/* ============================================================
   Carve Model — shared site styles
   Monochrome, architectural, dark-first. Sharp edges, hairlines,
   measured grid, mono ticks. Built on the brand token system.
   ============================================================ */

/* ---- Tokens ---- */
:root {
  --cm-black:#000; --cm-ink-950:#08090B; --cm-ink-900:#0D0E11; --cm-ink-850:#121317;
  --cm-ink-800:#17191D; --cm-ink-700:#1F2126; --cm-ink-600:#2A2D33; --cm-ink-500:#3A3E45;
  --cm-ink-400:#54595F; --cm-gray-500:#6E737B; --cm-gray-400:#888D95; --cm-gray-300:#A4A8AF;
  --cm-silver:#B6B6B6; --cm-gray-200:#C9CCD0; --cm-gray-100:#E4E6E9; --cm-paper:#F5F5F3; --cm-white:#FFF;

  --cm-line:rgba(255,255,255,0.10); --cm-line-strong:rgba(255,255,255,0.20); --cm-line-faint:rgba(255,255,255,0.055);
  --cm-scrim:rgba(0,0,0,0.55); --cm-scrim-strong:rgba(0,0,0,0.80);

  --cm-bg:var(--cm-ink-900); --cm-bg-plate:var(--cm-black);
  --cm-surface:var(--cm-ink-800); --cm-surface-2:var(--cm-ink-700); --cm-surface-hover:var(--cm-ink-600);
  --cm-border:var(--cm-line); --cm-border-strong:var(--cm-line-strong);
  --cm-text:#ECEDEE; --cm-text-strong:#fff; --cm-text-muted:var(--cm-gray-400); --cm-text-subtle:var(--cm-gray-500);
  --cm-accent:var(--cm-white); --cm-accent-hover:var(--cm-gray-100); --cm-accent-contrast:var(--cm-ink-900);

  --font-display:"Montserrat","Hanken Grotesk",system-ui,sans-serif;
  --font-sans:"Hanken Grotesk",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,Menlo,Consolas,monospace;

  --w-regular:400; --w-medium:500; --w-semibold:600; --w-bold:700; --w-black:800;

  --track-eyebrow:0.22em; --track-tight:-0.02em; --track-snug:-0.01em;

  --container:1280px; --container-narrow:760px;
  --section-y:clamp(4.5rem,2rem + 9vw,10rem);
  --gutter:clamp(1.25rem,4vw,2.5rem);

  --r-sm:2px; --r-md:4px; --r-lg:8px; --r-pill:999px;

  --dur-2:200ms; --dur-3:320ms; --dur-4:520ms;
  --ease-out:cubic-bezier(0.22,1,0.36,1); --ease-standard:cubic-bezier(0.4,0,0.2,1);

  --shadow-md:0 8px 24px -8px rgba(0,0,0,0.45);
  --shadow-lg:0 24px 60px -16px rgba(0,0,0,0.55);
  --shadow-float:0 32px 80px -24px rgba(0,0,0,0.65);
}

/* ---- Reset / base ---- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;background:var(--cm-bg);color:var(--cm-text);
  font-family:var(--font-sans);font-size:1rem;line-height:1.62;
  font-weight:var(--w-regular);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4,h5{margin:0;font-family:var(--font-display);color:var(--cm-text-strong);font-weight:var(--w-bold);line-height:1.08;letter-spacing:var(--track-tight);}
p{margin:0;text-wrap:pretty;}
::selection{background:var(--cm-white);color:var(--cm-ink-900);}

/* ---- Layout primitives ---- */
.container{max-width:var(--container);margin-inline:auto;padding-inline:var(--gutter);}
.narrow{max-width:var(--container-narrow);}
.section{padding-block:var(--section-y);}
.section--tight{padding-block:clamp(3rem,5vw,5rem);}

