/* =========================================================
   Arkadia Intelligence — Premium static landing page
   Dark, editorial, AWWWARDS-grade. Vanilla CSS, no build.
   ========================================================= */

/* ---------- Design tokens ---------- */
:root {
  /* palette: deep graphite/navy base, sovereign cyan + violet accents, platinum text */
  --bg:        #070a12;
  --bg-2:      #0b101c;
  --bg-3:      #0f1626;
  --panel:     rgba(255, 255, 255, 0.025);
  --panel-2:   rgba(255, 255, 255, 0.04);
  --border:    rgba(255, 255, 255, 0.09);
  --border-2:  rgba(255, 255, 255, 0.14);

  --text:      #eef2f7;
  --text-soft: #b6c0d4;
  --text-mute: #7e8aa3;

  --accent:    #7fe6ff; /* sovereign cyan */
  --accent-2:  #8a86ff; /* muted violet */
  --gold:      #d8c08a; /* champagne — used extremely sparingly */

  --grad: linear-gradient(120deg, #7fe6ff 0%, #8a86ff 60%, #c9b6ff 100%);

  --maxw: 1200px;
  --radius: 16px;
  --radius-sm: 10px;

  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --shadow: 0 30px 80px -40px rgba(0, 0, 0, 0.9);
}

/* ---------- Reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.65;
  color: var(--text-soft);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* subtle film grain / vignette for depth */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(1200px 700px at 70% -10%, rgba(138, 134, 255, 0.10), transparent 60%),
    radial-gradient(900px 600px at 10% 0%, rgba(127, 230, 255, 0.08), transparent 55%);
}

.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: clamp(20px, 5vw, 48px); position: relative; z-index: 1; }
.narrow { max-width: 820px; }
.center { text-align: center; }

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute; left: 12px; top: -60px;
  background: var(--accent); color: #06121a; padding: 10px 16px;
  border-radius: 8px; font-weight: 600; z-index: 200; transition: top .2s var(--ease);
}
.skip-link:focus { top: 12px; }

/* ---------- Typography ---------- */
.eyebrow {
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin: 0 0 1rem;
}
.section-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-optical-sizing: auto;
  color: var(--text);
  font-size: clamp(1.8rem, 1rem + 2.6vw, 3.1rem);
  line-height: 1.08;
  letter-spacing: -0.015em;
  margin: 0 0 1.2rem;
}
.lede { font-size: clamp(1rem, 0.95rem + 0.3vw, 1.18rem); color: var(--text-soft); margin: 0 0 1.1rem; max-width: 62ch; }
.grad-text {
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  font-weight: 600; font-size: 0.95rem; letter-spacing: 0.01em;
  padding: 0.85rem 1.5rem; border-radius: 999px;
  border: 1px solid transparent; transition: transform .35s var(--ease), box-shadow .35s var(--ease), background .3s, border-color .3s, color .3s;
  will-change: transform;
}
.btn-sm { padding: 0.6rem 1.1rem; font-size: 0.85rem; }
.btn-lg { padding: 1.05rem 2rem; font-size: 1.02rem; }
.btn-primary {
  color: #06121a;
  background: var(--grad);
  background-size: 160% 160%;
  box-shadow: 0 14px 34px -16px rgba(127, 230, 255, 0.6);
}
.btn-primary:hover { transform: translateY(-2px); background-position: 100% 0; box-shadow: 0 20px 44px -16px rgba(138, 134, 255, 0.7); }
.btn-ghost { color: var(--text); border-color: var(--border-2); background: var(--panel); }
.btn-ghost:hover { transform: translateY(-2px); border-color: var(--accent); color: #fff; }

.link-arrow { color: var(--accent); font-weight: 600; display: inline-flex; gap: .4rem; align-items: center; }
.link-arrow span { transition: transform .3s var(--ease); }
.link-arrow:hover span { transform: translateX(5px); }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  transition: background .35s var(--ease), border-color .35s, backdrop-filter .35s;
  border-bottom: 1px solid transparent;
}
.site-header[data-scrolled] {
  background: rgba(7, 10, 18, 0.72);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--border);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 1.5rem; }
.brand { display: inline-flex; align-items: center; gap: .6rem; }
.brand-mark { display: inline-grid; place-items: center; }
.brand-text { font-family: var(--font-display); font-size: 1.18rem; color: var(--text); letter-spacing: .01em; }
.brand-sub { color: var(--text-mute); margin-left: .35rem; font-style: italic; }

