/* ============================================================
   AAKAR INDUSTRIES — shared design system
   Brand: structural · machined · durable · "built, not styled"
   Palette: ink #0d1716 · green #5ac45e · mint #d7ffd7 · white
   ============================================================ */

:root{
  --ink:#0d1716;
  --ink-2:#13201d;
  --ink-3:#1b2b27;
  --green:#5ac45e;
  --green-deep:#2f8f49;
  --green-ink:#1c5a30;
  --mint:#d7ffd7;
  --mint-soft:#eafced;
  --white:#ffffff;
  --paper:#f6f8f4;
  --line:rgba(13,23,22,.12);
  --line-dk:rgba(255,255,255,.14);

  --font-display:"Clash Display","Satoshi",system-ui,sans-serif;
  --font-body:"Satoshi",system-ui,-apple-system,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,monospace;

  --maxw:1320px;
  --gutter:clamp(20px,5vw,72px);
  --nav-h:78px;

  --ease:cubic-bezier(.22,1,.36,1);
  --ease-2:cubic-bezier(.65,.05,.36,1);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;width:100%;max-width:100vw;overflow-x:hidden;}
body{
  font-family:var(--font-body);
  background:var(--paper);
  color:var(--ink);
  line-height:1.55;
  font-size:clamp(16px,1.05vw,18px);
  -webkit-font-smoothing:antialiased;
  width:100%;
  max-width:100vw;
  overflow-x:hidden;
}
::selection{background:var(--green);color:var(--ink)}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul{list-style:none}

/* ---------- typography ---------- */
h1,h2,h3,h4{font-family:var(--font-display);font-weight:600;line-height:1.02;letter-spacing:-.02em}
.display{
  font-family:var(--font-display);font-weight:600;
  font-size:clamp(2.7rem,8.2vw,7.5rem);
  line-height:.94;letter-spacing:-.035em;
}
.h-xl{font-size:clamp(2.2rem,5.2vw,4.4rem);line-height:.98;letter-spacing:-.03em}
.h-lg{font-size:clamp(1.8rem,3.4vw,3rem);line-height:1.02;letter-spacing:-.025em}
.h-md{font-size:clamp(1.35rem,2.2vw,2rem);line-height:1.08;letter-spacing:-.02em}
.lede{font-size:clamp(1.1rem,1.7vw,1.45rem);line-height:1.5;font-weight:500}
.mono{font-family:var(--font-mono);font-weight:500;letter-spacing:.02em}

/* eyebrow / technical label */
.eyebrow{
  font-family:var(--font-mono);
  font-size:.72rem;font-weight:600;
  letter-spacing:.28em;text-transform:uppercase;
  display:inline-flex;align-items:center;gap:.6em;
  color:var(--green-deep);
}
.eyebrow::before{content:"";width:26px;height:1px;background:currentColor;opacity:.6}
.on-dark .eyebrow,.dark .eyebrow{color:var(--green)}

/* ---------- layout ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:var(--gutter)}
.section{position:relative;padding-block:clamp(72px,11vw,150px)}
.dark{background:var(--ink);color:#eaf3ec}
.dark h1,.dark h2,.dark h3,.dark h4{color:#fff}
.mint{background:var(--mint-soft)}
.grid{display:grid;gap:clamp(20px,3vw,44px)}

/* ---------- buttons ---------- */
.btn{
  --bg:var(--ink);--fg:#fff;
  position:relative;display:inline-flex;align-items:center;gap:.7em;
  font-family:var(--font-body);font-weight:600;font-size:.98rem;
  padding:1.05em 1.7em;border-radius:100px;
  background:var(--bg);color:var(--fg);
  border:1px solid transparent;cursor:pointer;
  transition:transform .5s var(--ease),background .35s var(--ease),color .35s;
  will-change:transform;overflow:hidden;isolation:isolate;white-space:nowrap;
}
.btn .arw{transition:transform .45s var(--ease)}
.btn:hover .arw{transform:translateX(4px)}
.btn--green{--bg:var(--green);--fg:var(--ink)}
.btn--ghost{--bg:transparent;--fg:var(--ink);border-color:var(--line)}
.dark .btn--ghost,.on-dark .btn--ghost{--fg:#fff;border-color:var(--line-dk)}
.btn--ghost:hover{--bg:var(--ink);--fg:#fff}
.dark .btn--ghost:hover{--bg:#fff;--fg:var(--ink)}
.btn::after{
  content:"";position:absolute;inset:0;z-index:-1;border-radius:inherit;
  background:var(--green);transform:translateY(101%);
  transition:transform .5s var(--ease);
}
.btn--green::after{background:var(--ink)}
.btn:hover::after{transform:translateY(0)}
.btn--green:hover{color:#fff}
.btn:not(.btn--green):hover{color:var(--ink)}
.dark .btn:not(.btn--green):hover{color:var(--ink)}