/* ---- Eyebrow / mono ticks ---- */
.eyebrow{
  font-family:var(--font-mono);font-size:0.72rem;font-weight:var(--w-medium);
  letter-spacing:var(--track-eyebrow);text-transform:uppercase;color:var(--cm-silver);
  display:inline-flex;align-items:center;gap:0.7rem;
}
.eyebrow::before{content:"";width:1.6rem;height:1px;background:var(--cm-silver);opacity:0.6;}
.eyebrow.no-rule::before{display:none;}
.tick{font-family:var(--font-mono);font-size:0.72rem;letter-spacing:0.04em;color:var(--cm-text-subtle);}

/* ---- Display type scale ---- */
.display-xl{font-size:clamp(2.9rem,7.5vw,6.5rem);line-height:0.98;letter-spacing:-0.03em;font-weight:var(--w-black);}
.display-lg{font-size:clamp(2.4rem,5.4vw,4.5rem);line-height:1.02;letter-spacing:-0.025em;font-weight:var(--w-bold);}
.display-md{font-size:clamp(1.9rem,3.4vw,3rem);line-height:1.06;letter-spacing:-0.02em;font-weight:var(--w-bold);}
.heading-sm{font-size:clamp(1.25rem,1.8vw,1.6rem);line-height:1.15;letter-spacing:-0.01em;font-weight:var(--w-semibold);}
.lead{font-size:clamp(1.05rem,1.5vw,1.3rem);line-height:1.55;color:var(--cm-gray-300);font-weight:var(--w-regular);}
.muted{color:var(--cm-text-muted);}
.subtle{color:var(--cm-text-subtle);}
.measure{max-width:62ch;}
.measure-sm{max-width:46ch;}

/* ---- Buttons ---- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:0.6rem;
  font-family:var(--font-sans);font-weight:var(--w-semibold);font-size:0.95rem;letter-spacing:0.01em;
  padding:0.95rem 1.6rem;border:1px solid transparent;border-radius:var(--r-sm);
  transition:background var(--dur-2) var(--ease-standard),color var(--dur-2),border-color var(--dur-2),transform var(--dur-2);
  white-space:nowrap;line-height:1;
}
.btn:active{transform:translateY(1px);}
.btn--primary{background:var(--cm-accent);color:var(--cm-accent-contrast);}
.btn--primary:hover{background:var(--cm-accent-hover);}
.btn--ghost{background:transparent;color:var(--cm-text-strong);border-color:var(--cm-border-strong);}
.btn--ghost:hover{background:var(--cm-surface);border-color:var(--cm-text-subtle);}
.btn--lg{padding:1.15rem 2rem;font-size:1rem;}
.btn .arrow{transition:transform var(--dur-2) var(--ease-out);}
.btn:hover .arrow{transform:translateX(4px);}

/* ---- Header / nav ---- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:color-mix(in srgb,var(--cm-ink-900) 78%,transparent);
  backdrop-filter:blur(18px) saturate(1.2);-webkit-backdrop-filter:blur(18px) saturate(1.2);
  border-bottom:1px solid var(--cm-line-faint);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:74px;}
.nav__brand{display:flex;align-items:center;gap:0.7rem;}
.nav__brand img{height:34px;width:auto;}
.nav__links{display:flex;align-items:center;gap:2.1rem;list-style:none;margin:0;padding:0;}
.nav__links a{
  font-size:0.92rem;color:var(--cm-gray-300);font-weight:var(--w-medium);letter-spacing:0.005em;
  position:relative;padding:0.4rem 0;transition:color var(--dur-2);
}
.nav__links a:hover,.nav__links a[aria-current="page"]{color:var(--cm-text-strong);}
.nav__links a[aria-current="page"]::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:1px;background:var(--cm-silver);
}
.nav__actions{display:flex;align-items:center;gap:0.9rem;}
.nav__login{font-size:0.92rem;color:var(--cm-gray-300);font-weight:var(--w-medium);transition:color var(--dur-2);}
.nav__login:hover{color:var(--cm-text-strong);}
.nav__toggle{display:none;background:none;border:1px solid var(--cm-border-strong);border-radius:var(--r-sm);width:42px;height:42px;align-items:center;justify-content:center;}
.nav__toggle span,.nav__toggle span::before,.nav__toggle span::after{content:"";display:block;width:18px;height:1.5px;background:var(--cm-text);position:relative;transition:0.2s;}
.nav__toggle span::before{position:absolute;top:-6px;}
.nav__toggle span::after{position:absolute;top:6px;}

