/* ============================================================
   Neuronally Executor — site styles
   Palette & motifs derived from the app interface
   ============================================================ */

:root{
  /* surfaces */
  --bg:        #08080c;
  --bg-2:      #0c0c12;
  --panel:     #111119;
  --panel-2:   #15151f;
  --line:      #20202c;
  --line-soft: #1a1a24;

  /* brand */
  --violet:    #8b5cf6;
  --violet-2:  #a855f7;
  --violet-lo: #6d28d9;
  --violet-glow: rgba(139,92,246,.45);

  /* status */
  --green:     #22c55e;
  --red:       #ef4444;
  --amber:     #f59e0b;

  /* text */
  --ink:       #ececf2;
  --ink-2:     #a6a6b6;
  --ink-3:     #6f6f82;

  /* type */
  --display: "Space Grotesk", system-ui, sans-serif;
  --body:    "Inter", system-ui, sans-serif;
  --mono:    "JetBrains Mono", ui-monospace, monospace;

  --maxw: 1180px;
  --radius: 16px;
  --radius-sm: 10px;
  --ease: cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:
    radial-gradient(900px 500px at 80% -10%, rgba(139,92,246,.10), transparent 60%),
    radial-gradient(700px 500px at 0% 0%, rgba(168,85,247,.06), transparent 55%),
    var(--bg);
  color:var(--ink);
  font-family:var(--body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}

.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- type scale ---------- */
h1,h2,h3,h4{font-family:var(--display);font-weight:600;line-height:1.1;letter-spacing:-.02em}
h1{font-size:clamp(2.1rem,5vw,3.5rem);font-weight:700}
h2{font-size:clamp(1.6rem,3.4vw,2.4rem)}
h3{font-size:1.18rem}
p{color:var(--ink-2)}

/* gradient word helper used inline */
.grad{
  background:linear-gradient(120deg,var(--violet-2),var(--violet));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}

/* ============================================================
   Buttons
   ============================================================ */
.btn{
  --pad-y:13px;--pad-x:22px;
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--display);font-weight:600;font-size:.97rem;
  padding:var(--pad-y) var(--pad-x);
  border-radius:12px;border:1px solid transparent;
  cursor:pointer;transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease),border-color .25s var(--ease);
  color:var(--ink);background:transparent;white-space:nowrap;
}
.btn-lg{--pad-y:16px;--pad-x:30px;font-size:1.04rem}
.btn-sm{--pad-y:9px;--pad-x:16px;font-size:.88rem}

.btn-primary{
  color:#fff;
  background:linear-gradient(135deg,var(--violet-2),var(--violet-lo));
  box-shadow:0 10px 30px -8px var(--violet-glow),inset 0 1px 0 rgba(255,255,255,.18);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 40px -10px var(--violet-glow),inset 0 1px 0 rgba(255,255,255,.25)}
.btn-primary:active{transform:translateY(0)}

.btn-ghost{
  background:rgba(255,255,255,.03);
  border-color:var(--line);
  color:var(--ink);
}
.btn-ghost:hover{border-color:var(--violet);background:rgba(139,92,246,.10);transform:translateY(-2px)}

/* ============================================================
   Top bar
   ============================================================ */
.topbar{
  position:sticky;top:0;z-index:50;
  background:rgba(8,8,12,.72);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line-soft);
}
.topbar-inner{display:flex;align-items:center;gap:24px;height:66px}
.brand{display:flex;align-items:center;gap:11px}
.brand-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:11px;
  background:radial-gradient(circle at 30% 25%,rgba(139,92,246,.35),rgba(139,92,246,.08));
  border:1px solid var(--line)}
.brand-name{font-family:var(--display);font-weight:500;font-size:1.12rem;letter-spacing:-.01em}
.brand-name b{font-weight:700;color:var(--violet-2)}
.brand.small .brand-name{font-size:1.05rem}

.nav{display:flex;gap:28px;margin-left:auto}
.nav a{font-size:.94rem;color:var(--ink-2);transition:color .2s}
.nav a:hover{color:var(--ink)}
.nav-cta{margin-left:4px}

