/* ============================================================
   StanleyAI — shared design tokens + homepage
   Dark only. Indigo #6366F1 + Cyan #22D3EE. Space Grotesk / Inter / JetBrains Mono.
   ============================================================ */

:root{
  /* color */
  --bg:#0A0A0F;
  --bg-raised:#101018;
  --bg-card:#12121C;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --text:#E7E7EF;
  --text-dim:#9494A6;
  --text-faint:#7E7E94;
  --indigo:#6366F1;
  --cyan:#22D3EE;
  --indigo-soft:rgba(99,102,241,.14);
  --cyan-soft:rgba(34,211,238,.12);
  --danger:#F43F5E;
  --ok:#34D399;
  /* type */
  --font-display:'Space Grotesk',system-ui,sans-serif;
  --font-body:'Inter',system-ui,sans-serif;
  --font-mono:'JetBrains Mono',ui-monospace,monospace;
  /* motion */
  --ease-out:cubic-bezier(.16,1,.3,1);
  --ease-spring:cubic-bezier(.34,1.3,.64,1);
  --dur-fast:150ms;
  --dur-base:300ms;
  --dur-slow:600ms;
  --dur-cine:900ms;
  /* layout */
  --max:1120px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:var(--font-body);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
::selection{background:var(--indigo);color:#fff}

h1,h2,h3,.display{font-family:var(--font-display);font-weight:700;letter-spacing:-.02em;line-height:1.08}
.mono{font-family:var(--font-mono)}

/* ---------- shared atoms ---------- */
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.eyebrow{font-family:var(--font-mono);font-size:12px;font-weight:500;letter-spacing:.22em;text-transform:uppercase;color:var(--cyan)}
.btn{display:inline-flex;align-items:center;gap:8px;border-radius:10px;font-size:15px;font-weight:600;padding:13px 26px;border:1px solid transparent;transition:transform var(--dur-fast) var(--ease-out),background var(--dur-fast) var(--ease-out),border-color var(--dur-fast) var(--ease-out)}
.btn:active{transform:scale(.98)}
.btn-primary{background:var(--indigo);color:#fff}
.btn-primary:hover{background:#7477F5}
.btn-ghost{background:transparent;color:var(--text-dim);border-color:var(--line-strong)}
.btn-ghost:hover{color:var(--text);border-color:rgba(255,255,255,.28)}

/* scroll reveal */
.rv{opacity:0;transform:translateY(22px);transition:opacity var(--dur-slow) var(--ease-out),transform var(--dur-slow) var(--ease-out)}
.rv.in{opacity:1;transform:none}
.rv-d1{transition-delay:80ms}.rv-d2{transition-delay:160ms}.rv-d3{transition-delay:240ms}

/* ---------- banner ---------- */
.banner{background:linear-gradient(90deg,var(--indigo),var(--cyan));color:#fff;text-align:center;padding:9px 16px;font-family:var(--font-mono);font-size:12px;font-weight:500;letter-spacing:.14em}

/* ---------- nav ---------- */
nav{position:sticky;top:0;z-index:100;display:flex;justify-content:space-between;align-items:center;padding:14px 28px;border-bottom:1px solid var(--line);background:rgba(10,10,15,.82);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.nav-logo{display:flex;align-items:center;gap:10px}
.nav-logo span{font-family:var(--font-display);font-size:17px;font-weight:700}
.nav-logo .ai{color:#8F91F8}
.nav-links{display:flex;align-items:center;gap:26px;font-size:14px;color:var(--text-dim)}
.nav-links a,.nav-links button{background:none;border:none;font-size:14px;color:var(--text-dim);transition:color var(--dur-fast)}
.nav-links a:hover,.nav-links button:hover{color:var(--text)}
.nav-links .nav-cta{color:var(--cyan);font-weight:600}

