/* ============================================================
   AiDEX Energy Group - Site styles
   Depends on css/tokens.css (loaded first).
   ============================================================ */

/* ---------- Layout primitives ---------- */
.container{
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.section{ padding-block:var(--section-y); }
.hr{ height:1px; background:var(--line); border:0; }

/* ---------- Typographic utilities ---------- */
.eyebrow{
  display:inline-flex; align-items:center; gap:0.7em;
  font-family:var(--font-mono); font-weight:500;
  font-size:var(--step--1); letter-spacing:0.2em; text-transform:uppercase;
  color:var(--moss);
}
.eyebrow::before{
  content:""; width:1.6em; height:1px; background:var(--gold);
}
.index{
  font-family:var(--font-mono); font-size:var(--step--1);
  letter-spacing:0.16em; text-transform:uppercase; color:var(--moss);
}
.index b{ color:var(--gold); font-weight:500; margin-right:0.5em; }

.display{
  font-family:var(--font-display); font-weight:340;
  font-size:var(--display); line-height:1.02; letter-spacing:-0.02em;
  font-optical-sizing:auto;
}
.display em{ font-style:italic; font-weight:340; }
.lede{
  font-size:var(--step-1); line-height:1.5; color:var(--cream-2);
  max-width:46ch;
}
.mono{ font-family:var(--font-mono); }

/* ---------- Buttons ---------- */
.btn{
  --btn-bg:transparent;
  display:inline-flex; align-items:center; gap:0.6em;
  font-family:var(--font-body); font-weight:600; font-size:var(--step-0);
  letter-spacing:0.01em; line-height:1;
  padding:0.95em 1.5em; border-radius:3px; cursor:pointer;
  border:1px solid transparent; background:var(--btn-bg); color:var(--cream);
  transition:background var(--dur) var(--ease), color var(--dur) var(--ease),
             border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.btn:hover{ transform:translateY(-1px); }
.btn--gold{ --btn-bg:var(--gold); color:var(--forest-deep); border-color:var(--gold); }
.btn--gold:hover{ --btn-bg:#ecc463; }
.btn--ghost{ border-color:rgba(242,238,227,0.34); color:var(--cream); }
.btn--ghost:hover{ border-color:var(--cream); background:rgba(242,238,227,0.06); }
.btn .arr{ transition:transform var(--dur) var(--ease); }
.btn:hover .arr{ transform:translateX(3px); }

/* ---------- Grain overlay (subtle, tactile) ---------- */
.grain{
  position:fixed; inset:0; z-index:1; pointer-events:none;
  opacity:0.05; mix-blend-mode:overlay;
  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='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ============================================================
   NAV - sticky, transparent over hero, solid on scroll
   ============================================================ */
.nav{
  position:fixed; inset:0 0 auto 0; z-index:50;
  display:flex; align-items:center; justify-content:space-between;
  gap:2rem; padding:1.1rem var(--gutter);
  transition:background var(--dur) var(--ease), border-color var(--dur) var(--ease),
             padding var(--dur) var(--ease);
  border-bottom:1px solid transparent;
}
.nav.is-scrolled{
  background:rgba(14,42,28,0.86);
  backdrop-filter:saturate(140%) blur(10px);
  -webkit-backdrop-filter:saturate(140%) blur(10px);
  border-bottom-color:var(--line);
  padding-block:0.8rem;
}
.nav__brand .brand{ --brand-size:1.7rem; color:var(--cream); }
.nav__links{ display:flex; align-items:center; gap:2rem; }
.nav__link{
  position:relative; font-size:var(--step-0); color:var(--cream);
  padding:0.3em 0; opacity:0.86; transition:opacity var(--dur) var(--ease);
}
.nav__link::after{
  content:""; position:absolute; left:0; bottom:-2px; height:1px; width:0;
  background:var(--gold); transition:width var(--dur) var(--ease);
}
.nav__link:hover{ opacity:1; }
.nav__link:hover::after,.nav__link[aria-current="page"]::after{ width:100%; }
.nav__cta{ display:flex; align-items:center; gap:1.25rem; }
.nav__burger{ display:none; }

