/* =========================================================================
   ATARS — Landing site design system
   Premium SaaS · glassmorphism · gradient · dark/light
   ========================================================================= */
:root {
  /* brand — five-colour identity, one hue per letter of A·T·A·R·S */
  --blue:#1E88FF;    /* A */
  --amber:#FF9800;   /* T */
  --green:#24E23A;   /* A */
  --violet:#8A2EFF;  /* R */
  --crimson:#FF1E3C; /* S */
  --blue-600:#1565C0; --violet-600:#6A1FD0; --green-600:#16A828;
  --grad: linear-gradient(120deg,#1E88FF 0%,#8A2EFF 52%,#24E23A 100%);
  --grad-soft: linear-gradient(135deg,rgba(30,136,255,.16),rgba(36,226,58,.10));
  /* per-section accent — overridden by [data-accent] on each section */
  --accent:#1E88FF; --accent-rgb:30,136,255;

  /* dark (default) */
  --bg:#0B1020; --bg-2:#0E141B; --surface:#141B2D; --surface-2:#1A2233;
  --border:rgba(148,163,184,.14); --border-strong:rgba(148,163,184,.26);
  --text:#F1F5FB; --muted:#94A3B8; --muted-2:#CBD5E1;
  --glass:rgba(20,27,45,.55); --glass-brd:rgba(148,163,184,.16);
  --shadow:0 20px 50px -20px rgba(0,0,0,.6);
  --ring:rgba(30,136,255,.5);

  --maxw:1180px; --radius:18px; --radius-sm:12px;
  --font-display:'Space Grotesk','Segoe UI',sans-serif;
  --font-body:'Inter',system-ui,sans-serif;
  --font-mono:'IBM Plex Mono',Consolas,monospace;
}
[data-theme="light"]{
  --bg:#FFFFFF; --bg-2:#F4F6FB; --surface:#FFFFFF; --surface-2:#F4F6FB;
  --border:rgba(15,23,42,.10); --border-strong:rgba(15,23,42,.18);
  --text:#0B1020; --muted:#64748B; --muted-2:#475569;
  --glass:rgba(255,255,255,.7); --glass-brd:rgba(15,23,42,.08);
  --shadow:0 20px 50px -24px rgba(30,41,90,.25);
}

/* ── per-section signature accent ── */
[data-accent="blue"]   {--accent:#1E88FF;--accent-rgb:30,136,255}
[data-accent="amber"]  {--accent:#FF9800;--accent-rgb:255,152,0}
[data-accent="green"]  {--accent:#24E23A;--accent-rgb:36,226,58}
[data-accent="violet"] {--accent:#8A2EFF;--accent-rgb:138,46,255}
[data-accent="crimson"]{--accent:#FF1E3C;--accent-rgb:255,30,60}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-body);background:var(--bg);color:var(--text);
  line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
/* ambient gradient blobs */
body::before{
  content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(50rem 30rem at 12% -8%,rgba(30,136,255,.16),transparent 60%),
    radial-gradient(46rem 30rem at 100% 0%,rgba(36,226,58,.12),transparent 55%),
    radial-gradient(60rem 40rem at 50% 120%,rgba(138,46,255,.12),transparent 60%);
}
a{color:inherit;text-decoration:none}
code{font-family:var(--font-mono);font-size:.86em;background:rgba(var(--accent-rgb),.12);
  border:1px solid rgba(var(--accent-rgb),.22);color:var(--accent);padding:.06em .4em;border-radius:6px}
img,svg{max-width:100%;display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 22px}
/* clip sideways reveal transforms so they never widen the page (keeps sticky working) */
section,header.hero{padding:92px 0;position:relative;overflow-x:clip}
/* keep anchored sections/headings clear of the sticky nav */
section[id],[id]{scroll-margin-top:80px}
.eyebrow{
  font-family:var(--font-mono);font-size:.74rem;letter-spacing:.22em;text-transform:uppercase;
  color:var(--accent);margin-bottom:14px;display:inline-flex;align-items:center;gap:8px;
}
.eyebrow::before{content:"// "}
/* animated heading underline — draws out as the heading enters */
.section-head h2{position:relative;display:inline-block}
.section-head h2::after{content:"";position:absolute;left:50%;bottom:-12px;height:3px;width:0;
  border-radius:3px;background:var(--accent);transform:translateX(-50%);
  transition:width .7s cubic-bezier(.2,.7,.2,1) .25s}
.reveal.in .section-head h2::after,.section-head.reveal.in h2::after{width:64px}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:700;line-height:1.12;letter-spacing:-.02em}
h2{font-size:clamp(1.8rem,3.6vw,2.7rem);margin-bottom:14px}
h3{font-size:1.18rem}
.section-head{max-width:680px;margin:0 auto 52px;text-align:center}
.section-head p{color:var(--muted);font-size:1.05rem;margin-top:6px}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;font-weight:600;font-size:.95rem;
  padding:13px 24px;border-radius:999px;border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .25s ease,background .25s ease;white-space:nowrap;
}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 12px 30px -10px rgba(30,136,255,.7)}
.btn-primary:hover{box-shadow:0 18px 40px -10px rgba(30,136,255,.85)}
.btn-ghost{background:var(--glass);color:var(--text);border-color:var(--border-strong);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}
.btn-ghost:hover{border-color:var(--blue)}
.btn-sm{padding:9px 16px;font-size:.85rem}