.mobile-menu{display:none;flex-direction:column;gap:0.25rem;padding:1rem var(--gutter) 1.5rem;border-bottom:1px solid var(--cm-line-faint);background:var(--cm-ink-900);}
.mobile-menu a{padding:0.75rem 0;font-size:1.1rem;font-weight:var(--w-medium);border-bottom:1px solid var(--cm-line-faint);color:var(--cm-gray-200);}
.mobile-menu.open{display:flex;}

@media(max-width:880px){
  .nav__links,.nav__actions .btn,.nav__login{display:none;}
  .nav__toggle{display:flex;}
}

/* ---- Footer ---- */
.site-footer{border-top:1px solid var(--cm-line-faint);background:var(--cm-ink-950);padding-block:clamp(3.5rem,6vw,5.5rem) 2.5rem;}
.footer__top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:2.5rem;}
.footer__brand img{height:40px;margin-bottom:1.3rem;}
.footer__brand p{color:var(--cm-text-muted);max-width:34ch;font-size:0.95rem;}
.footer__col h4{font-family:var(--font-mono);font-size:0.72rem;letter-spacing:var(--track-eyebrow);text-transform:uppercase;color:var(--cm-text-subtle);font-weight:var(--w-medium);margin-bottom:1.2rem;}
.footer__col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:0.7rem;}
.footer__col a{color:var(--cm-gray-300);font-size:0.95rem;transition:color var(--dur-2);}
.footer__col a:hover{color:var(--cm-text-strong);}
.footer__bottom{display:flex;justify-content:space-between;align-items:center;gap:1rem;flex-wrap:wrap;margin-top:3.5rem;padding-top:1.8rem;border-top:1px solid var(--cm-line-faint);}
.footer__bottom p,.footer__bottom a{font-size:0.82rem;color:var(--cm-text-subtle);}
.footer__social{display:flex;align-items:center;gap:0.6rem;}
.social-link{display:flex;align-items:center;justify-content:center;width:38px;height:38px;border:1px solid var(--cm-border);border-radius:var(--r-sm);color:var(--cm-gray-300);transition:color var(--dur-2),border-color var(--dur-2),background var(--dur-2);}
.social-link:hover{color:var(--cm-text-strong);border-color:var(--cm-text-subtle);background:var(--cm-surface);}
.social-link svg{width:18px;height:18px;}
.nav__social{display:flex;align-items:center;gap:0.4rem;}
.nav__social a{display:flex;align-items:center;justify-content:center;width:34px;height:34px;color:var(--cm-gray-300);transition:color var(--dur-2);}
.nav__social a:hover{color:var(--cm-text-strong);}
.nav__social svg{width:18px;height:18px;}
@media(max-width:880px){.nav__social{display:none;}}
@media(max-width:760px){.footer__top{grid-template-columns:1fr 1fr;gap:2rem;}.footer__brand{grid-column:1/-1;}}

/* ---- Cards / surfaces ---- */
.card{background:var(--cm-surface);border:1px solid var(--cm-border);border-radius:var(--r-sm);transition:border-color var(--dur-3),background var(--dur-3),transform var(--dur-3);}
.card:hover{border-color:var(--cm-border-strong);}

/* ---- Hairline grid framing ---- */
.framed{position:relative;}
.rule{height:1px;background:var(--cm-line-faint);border:0;margin:0;}

/* ---- Image slot styling ---- */
image-slot{display:block;background:var(--cm-ink-850);border:1px solid var(--cm-border);overflow:hidden;}
.slot-label{position:absolute;left:0;bottom:0;z-index:2;font-family:var(--font-mono);font-size:0.7rem;letter-spacing:0.04em;color:var(--cm-gray-200);background:var(--cm-scrim-strong);padding:0.4rem 0.7rem;text-transform:uppercase;}

/* ---- Reveal on scroll ---- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity var(--dur-4) var(--ease-out),transform var(--dur-4) var(--ease-out);}
.reveal.in{opacity:1;transform:none;}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none;}}

