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0.5;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3CfeColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0.05 0'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
}
.hero-grid {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1.08fr 0.92fr; gap: 64px; align-items: center;
}
.hero h1 { color: #fff; }
.sub { font-size: 1.14rem; color: var(--dark-text-soft); margin: 1.2em 0 1.8em; max-width: 33em; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.chips { list-style: none; display: flex; gap: 8px 20px; flex-wrap: wrap; margin-top: 30px; }
.chips li {
  font-size: 0.88rem; font-weight: 500; color: var(--dark-text-soft);
  display: flex; align-items: center; gap: 8px;
}
.chips li::before {
  content: ""; width: 5px; height: 5px; border-radius: 50%;
  background: color-mix(in srgb, var(--accent) 55%, #fff); flex-shrink: 0;
}

/* ── Demo card (the "product screenshot") ────────────────── */
.demo { perspective: 1200px; }
.demo-card {
  background: rgba(255, 255, 255, 0.055);
  border: 1px solid var(--dark-line);
  border-radius: 20px;
  padding: 18px 18px 16px;
  backdrop-filter: blur(10px);
  box-shadow: 0 40px 90px -30px rgba(0, 0, 0, 0.6), 0 1px 0 rgba(255,255,255,0.08) inset;
  transform: rotateY(-4deg) rotateX(1.5deg);
  display: flex; flex-direction: column; gap: 12px;
}
.demo-head {
  display: flex; align-items: center; gap: 6px;
  padding-bottom: 12px; border-bottom: 1px solid var(--dark-line);
}
.demo-dot { width: 9px; height: 9px; border-radius: 50%; background: rgba(255,255,255,0.16); }
.demo-title {
  margin-left: auto; margin-right: auto; transform: translateX(-16px);
  font-size: 0.82rem; font-weight: 600; color: var(--dark-text-soft); letter-spacing: 0.02em;
}
.demo-msg { display: flex; gap: 10px; }
.demo-msg p { font-size: 0.92rem; line-height: 1.55; }
.demo-user { justify-content: flex-end; }
.demo-user p {
  background: rgba(255, 255, 255, 0.92); color: #1b1c22;
  border-radius: 16px 16px 4px 16px; padding: 10px 15px; max-width: 82%;
}
.demo-eo p {
  background: color-mix(in srgb, var(--accent) 32%, rgba(255,255,255,0.04));
  color: var(--dark-text);
  border: 1px solid color-mix(in srgb, var(--accent) 40%, transparent);
  border-radius: 16px 16px 16px 4px; padding: 11px 15px;
}
.demo-avatar {
  flex-shrink: 0; width: 30px; height: 30px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--display); font-weight: 700; font-size: 0.85rem;
  background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 80%, #fff), var(--accent));
  color: #fff; margin-top: 2px;
  box-shadow: 0 4px 12px -3px color-mix(in srgb, var(--accent) 80%, transparent);
}
.demo-status {
  display: flex; align-items: center; gap: 9px;
  margin-top: 2px; padding: 9px 14px;
  border: 1px solid var(--dark-line); border-radius: 12px;
  background: rgba(0, 0, 0, 0.22);
  font-size: 0.82rem; font-weight: 500; color: var(--dark-text-soft);
  letter-spacing: 0.01em;
}
.pulse {
  width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0;
  background: #4ade80;
  box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.6);
  animation: pulse 2.4s ease-out infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.55); }
  70% { box-shadow: 0 0 0 9px rgba(74, 222, 128, 0); }
  100% { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0); }
}

/* ── Sections (light) ────────────────────────────────────── */
section { scroll-margin-top: 76px; }
.how { padding: 96px 0 20px; }
.steps { list-style: none; display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 34px; }
.steps li {
  position: relative;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 26px 26px; box-shadow: var(--shadow-card);
}
.step-num {
  font-family: var(--display); font-weight: 600; font-size: 2.6rem; line-height: 1;
  display: block; margin-bottom: 16px;
  background: linear-gradient(180deg, var(--accent), color-mix(in srgb, var(--accent) 55%, var(--paper)));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.steps h3 { margin-bottom: 8px; }
.steps p { color: var(--ink-soft); font-size: 0.96rem; }