/* ---------- nav ---------- */
.nav{position:sticky;top:0;z-index:50;transition:background .3s,border-color .3s}
.nav-inner{
  max-width:var(--maxw);margin:0 auto;display:flex;align-items:center;gap:18px;
  padding:14px 22px;
}
.nav.scrolled{background:var(--glass);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border-bottom:1px solid var(--glass-brd)}
.brand{display:flex;align-items:center;gap:11px;font-family:var(--font-display);font-weight:700;font-size:1.16rem;letter-spacing:.02em}
.brand .logo{width:34px;height:34px;border-radius:9px;flex:0 0 auto}
/* per-letter brand wordmark — ensure each letter keeps its own colour */
.wm span{-webkit-text-fill-color:currentColor}
.nav-links{display:flex;gap:4px;margin-left:18px}
.nav-links a{padding:8px 13px;border-radius:9px;color:var(--muted);font-size:.92rem;font-weight:500;transition:.2s}
.nav-links a:hover{color:var(--text);background:var(--surface-2)}
.nav-links a.active{color:var(--text)}
.nav-links a.active::after{content:"";display:block;height:2px;margin-top:5px;border-radius:2px;background:var(--grad)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.theme-toggle{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--border-strong);
  background:var(--surface);color:var(--text);cursor:pointer;display:grid;place-items:center;font-size:1rem;transition:.2s;
}
.theme-toggle:hover{border-color:var(--blue)}
.nav-burger{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--border-strong);background:var(--surface);color:var(--text);font-size:1.2rem;cursor:pointer}

/* ---------- hero ---------- */
.hero{padding:74px 0 60px;text-align:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;padding:7px 15px;border-radius:999px;
  background:var(--glass);border:1px solid var(--glass-brd);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  font-size:.8rem;color:var(--muted-2);margin-bottom:26px;
}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 12px var(--green)}
.hero h1{font-size:clamp(2.4rem,6vw,4.4rem);max-width:14ch;margin:0 auto 20px}
.hero .sub{font-size:clamp(1.05rem,2vw,1.28rem);color:var(--muted-2);max-width:62ch;margin:0 auto 34px}
.hero-cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.hero-note{margin-top:18px;font-size:.85rem;color:var(--muted);font-family:var(--font-mono)}
.hero-visual{margin:56px auto 0;max-width:980px}
.window{
  border-radius:16px;border:1px solid var(--border-strong);background:var(--surface);
  box-shadow:var(--shadow);overflow:hidden;
}
.window-bar{display:flex;align-items:center;gap:7px;padding:12px 16px;border-bottom:1px solid var(--border);background:var(--surface-2)}
.window-bar i{width:11px;height:11px;border-radius:50%;display:inline-block}
.window-bar .r{background:#FF5F57}.window-bar .y{background:#FEBC2E}.window-bar .g{background:#28C840}
.window-bar span{margin-left:12px;font-family:var(--font-mono);font-size:.78rem;color:var(--muted);
  min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.window-body{padding:0;background:var(--bg-2)}
.window-body svg{width:100%;height:auto;display:block}