.txtlink{
  display:inline-flex;align-items:center;gap:.5em;font-weight:600;
  border-bottom:1px solid currentColor;padding-bottom:2px;
  transition:gap .35s var(--ease),color .3s;
}
.txtlink:hover{gap:.85em;color:var(--green-deep)}
.dark .txtlink:hover{color:var(--green)}

/* ---------- top nav ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:80;height:var(--nav-h);
  display:flex;align-items:center;
  transition:background .4s var(--ease),box-shadow .4s,backdrop-filter .4s;
}
.nav__inner{
  max-width:var(--maxw);margin:0 auto;width:100%;
  padding-inline:var(--gutter);
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.nav__logo{height:30px;width:auto;transition:opacity .3s}
.nav__logo--dark{display:none}
.nav__links{display:flex;align-items:center;gap:clamp(18px,2vw,34px)}
.nav__links a{
  font-size:.95rem;font-weight:600;position:relative;color:#fff;
  opacity:.9;transition:opacity .3s;
}
.nav__links a::after{
  content:"";position:absolute;left:0;bottom:-6px;height:2px;width:0;
  background:var(--green);transition:width .4s var(--ease);
}
.nav__links a:hover{opacity:1}
.nav__links a:hover::after,.nav__links a[aria-current="page"]::after{width:100%}
.nav__cta{margin-left:6px}

/* nav dropdown */
.nav__item{position:relative;display:flex;align-items:center}
.nav__top{display:inline-flex;align-items:center;gap:.4em}
.nav__chev{font-size:.7em;transition:transform .35s var(--ease);opacity:.8}
.nav__item:hover .nav__chev,.nav__item:focus-within .nav__chev{transform:rotate(180deg)}
.nav__drop{
  position:absolute;top:100%;left:50%;transform:translate(-50%,10px);
  margin-top:14px;min-width:284px;background:var(--white);color:var(--ink);
  border:1px solid var(--line);border-radius:16px;padding:10px;
  box-shadow:0 30px 70px -24px rgba(13,23,22,.45);
  display:flex;flex-direction:column;gap:2px;
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .3s var(--ease),transform .35s var(--ease),visibility .3s;
  z-index:90;
}
.nav__drop::before{content:"";position:absolute;top:-14px;left:0;right:0;height:14px}
.nav__item:hover .nav__drop,.nav__item:focus-within .nav__drop{
  opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0)}
.nav__drop a{display:flex;flex-direction:column;gap:3px;padding:13px 15px;border-radius:11px;
  color:var(--ink)!important;transition:background .25s,transform .25s var(--ease)}
.nav__drop a:hover{background:var(--mint-soft);transform:translateX(3px)}
.nav__drop a::after{display:none}
.nav__drop-t{font-family:var(--font-display);font-weight:600;font-size:1.02rem;letter-spacing:-.01em}
.nav__drop-s{font-size:.72rem;color:var(--green-deep);letter-spacing:.04em}
.nav__drop-all{flex-direction:row!important;align-items:center;justify-content:space-between;
  margin-top:4px;border-top:1px solid var(--line);border-radius:0 0 11px 11px;
  font-weight:600;font-size:.9rem;color:var(--green-deep)!important}
.nav__drop-all .arw{transition:transform .35s var(--ease)}
.nav__drop-all:hover .arw{transform:translateX(4px)}

/* scrolled state -> solid light bar */
.nav.is-solid{background:rgba(246,248,244,.85);backdrop-filter:blur(16px) saturate(1.4);box-shadow:0 1px 0 var(--line)}
.nav.is-solid .nav__logo--white{display:none}
.nav.is-solid .nav__logo--dark{display:block}
.nav.is-solid .nav__links a{color:var(--ink)}
.nav.is-solid .nav__burger span{background:var(--ink) !important}

.nav__burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px;z-index:100;position:absolute;right:var(--gutter);top:50%;transform:translateY(-50%);}
.nav__burger span{width:26px;height:2px;background:#fff !important;border-radius:2px;transition:.35s var(--ease);display:block;}