/* ---------- hero ---------- */
.hero{position:relative;min-height:88vh;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:72px 24px 56px;overflow:hidden}
.hero-glow{position:absolute;inset:0;pointer-events:none;background:
  radial-gradient(720px 420px at 30% 12%,rgba(99,102,241,.16),transparent 62%),
  radial-gradient(640px 400px at 72% 80%,rgba(34,211,238,.10),transparent 60%);
  animation:glowDrift 14s var(--ease-out) infinite alternate}
@keyframes glowDrift{from{transform:translate3d(-2%,0,0) scale(1)}to{transform:translate3d(2%,3%,0) scale(1.06)}}
.hero-lockup{display:flex;align-items:center;gap:14px;margin-bottom:34px}
.hero-lockup .name{font-family:var(--font-display);font-size:40px;font-weight:700;line-height:1}
.hero-lockup .sub{font-family:var(--font-mono);font-size:11px;color:var(--text-faint);letter-spacing:.32em;margin-top:5px}
.hero h1{font-size:clamp(42px,7.6vw,88px);max-width:13ch;margin-bottom:22px}
.hero h1 .grad{background:linear-gradient(92deg,var(--indigo),var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .desc{font-size:clamp(16px,2.4vw,20px);color:var(--text-dim);max-width:600px;line-height:1.6;margin-bottom:38px}
.hero-btns{display:flex;gap:12px;flex-wrap:wrap;justify-content:center}
.scroll-hint{position:absolute;bottom:26px;font-family:var(--font-mono);font-size:11px;color:var(--text-faint);letter-spacing:.3em}

/* ---------- demo teaser ---------- */
.teaser{padding:88px 24px;border-top:1px solid var(--line)}
.teaser-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:48px;align-items:center;max-width:var(--max);margin:0 auto}
.teaser h2{font-size:clamp(28px,4.4vw,44px);margin:14px 0 16px}
.teaser p{color:var(--text-dim);margin-bottom:26px;max-width:46ch}
.teaser-cta{font-weight:600;color:var(--cyan);font-size:16px}
.teaser-cta:hover{text-decoration:underline}
/* mini recall loop (pure CSS/JS, no video bytes) */
.teaser-shot{background:var(--bg-card);border:1px solid var(--line);border-radius:16px;padding:20px;box-shadow:0 24px 64px rgba(0,0,0,.44)}
.teaser-chrome{display:flex;align-items:center;gap:8px;padding-bottom:14px;border-bottom:1px solid var(--line);margin-bottom:16px}
.teaser-chrome i{width:9px;height:9px;border-radius:50%;background:var(--line-strong);display:block}
.teaser-chrome span{font-family:var(--font-mono);font-size:11px;color:var(--text-faint);margin-left:8px}
.t-q{display:inline-block;background:var(--indigo-soft);border:1px solid rgba(99,102,241,.4);color:var(--text);border-radius:10px;padding:8px 12px;font-size:13.5px;margin-bottom:14px}
.t-a{font-size:13.5px;color:var(--text-dim);line-height:1.65;min-height:88px}
.t-a .caret{display:inline-block;width:7px;height:15px;background:var(--cyan);vertical-align:-2px;margin-left:2px;animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
.t-src{display:flex;gap:8px;margin-top:14px}
.t-chip{font-family:var(--font-mono);font-size:10.5px;color:var(--cyan);background:var(--cyan-soft);border:1px solid rgba(34,211,238,.3);border-radius:6px;padding:3px 8px;opacity:0;transform:translateY(6px);transition:all var(--dur-base) var(--ease-out)}
.t-chip.in{opacity:1;transform:none}

/* ---------- sections ---------- */
.section{padding:96px 24px;border-top:1px solid var(--line)}
.section-head{text-align:center;max-width:680px;margin:0 auto 52px}
.section-head h2{font-size:clamp(28px,4.6vw,46px);margin:14px 0 14px}
.section-head p{color:var(--text-dim)}

/* wedge */
.wedge{max-width:700px;margin:0 auto;text-align:center}
.wedge h2{font-size:clamp(30px,5.4vw,52px);margin:16px 0 22px}
.wedge h2 em{font-style:normal;color:var(--danger)}
.wedge p{font-size:17px;color:var(--text-dim);line-height:1.7}
.wedge .answer{margin-top:30px;font-size:clamp(18px,3vw,24px);color:var(--text);font-weight:300;line-height:1.55}
.wedge .answer b{color:var(--indigo);font-weight:700}