/* ---------- cards / grids ---------- */
.grid{display:grid;gap:20px}
.cols-2{grid-template-columns:repeat(2,1fr)}
.cols-3{grid-template-columns:repeat(3,1fr)}
.cols-4{grid-template-columns:repeat(4,1fr)}
.card{
  background:var(--glass);border:1px solid var(--glass-brd);border-radius:var(--radius);
  padding:26px;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);transition:transform .25s,border-color .25s,box-shadow .25s;
  position:relative;overflow:hidden;
}
.card:hover{transform:translateY(-5px);border-color:var(--border-strong);box-shadow:var(--shadow)}
.card .ico{
  width:46px;height:46px;border-radius:12px;display:grid;place-items:center;font-size:1.35rem;
  background:var(--grad-soft);border:1px solid var(--glass-brd);margin-bottom:16px;
}
.card h3{margin-bottom:8px}
.card p{color:var(--muted);font-size:.95rem}
.usecase-flow{margin-top:14px!important;font-family:var(--font-mono);font-size:.78rem;
  color:var(--accent);background:rgba(var(--accent-rgb),.10);border:1px solid rgba(var(--accent-rgb),.25);
  border-radius:8px;padding:7px 11px;display:inline-block}
.card-link{position:relative}
.card-link::after{
  content:"";position:absolute;inset:0;border-radius:var(--radius);
  background:radial-gradient(40rem 20rem at var(--mx,50%) var(--my,0%),rgba(var(--accent-rgb),.14),transparent 60%);
  opacity:0;transition:opacity .3s;pointer-events:none;
}
.card-link:hover::after{opacity:1}
/* gradient rim that ignites on hover */
.card-link::before{
  content:"";position:absolute;inset:0;border-radius:var(--radius);padding:1px;pointer-events:none;
  background:linear-gradient(130deg,rgba(var(--accent-rgb),.7),transparent 55%);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:opacity .3s}
.card-link:hover::before{opacity:1}
.card-link:hover{border-color:rgba(var(--accent-rgb),.4)}

/* feature list pills */
.pills{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.pill{
  display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border-radius:999px;
  background:var(--surface);border:1px solid var(--border);font-size:.9rem;font-weight:500;color:var(--muted-2);
  transition:.2s;
}
.pill:hover{border-color:var(--accent);color:var(--text);transform:translateY(-2px);box-shadow:0 8px 22px -12px rgba(var(--accent-rgb),.8)}
.pill b{color:var(--text);font-family:var(--font-mono);font-size:.82rem}

/* workflow */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:step}
.flow .step{
  background:var(--glass);border:1px solid var(--glass-brd);border-radius:var(--radius);padding:22px;position:relative;
}
.flow .step .n{font-family:var(--font-mono);font-size:.78rem;color:var(--accent);margin-bottom:10px;letter-spacing:.1em}
.flow .step h4{font-family:var(--font-display);font-size:1.02rem;margin-bottom:6px}
.flow .step p{font-size:.88rem;color:var(--muted)}
.flow .step::after{content:"";position:absolute;top:50%;right:-12px;width:14px;height:2px;background:var(--accent);opacity:.5}
.flow .step:nth-child(4n)::after{display:none}
@media (max-width:980px){.flow .step:nth-child(2n)::after{display:none}}
@media (max-width:680px){.flow .step::after{display:none}}

/* stats band */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;text-align:center}
.stats .stat .num{font-family:var(--font-display);font-size:2.4rem;font-weight:700}
.stats .stat .lbl{color:var(--muted);font-size:.9rem}

/* split / formula */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.formula-card{
  background:var(--surface);border:1px solid var(--border-strong);border-radius:var(--radius);
  padding:30px;box-shadow:var(--shadow);
}
.formula-card .eq{font-family:var(--font-mono);font-size:1.05rem;color:var(--muted-2);line-height:2.1;overflow-x:auto}
.formula-card .eq b{color:var(--green)}

/* FAQ accordion */
.faq-item{border:1px solid var(--border);border-radius:var(--radius-sm);margin-bottom:12px;background:var(--glass);overflow:hidden}
.faq-q{width:100%;text-align:left;background:none;border:none;color:var(--text);font-family:var(--font-display);
  font-size:1.02rem;font-weight:600;padding:18px 20px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:14px}
.faq-q .chev{transition:transform .25s;color:var(--blue);flex:0 0 auto}
.faq-item.open .chev{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;color:var(--muted);font-size:.95rem}
.faq-a div{padding:0 20px 18px}

/* testimonials */
.quote{background:var(--glass);border:1px solid var(--glass-brd);border-radius:var(--radius);padding:26px}
.quote p{font-size:1rem;color:var(--muted-2);margin-bottom:16px}
.quote .who{display:flex;align-items:center;gap:12px}
.quote .av{width:40px;height:40px;border-radius:50%;background:var(--grad);display:grid;place-items:center;color:#fff;font-weight:700;font-family:var(--font-display)}
.quote .who b{display:block;font-size:.92rem}
.quote .who span{font-size:.8rem;color:var(--muted)}

