/* ═══════════════════════════════════════════════════════════════════════════
   fg.css — FLUIDGHOST DESIGN SYSTEM (Liquid Glass)
   ───────────────────────────────────────────────────────────────────────────
   One system, two surfaces: the marketing site and the app shell. They share
   this file so a token change lands in both — the split between "homepage
   styles" and "app styles" is exactly how a product ends up with two slightly
   different violets and two slightly different pills.

   What lives here:  tokens · type scale · spacing scale · tone (light/dark)
                     buttons · fields · the navigation bar · scroll edge effect
                     the reveal · accessibility overrides
   What does NOT:    anything a single page needs once. That stays on the page.

   The MATERIAL is lg.css + lg-core.js, loaded alongside this. Nothing in here
   reimplements glass; it only decides where glass is allowed to appear, which
   is the navigation layer and nothing else.
   ═══════════════════════════════════════════════════════════════════════════ */

@font-face{font-family:'Geist';font-style:normal;font-weight:400 900;font-display:swap;
  src:url(./geist-latin.woff2) format('woff2')}
@font-face{font-family:'Geist Mono';font-style:normal;font-weight:400 600;font-display:swap;
  src:url(./geist-mono-latin.woff2) format('woff2')}

:root{
  /* ── ground ─────────────────────────────────────────────────────────────
     Twilight violet, the locked FluidGhost palette. The neutrals are warmed
     toward the brand rather than being pure greys — a 50% grey next to this
     violet reads as a mistake. */
  --black:#07060b;      /* page ground, dark            */
  --deep:#0c0a12;       /* the alternating dark band    */
  --panel:#121019;      /* an opaque content surface    */
  --paper:#f5f5f7;      /* page ground, light           */
  --white:#ffffff;

  /* ── ink ──────────────────────────────────────────────────────────────── */
  --ink-d:#f6f4fa; --ink2-d:#a9a3b8; --ink3-d:#6f697f;
  --ink-l:#16151c; --ink2-l:#55515f; --ink3-l:#86818f;

  /* ── brand ────────────────────────────────────────────────────────────── */
  --violet:#7c5cff;          /* accent on light ground */
  --violet-d:#b8a8ff;        /* accent on dark ground  */
  --brand:linear-gradient(135deg,#7a68c4,#4f4184);
  --brand-glow:109,93,174;

  /* ── semantic. Separate from the accent on purpose: a success state that
        borrows the brand hue stops reading as a state. ──────────────────── */
  --ok:#12a870;   --ok-d:#3ddc97;
  --warn:#b07d00; --warn-d:#fbbf24;
  --bad:#d83a52;  --bad-d:#ff7285;

  --body:'Geist',-apple-system,BlinkMacSystemFont,system-ui,sans-serif;
  --mono:'Geist Mono',ui-monospace,Consolas,monospace;

  /* ── the one spacing scale ────────────────────────────────────────────── */
  --s1:4px;  --s2:8px;  --s3:12px; --s4:16px; --s5:24px;
  --s6:32px; --s7:48px; --s8:64px; --s9:96px; --s10:140px;

  /* ── the one radius scale. Inner radii are DERIVED (see setConcentric). ── */
  --r-xs:10px; --r-sm:14px; --r-md:22px; --r-lg:30px; --r-xl:44px;
  --r-pill:980px;
}

/* ─────────────────────────────────────────────────────────────────────────
   TONE
   A section owns its ground AND its ink. Components read --ink/--ink2/--acc
   and never name a colour directly, which is what lets the same card sit in a
   dark band and a white one without a variant class.
   ───────────────────────────────────────────────────────────────────────── */
[data-tone="dark"]{
  --ink:var(--ink-d); --ink2:var(--ink2-d); --ink3:var(--ink3-d); --ink-inv:#0b0912;
  --acc:var(--violet-d); --okc:var(--ok-d); --warnc:var(--warn-d); --badc:var(--bad-d);
  --hair:rgba(255,255,255,.10); --hair2:rgba(255,255,255,.055);
  --card:var(--panel); --field:rgba(255,255,255,.05);
}
[data-tone="light"]{
  --ink:var(--ink-l); --ink2:var(--ink2-l); --ink3:var(--ink3-l); --ink-inv:#ffffff;
  --acc:var(--violet); --okc:var(--ok); --warnc:var(--warn); --badc:var(--bad);
  --hair:rgba(0,0,0,.10); --hair2:rgba(0,0,0,.055);
  --card:var(--white); --field:rgba(0,0,0,.04);
}

