/* ============================================================================
   riilogic marketing site — riilogic.com
   Dark-first, single-theme, zero-framework. Shares the type/spacing register
   of the product design system (frontend/src/index.css) at marketing scale.
   ========================================================================== */

@font-face {
  font-family: 'Inter Variable';
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  src: url('/assets/fonts/inter-latin-wght-normal.woff2') format('woff2-variations');
}

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

:root {
  /* Palette — deep slate + electric blue/violet, matching the app's dark theme */
  --bg: #07090d;
  --bg2: #0d1117;
  --bg3: #131922;
  --panel: rgba(255,255,255,.028);
  --panel-strong: rgba(255,255,255,.05);
  --border: rgba(255,255,255,.08);
  --border2: rgba(255,255,255,.14);
  --text: #eef2f7;
  --text2: #a7b1c2;   /* ≥ 4.5:1 on --bg */
  --text3: #6b7688;
  --accent: #3b82f6;
  --accent2: #7c3aed;
  --accent-soft: #9cc1fb;
  --green: #34d07f;
  --amber: #f0a52a;
  --grad: linear-gradient(135deg, #2563eb, #7c3aed);

  --content: 1160px;
  --ease: cubic-bezier(.4,0,.2,1);
  --r-sm: 8px; --r-md: 12px; --r-lg: 18px; --r-pill: 999px;
}

html { scroll-behavior: smooth; scroll-padding-top: 84px; }

body {
  font-family: 'Inter Variable', Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.6;
  font-weight: 440;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "cv05","ss01";
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img, svg { max-width: 100%; display: block; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

:focus { outline: none; }
:focus-visible { outline: 2px solid var(--accent-soft); outline-offset: 3px; border-radius: 4px; }

::selection { background: rgba(59,130,246,.35); }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--accent); color: #fff; padding: 10px 18px; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

.container { max-width: var(--content); margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 860px; }

/* ----------------------------- Buttons ----------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border-radius: var(--r-pill);
  padding: 9px 20px;
  font-size: 14.5px; font-weight: 560; letter-spacing: .005em;
  white-space: nowrap;
  transition: transform .16s var(--ease), box-shadow .16s var(--ease),
              background .16s var(--ease), border-color .16s var(--ease);
}
.btn:active { transform: translateY(1px); }
.btn-lg { padding: 13px 28px; font-size: 15.5px; }
.btn-primary {
  background: var(--grad); color: #fff;
  box-shadow: 0 1px 2px rgba(0,0,0,.4), 0 0 0 1px rgba(255,255,255,.08) inset,
              0 8px 24px -8px rgba(59,130,246,.55);
}
.btn-primary:hover { box-shadow: 0 1px 2px rgba(0,0,0,.4), 0 0 0 1px rgba(255,255,255,.14) inset, 0 10px 32px -6px rgba(59,130,246,.7); transform: translateY(-1px); }
.btn-outline { border: 1px solid var(--border2); color: var(--text); background: rgba(255,255,255,.02); }
.btn-outline:hover { border-color: rgba(255,255,255,.3); background: rgba(255,255,255,.05); }
.btn-ghost { color: var(--text2); }
.btn-ghost:hover { color: var(--text); }

/* ------------------------------- Nav ------------------------------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(7,9,13,.72);
  border-bottom: 1px solid transparent;
  transition: border-color .2s var(--ease), background .2s var(--ease);
}
.nav.is-scrolled { border-bottom-color: var(--border); background: rgba(7,9,13,.85); }
.nav-inner {
  max-width: var(--content); margin: 0 auto; padding: 0 24px;
  height: 66px; display: flex; align-items: center; gap: 32px;
}
.brand { display: flex; align-items: center; gap: 10px; font-size: 16px; }
.brand-mark { flex: none; }
.brand-name { font-weight: 660; letter-spacing: -.01em; }
.brand-divider { width: 1px; height: 18px; background: var(--border2); }
.brand-product { color: var(--text2); font-weight: 480; }
.nav-links { display: flex; gap: 26px; margin-left: 12px; }
.nav-links a { color: var(--text2); font-size: 14.5px; font-weight: 480; transition: color .15s var(--ease); }
.nav-links a:hover { color: var(--text); }
.nav-actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }

.nav-burger { display: none; margin-left: auto; width: 40px; height: 40px; position: relative; }
.nav-burger span {
  position: absolute; left: 9px; right: 9px; height: 2px; border-radius: 2px;
  background: var(--text); transition: transform .2s var(--ease), top .2s var(--ease);
}
.nav-burger span:nth-child(1) { top: 15px; }
.nav-burger span:nth-child(2) { top: 23px; }
.nav-burger[aria-expanded="true"] span:nth-child(1) { top: 19px; transform: rotate(45deg); }
.nav-burger[aria-expanded="true"] span:nth-child(2) { top: 19px; transform: rotate(-45deg); }