/* pricing */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:start}
.plan{background:var(--glass);border:1px solid var(--glass-brd);border-radius:var(--radius);padding:30px;position:relative}
.plan.featured{border-color:var(--blue);box-shadow:0 0 0 1px var(--blue),var(--shadow)}
.plan .tag{position:absolute;top:-12px;right:22px;background:var(--grad);color:#fff;font-size:.72rem;font-weight:600;padding:5px 12px;border-radius:999px}
.plan h3{font-size:1.2rem}
.plan .price{font-family:var(--font-display);font-size:2.6rem;font-weight:700;margin:8px 0 2px}
.plan .price small{font-size:.95rem;color:var(--muted);font-weight:400}
.plan ul{list-style:none;margin:20px 0;display:grid;gap:11px}
.plan li{font-size:.92rem;color:var(--muted-2);display:flex;gap:10px;align-items:flex-start}
.plan li::before{content:"✓";color:var(--green);font-weight:700;flex:0 0 auto}
/* every plan-card button spans the card and sits at its bottom edge */
.plan .btn{width:100%;justify-content:center;margin-top:auto}

.plan-tagline{color:var(--muted);font-size:.9rem;margin-bottom:2px}

/* ── Free / Paid tab switcher ── */
.ptabs{position:relative;display:inline-flex;gap:4px;margin:0 auto 38px;padding:5px;
  background:var(--glass);border:1px solid var(--glass-brd);border-radius:999px;
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);left:50%;transform:translateX(-50%)}
.ptab{position:relative;z-index:1;border:none;background:none;cursor:pointer;
  font-family:var(--font-display);font-weight:600;font-size:.95rem;color:var(--muted);
  padding:10px 30px;border-radius:999px;display:inline-flex;align-items:center;gap:8px;transition:color .25s}
.ptab.is-active{color:#fff}
.ptab-soon{font-family:var(--font-mono);font-size:.6rem;letter-spacing:.06em;text-transform:uppercase;
  padding:2px 7px;border-radius:999px;background:rgba(148,163,184,.18);color:var(--muted-2)}
.ptab.is-active .ptab-soon{background:rgba(255,255,255,.22);color:#fff}
.ptab-ind{position:absolute;top:5px;bottom:5px;left:5px;width:calc(50% - 5px);border-radius:999px;
  background:var(--grad);box-shadow:0 8px 22px -8px rgba(30,136,255,.8);
  transition:transform .35s cubic-bezier(.4,1.3,.5,1);z-index:0}
.ptabs[data-active="paid"] .ptab-ind{transform:translateX(100%)}

/* panels */
.ppanel{display:none;animation:panelIn .4s ease}
.ppanel.is-active{display:block}
@keyframes panelIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

/* Free Access — prominent hero card */
.free-access{max-width:480px;margin:0 auto}
.plan.free-plan{border-color:var(--blue);box-shadow:0 0 0 1px var(--blue),var(--shadow)}
.plan.free-plan .price{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.plan.free-plan .price small{-webkit-text-fill-color:var(--muted);font-size:.78rem}
.free-feats li{font-size:.93rem}
.free-note{color:var(--muted);font-size:.8rem;margin-top:14px;line-height:1.5}

/* paid plans */
.paid-banner{max-width:760px;margin:0 auto 26px;text-align:center;font-size:.92rem;color:var(--muted-2);
  background:var(--grad-soft);border:1px solid var(--glass-brd);border-radius:14px;padding:14px 20px}
.paid-banner b{color:var(--text)}
.paid-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;align-items:stretch}
.plan.paidcard{display:flex;flex-direction:column;position:relative}
.plan.paidcard .price{font-size:2.1rem;color:var(--text)}
.plan.paidcard .price small{font-size:.8rem}
.plan.paidcard.featured{border-color:var(--blue);box-shadow:0 0 0 1px var(--blue),var(--shadow);
  transform:translateY(-6px)}
.plan-feats{list-style:none;margin:16px 0 20px;display:grid;gap:9px;flex:1 1 auto}
.plan-feats li{font-size:.86rem;color:var(--muted-2);display:flex;gap:9px;align-items:flex-start}
.plan-feats li::before{content:"✓";color:var(--green);font-weight:700;flex:0 0 auto}
.soon-tag{position:absolute;top:-11px;right:18px;background:var(--surface-2);
  border:1px solid var(--border-strong);color:var(--muted);font-family:var(--font-mono);
  font-size:.64rem;letter-spacing:.06em;text-transform:uppercase;padding:4px 10px;border-radius:999px}
.soon-tag.best{background:rgba(36,226,58,.14);border-color:rgba(36,226,58,.4);color:var(--green)}
.waitlist-btn{width:100%;justify-content:center;margin-top:auto}
@media (max-width:980px){.paid-grid{grid-template-columns:repeat(2,1fr)}
  .plan.paidcard.featured{transform:none}}
@media (max-width:480px){
  .ptab{padding:9px 24px;font-size:.9rem}
  .paid-grid{grid-template-columns:1fr;max-width:380px;margin:0 auto}
}

