/* Ourobion — project site. Palette from assets/colors.css (brand truth). */

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

:root{
  --ink:#0B1D24; --ink-2:#2A4C57; --ink-3:#5B7C86;
  --surface:#FFFFFF; --surface-2:#F3F8F9; --line:#DCE8EB;
  --accent:var(--ouro-coil-3); --accent-2:var(--ouro-coil-1);
  --max:1120px; --r:14px;
  --font:"Outfit",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
}
[data-theme="dark"]{
  --ink:#E8F4F6; --ink-2:#A9C6CD; --ink-3:#7599A3;
  --surface:#0B1D24; --surface-2:#0F2730; --line:#1D3B45;
  --accent:var(--ouro-coil-1); --accent-2:var(--ouro-coil-2);
}

body{
  margin:0; font-family:var(--font); color:var(--ink); background:var(--surface);
  -webkit-font-smoothing:antialiased; line-height:1.6; font-size:17px;
  transition:background .35s ease,color .35s ease;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.88em;
  background:color-mix(in oklab,var(--accent) 14%,transparent);padding:.12em .4em;border-radius:5px}
.wrap{max-width:var(--max);margin:0 auto;padding:0 clamp(20px,5vw,40px)}
.muted{color:var(--ink-3)}
.skip{position:absolute;left:-9999px}
.skip:focus{left:16px;top:16px;background:var(--accent);color:#031318;padding:10px 16px;border-radius:8px;z-index:99}

/* ── nav ───────────────────────────────────────────────── */
.nav{
  position:sticky;top:0;z-index:50;display:flex;align-items:center;gap:24px;
  padding:14px clamp(20px,5vw,40px);
  background:color-mix(in oklab,var(--surface) 82%,transparent);
  backdrop-filter:blur(14px);border-bottom:1px solid var(--line);
}
.nav__brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:600;letter-spacing:-.01em}
.nav__mark{width:30px;height:30px}
.nav__links{display:flex;gap:22px;margin-left:auto;font-size:15px}
.nav__links a{color:var(--ink-2);text-decoration:none;transition:color .2s}
.nav__links a:hover{color:var(--accent)}
.theme{
  border:1px solid var(--line);background:transparent;color:var(--ink-2);
  width:36px;height:36px;border-radius:50%;cursor:pointer;font-size:15px;line-height:1;
  display:grid;place-items:center;transition:.2s;
}
.theme:hover{border-color:var(--accent);color:var(--accent)}
@media(max-width:760px){.nav__links{display:none}.nav__links{margin-left:auto}}

/* ── hero ──────────────────────────────────────────────── */
.hero{position:relative;min-height:clamp(560px,86vh,860px);display:grid;place-items:center;
  overflow:hidden;padding:80px 0 100px;
  background:radial-gradient(120% 90% at 50% 0%,color-mix(in oklab,var(--accent) 12%,transparent),transparent 62%);}
.hero__canvas{position:absolute;inset:0;width:100%;height:100%;opacity:.9}
.hero__inner{position:relative;text-align:center;max-width:820px;padding:0 clamp(20px,5vw,40px)}
.eyebrow{font-size:13px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-3);margin:0 0 22px}
.hero__title{
  font-size:clamp(2.4rem,6.4vw,4.5rem);line-height:1.04;letter-spacing:-.035em;
  font-weight:600;margin:0 0 26px;
}
.hero__title em{font-style:normal;color:var(--accent);
  background:linear-gradient(180deg,transparent 68%,color-mix(in oklab,var(--accent) 26%,transparent) 68%)}
.hero__lede{font-size:clamp(1.02rem,2vw,1.2rem);color:var(--ink-2);margin:0 auto 34px;max-width:640px}
.hero__cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.hero__note{margin-top:30px;font-size:13.5px;color:var(--ink-3)}
.hero__scroll{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);
  width:22px;height:34px;border:1.5px solid var(--line);border-radius:12px}
.hero__scroll span{display:block;width:3px;height:7px;border-radius:2px;background:var(--accent);
  margin:6px auto;animation:drop 1.9s ease-in-out infinite}
@keyframes drop{0%,100%{transform:translateY(0);opacity:1}50%{transform:translateY(9px);opacity:.25}}
@media (prefers-reduced-motion:reduce){.hero__scroll span{animation:none}}

.btn{display:inline-block;padding:12px 24px;border-radius:999px;border:1px solid var(--line);
  text-decoration:none;font-weight:500;font-size:15.5px;transition:.22s;background:transparent;color:var(--ink)}
.btn:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}
.btn--primary{background:var(--accent);border-color:var(--accent);color:#04191F}
.btn--primary:hover{filter:brightness(1.1);color:#04191F}
.btn--sm{padding:9px 18px;font-size:14.5px;margin-top:18px}