.nav-links { display: flex; gap: 1.8rem; margin-inline: auto; }
.nav-links a { font-size: 0.92rem; color: var(--text-soft); position: relative; padding: .3rem 0; transition: color .25s; }
.nav-links a::after { content: ""; position: absolute; left: 0; bottom: 0; width: 0; height: 1px; background: var(--accent); transition: width .3s var(--ease); }
.nav-links a:hover { color: #fff; }
.nav-links a:hover::after { width: 100%; }

.nav-actions { display: flex; align-items: center; gap: .8rem; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; width: 42px; height: 42px; align-items: center; justify-content: center; background: var(--panel); border: 1px solid var(--border); border-radius: 10px; }
.nav-toggle span { width: 18px; height: 1.5px; background: var(--text); transition: transform .3s var(--ease), opacity .3s; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.mobile-nav { display: none; flex-direction: column; gap: .25rem; padding: 1rem clamp(20px,5vw,48px) 1.5rem; background: rgba(7,10,18,0.96); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px); border-bottom: 1px solid var(--border); }
.mobile-nav a { padding: .85rem 0; color: var(--text-soft); border-bottom: 1px solid var(--border); }
.mobile-nav a:last-child { border-bottom: none; margin-top: .8rem; }
.mobile-nav .btn { color: #06121a; }

/* ---------- Hero ---------- */
.hero { position: relative; padding: clamp(5rem, 8vw, 9rem) 0 clamp(4rem, 6vw, 7rem); overflow: hidden; }
.hero-bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
.hero-grid {
  position: absolute; inset: -2px;
  background-image:
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 30%, transparent 75%);
  mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 30%, transparent 75%);
}
.hero-orb { position: absolute; border-radius: 50%; filter: blur(70px); opacity: .5; }
.hero-orb-1 { width: 460px; height: 460px; background: radial-gradient(circle, rgba(127,230,255,.5), transparent 65%); top: -120px; right: -60px; animation: float 14s var(--ease) infinite alternate; }
.hero-orb-2 { width: 520px; height: 520px; background: radial-gradient(circle, rgba(138,134,255,.45), transparent 65%); bottom: -200px; left: -120px; animation: float 18s var(--ease) infinite alternate-reverse; }
@keyframes float { to { transform: translate3d(40px, 30px, 0) scale(1.08); } }

.hero-inner { max-width: 920px; }
.hero-title {
  font-family: var(--font-display); font-weight: 400; font-optical-sizing: auto;
  font-size: clamp(2.6rem, 1.2rem + 5vw, 5.2rem);
  line-height: 1.02; letter-spacing: -0.025em; color: var(--text);
  margin: 0 0 1.5rem;
}
.hero-sub { font-size: clamp(1.05rem, 1rem + 0.4vw, 1.3rem); color: var(--text-soft); max-width: 64ch; margin: 0 0 2.2rem; }
.hero-cta { display: flex; flex-wrap: wrap; gap: .9rem; margin-bottom: 2.2rem; }
.hero-trust { font-size: 0.92rem; color: var(--text-mute); max-width: 60ch; border-left: 2px solid var(--border-2); padding-left: 1rem; }

/* ---------- Trust bar ---------- */
.trustbar { border-block: 1px solid var(--border); background: var(--bg-2); }
.trustbar-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: .9rem; padding: 1.1rem 0; font-size: 0.82rem; letter-spacing: 0.04em; color: var(--text-mute); text-transform: uppercase; }
.trustbar .dot { color: var(--accent); }

/* ---------- Sections ---------- */
.section { padding: clamp(4rem, 7vw, 8rem) 0; position: relative; }
.section-alt { background: linear-gradient(180deg, var(--bg-2), var(--bg)); border-block: 1px solid var(--border); }
.section-head { max-width: 760px; margin-bottom: clamp(2.5rem, 4vw, 4rem); }
.section-intro { color: var(--text-soft); font-size: 1.05rem; max-width: 60ch; }
em { color: var(--text); font-style: italic; }

/* ---------- Cards (generic) ---------- */
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: clamp(1.4rem, 2vw, 2rem);
  position: relative;
  transition: transform .4s var(--ease), border-color .4s, background .4s;
}
.card h3 { font-family: var(--font-display); font-weight: 400; color: var(--text); font-size: 1.3rem; line-height: 1.2; margin: 0 0 .7rem; }

