/* =========================================================
   ATLANTIC CHEMEX — Shared Design System
   Charcoal base · navy accents · red action · condensed type
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Saira+Condensed:wght@400;500;600;700;800&family=Barlow:ital,wght@0,400;0,500;0,600;0,700;1,400&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root{
  /* surfaces */
  --ink:#0c0e11;
  --charcoal:#15181d;
  --charcoal-2:#1b1f25;
  --charcoal-3:#242a31;
  --raise:#2c333c;
  --navy:#0e2236;
  --navy-2:#16314e;
  /* action — VERSION A: premium industrial red (default) */
  --red:#c1121f;
  --red-2:#e11d28;
  --red-deep:#8b0d16;
  /* text */
  --white:#f3f5f7;
  --soft:#c7ccd2;
  --mute:#8b939d;
  --faint:#5f6770;
  /* lines */
  --line:rgba(255,255,255,.09);
  --line-2:rgba(255,255,255,.16);
  /* type */
  --display:"Saira Condensed",system-ui,sans-serif;
  --body:"Barlow",system-ui,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,monospace;
  /* layout */
  --wrap:1280px;
  --gut:clamp(20px,5vw,64px);
  --header-h:108px;
}

/* ===== VERSION B: Energy Green accent (opt-in via body[data-theme=green]) ===== */
body[data-theme="green"]{
  --red:#22c55e;
  --red-2:#34d77a;
  --red-deep:#16a34a;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--body);
  background:var(--charcoal);
  color:var(--soft);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}

/* ---- typography helpers ---- */
h1,h2,h3,h4{font-family:var(--display);color:var(--white);line-height:.98;font-weight:700;letter-spacing:.01em;text-transform:uppercase}
.eyebrow{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.28em;
  text-transform:uppercase;
  color:var(--red-2);
  font-weight:500;
  display:inline-flex;
  align-items:center;
  gap:0;
}
.eyebrow.center{justify-content:center}
p{text-wrap:pretty}
.lead{font-size:clamp(17px,1.5vw,20px);color:var(--soft)}

.wrap{max-width:var(--wrap);margin:0 auto;padding-inline:var(--gut)}
.section{padding-block:clamp(64px,9vw,128px)}

/* ===================== UTILITY BAR ===================== */
.util{
  background:var(--ink);
  border-bottom:1px solid var(--line);
  font-family:var(--mono);
  font-size:12.5px;
  letter-spacing:.04em;
  color:var(--mute);
}
.util .wrap{display:flex;align-items:center;justify-content:space-between;height:42px;gap:18px}
.util a{color:var(--mute);transition:color .2s}
.util a:hover{color:var(--white)}
.util-left{display:flex;gap:26px;align-items:center}
.util-left .loc{color:var(--faint)}
.util-right{display:flex;gap:22px;align-items:center}
.util .tf{color:var(--white)}
.util .tf b{color:var(--red-2);font-weight:600}
@media(max-width:860px){.util-left .loc,.util .email{display:none}}

/* ===================== HEADER / NAV ===================== */
.site-head{
  position:sticky;top:0;z-index:80;
  background:rgba(18,21,26,.92);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.head-row{display:flex;align-items:center;justify-content:space-between;height:var(--header-h);gap:24px}

/* wordmark / logo */
.brand{display:flex;align-items:center;gap:14px;flex-shrink:0}
.brand .logo-img{height:46px;width:auto;display:block}
.foot .brand .logo-img{height:52px}
@media(max-width:1240px){.brand .logo-img{height:40px}}
/* legacy placeholder mark (unused) */
.brand .logo-mark{height:46px;width:auto;flex-shrink:0;display:block}
.foot .brand .logo-mark{height:44px}
/* legacy placeholder mark (unused once SVG logo is in) */
.brand .mark{
  width:46px;height:46px;flex-shrink:0;
  background:var(--red);
  display:grid;place-items:center;
  clip-path:polygon(0 0,100% 0,100% 70%,70% 100%,0 100%);
}
.brand .mark span{font-family:var(--display);font-weight:800;font-size:26px;color:#fff;line-height:1;transform:translateY(-1px)}
.brand .wm{line-height:1}
.brand .wm b{font-family:var(--display);font-weight:700;font-size:24px;letter-spacing:.02em;color:var(--white);display:block;text-transform:uppercase}
.brand .wm small{font-family:var(--mono);font-size:9.5px;letter-spacing:.34em;color:var(--mute);text-transform:uppercase}