/* CTA band */
.cta-band{background:var(--grad-soft);border:1px solid var(--glass-brd);border-radius:24px;padding:56px;text-align:center;margin:0 22px;max-width:var(--maxw)}
@media (min-width:1224px){.cta-band{margin:0 auto}}
.cta-band h2{margin-bottom:10px}
.cta-band p{color:var(--muted-2);max-width:52ch;margin:0 auto 26px}

/* about developer */
.dev{display:grid;grid-template-columns:auto 1fr;gap:28px;align-items:center;background:var(--glass);
  border:1px solid var(--glass-brd);border-radius:var(--radius);padding:32px}
.dev .avatar{width:96px;height:96px;border-radius:20px;background:var(--grad);display:grid;place-items:center;
  font-family:var(--font-display);font-size:2.4rem;font-weight:700;color:#fff}

/* footer */
.footer{border-top:1px solid var(--border);padding:56px 0 30px;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1fr;gap:30px}
.footer h5{font-family:var(--font-display);font-size:.92rem;margin-bottom:14px;color:var(--text)}
.footer a{display:block;color:var(--muted);font-size:.9rem;padding:5px 0;transition:.2s}
.footer a:hover{color:var(--blue)}
.footer .tagline{color:var(--muted);font-size:.9rem;margin:14px 0;max-width:34ch}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;gap:16px;
  margin-top:40px;padding-top:24px;border-top:1px solid var(--border);color:var(--muted);font-size:.84rem;flex-wrap:wrap}
.flag{font-size:1rem}

/* doc / legal pages */
.doc{max-width:820px;margin:0 auto;padding:54px 22px 80px}
.doc-hero{text-align:center;margin-bottom:48px}
.doc-hero h1{font-size:clamp(2rem,4.5vw,3rem);margin-bottom:10px}
.doc-hero .meta{font-family:var(--font-mono);font-size:.82rem;color:var(--muted)}
.doc h2{font-size:1.5rem;margin:38px 0 12px;scroll-margin-top:90px}
.doc h3{font-size:1.12rem;margin:24px 0 8px}
.doc p,.doc li{color:var(--muted-2);font-size:1rem;margin-bottom:12px}
.doc ul,.doc ol{padding-left:22px;margin-bottom:14px}
.doc li{margin-bottom:7px}
.doc strong{color:var(--text)}
.doc a{color:var(--blue);text-decoration:underline;text-underline-offset:3px}
.doc .callout{background:var(--glass);border:1px solid var(--glass-brd);border-left:3px solid var(--blue);
  border-radius:10px;padding:16px 18px;margin:18px 0}
.doc .callout p:last-child{margin-bottom:0}
.toc{background:var(--glass);border:1px solid var(--glass-brd);border-radius:var(--radius);padding:20px 24px;margin-bottom:36px}
.toc h4{font-family:var(--font-display);font-size:.92rem;margin-bottom:10px;color:var(--muted)}
.toc a{color:var(--muted-2);font-size:.92rem;padding:4px 0;display:block;text-decoration:none}
.toc a:hover{color:var(--blue)}

/* changelog */
.cl-entry{border-left:2px solid var(--border-strong);padding:0 0 30px 26px;position:relative;margin-left:8px}
.cl-entry::before{content:"";position:absolute;left:-7px;top:4px;width:12px;height:12px;border-radius:50%;background:var(--grad);border:2px solid var(--bg)}
.cl-entry .ver{font-family:var(--font-display);font-weight:700;font-size:1.15rem}
.cl-entry .date{font-family:var(--font-mono);font-size:.78rem;color:var(--muted);margin-bottom:10px}
.cl-entry .tagx{display:inline-block;font-size:.7rem;font-family:var(--font-mono);padding:2px 8px;border-radius:6px;margin-right:6px;margin-bottom:6px}
.tagx.new{background:rgba(36,226,58,.15);color:var(--green)}
.tagx.fix{background:rgba(138,46,255,.15);color:#C9A6FF}
.tagx.imp{background:rgba(30,136,255,.15);color:#90CAF9}

/* contact form */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.field{margin-bottom:16px}
.field label{display:block;font-size:.85rem;color:var(--muted-2);margin-bottom:6px;font-weight:500}
.field input,.field textarea,.field select{
  width:100%;padding:12px 14px;border-radius:10px;border:1px solid var(--border-strong);
  background:var(--surface);color:var(--text);font-family:var(--font-body);font-size:.95rem;
}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px var(--ring)}