/* ── bands ─────────────────────────────────────────────── */
.band{padding:clamp(72px,10vw,120px) 0;border-top:1px solid var(--line)}
.band--alt{background:var(--surface-2)}
.kicker{font-size:12.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);
  margin:0 0 14px;font-weight:600}
.band h2{font-size:clamp(1.65rem,3.6vw,2.5rem);line-height:1.16;letter-spacing:-.028em;
  font-weight:600;margin:0 0 28px;max-width:20ch}
.band h2 + .lede,.lede{font-size:clamp(1rem,1.7vw,1.14rem);color:var(--ink-2);max-width:70ch;margin:0 0 40px}

.cols{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,64px)}
.col p{margin:0 0 18px;color:var(--ink-2)}
.pull{font-size:1.2rem;line-height:1.45;color:var(--ink)!important;font-weight:500;
  border-left:3px solid var(--accent);padding-left:20px;margin-bottom:26px!important}
.ticks{list-style:none;padding:0;margin:0;display:grid;gap:11px}
.ticks li{position:relative;padding-left:26px;color:var(--ink-2);font-size:15.5px}
.ticks li::before{content:"×";position:absolute;left:4px;top:-1px;color:var(--accent);font-weight:700}
.criterion{margin:44px 0 0;padding:26px 30px;border-radius:var(--r);
  background:color-mix(in oklab,var(--accent) 9%,transparent);
  border:1px solid color-mix(in oklab,var(--accent) 28%,transparent);
  font-size:1.08rem;line-height:1.5}
@media(max-width:820px){.cols{grid-template-columns:1fr}}

/* ── cards ─────────────────────────────────────────────── */
.two{display:grid;grid-template-columns:1fr 1fr;gap:24px}
@media(max-width:820px){.two{grid-template-columns:1fr}}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);
  padding:clamp(24px,3vw,34px);transition:border-color .25s,transform .25s}
.card:hover{border-color:color-mix(in oklab,var(--accent) 45%,var(--line))}
.band--alt .card{background:var(--surface)}
.card h3{margin:0 0 14px;font-size:1.14rem;font-weight:600;letter-spacing:-.01em}
.card p{margin:0 0 14px;color:var(--ink-2);font-size:15.6px}
.card p:last-child{margin-bottom:0}
.card b{color:var(--ink);font-weight:600}

/* ── chain ─────────────────────────────────────────────── */
.chain{list-style:none;counter-reset:c;padding:0;margin:44px 0 18px;display:grid;gap:9px}
.chain__item{display:flex;align-items:center;gap:16px;padding:14px 20px;border-radius:11px;
  background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--ouro-coil-4)}
.chain__item--det{border-left-color:var(--accent);
  background:color-mix(in oklab,var(--accent) 7%,var(--surface))}
.chain__n{font-variant-numeric:tabular-nums;color:var(--ink-3);font-size:13px;width:16px;flex:none}
.chain__t{flex:1;font-size:15.6px}
.chain__k{font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-3);flex:none}
.chain__item--det .chain__k{color:var(--accent);font-weight:600}
.chain__note{color:var(--ink-3);font-size:15px;max-width:68ch;margin:0}
@media(max-width:640px){.chain__item{flex-wrap:wrap;gap:8px}.chain__k{width:100%}}

/* ── stats ─────────────────────────────────────────────── */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:42px}
.stat{padding:26px 22px;border-radius:var(--r);border:1px solid var(--line);background:var(--surface)}
.stat b{display:block;font-size:clamp(1.8rem,4vw,2.5rem);font-weight:600;letter-spacing:-.03em;
  color:var(--accent);line-height:1.05;font-variant-numeric:tabular-nums}
.stat span{display:block;margin-top:8px;font-size:14px;color:var(--ink-3);line-height:1.35}
@media(max-width:860px){.stats{grid-template-columns:1fr 1fr}}
.snapshot{display:flex;align-items:flex-start;gap:12px;margin:-24px 0 42px;padding:16px 20px;
  border-radius:11px;font-size:14.6px;color:var(--ink-2);line-height:1.5;
  background:color-mix(in oklab,var(--ouro-coil-4) 7%,transparent);
  border:1px solid color-mix(in oklab,var(--ouro-coil-4) 24%,transparent)}
.snapshot strong{color:var(--ink);font-weight:600}
.snapshot__dot{flex:none;width:8px;height:8px;border-radius:50%;margin-top:8px;
  background:var(--ouro-coil-4);box-shadow:0 0 0 4px color-mix(in oklab,var(--ouro-coil-4) 18%,transparent)}