*{box-sizing:border-box;margin:0;padding:0}
/* `hidden` is an attribute with a UA `display:none` that ANY display rule
   outranks. A component that sets display on a class then hides with [hidden]
   silently shows both states — which is how a form ends up with two "Copies"
   fields at once. Make the attribute win. */
[hidden]{display:none !important}
html{scroll-behavior:smooth;background:var(--black);-webkit-text-size-adjust:100%}
body{background:var(--black);color:var(--ink-d);font-family:var(--body);font-size:17px;
     line-height:1.52;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
canvas{display:block}
img,svg{max-width:100%}
::selection{background:rgba(124,92,255,.32)}
:focus-visible{outline:2px solid var(--acc);outline-offset:3px;border-radius:4px}

/* ─────────────────────────────────────────────────────────────────────────
   TYPE — five roles, and that is the whole system
   ───────────────────────────────────────────────────────────────────────── */
.t-hero{font-size:clamp(42px,6.2vw,86px);line-height:1.03;letter-spacing:-.032em;
        font-weight:700;text-wrap:balance}
.t-head{font-size:clamp(31px,4.4vw,56px);line-height:1.07;letter-spacing:-.026em;
        font-weight:700;text-wrap:balance}
.t-sub {font-size:clamp(20px,2.1vw,28px);line-height:1.3;letter-spacing:-.017em;
        font-weight:650;text-wrap:balance}
.t-lede{font-size:clamp(17px,1.5vw,20px);line-height:1.5;color:var(--ink2);font-weight:400}
.t-body{font-size:16px;line-height:1.55;color:var(--ink2)}
.t-eyebrow{font-size:15px;font-weight:600;color:var(--acc);letter-spacing:-.005em}
.t-cap{font:500 11.5px/1.5 var(--mono);letter-spacing:.07em;text-transform:uppercase;
       color:var(--ink3)}
.t-legal{font:400 12.5px/1.55 var(--body);color:var(--ink3)}
.mono{font-family:var(--mono)}
.nums{font-variant-numeric:tabular-nums}

/* ─────────────────────────────────────────────────────────────────────────
   LAYOUT
   ───────────────────────────────────────────────────────────────────────── */
.wrap{max-width:1180px;margin:0 auto;padding:0 26px;position:relative}
.col{max-width:730px}                       /* the only prose width */
.col.mid{margin-inline:auto;text-align:center}
.stack-2>*+*{margin-top:var(--s2)}
.stack-3>*+*{margin-top:var(--s3)}
.stack-4>*+*{margin-top:var(--s4)}
.stack-5>*+*{margin-top:var(--s5)}
.stack-6>*+*{margin-top:var(--s6)}
section{padding:var(--s10) 0;position:relative;color:var(--ink)}
section[data-tone="light"]{background:var(--paper)}
section.pure[data-tone="light"]{background:var(--white)}
section[data-tone="dark"]{background:var(--black)}
section.deep[data-tone="dark"]{background:var(--deep)}

/* ─────────────────────────────────────────────────────────────────────────
   BUTTONS
   Tint carries meaning: ONE primary action per view gets the brand fill.
   Everything else is glass or quiet. That rule is the difference between a
   system and a theme.
   ───────────────────────────────────────────────────────────────────────── */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 25px;border-radius:var(--r-pill);font:600 16px var(--body);
  letter-spacing:-.01em;cursor:pointer;border:0;color:#fff;white-space:nowrap;
  position:relative;text-align:center}
.btn svg{width:17px;height:17px;flex:0 0 auto}
.btn.solid{background:var(--brand);
  box-shadow:0 8px 24px -8px rgba(var(--brand-glow),.8),inset 0 1px 0 rgba(255,255,255,.2);
  transition:transform .32s cubic-bezier(.2,1.25,.35,1),box-shadow .32s}
.btn.solid:hover{transform:translateY(-1.5px);
  box-shadow:0 16px 34px -8px rgba(var(--brand-glow),1)}
.btn.solid:active{transform:scale(.975)}
.btn.quiet{background:var(--field);color:var(--ink)}
.btn.quiet:hover{background:var(--hair)}
.btn.link{padding:0;background:none;color:var(--acc);font-weight:500}
.btn.link::after{content:"\203A";font-size:19px;line-height:1;transform:translateY(-1px)}
.btn.link:hover{text-decoration:underline;text-underline-offset:4px}
.btn.sm{padding:9px 18px;font-size:14px}
.btn.sm svg{width:15px;height:15px}
.btn.lg{padding:15px 30px;font-size:17px}
.btn.full{width:100%}