/* mobile menu */
.menu{
  position:fixed;inset:0;z-index:79;background:var(--ink);color:#fff;
  display:flex;flex-direction:column;justify-content:flex-start;gap:8px;
  padding:calc(var(--nav-h) + 30px) var(--gutter) var(--gutter);
  clip-path:circle(0% at 92% 5%);transition:clip-path .6s var(--ease);
  pointer-events:none;
  overflow-y:auto;
}
.menu.is-open{clip-path:circle(150% at 92% 5%);pointer-events:auto}
.menu a{
  font-family:var(--font-display);font-size:clamp(2rem,9vw,3.2rem);font-weight:600;
  letter-spacing:-.02em;padding:.18em 0;display:flex;align-items:baseline;gap:.5em;
  opacity:0;transform:translateY(18px);transition:.5s var(--ease);
}
.menu.is-open a{opacity:1;transform:none}
.menu.is-open a:nth-child(1){transition-delay:.12s}
.menu.is-open a:nth-child(2){transition-delay:.18s}
.menu.is-open a:nth-child(3){transition-delay:.24s}
.menu.is-open a:nth-child(4){transition-delay:.30s}
.menu.is-open a:nth-child(5){transition-delay:.36s}
.menu a .ix{font-family:var(--font-mono);font-size:.9rem;color:var(--green);opacity:.8}
.menu__foot{margin-top:auto;display:flex;flex-wrap:wrap;gap:24px;justify-content:space-between;
  font-family:var(--font-mono);font-size:.8rem;color:rgba(255,255,255,.6);padding-top:30px;border-top:1px solid var(--line-dk)}

/* ---------- reveal animations (progressive enhancement: hidden only when html.anim) ---------- */
[data-reveal]{opacity:1;transform:none}
.anim [data-reveal]{opacity:0;transform:translateY(34px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.anim [data-reveal].in{opacity:1;transform:none}
.anim [data-reveal][data-d="1"]{transition-delay:.08s}
.anim [data-reveal][data-d="2"]{transition-delay:.16s}
.anim [data-reveal][data-d="3"]{transition-delay:.24s}
.anim [data-reveal][data-d="4"]{transition-delay:.32s}
.anim [data-reveal][data-d="5"]{transition-delay:.40s}

/* line-by-line word mask reveal */
.reveal-lines{display:inline}
.reveal-lines .ln{display:block;overflow:hidden}
.reveal-lines .ln > span{display:block;transform:none}
.anim .reveal-lines .ln > span{transform:translateY(105%);transition:transform .9s var(--ease)}
.anim .reveal-lines.in .ln > span{transform:none}
.anim .reveal-lines.in .ln:nth-child(2) > span{transition-delay:.08s}
.anim .reveal-lines.in .ln:nth-child(3) > span{transition-delay:.16s}
.anim .reveal-lines.in .ln:nth-child(4) > span{transition-delay:.24s}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.001s!important;scroll-behavior:auto!important}
  .anim [data-reveal]{opacity:1;transform:none}
  .anim .reveal-lines .ln > span{transform:none}
}

/* ---------- marquee ---------- */
.marquee{display:flex;overflow:hidden;gap:0;user-select:none;-webkit-mask:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.marquee__row{display:flex;align-items:center;gap:2.4rem;padding-right:2.4rem;flex:0 0 auto;animation:marq 34s linear infinite}
.marquee:hover .marquee__row{animation-play-state:paused}
.marquee__row span{font-family:var(--font-display);font-weight:600;font-size:clamp(1.6rem,3.6vw,3rem);letter-spacing:-.02em;white-space:nowrap}
.marquee .dot{width:11px;height:11px;border-radius:50%;background:var(--green);flex:0 0 auto}
@keyframes marq{to{transform:translateX(-50%)}}

/* ---------- image frames ---------- */
.frame{position:relative;overflow:hidden;border-radius:18px;background:var(--ink-2)}
.frame image-slot{width:100%;height:100%;display:block}
.frame--tick::after{content:"";position:absolute;inset:14px;border:1px solid rgba(255,255,255,.22);border-radius:10px;pointer-events:none;mix-blend-mode:overlay}
.corner-ticks{position:relative}
.corner-ticks::before,.corner-ticks::after{content:"";position:absolute;width:14px;height:14px;pointer-events:none}
.corner-ticks::before{top:0;left:0;border-right:0;border-bottom:0}
.corner-ticks::after{bottom:0;right:0;border-left:0;border-top:0}

/* ---------- footer ---------- */
.foot{background:var(--ink);
color:#cfe0d4;position:relative;overflow:hidden}
.foot__top{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px;padding-block:clamp(56px,8vw,100px)}
.foot h4{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.24em;text-transform:uppercase;color:var(--green);font-weight:600;margin-bottom:20px}
.foot a{display:block;padding:6px 0;color:#cfe0d4;opacity:.85;transition:.3s;width:fit-content}
.foot a:hover{opacity:1;color:#fff;transform:translateX(4px)}
.foot__brand{max-width:360px}
.foot__brand img{height:54px;margin-bottom:22px}
.foot__giant{font-family:var(--font-display);font-weight:600;letter-spacing:-.03em;line-height:.85;
  font-size:clamp(3.5rem,17vw,16rem);color:#fff;opacity:.05;pointer-events:none;
  padding-block:10px 30px;text-align:center}
.foot__bar{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;align-items:center;
  border-top:1px solid var(--line-dk);padding-block:24px;font-family:var(--font-mono);font-size:.78rem;color:rgba(255,255,255,.5)}