/* ── products ──────────────────────────────────────────── */
/* Product identity blend.
   --mix (0→1) is written by JS from each card's position in the viewport, so the
   card crossfades from the SITE palette into its OWN brand palette as you scroll.
   Registering --mix as a <number> is what makes it usable inside calc()/color-mix
   and what lets it interpolate smoothly instead of snapping. */
@property --mix{syntax:'<number>';initial-value:0;inherits:true}

.product{
  --mix:0;--form:1;
  /* product brand colours, sampled from the marks themselves */
  --p1:var(--accent); --p2:var(--accent-2);
  /* the live blend: site palette → product palette */
  --pc:color-mix(in oklab,var(--p1) calc(var(--mix) * 100%),var(--accent));
  --pc2:color-mix(in oklab,var(--p2) calc(var(--mix) * 100%),var(--accent-2));

  position:relative;isolation:isolate;overflow:hidden;
  background:var(--surface);
  border:1px solid color-mix(in oklab,var(--pc) calc(var(--mix) * 55%),var(--line));
  border-radius:var(--r);
  padding:clamp(26px,3vw,36px);display:flex;flex-direction:column;
  transition:border-color .4s ease,box-shadow .4s ease;
  box-shadow:0 0 0 0 transparent;
}
.product--biotope{--p1:#E2C488;--p2:#8C6C34}
.product--nao{--p1:#2BC4BE;--p2:#7C86F2}

/* the wash that renders the mixture itself */
.product::before{
  content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(130% 90% at 18% 0%,color-mix(in oklab,var(--p1) 26%,transparent),transparent 62%),
    linear-gradient(150deg,color-mix(in oklab,var(--p2) 16%,transparent),transparent 55%);
  opacity:var(--mix);
  transition:opacity .25s linear;
}
/* a thin spectrum along the top edge: site colour on the left, product on the right */
.product::after{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;z-index:1;pointer-events:none;
  background:linear-gradient(90deg,var(--accent),var(--pc) 45%,var(--pc2));
  transform:scaleX(var(--mix));transform-origin:0 50%;
}

/* ── card assembly ─────────────────────────────────────────
 * --form (0→1) is written by JS from scroll position. At 0 the card is nothing
 * but its mark, huge and centred; as you scroll the mark shrinks back into its
 * corner and the surface, border and body materialise around it.
 * --dx/--dy are measured per card so the mark can travel to the real centre. */
@property --form{syntax:'<number>';initial-value:1;inherits:true}

.product{--form:1;--dx:0px;--dy:0px}
.product{
  background:color-mix(in oklab,var(--surface) calc(var(--form) * 100%),transparent);
  min-height:var(--card-h,auto);
}
.product::before{opacity:calc(var(--mix) * var(--form))}
.product::after{transform:scaleX(calc(var(--mix) * var(--form)))}

.product__body{
  opacity:calc(max(0,var(--form) - .35) / .65);
  transform:translateY(calc((1 - var(--form)) * 26px));
  transition:opacity .12s linear,transform .12s linear;
}

.product__mark{width:52px;height:52px;margin-bottom:18px;
  filter:drop-shadow(0 6px 18px color-mix(in oklab,var(--p1) calc(var(--mix) * 45%),transparent));
  transform:
    translate(calc(var(--dx) * (1 - var(--form))),calc(var(--dy) * (1 - var(--form))))
    scale(calc(1 + (1 - var(--form)) * var(--grow,3.2)));
  transform-origin:50% 50%;
  transition:filter .3s ease;
  will-change:transform;
}
.product h3{margin:0 0 4px;font-size:1.5rem;font-weight:600;letter-spacing:-.02em;
  color:color-mix(in oklab,var(--pc) calc(var(--mix) * 88%),var(--ink))}
.product__role{margin:0 0 16px;font-size:13.5px;color:var(--pc);letter-spacing:.02em}
.product p{color:var(--ink-2);font-size:15.6px;margin:0 0 18px}
.product .feat li::before{background:color-mix(in oklab,var(--pc) 30%,transparent);border-color:var(--pc)}
.product .btn{border-color:color-mix(in oklab,var(--pc) calc(var(--mix) * 70%),var(--line))}
.product .btn:hover{border-color:var(--pc);color:var(--pc)}
.feat{list-style:none;padding:0;margin:2px 0 auto;display:grid;gap:10px}
.feat li{position:relative;padding-left:24px;font-size:15.2px;color:var(--ink-2)}
.feat li::before{content:"";position:absolute;left:2px;top:9px;width:9px;height:9px;border-radius:50%;
  background:color-mix(in oklab,var(--accent) 30%,transparent);
  border:1.5px solid var(--accent)}
.product__fine{margin:12px 0 0!important;font-size:13.2px;color:var(--ink-3)}
.access{margin:30px 0 0;padding:20px 24px;border-radius:var(--r);background:var(--surface);
  border:1px solid var(--line);font-size:15.2px;color:var(--ink-2)}