/* ---------- Capabilities grid ---------- */
.cap-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 1.2rem; }
.cap-card { display: flex; flex-direction: column; overflow: hidden; }
.cap-card::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px;
  background: var(--grad);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude; opacity: 0; transition: opacity .4s var(--ease); pointer-events: none;
}
.cap-card:hover, .cap-card:focus-within { transform: translateY(-4px); background: var(--panel-2); border-color: transparent; }
.cap-card:hover::after, .cap-card:focus-within::after { opacity: .8; }
.card-index { font-family: var(--font-display); font-size: 0.95rem; color: var(--accent); letter-spacing: .1em; margin-bottom: 1.1rem; display: block; }
.cap-card p { font-size: 0.97rem; margin: 0 0 1rem; }
.card-list { list-style: none; margin: 0 0 1.2rem; padding: 0; display: grid; gap: .45rem; }
.card-list li { font-size: 0.9rem; color: var(--text-soft); padding-left: 1.3rem; position: relative; }
.card-list li::before { content: ""; position: absolute; left: 0; top: .62em; width: 7px; height: 7px; border-radius: 2px; background: var(--grad); }
.card-meta { font-size: 0.88rem; color: var(--text-mute); margin: auto 0 0; }
.card-meta strong { color: var(--text-soft); font-weight: 600; }
.cap-card--cta { background: linear-gradient(160deg, rgba(138,134,255,.10), rgba(127,230,255,.05)); border-color: var(--border-2); justify-content: center; }
.cap-card--cta p { color: var(--text-soft); }

/* ---------- Two column (why) ---------- */
.two-col { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: clamp(2rem, 5vw, 5rem); align-items: start; }
.why-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; counter-reset: w; }
.why-list li {
  font-size: 1.02rem; color: var(--text); padding: 1rem 0 1rem 2.6rem; border-bottom: 1px solid var(--border); position: relative; counter-increment: w;
}
.why-list li::before { content: counter(w, decimal-leading-zero); position: absolute; left: 0; top: 1rem; color: var(--accent); font-family: var(--font-display); font-size: 0.85rem; letter-spacing: .08em; }
.why-list li:first-child { padding-top: 0; }
.why-list li:first-child::before { top: 0; }
.why-list li:last-child { border-bottom: none; }

/* ---------- Objection grid ---------- */
.obj-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(310px, 1fr)); gap: 1.2rem; }
.obj-card h3 { font-size: 1.12rem; color: var(--accent); }
.obj-card p { font-size: 0.96rem; margin: 0; }
.obj-card:hover { transform: translateY(-3px); border-color: var(--border-2); }

/* ---------- Markets ---------- */
.market-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.2rem; }
.market-card { background: linear-gradient(165deg, var(--bg-3), var(--bg-2)); }
.market-card h3 { font-size: 1.45rem; margin-bottom: .9rem; }
.market-card h3::after { content: ""; display: block; width: 38px; height: 2px; background: var(--grad); margin-top: .7rem; }
.market-card p { font-size: 0.95rem; margin: 0; }
.market-card:hover { transform: translateY(-3px); border-color: var(--border-2); }

/* ---------- Process timeline ---------- */
.process-timeline { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 1.2rem; counter-reset: none; }
.process-timeline li { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.6rem 1.5rem; transition: transform .4s var(--ease), border-color .4s; }
.process-timeline li:hover { transform: translateY(-3px); border-color: var(--border-2); }
.step-num { font-family: var(--font-display); font-size: 1.6rem; color: transparent; background: var(--grad); -webkit-background-clip: text; background-clip: text; display: block; margin-bottom: .8rem; }
.process-timeline h3 { font-size: 1.1rem; margin: 0 0 .5rem; }
.process-timeline p { font-size: 0.9rem; margin: 0; color: var(--text-mute); }

/* ---------- Proof note ---------- */
.proof-note { font-size: 0.95rem; color: var(--text-mute); border-left: 2px solid var(--border-2); padding-left: 1.1rem; margin-top: 2rem; }