.mobile-menu {
  display: none; flex-direction: column; gap: 4px;
  padding: 8px 24px 20px; border-bottom: 1px solid var(--border);
  background: rgba(7,9,13,.97);
}
.mobile-menu a { padding: 10px 0; color: var(--text2); font-size: 16px; }
.mobile-menu a:hover { color: var(--text); }
.mobile-menu-actions { display: flex; gap: 10px; margin-top: 12px; }
.mobile-menu-actions .btn { flex: 1; }

/* ------------------------------- Hero ------------------------------- */
.hero { position: relative; padding: 96px 0 72px; overflow: hidden; }
.hero-bg {
  position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(52% 44% at 68% 12%, rgba(37,99,235,.16), transparent 70%),
    radial-gradient(40% 36% at 22% 4%, rgba(124,58,237,.12), transparent 70%),
    linear-gradient(rgba(255,255,255,.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.028) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 44px 44px, 44px 44px;
  mask-image: linear-gradient(#000 0%, #000 62%, transparent 100%);
  -webkit-mask-image: linear-gradient(#000 0%, #000 62%, transparent 100%);
}
.hero-grid {
  position: relative;
  display: grid; grid-template-columns: minmax(0, 5.2fr) minmax(0, 5.8fr);
  gap: 56px; align-items: center;
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 12.5px; font-weight: 560; letter-spacing: .09em; text-transform: uppercase;
  color: var(--accent-soft);
  border: 1px solid rgba(59,130,246,.3); border-radius: var(--r-pill);
  padding: 6px 14px; margin-bottom: 26px;
  background: rgba(37,99,235,.08);
}
.eyebrow-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--green); box-shadow: 0 0 8px var(--green); }

h1 {
  font-size: clamp(38px, 5.4vw, 62px);
  line-height: 1.04; letter-spacing: -.032em; font-weight: 660;
  margin-bottom: 22px;
}
h1 em, .section-title em {
  font-style: normal;
  background: linear-gradient(100deg, #8cb4fb, #b79bf7);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lede { font-size: clamp(16px, 1.5vw, 18.5px); color: var(--text2); max-width: 54ch; margin-bottom: 34px; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 14px; }
.hero-ctas-center { justify-content: center; }
.hero-note { margin-top: 18px; font-size: 13.5px; color: var(--text3); }

/* Product mock */
.hero-visual { position: relative; min-width: 0; }
.hero-visual::before {
  content: ""; position: absolute; inset: -8% -6%;
  background: radial-gradient(50% 50% at 50% 50%, rgba(59,130,246,.14), transparent 70%);
  pointer-events: none;
}
.mock {
  position: relative;
  border: 1px solid var(--border2); border-radius: var(--r-lg);
  background: linear-gradient(180deg, #10151d, #0b0f15);
  box-shadow: 0 40px 80px -24px rgba(0,0,0,.7), 0 0 0 1px rgba(255,255,255,.03) inset;
  overflow: hidden;
  font-size: 12.5px;
}
.mock-titlebar {
  display: flex; align-items: center; gap: 7px;
  padding: 11px 16px; border-bottom: 1px solid var(--border);
  background: rgba(255,255,255,.02);
}
.mock-dot { width: 10px; height: 10px; border-radius: 50%; background: rgba(255,255,255,.12); }
.mock-url { margin-left: 10px; color: var(--text3); font-size: 11.5px; letter-spacing: .01em; }
.mock-body { display: grid; grid-template-columns: 132px 1fr; min-height: 300px; }
.mock-side { border-right: 1px solid var(--border); padding: 14px 10px; display: flex; flex-direction: column; gap: 3px; }
.mock-side-item { padding: 7px 10px; border-radius: 7px; color: var(--text3); font-weight: 480; }
.mock-side-item.is-active { background: rgba(59,130,246,.14); color: var(--accent-soft); }
.mock-main { padding: 16px 18px; display: flex; flex-direction: column; gap: 10px; }
.mock-row {
  display: grid; grid-template-columns: 1.7fr .6fr 1fr .9fr;
  gap: 12px; align-items: center;
  padding: 9px 12px; border: 1px solid var(--border); border-radius: 9px;
  background: var(--panel); color: var(--text2);
  font-variant-numeric: tabular-nums;
}
.mock-header-row {
  border: 0; background: none; padding: 0 12px; color: var(--text3);
  font-size: 10.5px; letter-spacing: .08em; text-transform: uppercase; font-weight: 560;
}
.mock-wave { color: var(--text); font-weight: 520; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mock-meter { height: 5px; border-radius: 99px; background: rgba(255,255,255,.09); overflow: hidden; }
.mock-meter i { display: block; height: 100%; border-radius: 99px; background: linear-gradient(90deg, #2563eb, #60a5fa); }
.mock-meter-amber i { background: linear-gradient(90deg, #b97708, #f0a52a); }
.mock-badge {
  justify-self: start; padding: 3px 9px; border-radius: 99px;
  font-size: 10.5px; font-weight: 560; letter-spacing: .02em;
  background: rgba(255,255,255,.06); color: var(--text3);
}
.mock-badge-green { background: rgba(52,208,127,.14); color: var(--green); }
.mock-badge-blue  { background: rgba(59,130,246,.16); color: var(--accent-soft); }
.mock-badge-amber { background: rgba(240,165,42,.14); color: var(--amber); }
.mock-footer { margin-top: auto; display: flex; align-items: center; gap: 8px; color: var(--text3); font-size: 11.5px; padding-top: 6px; }
.mock-pulse { width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 10px var(--green); animation: pulse 2.4s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .35; } }

