/* Nimrtech demo engine — shared base. Each demo sets the tokens below in its own <style>. */
:root{
  --bg:#fff; --surface:#f5f5f5; --ink:#111; --muted:color-mix(in srgb,var(--ink) 62%,var(--bg)); --accent:#2F8FFF; --accent2:#999;
  --on-accent:#fff; --rule:color-mix(in srgb,var(--ink) 14%,var(--bg));
  --display:system-ui,sans-serif; --body:system-ui,sans-serif;
  --radius:14px; --max:1200px; --gutter:clamp(16px,4vw,40px);
  --ease:cubic-bezier(.2,.7,.2,1);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--body);font-size:17px;line-height:1.55;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,video,canvas{max-width:100%;display:block}
img{height:auto}
a{color:inherit}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{font-family:var(--display);line-height:1.05;margin:0;text-wrap:balance}
p{margin:0}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
.wrap{max-width:var(--max);margin-inline:auto;padding-inline:var(--gutter)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:0;z-index:200;background:var(--accent);color:var(--on-accent);padding:8px 12px}
.skip:focus{left:8px;top:40px}

/* demo bar (injected) */
.nd-bar{position:relative;z-index:120;display:flex;gap:12px;align-items:center;justify-content:center;flex-wrap:wrap;padding:7px 14px;background:#0B1626;color:#E6EDF6;font:500 12.5px/1.3 system-ui,-apple-system,"Segoe UI",sans-serif;text-align:center}
.nd-bar b{font-weight:700;color:#fff}
.nd-bar a{color:#8CC2FF;text-decoration:none;font-weight:600;white-space:nowrap}
.nd-bar a:hover{text-decoration:underline}
.nd-bar .nd-dot{width:7px;height:7px;border-radius:50%;background:#5CC39B;display:inline-block;margin-right:6px;vertical-align:1px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 20px;border-radius:999px;border:1px solid transparent;background:var(--accent);color:var(--on-accent);font-weight:600;text-decoration:none;cursor:pointer;line-height:1.15;transition:transform .2s var(--ease),background .2s,box-shadow .2s}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn.ghost{background:transparent;color:var(--ink);border-color:color-mix(in srgb,var(--ink) 30%,transparent)}
.btn.sm{padding:9px 14px;font-size:.9rem}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none}

/* reveal */
[data-reveal]{opacity:0;transform:translateY(28px);transition:opacity .9s var(--ease),transform .9s var(--ease);transition-delay:var(--d,0s)}
[data-reveal="left"]{transform:translateX(-40px)}[data-reveal="right"]{transform:translateX(40px)}[data-reveal="scale"]{transform:scale(.94)}[data-reveal="fade"]{transform:none}
[data-reveal].in{opacity:1;transform:none}
.nd-split .w{display:inline-block;overflow:hidden;vertical-align:top;padding-bottom:.08em;margin-bottom:-.08em}
.nd-split .w>span{display:inline-block;transform:translateY(105%);transition:transform .9s var(--ease);transition-delay:calc(var(--i)*45ms)}
.nd-split.in .w>span{transform:none}
[data-scrub-words] .sw{opacity:.16;transition:opacity .2s linear}
[data-scrub-words] .sw.on{opacity:1}

/* marquee */
.marquee{overflow:hidden;white-space:nowrap;-webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.marquee .track{display:inline-flex;gap:3rem;animation:nd-marq var(--speed,28s) linear infinite;padding-right:3rem}
.marquee:hover .track{animation-play-state:paused}
@keyframes nd-marq{to{transform:translateX(-50%)}}

/* tilt */
[data-tilt]{transform-style:preserve-3d;transition:transform .25s var(--ease);will-change:transform}