/* reveal animation */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:980px){
  .cols-4,.cols-3{grid-template-columns:repeat(2,1fr)}
  .flow,.stats{grid-template-columns:repeat(2,1fr)}
  .split,.contact-grid{grid-template-columns:1fr;gap:30px}
  .price-grid{grid-template-columns:1fr;max-width:440px;margin:0 auto}
  .footer-grid{grid-template-columns:1fr 1fr}
}
/* collapse nav to a burger before the links start crowding the CTA */
@media (max-width:880px){
  .nav-links{display:none}
  .nav-burger{display:grid;place-items:center}
  .nav.open .nav-links{
    display:flex;position:absolute;top:64px;left:12px;right:12px;flex-direction:column;
    background:var(--surface);border:1px solid var(--border-strong);border-radius:14px;padding:10px;box-shadow:var(--shadow);z-index:55;
  }
  .nav.open .nav-links a{padding:11px 14px;font-size:1rem}
}
@media (max-width:680px){
  section{padding:64px 0}
  .cols-3,.cols-2{grid-template-columns:1fr}
  .dev{grid-template-columns:1fr;text-align:center}
  .dev .avatar{margin:0 auto}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cta-band{padding:38px 22px}
  .stats{grid-template-columns:repeat(2,1fr)}
  /* iOS zooms into any focused field under 16px — keep form fields at 16px */
  .field input,.field textarea,.field select{font-size:1rem}
}
@media (max-width:480px){
  .container{padding:0 16px}
  .nav-inner{padding:12px 14px;gap:10px}
  .nav-right{gap:8px}
  .theme-toggle,.nav-burger{width:36px;height:36px}
  .nav-right .btn-sm{padding:8px 13px;font-size:.82rem}
  .hero{padding:48px 0 40px}
  .hero-badge{font-size:.72rem;padding:6px 12px}
  .hero-cta .btn{width:100%;justify-content:center}
  /* long button labels must wrap, never overflow a narrow screen */
  .btn{white-space:normal;text-align:center}
  .flow{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr);gap:14px}
  .stats .stat .num{font-size:1.9rem}
  .cta-band{padding:32px 18px;margin:0 16px}
  .card{padding:22px}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
/* ultra-small phones: keep the nav on one line (logo stays, wordmark hides) */
@media (max-width:380px){
  .brand .wm{display:none}
  .nav-right .btn-sm{padding:8px 10px;font-size:.78rem}
}

/* =========================================================================
   3D + MOTION LAYER  (progressive enhancement — degrades gracefully)
   ========================================================================= */

/* scroll progress bar */
.scroll-progress{position:fixed;top:0;left:0;height:3px;width:100%;transform:scaleX(0);transform-origin:0 50%;
  background:var(--grad);z-index:60;box-shadow:0 0 14px rgba(30,136,255,.6);will-change:transform}

/* scene rail — vertical section dots (desktop only) */
.scene-rail{position:fixed;right:20px;top:50%;transform:translateY(-50%);z-index:55;
  display:flex;flex-direction:column;gap:14px;align-items:center}
.scene-rail button{width:11px;height:11px;border-radius:50%;border:1px solid var(--border-strong);
  background:var(--surface);cursor:pointer;padding:0;transition:transform .25s,background .25s,border-color .25s}
.scene-rail button:hover{transform:scale(1.25);border-color:var(--accent)}
.scene-rail button.active{background:var(--grad);border-color:transparent;transform:scale(1.3);
  box-shadow:0 0 12px rgba(var(--accent-rgb),.7)}
/* hide the rail whenever it would overlap the content column */
@media (max-width:1279px){.scene-rail{display:none}}

/* brand intro overlay (first load, skippable) */
.brand-intro{position:fixed;inset:0;z-index:200;display:grid;place-items:center;background:var(--bg);
  transition:opacity .6s ease,visibility .6s}
.brand-intro.done{opacity:0;visibility:hidden}
.brand-intro .mark{width:96px;height:96px;border-radius:22px;animation:introPop .9s cubic-bezier(.2,.7,.2,1) both}
.brand-intro .word{margin-top:18px;font-family:var(--font-display);font-weight:700;font-size:1.6rem;letter-spacing:.04em;
  opacity:0;animation:introFade .6s ease .45s forwards}
.brand-intro .skip{position:absolute;bottom:28px;font-family:var(--font-mono);font-size:.78rem;color:var(--muted);
  background:none;border:none;cursor:pointer}
@keyframes introPop{0%{opacity:0;transform:scale(.6) rotate(-8deg)}60%{opacity:1}100%{opacity:1;transform:none}}
@keyframes introFade{to{opacity:1}}