@media (max-width:900px){
  .nav__cta .btn{ display:none; }   /* desktop CTA hidden on mobile; the in-menu CTA is used instead */
  .nav__burger{
    display:inline-flex; flex-direction:column; gap:5px; width:44px; height:44px;
    align-items:center; justify-content:center; background:none; border:0; cursor:pointer;
    position:relative; z-index:46;   /* stay above the overlay so it works as the close control */
  }
  .nav__burger span{ width:24px; height:1.5px; background:var(--cream); transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease); }
  .nav.is-open .nav__burger span:nth-child(1){ transform:translateY(6.5px) rotate(45deg); }
  .nav.is-open .nav__burger span:nth-child(2){ opacity:0; }
  .nav.is-open .nav__burger span:nth-child(3){ transform:translateY(-6.5px) rotate(-45deg); }

  .nav__menu{
    position:fixed; inset:0; z-index:45;
    background:var(--forest-deep);
    display:flex; flex-direction:column; justify-content:center; gap:1.75rem;
    padding:calc(var(--gutter) + 4.5rem) var(--gutter) calc(var(--gutter) + 2rem);
    transform:translateY(-100%); transition:transform 460ms var(--ease);
    overflow-y:auto;
  }
  .nav.is-open .nav__menu{ transform:translateY(0); }
  .nav__menu .nav__links{
    display:flex; flex-direction:column; align-items:flex-start; gap:0.5rem;
  }
  .nav__menu .nav__link{
    font-family:var(--font-display); font-size:clamp(1.9rem,8vw,2.75rem); opacity:1;
    display:flex; align-items:center; min-height:44px; padding:0.2em 0;
  }
  .nav__menu .nav__social{ opacity:1; min-height:44px; margin-top:0.5rem; }
  .nav__menu .nav__social svg{ width:24px; height:24px; }
  .nav__menu .btn{ display:inline-flex; align-self:flex-start; margin-top:1.5rem; min-height:44px; }
}
@media (min-width:901px){
  .nav__menu{ display:contents; }
  .nav__menu > .btn{ display:none; }   /* in-menu CTA is mobile-only; desktop uses .nav__cta */
}

/* ============================================================
   HERO
   ============================================================ */
.hero{
  position:relative; isolation:isolate;
  min-height:100svh; display:grid; align-items:end;
  padding-block:9rem clamp(2.5rem,5vw,4.5rem);
  overflow:hidden;
}
.hero__media{ position:absolute; inset:0; z-index:-2; }
.hero__media img{
  width:100%; height:100%; object-fit:cover; object-position:center 35%;
  /* grade toward forest palette: desaturate, deepen, cool the shadows */
  filter:saturate(0.82) brightness(0.74) contrast(1.06) hue-rotate(-6deg);
}
.hero__overlay{
  position:absolute; inset:0; z-index:-1;
  background:
    linear-gradient(180deg, rgba(14,42,28,0.55) 0%, rgba(14,42,28,0.18) 32%, rgba(14,42,28,0.78) 92%),
    linear-gradient(90deg, rgba(14,42,28,0.82) 0%, rgba(14,42,28,0.28) 48%, rgba(14,42,28,0.08) 100%);
}
.hero__inner{ width:100%; max-width:var(--maxw); margin-inline:auto; padding-inline:var(--gutter); }
.hero__eyebrow{ margin-bottom:clamp(1.4rem,3vw,2.4rem); }
.hero__title{ max-width:18ch; margin-bottom:1.6rem; color:var(--cream); }
.hero__sub{ margin-bottom:2.4rem; }
.hero__actions{ display:flex; flex-wrap:wrap; gap:1rem; align-items:center; }
.hero__coord{
  position:absolute; right:var(--gutter); bottom:clamp(2.5rem,5vw,4.5rem); z-index:1;
  font-family:var(--font-mono); font-size:var(--step--1); letter-spacing:0.12em;
  color:var(--moss); writing-mode:vertical-rl; text-orientation:mixed;
}
@media (max-width:760px){
  .hero__coord{ writing-mode:horizontal-tb; position:static; margin-top:2.5rem; }
}