/* scrub (scroll-scrubbed frame sequence) */
.nd-scrub{position:relative}
.nd-scrub .nd-sticky{position:sticky;top:0;height:100svh;overflow:hidden;display:grid;place-items:center}
.nd-scrub canvas,.nd-scrub .nd-poster{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.nd-scrub .nd-card{position:relative;overflow:hidden;will-change:transform;width:min(96vw,calc(72svh*16/9));aspect-ratio:16/9;border-radius:18px;box-shadow:0 30px 80px rgba(0,0,0,.45)}
.nd-scrub .nd-layer{position:absolute;inset:0;display:grid;place-items:center;pointer-events:none}
[data-at]{opacity:0;transition:opacity .45s var(--ease),transform .6s var(--ease);transform:translateY(18px)}
[data-at].on{opacity:1;transform:none;pointer-events:auto}
.nd-progress{position:absolute;left:50%;bottom:22px;transform:translateX(-50%);width:120px;height:3px;border-radius:3px;background:rgba(255,255,255,.2);overflow:hidden;z-index:5}
.nd-progress i{display:block;height:100%;width:100%;background:var(--accent);transform-origin:left;transform:scaleX(var(--p,0))}

/* puzzle / assemble */
.nd-puzzle{position:relative}
.nd-puzzle .nd-sticky{position:sticky;top:0;height:100svh;display:grid;place-items:center;overflow:hidden}
.nd-board{position:relative;width:min(92vw,calc(78svh*var(--ar,1.5)));aspect-ratio:var(--ar,1.5)}
.nd-tile{position:absolute;background-repeat:no-repeat;will-change:transform,opacity;backface-visibility:hidden}
[data-assemble] > *{will-change:transform,opacity}

/* sticky stack */
[data-stack]{position:relative}
[data-stack] > .stack-card{position:sticky;top:var(--stack-top,12vh)}
[data-stack] > .stack-card > .inner{transform-origin:top center;will-change:transform,opacity}

/* horizontal pin */
.nd-h{position:relative}
.nd-h .nd-sticky{position:sticky;top:0;height:100svh;overflow:hidden;display:flex;align-items:center}
.nd-h .nd-track{display:flex;gap:clamp(16px,3vw,32px);padding-inline:var(--gutter);will-change:transform}

/* before / after */
.ba{position:relative;overflow:hidden;border-radius:var(--radius);user-select:none;touch-action:pan-y;aspect-ratio:var(--ar,4/3);background:#000}
.ba img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.ba .after{clip-path:inset(0 0 0 var(--v,50%))}
.ba .handle{position:absolute;top:0;bottom:0;left:var(--v,50%);width:2px;background:#fff;transform:translateX(-1px);pointer-events:none;box-shadow:0 0 0 1px rgba(0,0,0,.15)}
.ba .handle::after{content:"⟷";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:44px;height:44px;border-radius:50%;background:#fff;color:#111;display:grid;place-items:center;font-size:18px;box-shadow:0 6px 20px rgba(0,0,0,.3)}
.ba input{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:ew-resize;margin:0}
.ba .lbl{position:absolute;top:12px;padding:4px 10px;border-radius:999px;background:rgba(0,0,0,.55);color:#fff;font-size:.75rem;font-weight:600;letter-spacing:.04em;text-transform:uppercase;pointer-events:none}
.ba .lbl.l{left:12px}.ba .lbl.r{right:12px}

/* lightbox */
.nd-lb{border:0;padding:0;background:transparent;max-width:none;max-height:none;width:100vw;height:100svh}
.nd-lb::backdrop{background:rgba(0,0,0,.88)}
.nd-lb .in{position:fixed;inset:0;display:grid;place-items:center;padding:56px 16px}
.nd-lb img{max-height:82svh;width:auto;border-radius:8px}
.nd-lb button{position:fixed;background:rgba(255,255,255,.12);color:#fff;border:0;border-radius:50%;width:48px;height:48px;font-size:22px;cursor:pointer}
.nd-lb .x{top:14px;right:14px}.nd-lb .pv{left:14px;top:50%}.nd-lb .nx{right:14px;top:50%}
.nd-lb figcaption{position:fixed;bottom:18px;left:0;right:0;text-align:center;color:#ddd;font-size:.9rem}