/* ============================================================
   Hero
   ============================================================ */
.hero{position:relative;padding:72px 0 40px;overflow:hidden}
.hero-glow{
  position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(640px 360px at 78% 32%, rgba(139,92,246,.22), transparent 60%),
    radial-gradient(420px 280px at 70% 70%, rgba(168,85,247,.14), transparent 65%);
  filter:saturate(1.1);
}
.hero-grid{position:relative;display:grid;grid-template-columns:1.05fr 1.25fr;gap:56px;align-items:center}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:.78rem;letter-spacing:.02em;
  color:var(--ink-2);background:rgba(139,92,246,.08);
  border:1px solid var(--line);border-radius:999px;padding:6px 13px;margin-bottom:22px;
}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 10px var(--green)}

.hero h1{margin-bottom:18px}
.lede{font-size:1.12rem;color:var(--ink-2);max-width:33em;margin-bottom:30px}

.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:36px}

.hero-meta{display:flex;gap:34px;border-top:1px solid var(--line-soft);padding-top:22px}
.hero-meta li{display:flex;flex-direction:column}
.hero-meta b{font-family:var(--display);font-size:1.18rem;font-weight:700}
.hero-meta span{font-size:.82rem;color:var(--ink-3)}

/* window frame for screenshots */
.window{
  border:1px solid var(--line);border-radius:var(--radius);
  background:var(--panel);overflow:hidden;
  box-shadow:0 40px 90px -30px rgba(0,0,0,.85),0 0 0 1px rgba(139,92,246,.06),0 0 80px -30px var(--violet-glow);
}
.window-bar{display:flex;align-items:center;gap:8px;height:40px;padding:0 14px;
  background:linear-gradient(180deg,#14141d,#0f0f17);border-bottom:1px solid var(--line)}
.tl{width:11px;height:11px;border-radius:50%}
.tl.red{background:#ff5f57}.tl.yellow{background:#febc2e}.tl.green{background:#28c840}
.window-title{margin-left:10px;font-family:var(--mono);font-size:.76rem;color:var(--ink-3)}
.window img{width:100%}

.hero-shot{position:relative}
.hero-shot .window{transform:perspective(1600px) rotateY(-6deg) rotateX(2deg);transition:transform .6s var(--ease)}
.hero-shot .window:hover{transform:perspective(1600px) rotateY(-2deg) rotateX(1deg)}

/* ============================================================
   Trust strip
   ============================================================ */
.strip{border-block:1px solid var(--line-soft);background:rgba(255,255,255,.012)}
.strip-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.strip-item{padding:26px 16px;text-align:center;border-left:1px solid var(--line-soft)}
.strip-item:first-child{border-left:none}
.strip-item b{display:block;font-family:var(--display);font-size:1.55rem;font-weight:700;color:var(--ink)}
.strip-item span{font-size:.82rem;color:var(--ink-3)}

/* ============================================================
   Sections
   ============================================================ */
.section{padding:88px 0}
.section-alt{background:
  linear-gradient(180deg,rgba(139,92,246,.04),transparent 40%),var(--bg-2);
  border-block:1px solid var(--line-soft)}

.sec-head{max-width:620px;margin:0 auto 52px;text-align:center}
.sec-eyebrow{font-family:var(--mono);font-size:.76rem;letter-spacing:.14em;text-transform:uppercase;color:var(--violet-2)}
.sec-head h2{margin:12px 0 12px}
.sec-head p{font-size:1.04rem}

/* cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{
  position:relative;padding:28px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--line);
  transition:transform .3s var(--ease),border-color .3s var(--ease),background .3s var(--ease);
  overflow:hidden;
}
.card::before{content:"";position:absolute;inset:0 0 auto 0;height:2px;
  background:linear-gradient(90deg,var(--violet-2),var(--violet));transform:scaleX(0);transform-origin:left;transition:transform .35s var(--ease)}
.card:hover{transform:translateY(-6px);border-color:rgba(139,92,246,.4);background:var(--panel-2)}
.card:hover::before{transform:scaleX(1)}
.card-ic{display:grid;place-items:center;width:46px;height:46px;border-radius:12px;font-size:1.4rem;
  background:rgba(139,92,246,.10);border:1px solid var(--line);margin-bottom:16px}
.card h3{margin-bottom:8px}
.card p{font-size:.95rem}

/* split / interface showcase */
.split{display:grid;grid-template-columns:1fr 1.15fr;gap:54px;align-items:center}
.split-copy h2{margin:12px 0 16px}
.split-copy>p{margin-bottom:22px}
.split-shot .window{transform:perspective(1600px) rotateY(5deg);transition:transform .6s var(--ease)}
.split-shot .window:hover{transform:perspective(1600px) rotateY(1deg)}