/* --------------------------- Truth strip --------------------------- */
.truths { border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: rgba(255,255,255,.015); }
.truths-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.truth { padding: 26px 24px; display: flex; flex-direction: column; gap: 3px; }
.truth + .truth { border-left: 1px solid var(--border); }
.truth strong { font-size: 16.5px; font-weight: 620; letter-spacing: -.01em; }
.truth span { font-size: 13px; color: var(--text3); line-height: 1.45; }

/* ----------------------------- Sections ----------------------------- */
.section { padding: 110px 0; }
.section-alt { background: linear-gradient(180deg, rgba(255,255,255,.018), rgba(255,255,255,0)); border-top: 1px solid var(--border); }
.kicker {
  font-size: 12.5px; font-weight: 580; letter-spacing: .12em; text-transform: uppercase;
  color: var(--accent-soft); margin-bottom: 18px;
}
.section-title {
  font-size: clamp(28px, 3.6vw, 44px);
  line-height: 1.1; letter-spacing: -.028em; font-weight: 640;
  margin-bottom: 22px; max-width: 22ch;
}
.section-lede { color: var(--text2); font-size: 17px; max-width: 62ch; margin-bottom: 48px; }

/* Reveal-on-scroll (JS adds .reveal; no-JS stays visible) */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }

/* ----------------------------- Compare ----------------------------- */
.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-top: 44px; }
.compare-col { border-radius: var(--r-lg); padding: 34px 32px; border: 1px solid var(--border); }
.compare-col h3 { font-size: 14px; letter-spacing: .08em; text-transform: uppercase; font-weight: 600; margin-bottom: 20px; }
.compare-col ul { list-style: none; display: flex; flex-direction: column; gap: 14px; }
.compare-col li { padding-left: 26px; position: relative; color: var(--text2); font-size: 15px; }
.compare-old { background: rgba(255,255,255,.015); }
.compare-old h3 { color: var(--text3); }
.compare-old li::before { content: "×"; position: absolute; left: 0; top: -1px; color: var(--text3); font-weight: 600; }
.compare-new {
  background: linear-gradient(180deg, rgba(37,99,235,.09), rgba(124,58,237,.04));
  border-color: rgba(59,130,246,.3);
}
.compare-new h3 { color: var(--accent-soft); }
.compare-new li { color: var(--text); }
.compare-new li::before { content: "✓"; position: absolute; left: 0; top: -1px; color: var(--green); font-weight: 600; }

/* ------------------------------ Mantra ------------------------------ */
.mantra {
  position: relative; text-align: center;
  padding: 96px 0;
  border-top: 1px solid var(--border);
  background:
    radial-gradient(40% 70% at 50% 50%, rgba(37,99,235,.09), transparent 75%);
  overflow: hidden;
}
.mantra-line {
  font-size: clamp(30px, 4.6vw, 54px);
  line-height: 1.06; letter-spacing: -.032em; font-weight: 660;
}
.mantra-line em {
  font-style: normal;
  background: linear-gradient(100deg, #8cb4fb, #b79bf7);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.mantra-sub {
  margin-top: 16px;
  color: var(--text2); font-size: clamp(14.5px, 1.4vw, 17px);
}

/* ----------------------------- Journey ----------------------------- */
.journey {
  list-style: none; counter-reset: step;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px;
  margin-top: 12px;
}
.journey-step {
  position: relative;
  border: 1px solid var(--border); border-radius: var(--r-lg);
  background: var(--panel);
  padding: 30px 28px 28px;
  transition: border-color .2s var(--ease), background .2s var(--ease);
}
.journey-step:hover { border-color: rgba(59,130,246,.4); background: var(--panel-strong); }
.journey-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 32px; height: 32px; border-radius: 9px;
  background: rgba(59,130,246,.14); color: var(--accent-soft);
  font-weight: 640; font-size: 14px; margin-bottom: 18px;
  font-variant-numeric: tabular-nums;
}
.journey-step h3 { font-size: 18px; font-weight: 620; letter-spacing: -.015em; margin-bottom: 8px; }
.journey-step p { color: var(--text2); font-size: 14.5px; }