/* living aurora background (injected by JS) — hue shifts to each section's accent */
.aurora{position:fixed;inset:0;z-index:-1;pointer-events:none;overflow:hidden;
  filter:hue-rotate(var(--aur-hue,0deg));transition:filter 1.1s ease}
.aurora .orb{position:absolute;border-radius:50%;filter:blur(70px);opacity:.5;will-change:transform}
.aurora .orb.a{width:42vw;height:42vw;left:-8vw;top:-10vh;background:radial-gradient(circle,rgba(30,136,255,.55),transparent 65%);animation:floatA 22s ease-in-out infinite}
.aurora .orb.b{width:38vw;height:38vw;right:-6vw;top:8vh;background:radial-gradient(circle,rgba(36,226,58,.42),transparent 65%);animation:floatB 26s ease-in-out infinite}
.aurora .orb.c{width:46vw;height:46vw;left:30vw;bottom:-22vh;background:radial-gradient(circle,rgba(138,46,255,.4),transparent 65%);animation:floatC 30s ease-in-out infinite}
@keyframes floatA{0%,100%{transform:translate3d(0,0,0) scale(1)}50%{transform:translate3d(6vw,5vh,0) scale(1.12)}}
@keyframes floatB{0%,100%{transform:translate3d(0,0,0) scale(1)}50%{transform:translate3d(-5vw,7vh,0) scale(1.08)}}
@keyframes floatC{0%,100%{transform:translate3d(0,0,0) scale(1)}50%{transform:translate3d(4vw,-6vh,0) scale(1.15)}}

/* 3D cursor tilt — applied to .card, .plan, .formula-card, hero window via JS */
.tilt3d{transform-style:preserve-3d;transition:transform .25s cubic-bezier(.2,.7,.2,1),box-shadow .25s,border-color .25s;
  will-change:transform}
.tilt3d.is-tilting{transition:box-shadow .25s,border-color .25s}
/* keep card's existing hover-lift but let tilt drive rotation via vars */
.card.tilt3d:hover,.plan.tilt3d:hover{transform:perspective(900px) rotateX(var(--ry,0deg)) rotateY(var(--rx,0deg)) translateY(-5px)}
.card.tilt3d .ico,.card.tilt3d h3{transform:translateZ(28px)}
.card.tilt3d p{transform:translateZ(14px)}
.card.tilt3d .ico,.card.tilt3d h3,.card.tilt3d p{transition:transform .25s cubic-bezier(.2,.7,.2,1)}

/* hero 3D stage */
.hero-visual{perspective:1400px}
.hero-visual .window{transform:perspective(1400px) rotateX(var(--hy,7deg)) rotateY(var(--hx,0deg));
  transition:transform .3s cubic-bezier(.2,.7,.2,1);transform-style:preserve-3d;will-change:transform}
.hero-visual .window::after{content:"";position:absolute;inset:0;border-radius:16px;pointer-events:none;
  background:linear-gradient(120deg,rgba(255,255,255,.10),transparent 38%);opacity:.7}

/* animated entrance variants (set via data-rv on .reveal) — "every scroll a new look" */
.reveal{transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1),filter .7s ease,clip-path .7s cubic-bezier(.2,.7,.2,1)}
.reveal[data-rv="left"]{transform:translateX(-44px)}
.reveal[data-rv="right"]{transform:translateX(44px)}
.reveal[data-rv="scale"]{transform:scale(.9)}
.reveal[data-rv="swing-l"]{transform:perspective(1200px) rotateY(14deg) translateX(-40px);transform-origin:left center}
.reveal[data-rv="swing-r"]{transform:perspective(1200px) rotateY(-14deg) translateX(40px);transform-origin:right center}
.reveal[data-rv="blur"]{filter:blur(14px);transform:translateY(16px)}
.reveal[data-rv="wipe"]{clip-path:inset(0 0 100% 0);transform:none}
.reveal[data-rv].in{transform:none;filter:none;clip-path:inset(0 0 0 0)}
/* stagger children */
.stagger > *{opacity:0;transform:translateY(22px);transition:opacity .55s ease,transform .55s cubic-bezier(.2,.7,.2,1)}
.stagger.in > *{opacity:1;transform:none}
.stagger.in > *:nth-child(1){transition-delay:.04s}
.stagger.in > *:nth-child(2){transition-delay:.10s}
.stagger.in > *:nth-child(3){transition-delay:.16s}
.stagger.in > *:nth-child(4){transition-delay:.22s}
.stagger.in > *:nth-child(5){transition-delay:.28s}
.stagger.in > *:nth-child(6){transition-delay:.34s}
.stagger.in > *:nth-child(7){transition-delay:.40s}
.stagger.in > *:nth-child(8){transition-delay:.46s}
.stagger.in > *:nth-child(9){transition-delay:.52s}