.ticks{display:grid;gap:11px;margin-bottom:26px}
.ticks li{position:relative;padding-left:30px;color:var(--ink-2)}
.ticks li::before{content:"";position:absolute;left:0;top:7px;width:18px;height:18px;border-radius:50%;
  background:radial-gradient(circle at 50% 50%,rgba(34,197,94,.25),transparent 70%);
  box-shadow:inset 0 0 0 1.5px var(--green)}
.ticks li::after{content:"";position:absolute;left:6px;top:11px;width:6px;height:3px;border-left:2px solid var(--green);border-bottom:2px solid var(--green);transform:rotate(-45deg)}
.ticks.compact li{font-size:.95rem}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:s}
.step{position:relative;padding:28px 24px;border-radius:var(--radius);background:var(--panel);border:1px solid var(--line)}
.step-n{font-family:var(--mono);font-size:.92rem;color:var(--violet-2);letter-spacing:.05em}
.step h3{margin:14px 0 8px}
.step p{font-size:.93rem}
.step em{color:var(--ink);font-style:normal;font-weight:600}

/* compatibility */
.compat{display:grid;grid-template-columns:1fr 1fr;gap:20px;max-width:880px;margin:0 auto}
.compat-col{padding:26px 28px;border-radius:var(--radius);background:var(--panel);border:1px solid var(--line)}
.compat-col h3{margin-bottom:14px;color:var(--violet-2)}
.spec{width:100%;border-collapse:collapse}
.spec th,.spec td{text-align:left;padding:11px 0;border-bottom:1px solid var(--line-soft);font-size:.95rem;vertical-align:top}
.spec th{color:var(--ink-3);font-weight:500;width:34%;font-family:var(--mono);font-size:.85rem}
.spec td{color:var(--ink-2)}
.spec tr:last-child th,.spec tr:last-child td{border-bottom:none}

/* download */
.download-card{
  display:grid;grid-template-columns:1.3fr 1fr;gap:30px;align-items:center;
  max-width:920px;margin:0 auto;padding:38px 40px;border-radius:20px;
  background:linear-gradient(135deg,rgba(139,92,246,.12),rgba(168,85,247,.04)),var(--panel);
  border:1px solid rgba(139,92,246,.32);
  box-shadow:0 40px 90px -40px var(--violet-glow);
}
.dl-badge{display:inline-block;font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;
  color:var(--violet-2);background:rgba(139,92,246,.12);border:1px solid var(--line);border-radius:999px;padding:5px 12px;margin-bottom:14px}
.download-card h3{font-size:1.5rem;margin-bottom:18px}
.dl-ver{font-family:var(--mono);font-size:.95rem;color:var(--ink-3);font-weight:400}
.dl-right{display:flex;flex-direction:column;align-items:flex-start;gap:12px}
.dl-note{font-size:.82rem;color:var(--ink-3);font-family:var(--mono)}

/* changelog */
.log{max-width:760px;margin:0 auto;position:relative;padding-left:26px}
.log::before{content:"";position:absolute;left:6px;top:6px;bottom:6px;width:2px;
  background:linear-gradient(180deg,var(--violet),transparent)}
.log-item{position:relative;padding:0 0 34px 22px}
.log-item::before{content:"";position:absolute;left:-26px;top:5px;width:14px;height:14px;border-radius:50%;
  background:var(--bg);border:2px solid var(--violet-2);box-shadow:0 0 12px -2px var(--violet-glow)}
.log-meta{display:flex;align-items:center;gap:12px;margin-bottom:10px;flex-wrap:wrap}
.log-ver{font-family:var(--mono);font-weight:500;color:var(--ink)}
.log-meta time{font-size:.85rem;color:var(--ink-3)}
.tag{font-family:var(--mono);font-size:.7rem;letter-spacing:.06em;text-transform:uppercase;padding:3px 9px;border-radius:999px;border:1px solid var(--line)}
.tag-new{color:var(--green);background:rgba(34,197,94,.10);border-color:rgba(34,197,94,.3)}
.tag-fix{color:var(--amber);background:rgba(245,158,11,.10);border-color:rgba(245,158,11,.3)}
.tag-feat{color:var(--violet-2);background:rgba(139,92,246,.10);border-color:rgba(139,92,246,.3)}
.log-item ul{display:grid;gap:6px}
.log-item ul li{position:relative;padding-left:16px;color:var(--ink-2);font-size:.95rem}
.log-item ul li::before{content:"";position:absolute;left:0;top:10px;width:5px;height:5px;border-radius:50%;background:var(--ink-3)}