/* ---------- wood-grain utility (real uploaded contour texture, brand-green, subtle) ---------- */
/* texture is injected as a real <img class="wg-tex"> by site.js so it renders in
   browsers AND html-to-image screenshots / PDF export (pseudo-element bg images don't capture) */
.woodgrain{position:relative;isolation:isolate}
.woodgrain > *{position:relative;z-index:2}
.wg-tex{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  z-index:0;pointer-events:none;opacity:.07;
  -webkit-mask:radial-gradient(135% 115% at 26% 32%, #000 32%, rgba(0,0,0,.3) 72%, transparent 100%);
  mask:radial-gradient(135% 115% at 26% 32%, #000 32%, rgba(0,0,0,.3) 72%, transparent 100%);
}
.woodgrain::after{
  content:"";position:absolute;z-index:0;pointer-events:none;
  width:55vw;height:55vw;right:-14vw;top:-18vw;border-radius:50%;
  background:radial-gradient(circle, rgba(90,196,94,.10), transparent 62%);
}
/* hero: a touch stronger + a slow living drift */
.hero .wg-tex{
  opacity:.07;
  -webkit-mask:radial-gradient(150% 135% at 32% 34%, #000 46%, rgba(0,0,0,.4) 80%, transparent 100%);
  mask:radial-gradient(150% 135% at 32% 34%, #000 46%, rgba(0,0,0,.4) 80%, transparent 100%);
  animation:woodDrift 50s ease-in-out infinite alternate;
}
@keyframes woodDrift{
  from{transform:scale(1.04) translate(-1.2%,-0.8%)}
  to{transform:scale(1.1) translate(1.6%,1.2%)}
}
@media (prefers-reduced-motion:reduce){
  .hero .wg-tex{animation:none}
}

/* ---------- misc tokens ---------- */
.tag{display:inline-flex;align-items:center;gap:.5em;font-family:var(--font-mono);font-size:.72rem;
  letter-spacing:.12em;text-transform:uppercase;font-weight:600;
  padding:.45em .9em;border:1px solid var(--line);border-radius:100px}
.dark .tag,.on-dark .tag{border-color:var(--line-dk)}
.rule{height:1px;background:var(--line);border:0}
.dark .rule{background:var(--line-dk)}

.num{font-family:var(--font-display);font-weight:600;line-height:.9;letter-spacing:-.03em;
  font-size:clamp(2.6rem,5.5vw,4.6rem)}
.num .u{font-size:.42em;vertical-align:.6em;margin-left:.1em;color:var(--green-deep)}
.dark .num .u,.on-dark .num .u{color:var(--green)}

/* progress bar */
.scrollbar{position:fixed;top:0;left:0;height:3px;width:0;background:var(--green);z-index:90;transition:width .1s linear}

/* grain / noise overlay */
.grain{position:fixed;inset:0;z-index:200;pointer-events:none;opacity:.04;mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}

/* ---------- certifications (shared: home + products) ---------- */
.certs__head{max-width:62ch;margin-bottom:clamp(36px,5vw,60px)}
.certs__head .h-lg{margin:.5em 0 .6em}
.certs__head p{color:#46554f;max-width:54ch}
.certs__row{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(16px,2.4vw,28px)}
.cert{display:flex;flex-direction:column;align-items:center;text-align:center;gap:20px;
  background:var(--white);border:1px solid var(--line);border-radius:18px;
  padding:clamp(26px,3vw,40px) 24px;transition:transform .5s var(--ease),box-shadow .5s var(--ease),border-color .4s}
.cert:hover{box-shadow:0 26px 54px -28px rgba(13,23,22,.32);border-color:rgba(90,196,94,.5)}
.cert__badge{height:96px;display:flex;align-items:center;justify-content:center}
.cert__badge img{max-height:96px;width:auto;object-fit:contain;filter:drop-shadow(0 6px 14px rgba(13,23,22,.10))}
.cert figcaption{display:flex;flex-direction:column;gap:5px}
.cert figcaption strong{font-family:var(--font-display);font-weight:600;font-size:1.15rem;letter-spacing:-.01em}
.cert figcaption .mono{font-size:.72rem;color:var(--green-deep);letter-spacing:.04em}
@media (max-width:560px){.certs__row{grid-template-columns:1fr}}

/* ---------- responsive ---------- */
@media (max-width:900px){
  .nav__links{display:none}
  .nav__cta{display:none}
  .nav__burger{display:flex !important}
  .foot__top{grid-template-columns:1fr 1fr;gap:36px}
  .foot__brand{grid-column:1/-1}
}
@media (max-width:560px){
  .foot__top{grid-template-columns:1fr}
}