/* ─────────────────────────────────────────────────────────────────────────
   NAVIGATION BAR + SCROLL EDGE EFFECT
   The edge effect is a PROGRESSIVE blur: six layers, each blurring more and
   masked to a narrower slice, so content dissolves as it slides under the bar
   instead of colliding with it. A single blurred strip has a visible bottom
   lip; this does not.
   ───────────────────────────────────────────────────────────────────────── */
.edgefx{position:fixed;top:0;left:0;right:0;height:120px;z-index:110;
        pointer-events:none;opacity:0;transition:opacity .4s}
.edgefx.on{opacity:1}
.edgefx i{position:absolute;inset:0;display:block}
.edgefx i:nth-child(1){backdrop-filter:blur(1px);
  -webkit-mask:linear-gradient(#000 0,#000 12%,transparent 30%);
          mask:linear-gradient(#000 0,#000 12%,transparent 30%)}
.edgefx i:nth-child(2){backdrop-filter:blur(2px);
  -webkit-mask:linear-gradient(#000 0,#000 24%,transparent 44%);
          mask:linear-gradient(#000 0,#000 24%,transparent 44%)}
.edgefx i:nth-child(3){backdrop-filter:blur(4px);
  -webkit-mask:linear-gradient(#000 0,#000 36%,transparent 58%);
          mask:linear-gradient(#000 0,#000 36%,transparent 58%)}
.edgefx i:nth-child(4){backdrop-filter:blur(9px);
  -webkit-mask:linear-gradient(#000 0,#000 48%,transparent 72%);
          mask:linear-gradient(#000 0,#000 48%,transparent 72%)}
.edgefx i:nth-child(5){backdrop-filter:blur(18px);
  -webkit-mask:linear-gradient(#000 0,#000 60%,transparent 86%);
          mask:linear-gradient(#000 0,#000 60%,transparent 86%)}
.edgefx i:nth-child(6){backdrop-filter:blur(30px);
  -webkit-mask:linear-gradient(#000 0,#000 72%,transparent 100%);
          mask:linear-gradient(#000 0,#000 72%,transparent 100%)}

nav.fg{position:fixed;top:14px;left:50%;transform:translateX(-50%);z-index:130;
       width:fit-content;max-width:calc(100vw - 22px)}
.pillbar{display:flex;align-items:center;gap:var(--s5);padding:7px 8px 7px 18px;
  border-radius:var(--r-pill);color:#f4f1fb;
  transition:gap .5s cubic-bezier(.32,.72,0,1),padding .5s cubic-bezier(.32,.72,0,1)}
.pillbar[data-lg-tone="light"]{color:#1d1b23}
.nlinks{display:flex;gap:var(--s5);font-size:14px;font-weight:500;overflow:hidden;
  max-width:560px;opacity:1;white-space:nowrap;
  transition:max-width .5s cubic-bezier(.32,.72,0,1),opacity .3s}
nav.fg.min .nlinks{max-width:0;opacity:0}
nav.fg.min .pillbar{gap:var(--s3);padding:7px 8px 7px 14px}
/* Minimising must not cost you the navigation — pointing at the bar restores
   it, the same bargain a minimised tab bar makes on touch. */
nav.fg.min:hover .nlinks,nav.fg.min:focus-within .nlinks{max-width:560px;opacity:1}
nav.fg.min:hover .pillbar,nav.fg.min:focus-within .pillbar{gap:var(--s5);padding:7px 8px 7px 18px}
.nlinks a{opacity:.82;transition:opacity .2s}
.nlinks a:hover{opacity:1}
.navburger{display:none;background:none;border:0;color:inherit;cursor:pointer;
  padding:8px;border-radius:var(--r-pill)}
.navburger svg{width:20px;height:20px;stroke:currentColor;stroke-width:2;fill:none;
  stroke-linecap:round}
@media(max-width:940px){
  .nlinks{display:none}
  nav.fg.min:hover .nlinks,nav.fg.min:focus-within .nlinks{display:none}
  .navburger{display:inline-flex}
}

/* ── brand lockup ───────────────────────────────────────────────────────── */
.lockup{display:flex;align-items:center;gap:8px;flex:0 0 auto}
.lockup svg{width:23px;height:23px}
.lockup .word{font-weight:700;font-size:15px;letter-spacing:-.02em;white-space:nowrap}
.lockup .word b{color:#cabdff;font-weight:700}
[data-lg-tone="light"] .lockup .word b{color:#5b4bb0}
.eye{transform-origin:center;animation:blink 5.6s ease-in-out infinite}
@keyframes blink{0%,93%,100%{transform:scaleY(1)}95.5%,97%{transform:scaleY(.08)}}