/* faq */
.faq{max-width:760px;margin:0 auto;display:grid;gap:12px}
.faq details{border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--panel);overflow:hidden;transition:border-color .25s}
.faq details[open]{border-color:rgba(139,92,246,.35)}
.faq summary{cursor:pointer;list-style:none;padding:18px 22px;font-family:var(--display);font-weight:500;font-size:1.02rem;display:flex;justify-content:space-between;align-items:center;gap:14px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--mono);color:var(--violet-2);font-size:1.3rem;transition:transform .25s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{padding:0 22px 20px;color:var(--ink-2)}
.faq code{font-family:var(--mono);font-size:.88em;background:rgba(139,92,246,.12);padding:2px 6px;border-radius:5px;color:var(--violet-2)}

.more-links{text-align:center;margin-top:34px;font-size:.92rem;color:var(--ink-3)}
.more-links a{color:var(--ink-2);border-bottom:1px solid transparent;transition:.2s}
.more-links a:hover{color:var(--violet-2);border-color:var(--violet-2)}

/* cta */
.cta{padding:90px 0;text-align:center;
  background:radial-gradient(700px 320px at 50% 0%,rgba(139,92,246,.16),transparent 60%),var(--bg-2);
  border-block:1px solid var(--line-soft)}
.cta-inner h2{margin-bottom:12px}
.cta-inner p{margin-bottom:28px;font-size:1.05rem}

/* share */
.share{padding:52px 0;text-align:center}
.share>.wrap>p{font-family:var(--display);color:var(--ink-2);margin-bottom:20px}
.share-row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.sb{font-family:var(--display);font-weight:500;font-size:.9rem;padding:11px 20px;border-radius:10px;border:1px solid var(--line);background:var(--panel);transition:transform .25s var(--ease),border-color .25s,color .25s}
.sb:hover{transform:translateY(-3px)}
.sb.facebook:hover{border-color:#1877f2;color:#5b9bff}
.sb.twitter:hover{border-color:#71767b;color:#fff}
.sb.linkedin:hover{border-color:#0a66c2;color:#4593e6}
.sb.pinterest:hover{border-color:#e60023;color:#ff5871}
.sb.reddit:hover{border-color:#ff4500;color:#ff7a45}

/* footer */
.footer{border-top:1px solid var(--line-soft);padding:56px 0 28px;background:var(--bg-2)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;margin-bottom:36px}
.foot-note{margin-top:14px;font-size:.92rem;max-width:30em}
.footer nav h4{font-family:var(--display);font-size:.95rem;margin-bottom:14px;color:var(--ink)}
.footer nav a{display:block;font-size:.92rem;color:var(--ink-3);padding:5px 0;transition:color .2s}
.footer nav a:hover{color:var(--violet-2)}
.foot-bottom{display:flex;justify-content:space-between;gap:14px;padding-top:24px;border-top:1px solid var(--line-soft);font-size:.84rem;color:var(--ink-3);flex-wrap:wrap}

/* ============================================================
   Reveal on scroll
   ============================================================ */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width:980px){
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-shot .window{transform:none}
  .split{grid-template-columns:1fr;gap:36px}
  .split-shot .window{transform:none}
  .cards{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .download-card{grid-template-columns:1fr;text-align:left}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  .nav{display:none}
  .strip-grid{grid-template-columns:repeat(2,1fr)}
  .strip-item:nth-child(odd){border-left:none}
  .strip-item:nth-child(n+3){border-top:1px solid var(--line-soft)}
  .cards{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .compat{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
  .section{padding:64px 0}
  .hero-meta{gap:22px}
  .foot-bottom{flex-direction:column;gap:6px}
}
@media (max-width:420px){
  .footer-grid{grid-template-columns:1fr}
  .hero-actions .btn{width:100%;justify-content:center}
}

/* ============================================================
   Accessibility
   ============================================================ */
:focus-visible{outline:2px solid var(--violet-2);outline-offset:3px;border-radius:6px}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
  .hero-shot .window,.split-shot .window{transform:none}
}