/* ---- Stat / number ---- */
.stat__num{font-family:var(--font-display);font-weight:var(--w-black);font-size:clamp(2.4rem,4vw,3.6rem);line-height:1;letter-spacing:-0.03em;color:var(--cm-text-strong);}
.stat__label{font-family:var(--font-mono);font-size:0.74rem;letter-spacing:0.04em;color:var(--cm-text-muted);text-transform:uppercase;margin-top:0.6rem;}

/* ---- Tag / pill ---- */
.pill{display:inline-flex;align-items:center;gap:0.5rem;font-family:var(--font-mono);font-size:0.72rem;letter-spacing:0.04em;text-transform:uppercase;color:var(--cm-gray-300);border:1px solid var(--cm-border);border-radius:var(--r-pill);padding:0.4rem 0.85rem;}

/* ---- Utility ---- */
.flex{display:flex;}
.grid{display:grid;}
.gap-sm{gap:0.75rem;}.gap{gap:1.25rem;}.gap-lg{gap:2rem;}
.items-center{align-items:center;}
.justify-between{justify-content:space-between;}
.wrap{flex-wrap:wrap;}
.text-center{text-align:center;}
.mt-1{margin-top:0.5rem;}.mt-2{margin-top:1rem;}.mt-3{margin-top:1.5rem;}.mt-4{margin-top:2rem;}.mt-6{margin-top:3rem;}
.full{width:100%;}

/* ---- Article / blog post ---- */
.article__back{font-family:var(--font-mono);font-size:0.72rem;letter-spacing:0.04em;text-transform:uppercase;color:var(--cm-text-subtle);display:inline-flex;gap:0.5rem;align-items:center;transition:color var(--dur-2);}
.article__back:hover{color:var(--cm-text);}
.article__meta{font-family:var(--font-mono);font-size:0.72rem;letter-spacing:0.04em;text-transform:uppercase;color:var(--cm-text-subtle);margin-top:1.8rem;display:flex;gap:1.2rem;flex-wrap:wrap;}
.article h1{margin-top:1.1rem;}
.article__lead{margin-top:1.5rem;}
.article__cover image-slot{width:100%;aspect-ratio:16/8;margin-top:2.5rem;}
.prose{max-width:720px;}
.prose h2{font-size:clamp(1.45rem,2.4vw,1.95rem);letter-spacing:-0.02em;margin-top:2.8rem;}
.prose h3{font-family:var(--font-display);font-size:1.18rem;font-weight:var(--w-semibold);margin-top:1.8rem;color:var(--cm-text-strong);}
.prose p{margin-top:1rem;color:var(--cm-gray-300);font-size:1.06rem;line-height:1.72;}
.prose ul{margin-top:1.1rem;padding-left:0;list-style:none;display:flex;flex-direction:column;gap:0.65rem;}
.prose ul li{position:relative;padding-left:1.3rem;color:var(--cm-gray-300);font-size:1.02rem;line-height:1.6;}
.prose ul li::before{content:"";position:absolute;left:0;top:0.62em;width:6px;height:6px;background:var(--cm-silver);}
.prose strong{color:var(--cm-text);font-weight:var(--w-semibold);}
.spec-table{margin-top:1.6rem;border-top:1px solid var(--cm-border-strong);}
.spec-table .r{display:flex;justify-content:space-between;gap:1.5rem;padding:0.95rem 0;border-bottom:1px solid var(--cm-line-faint);}
.spec-table .r .l{color:var(--cm-text);font-weight:var(--w-medium);}
.spec-table .r .v{font-family:var(--font-mono);font-size:0.85rem;color:var(--cm-silver);text-align:right;white-space:nowrap;}
.callout{margin-top:2rem;background:rgba(182,182,182,0.07);border:1px solid var(--cm-border);border-left:2px solid var(--cm-silver);padding:1.2rem 1.4rem;border-radius:var(--r-sm);color:var(--cm-gray-200);font-size:1rem;line-height:1.6;}
.callout strong{color:var(--cm-text-strong);}
.article-foot{margin-top:3.5rem;padding-top:2rem;border-top:1px solid var(--cm-line-faint);}