/* remembers strip */
.rlg{font-family:var(--font-display);font-size:clamp(40px,8.6vw,84px);font-weight:700;letter-spacing:-.02em;line-height:1.22;text-align:center;padding:24px}
.rlg div:nth-child(1){color:var(--indigo)}
.rlg div:nth-child(2){color:var(--cyan)}
.rlg div:nth-child(3){color:var(--text)}
.rlg-sub{text-align:center;font-size:15px;color:var(--text-faint);margin-top:10px}

/* brain score */
.score{text-align:center}
.score-nums{display:flex;justify-content:center;align-items:baseline;gap:14px;margin-top:26px}
.score-nums .old{font-family:var(--font-mono);font-size:clamp(48px,8vw,76px);font-weight:700;color:var(--text-faint)}
.score-nums .arrow{font-size:26px;color:var(--text-faint)}
.score-nums .new{font-family:var(--font-mono);font-size:clamp(48px,8vw,76px);font-weight:700;color:var(--ok)}
.score-sub{font-size:15px;color:var(--text-faint);margin-top:10px}

/* bento */
.bento{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;max-width:var(--max);margin:0 auto}
.bento-card{background:var(--bg-card);border:1px solid var(--line);border-radius:16px;padding:26px 22px;transition:border-color var(--dur-base) var(--ease-out),transform var(--dur-base) var(--ease-out)}
.bento-card:hover{border-color:rgba(99,102,241,.45);transform:translateY(-3px)}
.bento-card .big{font-family:var(--font-display);font-size:19px;font-weight:700;margin-bottom:8px}
.bento-card .small{font-size:13.5px;color:var(--text-dim);line-height:1.55}
.bento-card .k{font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;color:var(--cyan);text-transform:uppercase;display:block;margin-bottom:12px}

/* mechanisms */
.mech-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;max-width:900px;margin:0 auto}
.mech-card{background:var(--bg-card);border:1px solid var(--line);border-radius:16px;padding:24px}
.mech-card .label{font-family:var(--font-mono);font-size:12px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;margin-bottom:10px}
.mech-card .text{font-size:13.5px;color:var(--text-dim);line-height:1.6}

/* before / after */
.ba{display:grid;grid-template-columns:1fr 1fr;gap:16px;max-width:880px;margin:0 auto}
.ba-card{border-radius:16px;padding:28px;border:1px solid var(--line)}
.ba-card.bad{background:var(--bg-raised)}
.ba-card.good{background:linear-gradient(180deg,rgba(99,102,241,.10),rgba(99,102,241,.03));border-color:rgba(99,102,241,.35)}
.ba-tag{font-family:var(--font-mono);font-size:11px;font-weight:600;letter-spacing:.16em;margin-bottom:12px}
.ba-card.bad .ba-tag{color:var(--danger)}
.ba-card.good .ba-tag{color:var(--cyan)}
.ba-card .quote{font-size:15px;line-height:1.65}
.ba-card.bad .quote{color:var(--text-dim)}
.ba-card .note{font-size:12.5px;margin-top:16px;font-style:italic;color:var(--text-faint)}
.ba-card.good .note{color:var(--ok)}

/* comparison bento table */
.compare{max-width:840px;margin:0 auto}
.compare-table{background:var(--bg-card);border-radius:16px;border:1px solid var(--line);overflow:hidden}
.compare-row{display:grid;grid-template-columns:2.2fr 1fr 1fr 1fr;border-bottom:1px solid var(--line)}
.compare-row:last-child{border-bottom:none}
.compare-row.header{background:var(--bg-raised)}
.compare-cell{padding:14px 16px;font-size:13.5px;text-align:center;color:var(--text-faint)}
.compare-cell:first-child{text-align:left;color:var(--text)}
.compare-row.header .compare-cell{font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--text-dim)}
.compare-row.header .compare-cell.us{color:var(--cyan)}
.compare-cell .yes{color:var(--ok);font-weight:600}
.compare-cell .no{color:var(--text-faint)}
.compare-cell.us{background:rgba(34,211,238,.045)}