/* ── Probes (tracked capability cards) ───────────────────── */
.probes { padding: 76px 0 88px; }
.probe-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 34px; }
details.probe, details.faq-item {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px 24px; box-shadow: var(--shadow-card);
  transition: border-color .18s ease, box-shadow .18s ease, transform .18s ease;
}
details.probe:hover { transform: translateY(-2px); border-color: color-mix(in srgb, var(--accent) 35%, var(--line)); }
details.probe[open], details.faq-item[open] {
  border-color: color-mix(in srgb, var(--accent) 50%, var(--line));
  box-shadow: 0 12px 32px -14px color-mix(in srgb, var(--accent) 35%, rgba(20,20,30,0.2));
}
details summary {
  cursor: pointer; font-weight: 600; font-size: 1.04rem; letter-spacing: -0.01em; list-style: none;
  display: flex; justify-content: space-between; align-items: center; gap: 14px;
}
details summary::-webkit-details-marker { display: none; }
details summary::after {
  content: "+";
  width: 26px; height: 26px; flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 50%; font-size: 1.05rem; font-weight: 500;
  color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, #fff);
  border: 1px solid color-mix(in srgb, var(--accent) 25%, var(--line));
  transition: transform .18s ease;
}
details[open] summary::after { transform: rotate(45deg); }
details p { margin-top: 12px; color: var(--ink-soft); font-size: 0.97rem; }

/* ── Pricing ─────────────────────────────────────────────── */
.pricing { padding: 20px 0 88px; }
.section-note { color: var(--ink-soft); margin: -0.2em 0 0; }
.tier-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; align-items: stretch; margin-top: 38px; }
.tier-grid-single { grid-template-columns: minmax(0, 440px); justify-content: center; }
.tier {
  position: relative;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 26px 26px; display: flex; flex-direction: column; gap: 10px;
  box-shadow: var(--shadow-card);
}
.tier-featured {
  border-color: color-mix(in srgb, var(--accent) 60%, var(--line));
  box-shadow: 0 22px 48px -20px color-mix(in srgb, var(--accent) 50%, transparent);
}
.tier-badge {
  position: absolute; top: -12px; left: 26px;
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase;
  background: var(--accent); color: #fff; border-radius: 999px; padding: 3px 12px;
}
.tier .price {
  font-family: var(--display); font-size: 1.45rem; font-weight: 600;
  color: var(--accent); line-height: 1.25;
}
.tier p:not(.price) { color: var(--ink-soft); font-size: 0.95rem; flex-grow: 1; }

/* ── FAQ ─────────────────────────────────────────────────── */
.faq { padding: 20px 0 96px; }
.faq .wrap { max-width: 800px; }
details.faq-item { margin-top: 14px; }
.faq h2 { margin-bottom: 0.4em; }

/* ── Final CTA (dark panel echoing the hero) ─────────────── */
.final-cta { padding: 0 0 96px; }
.final-panel {
  position: relative; overflow: hidden;
  background:
    radial-gradient(720px 380px at 80% -30%, color-mix(in srgb, var(--accent) 38%, transparent), transparent 68%),
    radial-gradient(600px 320px at 8% 130%, color-mix(in srgb, var(--accent) 24%, transparent), transparent 62%),
    linear-gradient(180deg, var(--dark), var(--dark-2));
  border-radius: 26px;
  padding: 72px 40px;
  text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: 14px;
}
.final-panel h2 { color: #fff; margin: 0; }
.final-sub { color: var(--dark-text-soft); font-size: 0.95rem; margin-bottom: 12px; }

/* ── Modal ───────────────────────────────────────────────── */
.modal { position: fixed; inset: 0; z-index: 50; display: grid; place-items: center; }
.modal[hidden] { display: none; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(14, 15, 20, 0.6); backdrop-filter: blur(3px); }
.modal-card {
  position: relative; background: var(--card); border-radius: 20px;
  width: min(450px, calc(100vw - 40px)); padding: 36px 32px;
  box-shadow: 0 40px 100px -20px rgba(0, 0, 0, 0.45);
}
.modal-card h3 { font-family: var(--display); font-size: 1.45rem; font-weight: 600; letter-spacing: -0.01em; }
.modal-x {
  position: absolute; top: 14px; right: 18px; border: none; background: none;
  font-size: 1.6rem; color: var(--ink-soft); cursor: pointer; line-height: 1;
}
.modal-sub { color: var(--ink-soft); margin: 10px 0 20px; font-size: 0.97rem; }
.modal label { display: block; font-weight: 600; font-size: 0.9rem; margin: 15px 0 6px; }
.modal .optional { font-weight: 400; color: var(--ink-soft); }
.modal input, .modal select {
  width: 100%; font: inherit; padding: 0.7em 0.95em;
  border: 1.5px solid var(--line); border-radius: 11px; background: #fff;
}
.modal input:focus, .modal select:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 15%, transparent);
}
.modal form .btn { margin-top: 22px; }
.fine-print { font-size: 0.8rem; color: var(--ink-soft); margin-top: 14px; text-align: center; }