/* calendar + slots (widget primitives; demos style further) */
.nd-cal{display:grid;gap:10px}
.nd-cal .hd{display:flex;align-items:center;justify-content:space-between;gap:8px}
.nd-cal .hd b{font-family:var(--display);font-size:1.05rem}
.nd-cal .hd button{width:36px;height:36px;border-radius:50%;border:1px solid var(--rule);background:transparent;cursor:pointer}
.nd-cal .grid{display:grid;grid-template-columns:repeat(7,1fr);gap:4px;text-align:center}
.nd-cal .dow{font-size:.72rem;text-transform:uppercase;letter-spacing:.06em;opacity:.6;padding:4px 0}
.nd-cal .d{aspect-ratio:1;border-radius:10px;border:1px solid transparent;background:transparent;cursor:pointer;font-variant-numeric:tabular-nums;min-width:0;padding:0}
.nd-cal .d:hover:not([disabled]){border-color:var(--accent)}
.nd-cal .d[disabled]{opacity:.28;cursor:not-allowed;text-decoration:line-through}
.nd-cal .d.today{font-weight:700}
.nd-cal .d[aria-pressed=true]{background:var(--accent);color:var(--on-accent)}
.nd-slots{display:grid;grid-template-columns:repeat(auto-fill,minmax(84px,1fr));gap:8px}
.nd-slots button{padding:10px 6px;border-radius:10px;border:1px solid var(--rule);background:transparent;cursor:pointer;font-variant-numeric:tabular-nums}
.nd-slots button:hover:not([disabled]){border-color:var(--accent)}
.nd-slots button[disabled]{opacity:.3;text-decoration:line-through;cursor:not-allowed}
.nd-slots button[aria-pressed=true]{background:var(--accent);color:var(--on-accent);border-color:var(--accent)}

/* chips / segmented */
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{padding:8px 14px;border-radius:999px;border:1px solid var(--rule);background:transparent;cursor:pointer;font-size:.92rem}
.chip[aria-pressed=true],.chip[aria-selected=true]{background:var(--ink);color:var(--bg);border-color:var(--ink)}

/* form fields */
.fld{display:grid;gap:6px}
.fld label{font-size:.85rem;font-weight:600}
.fld input,.fld select,.fld textarea{width:100%;padding:12px 14px;border-radius:10px;border:1px solid var(--rule);background:var(--bg);color:var(--ink)}
.consent{display:flex;gap:10px;align-items:flex-start;font-size:.82rem;opacity:.85}
.consent input{margin-top:3px;accent-color:var(--accent)}

/* toast */
.nd-toast{position:fixed;left:50%;bottom:calc(84px + env(safe-area-inset-bottom,0px));transform:translate(-50%,20px);opacity:0;z-index:150;background:#0B1626;color:#fff;padding:12px 18px;border-radius:12px;font:500 14px/1.35 system-ui,sans-serif;box-shadow:0 12px 40px rgba(0,0,0,.35);transition:.35s var(--ease);max-width:min(92vw,460px);text-align:center;pointer-events:none}
.nd-toast.on{opacity:1;transform:translate(-50%,0)}

/* mobile sticky action bar */
.mbar{position:fixed;left:0;right:0;bottom:0;z-index:90;display:none;gap:8px;padding:10px 12px calc(10px + env(safe-area-inset-bottom,0px));background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(12px);border-top:1px solid var(--rule);transform:translateY(110%);transition:transform .35s var(--ease)}
.mbar.on{transform:none}
.mbar .btn{flex:1}
@media (max-width:760px){.mbar{display:flex}body{padding-bottom:0}}

/* details/faq */
.faq details{border-bottom:1px solid var(--rule)}
.faq summary{list-style:none;cursor:pointer;padding:18px 0;display:flex;justify-content:space-between;gap:16px;font-weight:600;font-family:var(--display);font-size:1.08rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-weight:400;transition:transform .3s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details>div{padding:0 0 18px;opacity:.85;max-width:70ch}

.sample{font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;opacity:.6}
.nd-foot{padding:28px var(--gutter) calc(28px + 70px);text-align:center;font:13px/1.5 system-ui,sans-serif;opacity:.7}
@media (min-width:761px){.nd-foot{padding-bottom:28px}}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  [data-reveal],.nd-split .w>span,[data-at]{opacity:1!important;transform:none!important}
}