/* ----------------------------- Features ----------------------------- */
.features { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-top: 48px; }
.feature {
  border: 1px solid var(--border); border-radius: var(--r-lg);
  background: var(--panel);
  padding: 36px 34px;
  transition: border-color .2s var(--ease), background .2s var(--ease);
}
.feature:hover { border-color: var(--border2); background: var(--panel-strong); }
.feature-wide { grid-column: span 2; background: linear-gradient(135deg, rgba(37,99,235,.07), rgba(255,255,255,.02) 55%); }
.feature h3 { font-size: 20px; font-weight: 620; letter-spacing: -.018em; margin-bottom: 10px; }
.feature p { color: var(--text2); font-size: 15px; max-width: 78ch; }

/* ------------------------------ Cases ------------------------------ */
.cases { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; margin-top: 48px; }
.case {
  border-left: 2px solid rgba(59,130,246,.5);
  padding: 6px 0 6px 26px;
}
.case h3 { font-size: 18px; font-weight: 620; letter-spacing: -.015em; margin-bottom: 8px; }
.case p { color: var(--text2); font-size: 15px; }

/* ------------------------------- FAQ ------------------------------- */
.faq { display: flex; flex-direction: column; margin-top: 40px; border-top: 1px solid var(--border); }
.faq details { border-bottom: 1px solid var(--border); }
.faq summary {
  cursor: pointer; list-style: none;
  padding: 22px 44px 22px 2px; position: relative;
  font-size: 17px; font-weight: 560; letter-spacing: -.01em;
  transition: color .15s var(--ease);
}
.faq summary:hover { color: var(--accent-soft); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 6px; top: 50%;
  transform: translateY(-50%);
  font-size: 22px; font-weight: 400; color: var(--text3);
  transition: transform .2s var(--ease);
}
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); color: var(--accent-soft); }
.faq details p { padding: 0 2px 24px; color: var(--text2); font-size: 15px; max-width: 72ch; }

/* ----------------------------- Final CTA ----------------------------- */
.final-cta {
  position: relative; text-align: center;
  padding: 130px 0 140px;
  border-top: 1px solid var(--border);
  background:
    radial-gradient(46% 60% at 50% 0%, rgba(37,99,235,.18), transparent 72%),
    radial-gradient(30% 40% at 62% 20%, rgba(124,58,237,.1), transparent 70%);
}
.final-cta h2 {
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.08; letter-spacing: -.03em; font-weight: 660;
  margin-bottom: 18px;
}
.final-cta p { color: var(--text2); font-size: 17px; margin-bottom: 36px; }

/* ------------------------------ Footer ------------------------------ */
.footer { border-top: 1px solid var(--border); padding: 64px 0 36px; background: var(--bg2); }
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px;
  padding-bottom: 44px;
}
.footer-brand p { color: var(--text3); font-size: 13.5px; margin-top: 12px; max-width: 34ch; }
.footer h3 { font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--text3); font-weight: 580; margin-bottom: 14px; }
.footer nav { display: flex; flex-direction: column; gap: 10px; }
.footer nav a { color: var(--text2); font-size: 14px; transition: color .15s var(--ease); }
.footer nav a:hover { color: var(--text); }
.footer-legal {
  border-top: 1px solid var(--border); padding-top: 26px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px;
  color: var(--text3); font-size: 12.5px;
}

/* ---------------------------- Responsive ---------------------------- */
@media (max-width: 1020px) {
  .hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .hero-copy { max-width: 640px; }
  .journey { grid-template-columns: repeat(2, 1fr); }
  .truths-grid { grid-template-columns: repeat(2, 1fr); }
  .truth:nth-child(3) { border-left: 0; }
  .truth:nth-child(n+3) { border-top: 1px solid var(--border); }
}

@media (max-width: 760px) {
  .section { padding: 76px 0; }
  .nav-links, .nav-actions { display: none; }
  .nav-burger { display: block; }
  .mobile-menu[data-open] { display: flex; }
  .brand-divider, .brand-product { display: none; }
  .compare { grid-template-columns: 1fr; }
  .features { grid-template-columns: 1fr; }
  .feature-wide { grid-column: auto; }
  .cases { grid-template-columns: 1fr; }
  .journey { grid-template-columns: 1fr; }
  .truths-grid { grid-template-columns: 1fr; }
  .truth + .truth { border-left: 0; border-top: 1px solid var(--border); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: span 2; }
  .hero { padding: 56px 0 48px; }
  .mock-body { grid-template-columns: 1fr; }
  .mock-side { display: none; }
  .mock-row { grid-template-columns: 1.6fr .5fr .9fr; }
  .mock-row > :nth-child(3) { display: none; }
  .mock-header-row > :nth-child(3) { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}