/* animated gradient shimmer on key gradient text */
.grad-text.shimmer{background:linear-gradient(100deg,#1E88FF,#8A2EFF,#24E23A,#8A2EFF,#1E88FF);
  background-size:220% auto;-webkit-background-clip:text;background-clip:text;color:transparent;
  animation:shimmer 6s linear infinite}
@keyframes shimmer{to{background-position:220% center}}

/* hero forecast line draw-in */
.hero-visual svg path[stroke]{stroke-dasharray:1400;stroke-dashoffset:1400;animation:draw 2.2s 0.3s ease forwards}
@keyframes draw{to{stroke-dashoffset:0}}

/* badge live dot pulse */
.hero-badge .dot{animation:pulseDot 2.2s ease-in-out infinite}
@keyframes pulseDot{0%,100%{box-shadow:0 0 0 0 rgba(36,226,58,.55)}50%{box-shadow:0 0 0 7px rgba(36,226,58,0)}}

/* magnetic button wrapper */
.btn{will-change:transform}

/* float animation utility (formula card etc.) */
.floaty{animation:floaty 7s ease-in-out infinite}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}

/* touch / coarse pointers: disable 3D tilt (keep flat hover) */
@media (hover:none),(pointer:coarse){
  .card.tilt3d:hover,.plan.tilt3d:hover{transform:translateY(-4px)}
  .hero-visual .window{transform:none!important}
  .card.tilt3d .ico,.card.tilt3d h3,.card.tilt3d p{transform:none!important}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;animation-iteration-count:1!important;transition:none!important}
  .reveal,.reveal[data-rv],.stagger>*{opacity:1!important;transform:none!important;filter:none!important;clip-path:none!important}
  .section-head h2::after{width:64px!important}
  .aurora,.scroll-progress,.scene-rail,.brand-intro{display:none!important}
  .hero-visual .window{transform:none!important}
  .hero-visual svg path[stroke]{stroke-dashoffset:0!important}
}

/* =========================================================================
   UX UTILITIES — back-to-top, cookie banner, accessibility
   ========================================================================= */

/* keyboard focus — visible ring on every interactive element */
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,
.btn:focus-visible,.faq-q:focus-visible{
  outline:2px solid var(--green);outline-offset:3px;border-radius:8px;
}
:focus:not(:focus-visible){outline:none}

/* skip-to-content link for screen-reader / keyboard users */
.skip-link{position:fixed;top:-60px;left:16px;z-index:120;background:var(--blue);color:#fff;
  padding:10px 16px;border-radius:0 0 10px 10px;font-weight:600;font-size:.9rem;transition:top .2s}
.skip-link:focus{top:0}

/* back-to-top button */
.to-top{position:fixed;right:22px;bottom:22px;z-index:55;width:46px;height:46px;border-radius:14px;
  display:grid;place-items:center;cursor:pointer;border:1px solid var(--border-strong);
  background:var(--glass);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);color:var(--text);font-size:1.1rem;
  box-shadow:var(--shadow);opacity:0;transform:translateY(14px) scale(.9);pointer-events:none;
  transition:opacity .25s,transform .25s,border-color .25s}
.to-top.show{opacity:1;transform:none;pointer-events:auto}
.to-top:hover{border-color:var(--blue);transform:translateY(-3px)}

/* cookie consent banner */
.cookie{position:fixed;left:16px;right:16px;bottom:16px;z-index:80;margin:0 auto;max-width:560px;
  background:var(--surface);border:1px solid var(--border-strong);border-radius:16px;padding:18px 20px;
  box-shadow:var(--shadow);display:flex;gap:16px;align-items:center;flex-wrap:wrap;
  transform:translateY(140%);transition:transform .4s cubic-bezier(.2,.7,.2,1)}
.cookie.show{transform:none}
.cookie p{font-size:.88rem;color:var(--muted-2);flex:1 1 240px;margin:0;line-height:1.5}
.cookie p a{color:var(--blue);text-decoration:underline;text-underline-offset:2px}
.cookie .cookie-actions{display:flex;gap:10px;flex:0 0 auto}
.cookie .btn-sm{padding:8px 16px}
@media (max-width:480px){
  .to-top{right:14px;bottom:14px}
  .cookie{padding:16px;flex-direction:column;align-items:stretch}
  /* in column direction flex-basis becomes HEIGHT — reset it or the text
     block reserves 240px of empty space */
  .cookie p{flex:0 0 auto}
  .cookie .cookie-actions{justify-content:flex-end}
}