/* ---------- Diagnostic form ---------- */
.form-wrap { display: grid; grid-template-columns: 0.95fr 1.05fr; gap: clamp(2rem, 5vw, 4.5rem); align-items: start; }
.form-intro { position: sticky; top: 100px; }
.diagnostic-form { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem 1.2rem; padding: clamp(1.6rem, 3vw, 2.6rem); }
.field { display: flex; flex-direction: column; gap: .45rem; }
.field-full { grid-column: 1 / -1; }
.field label { font-size: 0.85rem; font-weight: 500; color: var(--text-soft); letter-spacing: .01em; }
.req { color: var(--accent); }
.field input, .field select, .field textarea {
  font-family: inherit; font-size: 0.97rem; color: var(--text);
  background: rgba(255,255,255,0.03); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: .8rem .9rem; transition: border-color .25s, background .25s, box-shadow .25s;
  width: 100%;
}
.field textarea { resize: vertical; min-height: 110px; }
.field select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%237fe6ff' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 1rem center; padding-right: 2.4rem; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--accent); background: rgba(127,230,255,0.04); box-shadow: 0 0 0 3px rgba(127,230,255,0.12); }
.field input::placeholder, .field textarea::placeholder { color: var(--text-mute); }
.field.invalid input, .field.invalid select, .field.invalid textarea { border-color: #ff7b7b; box-shadow: 0 0 0 3px rgba(255,123,123,0.12); }

/* honeypot hidden */
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.consent { gap: .9rem; }
.checkbox { display: grid; grid-template-columns: auto 1fr; gap: .7rem; align-items: start; font-size: 0.85rem; color: var(--text-soft); cursor: pointer; line-height: 1.5; }
.checkbox input { width: 18px; height: 18px; margin-top: 2px; accent-color: var(--accent); cursor: pointer; }
.checkbox a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
.optout { color: var(--text-mute); }
.privacy-note { font-size: 0.8rem; color: var(--text-mute); line-height: 1.55; margin: 0; }
.privacy-note a { color: var(--text-soft); text-decoration: underline; text-underline-offset: 2px; }

.form-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem; }
.form-status { font-size: 0.88rem; margin: 0; }
.form-status.ok { color: var(--accent); }
.form-status.err { color: #ff9b9b; }
.btn[data-submit][aria-busy="true"] { opacity: .7; pointer-events: none; }

/* ---------- Final CTA ---------- */
.final-cta { background: radial-gradient(800px 400px at 50% 0%, rgba(138,134,255,0.12), transparent 70%); }
.final-cta .lede { margin-inline: auto; }
.final-cta .btn { margin-top: 1.5rem; }

/* ---------- FAQ ---------- */
.faq { display: grid; gap: 0; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item summary { cursor: pointer; list-style: none; padding: 1.35rem 2.5rem 1.35rem 0; font-family: var(--font-display); font-size: 1.18rem; color: var(--text); position: relative; transition: color .25s; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: #fff; }
.faq-item summary::after { content: "+"; position: absolute; right: 0; top: 50%; transform: translateY(-50%); font-size: 1.5rem; color: var(--accent); transition: transform .3s var(--ease); font-family: var(--font-sans); }
.faq-item[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq-body { padding: 0 2.5rem 1.5rem 0; }
.faq-body p { margin: 0; color: var(--text-soft); font-size: 1rem; }
.faq-body a { color: var(--accent); }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--border); background: var(--bg-2); padding-top: clamp(3rem, 5vw, 5rem); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.4fr; gap: 2.5rem; padding-bottom: 3rem; }
.footer-brand .brand-text { font-size: 1.3rem; }
.footer-brand p { font-size: 0.92rem; color: var(--text-mute); margin: 1rem 0 0; max-width: 32ch; }
.footer-contact a { color: var(--accent); }
.footer-col h3 { font-size: 0.78rem; text-transform: uppercase; letter-spacing: .14em; color: var(--text-mute); margin: 0 0 1.1rem; font-weight: 600; }
.footer-col a { display: block; font-size: 0.92rem; color: var(--text-soft); padding: .35rem 0; transition: color .2s; }
.footer-col a:hover { color: #fff; }
.footer-privacy p { font-size: 0.85rem; color: var(--text-mute); margin: 0; line-height: 1.6; }
.footer-privacy a { color: var(--text-soft); text-decoration: underline; text-underline-offset: 2px; }
.footer-legal { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; padding: 1.6rem 0 2.4rem; border-top: 1px solid var(--border); }
.footer-legal p { font-size: 0.8rem; color: var(--text-mute); margin: 0; }
.footer-disclaimer { max-width: 60ch; text-align: right; }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .two-col { grid-template-columns: 1fr; }
  .form-wrap { grid-template-columns: 1fr; }
  .form-intro { position: static; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-disclaimer { text-align: left; }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-actions .btn-primary { display: none; }
  .nav-toggle { display: flex; }
  .mobile-nav { display: flex; }
  .mobile-nav[hidden] { display: none; }
  .diagnostic-form { grid-template-columns: 1fr; }
  .footer-legal { flex-direction: column; }
}
@media (max-width: 520px) {
  body { font-size: 16px; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-trust { padding-left: .8rem; }
}