/* ============================================================
   BY THE NUMBERS
   ============================================================ */
.numbers{ background:var(--forest-deep); }
.numbers__head{
  display:flex; flex-wrap:wrap; justify-content:space-between; align-items:flex-end;
  gap:1.5rem; margin-bottom:clamp(2.5rem,5vw,4rem);
}
.numbers__lead{ font-family:var(--font-display); font-weight:340; font-size:var(--step-2); max-width:18ch; line-height:1.12; }
.stats{
  display:grid; grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);
}
.stat{
  padding:clamp(1.8rem,3vw,2.6rem) clamp(1.4rem,2.2vw,2.2rem);
  border-right:1px solid var(--line);
  display:flex; flex-direction:column; align-items:center; text-align:center;
}
.stat:last-child{ border-right:0; }
.stat__num{
  font-family:var(--font-display); font-weight:330;
  font-size:clamp(2.6rem,5.5vw,4.6rem); line-height:1; letter-spacing:-0.02em;
  color:var(--cream);
}
.stat__num .u{ color:var(--gold); }
.stat__label{
  margin-top:1rem; font-family:var(--font-mono); font-size:var(--step--1);
  letter-spacing:0.1em; text-transform:uppercase; color:var(--moss); line-height:1.5;
}
.stat__label a{ color:var(--moss); border-bottom:1px solid var(--line); }
.stat__label a:hover{ color:var(--cream); }
@media (max-width:860px){
  .stats{ grid-template-columns:repeat(2,1fr); }
  .stat:nth-child(2){ border-right:0; }
  .stat:nth-child(1),.stat:nth-child(2){ border-bottom:1px solid var(--line); }
}
@media (max-width:480px){
  .stats{ grid-template-columns:1fr; }
  .stat{ border-right:0; border-bottom:1px solid var(--line); }
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer{ background:var(--forest-deep); border-top:1px solid var(--line); padding-block:clamp(3.5rem,6vw,6rem) 2.5rem; }
.footer__top{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1.3fr; gap:2.5rem; }
.footer__brand .brand{ --brand-size:1.5rem; }
.footer__tagline{ margin-top:1.4rem; color:var(--moss); max-width:30ch; font-size:var(--step-0); }
.footer__col h4{
  font-family:var(--font-mono); font-weight:500; font-size:var(--step--1);
  letter-spacing:0.16em; text-transform:uppercase; color:var(--moss); margin-bottom:1.2rem;
}
.footer__col li{ margin-bottom:0.7rem; }
.footer__col a,.footer__col address{ color:var(--cream-2); font-style:normal; opacity:0.9; transition:color var(--dur) var(--ease); }
.footer__col a:hover{ color:var(--gold); }
.footer__office{ line-height:1.7; font-size:var(--step-0); }
.footer__bottom{
  margin-top:clamp(2.5rem,5vw,4rem); padding-top:1.6rem; border-top:1px solid var(--line);
  display:flex; flex-wrap:wrap; justify-content:space-between; gap:1rem;
  font-family:var(--font-mono); font-size:var(--step--1); color:var(--moss); letter-spacing:0.06em;
}
.footer__fsc{ display:flex; align-items:center; gap:0.6em; }
.footer__fsc b{ color:var(--cream-2); font-weight:500; }
@media (max-width:900px){ .footer__top{ grid-template-columns:1fr 1fr; gap:2rem; } .footer__brand{ grid-column:1 / -1; } }
@media (max-width:520px){ .footer__top{ grid-template-columns:1fr; } }

/* ============================================================
   Scroll reveal
   ============================================================ */
/* Hiding is gated behind .js so the page is fully visible without JavaScript */
.js [data-reveal]{ opacity:0; transform:translateY(20px); transition:opacity 760ms var(--ease), transform 760ms var(--ease); }
[data-reveal].is-in{ opacity:1; transform:none; }
[data-reveal-delay="1"]{ transition-delay:80ms; }
[data-reveal-delay="2"]{ transition-delay:160ms; }
[data-reveal-delay="3"]{ transition-delay:240ms; }
@media (prefers-reduced-motion:reduce){
  [data-reveal]{ opacity:1; transform:none; transition:none; }
}