/* ── Homepage ────────────────────────────────────────────── */
.home-hero { text-align: center; padding: 110px 0 96px; }
.home-hero .sub { margin-left: auto; margin-right: auto; }
.home-products { padding: 92px 0 100px; text-align: center; }
.home-products h2 { margin-bottom: 1.2em; }
.product-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; text-align: left; }
.product-card {
  position: relative; display: block; text-decoration: none; color: var(--ink);
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 26px; box-shadow: var(--shadow-card);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
  overflow: hidden;
}
.product-card::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 4px;
  background: linear-gradient(90deg, var(--accent), color-mix(in srgb, var(--accent) 40%, #fff));
}
.product-card:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--accent) 40%, var(--line));
  box-shadow: 0 20px 44px -18px color-mix(in srgb, var(--accent) 45%, rgba(20,20,30,0.25));
}
.product-glyph {
  display: block; width: 34px; height: 34px; border-radius: 10px; margin-bottom: 18px;
  background: linear-gradient(140deg, var(--accent), color-mix(in srgb, var(--accent) 55%, #fff));
  box-shadow: 0 8px 18px -6px color-mix(in srgb, var(--accent) 70%, transparent);
}
.product-card h3 { font-family: var(--display); font-weight: 600; font-size: 1.25rem; }
.product-card p { color: var(--ink-soft); margin: 8px 0 16px; font-size: 0.95rem; }
.card-link { color: var(--accent); font-weight: 600; font-size: 0.93rem; }
.card-link .arrow { display: inline-block; transition: transform .18s ease; }
.product-card:hover .arrow { transform: translateX(4px); }

/* ── Legal pages ─────────────────────────────────────────── */
.legal-body { max-width: 720px; padding-top: 64px; padding-bottom: 96px; }
.legal-body h1 { font-size: 2.3rem; }
.legal-date { color: var(--ink-soft); margin: 10px 0 30px; font-size: 0.9rem; }
.legal-body h2 { font-size: 1.3rem; margin: 1.8em 0 0.5em; }
.legal-body ul { padding-left: 1.3em; }
.legal-body li { margin-bottom: 0.5em; }

/* ── Footer ──────────────────────────────────────────────── */
.site-footer { border-top: 1px solid var(--line); padding: 34px 0; }
.footer-inner { display: flex; align-items: center; gap: 26px; flex-wrap: wrap; }
.footer-brand { font-family: var(--display); font-weight: 700; font-size: 1.15rem; letter-spacing: -0.03em; color: var(--ink); }
.site-footer nav { display: flex; gap: 20px; flex-grow: 1; }
.site-footer a { color: var(--ink-soft); text-decoration: none; font-size: 0.9rem; }
.site-footer a:hover { color: var(--ink); }
.footer-copy { color: var(--ink-soft); font-size: 0.84rem; }

/* ── Scroll reveal ───────────────────────────────────────── */
/* Hidden initial state only when JS is running (.js on <html>) — without JS,
   content must simply be visible. */
.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity .55s ease, transform .55s ease; }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .pulse { animation: none; }
  html { scroll-behavior: auto; }
}

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 880px) {
  .hero { padding: 56px 0 68px; }
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .demo { max-width: 460px; }
  .demo-card { transform: none; }
  .steps, .tier-grid { grid-template-columns: 1fr; }
  .probe-grid { grid-template-columns: 1fr; }
  .final-panel { padding: 56px 24px; }
  /* Pricing/FAQ stay visible on phones — most ad traffic is mobile and those
     clicks are the intent signal this whole system exists to measure. */
  .btn-text { padding: 0.5em 0.55em; font-size: 0.9rem; }
  .btn-small { padding: 0.55em 1em; }
}