/* ─────────────────────────────────────────────────────────────────────────
   SURFACES — content sits on these, never on glass
   ───────────────────────────────────────────────────────────────────────── */
.card{background:var(--card);border-radius:var(--r-lg);padding:var(--s6);
      box-shadow:inset 0 0 0 1px var(--hair)}
.card.sm{padding:var(--s5);border-radius:var(--r-md)}
.card h3{font-size:20px;font-weight:650;letter-spacing:-.02em}
.card p{color:var(--ink2);font-size:15.5px;margin-top:var(--s2)}
.card .n{font:600 11.5px var(--mono);letter-spacing:.14em;color:var(--acc);
         text-transform:uppercase}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--s4)}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--s4)}
@media(max-width:900px){.grid-2,.grid-3{grid-template-columns:1fr}}

/* ── data rows, used by both surfaces ───────────────────────────────────── */
.rows{display:grid;gap:var(--s2)}
.row{display:flex;justify-content:space-between;align-items:center;gap:var(--s4);
     font:500 13px var(--mono);padding:11px 0;border-bottom:1px solid var(--hair2)}
.row:last-child{border-bottom:0}
.row .k{color:var(--ink3)}
.row .v{color:var(--ink);font-variant-numeric:tabular-nums}
.row .v.ok{color:var(--okc)}
.row .v.gone{color:var(--ink3);text-decoration:line-through}

/* ── pills / chips ──────────────────────────────────────────────────────── */
.chip{display:inline-flex;align-items:center;gap:7px;padding:6px 13px;
  border-radius:var(--r-pill);font:600 12px var(--body);color:var(--ink2);
  background:var(--field)}
.chip.ok{color:var(--okc);background:color-mix(in srgb,var(--okc) 14%,transparent)}
.chip.warn{color:var(--warnc);background:color-mix(in srgb,var(--warnc) 16%,transparent)}
.chip .dot{width:6px;height:6px;border-radius:50%;background:currentColor}

/* ─────────────────────────────────────────────────────────────────────────
   REVEAL
   The hidden state is applied by JS (html.js-reveal), never by this file, and
   a deadline reveals everything regardless. An IntersectionObserver's first
   callback does not arrive on a page the compositor treats as hidden —
   backgrounded tab, off-screen window, some webviews — and content that only
   exists after that callback is content you can lose.
   ───────────────────────────────────────────────────────────────────────── */
.js-reveal .rv{opacity:0;transform:translateY(24px)}
.rv{transition:opacity .85s cubic-bezier(.32,.72,0,1),
                transform .85s cubic-bezier(.32,.72,0,1)}
.js-reveal .rv.in{opacity:1;transform:none}

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

/* ─────────────────────────────────────────────────────────────────────────
   DESIGN NOTES drawer — present on both mockups, deliberately quiet
   ───────────────────────────────────────────────────────────────────────── */
.notes{position:fixed;right:16px;bottom:16px;z-index:400;
  background:rgba(13,11,19,.72);width:min(430px,calc(100vw - 32px));
  font-size:13px;color:#efeaf8}
.notes summary{list-style:none;cursor:pointer;padding:11px 18px;
  border-radius:var(--r-pill);font:600 12px var(--body);display:flex;
  justify-content:center;position:relative;z-index:5}
.notes summary::-webkit-details-marker{display:none}
.notes .nbody{padding:4px 20px 20px;position:relative;z-index:5;max-height:62vh;
  overflow-y:auto}
.notes h4{font:600 10px var(--mono);letter-spacing:.18em;text-transform:uppercase;
  color:#b8a8ff;margin:16px 0 7px}
.notes p,.notes li{color:#cdc7d9;font-size:12.5px;line-height:1.6}
.notes ul{padding-left:16px;display:grid;gap:5px}
.notes code{font:11px var(--mono);color:#e6dfff;background:rgba(255,255,255,.08);
  padding:1px 5px;border-radius:5px}
.notes .nnav{display:flex;gap:6px;margin-top:16px;flex-wrap:wrap}
.notes .nnav a{font:600 11px var(--body);padding:6px 12px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.10);color:#e8e3f5}
.notes .nnav a[aria-current]{background:var(--brand)}