/* ── next / limits ─────────────────────────────────────── */
.next{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-bottom:34px}
.next__i{padding:22px 24px;border-radius:var(--r);border:1px solid var(--line);background:var(--surface)}
.next__i h4{margin:0 0 9px;font-size:1.02rem;font-weight:600}
.next__i p{margin:0;color:var(--ink-2);font-size:15.2px}
@media(max-width:820px){.next{grid-template-columns:1fr}}
.goal{padding:24px 28px;border-radius:var(--r);font-size:1.04rem;line-height:1.55;color:var(--ink-2);
  background:color-mix(in oklab,var(--accent) 9%,transparent);
  border:1px solid color-mix(in oklab,var(--accent) 30%,transparent);margin:0}
.goal strong{color:var(--ink);font-weight:600}

/* ── team ──────────────────────────────────────────────── */
.team{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.member{display:block;padding:24px;border-radius:var(--r);border:1px solid var(--line);
  background:var(--surface);text-decoration:none;transition:border-color .25s,transform .25s}
.member:hover{border-color:var(--accent);transform:translateY(-2px)}
.member b{display:block;font-size:1.14rem;font-weight:600;margin-bottom:5px}
.member span{display:block;color:var(--ink-3);font-size:14.4px}
.member__li{margin-top:12px;font-size:13px!important;color:var(--accent)!important;
  letter-spacing:.04em;opacity:.75;transition:opacity .25s}
.member:hover .member__li{opacity:1}
@media(max-width:760px){.team{grid-template-columns:1fr}}

/* ── footer ────────────────────────────────────────────── */
.foot{border-top:1px solid var(--line);padding:60px 0 40px;background:var(--surface-2)}
.foot__grid{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap;margin-bottom:40px}
.foot__lockup{height:34px;width:auto;margin-bottom:16px}
.foot__tag{max-width:42ch;color:var(--ink-3);font-size:14.6px;margin:0}
.foot__links{display:grid;gap:11px;font-size:15px}
.foot__links a{color:var(--ink-2);text-decoration:none}
.foot__links a:hover{color:var(--accent)}
.foot__legal{border-top:1px solid var(--line);padding-top:26px;font-size:13.6px;color:var(--ink-3)}
.foot__legal p{margin:0 0 8px;max-width:80ch}

/* ── scroll choreography ───────────────────────────────── */
/* Elements start displaced and settle when observed. Everything is opt-in via
   [data-reveal], so anything not marked renders normally with JS disabled. */
[data-reveal]{opacity:0;transform:translateY(22px);
  transition:opacity .7s cubic-bezier(.2,.7,.3,1),transform .7s cubic-bezier(.2,.7,.3,1)}
[data-reveal].in{opacity:1;transform:none}
[data-reveal][data-reveal="left"]{transform:translateX(-26px)}
[data-reveal][data-reveal="scale"]{transform:scale(.96)}

/* Staggered children — the chain reads as layers stacking up, which is the point. */
[data-stagger] > *{opacity:0;transform:translateY(16px);
  transition:opacity .55s cubic-bezier(.2,.7,.3,1),transform .55s cubic-bezier(.2,.7,.3,1);
  transition-delay:calc(var(--i,0) * 70ms)}
[data-stagger].in > *{opacity:1;transform:none}

/* Hero parallax: driven by --scroll (0→1), written by JS on the section. */
.hero__inner{will-change:transform,opacity}

/* Reading-progress rail */
.progress{position:fixed;top:0;left:0;height:2px;z-index:60;width:100%;
  background:transparent;pointer-events:none}
.progress__bar{height:100%;width:0;transform-origin:0 50%;
  background:linear-gradient(90deg,var(--ouro-coil-1),var(--ouro-coil-3),var(--ouro-coil-5))}

.stat b{transition:none}

@media (prefers-reduced-motion:reduce){
  [data-reveal],[data-stagger] > *{opacity:1!important;transform:none!important;transition:none!important}
  .progress{display:none}
}