/* ownership */
.own{max-width:680px;margin:0 auto;text-align:center}
.own h2{font-size:clamp(30px,5vw,50px);margin:16px 0 18px}
.own h2 b{color:var(--ok)}
.own p{font-size:16px;color:var(--text-dim);line-height:1.7}

/* origin */
.origin{max-width:660px;margin:0 auto;text-align:center}
.origin blockquote{font-family:var(--font-display);font-weight:500;font-size:clamp(19px,2.8vw,25px);color:var(--text);line-height:1.55;margin-top:18px}
.origin .attr{font-size:14px;color:var(--text-faint);margin-top:18px}

/* cta */
.cta{text-align:center;padding:110px 24px}
.cta h2{font-size:clamp(28px,4.6vw,46px);margin-bottom:10px}
.cta p{color:var(--text-dim);margin-bottom:30px}

/* footer */
footer{padding:36px 24px;border-top:1px solid var(--line)}
.foot{max-width:var(--max);margin:0 auto;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:14px}
.foot .brand{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-dim)}
.foot .links{display:flex;gap:22px;font-size:13px;color:var(--text-dim)}
.foot .links a:hover,.foot .links button:hover{color:var(--text-dim)}
.foot .links button{background:none;border:none;font-size:13px;color:var(--text-dim)}

/* ---------- modal ---------- */
.modal-overlay{display:none;position:fixed;inset:0;background:rgba(5,5,9,.82);z-index:9999;align-items:center;justify-content:center;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
.modal-overlay.active{display:flex}
.modal{background:var(--bg-card);border:1px solid var(--line-strong);border-radius:18px;padding:40px;max-width:430px;width:90%;text-align:center;position:relative;animation:modalIn var(--dur-base) var(--ease-spring)}
@keyframes modalIn{from{opacity:0;transform:translateY(14px) scale(.97)}to{opacity:1;transform:none}}
.modal h3{font-size:23px;margin-bottom:6px}
.modal p{font-size:14px;color:var(--text-dim);margin-bottom:24px;line-height:1.55}
.modal input{width:100%;padding:14px 16px;border-radius:10px;border:1px solid var(--line-strong);background:var(--bg);color:var(--text);font-size:16px;font-family:var(--font-body);outline:none;margin-bottom:12px;transition:border-color var(--dur-fast)}
.modal input:focus{border-color:var(--indigo)}
.modal .submit{width:100%;padding:14px;border-radius:10px;border:none;background:var(--indigo);color:#fff;font-size:16px;font-weight:600;transition:background var(--dur-fast)}
.modal .submit:hover{background:#7477F5}
.modal .close{position:absolute;top:12px;right:16px;font-size:22px;color:var(--text-faint);background:none;border:none;line-height:1;padding:4px}
.modal .close:hover{color:var(--text)}
.modal .success{color:var(--ok);font-size:16px;font-weight:600;padding:18px 0 6px}
.modal .position{color:var(--text-faint);font-size:13px;margin-top:8px}

/* ---------- responsive ---------- */
@media(max-width:900px){
  .bento{grid-template-columns:repeat(2,1fr)}
  .mech-grid{grid-template-columns:repeat(2,1fr)}
  .teaser-grid{grid-template-columns:1fr}
}
@media(max-width:600px){
  .ba{grid-template-columns:1fr}
  .mech-grid{grid-template-columns:1fr}
  .nav-links{gap:16px}
  .nav-links .hide-m{display:none}
  .hero-lockup .name{font-size:32px}
  .compare-cell{padding:10px 6px;font-size:11.5px}
  .section{padding:72px 20px}
}

/* ---------- reduced motion ---------- */
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
  .rv{opacity:1;transform:none}
  .hero-glow{animation:none}
}