/* nav */
.nav{display:flex;align-items:center;gap:6px}
.nav > li{position:relative}
.nav > li > a{
  display:flex;align-items:center;gap:7px;
  font-family:var(--display);font-weight:600;font-size:15px;letter-spacing:.03em;text-transform:uppercase;
  color:var(--soft);padding:14px 12px;transition:color .18s;white-space:nowrap;
}
.nav > li > a:hover,.nav > li.active > a{color:var(--white)}
.nav > li.has > a::after{display:none}
.nav > li.has::before{ /* hover bridge */
  content:"";position:absolute;left:0;right:0;top:100%;height:14px;
}

/* dropdown */
.drop{
  position:absolute;top:calc(100% + 12px);left:50%;transform:translateX(-50%) translateY(8px);
  min-width:248px;background:var(--charcoal-2);border:1px solid var(--line-2);
  box-shadow:0 28px 60px rgba(0,0,0,.55);
  opacity:0;visibility:hidden;transition:.2s;padding:8px;
  border-top:3px solid var(--red);
}
.nav > li.has:hover .drop{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
/* right-aligned dropdown (for the More menu near the right edge) */
.drop.right{left:auto;right:0;transform:translateX(0) translateY(8px)}
.nav > li.has:hover .drop.right{transform:translateX(0) translateY(0)}
.drop a{
  display:block;font-family:var(--body);font-weight:500;font-size:14.5px;letter-spacing:.01em;text-transform:none;
  color:var(--soft);padding:11px 14px;transition:.16s;border-left:2px solid transparent;
}
.drop a:hover{background:var(--charcoal-3);color:var(--white);border-left-color:var(--red)}

/* quote btn */
.btn{
  --bg:var(--red);--fg:#fff;
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--display);font-weight:600;font-size:15px;letter-spacing:.06em;text-transform:uppercase;
  background:var(--bg);color:var(--fg);
  padding:14px 24px;border:0;cursor:pointer;
  clip-path:polygon(0 0,100% 0,100% 100%,10px 100%,0 calc(100% - 10px));
  transition:background .18s,transform .18s;
}
.btn:hover{background:var(--red-2);transform:translateY(-1px)}
.btn svg{width:15px;height:15px}
.btn.ghost{--bg:transparent;--fg:var(--white);border:1px solid var(--line-2)}
.btn.ghost:hover{--bg:rgba(255,255,255,.06);border-color:var(--white)}
.btn.lg{padding:18px 34px;font-size:17px}
.head-cta{flex-shrink:0}

/* header + utility bar get a wider container than body sections so the nav never overflows */
.site-head .wrap,.util .wrap{max-width:1460px;padding-inline:clamp(20px,3.5vw,40px)}

/* burger */
.burger{display:none;background:none;border:1px solid var(--line-2);width:48px;height:46px;cursor:pointer;flex-direction:column;gap:5px;align-items:center;justify-content:center}
.burger span{width:22px;height:2px;background:var(--white);transition:.2s}

/* mobile panel */
.mnav{display:none}

@media(max-width:1240px){
  :root{--header-h:84px}
  .nav,.head-cta{display:none}
  .burger{display:flex}
  .mnav{
    display:block;position:fixed;inset:var(--header-h) 0 0 auto;width:min(420px,86vw);
    background:var(--charcoal-2);border-left:1px solid var(--line-2);
    transform:translateX(100%);transition:transform .3s;z-index:90;overflow-y:auto;padding:14px 14px 40px;
  }
  body.menu-open .mnav{transform:translateX(0)}
  body.menu-open{overflow:hidden}
  .mnav .m-cta{margin:14px 8px}
  .mnav details{border-bottom:1px solid var(--line)}
  .mnav summary{
    list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;
    font-family:var(--display);font-weight:600;font-size:18px;letter-spacing:.03em;text-transform:uppercase;color:var(--white);padding:16px 8px;
  }
  .mnav summary::-webkit-details-marker{display:none}
  .mnav summary .pl{color:var(--red-2);font-family:var(--mono);font-weight:400}
  .mnav details[open] summary .pl{transform:rotate(45deg)}
  .mnav .sub a{display:block;color:var(--soft);padding:10px 8px 10px 22px;font-size:15px}
  .mnav > a{display:block;font-family:var(--display);font-weight:600;font-size:18px;letter-spacing:.03em;text-transform:uppercase;color:var(--white);padding:16px 8px;border-bottom:1px solid var(--line)}
  .scrim{position:fixed;inset:0;background:rgba(0,0,0,.5);opacity:0;visibility:hidden;transition:.3s;z-index:85}
  body.menu-open .scrim{opacity:1;visibility:visible}
}

/* ===================== BUTTONS GROUP ===================== */
.btn-row{display:flex;flex-wrap:wrap;gap:14px}

/* ===================== YOUTUBE LIGHTBOX ===================== */
.yt-modal{position:fixed;inset:0;z-index:200;display:none;align-items:center;justify-content:center;padding:24px}
.yt-modal.open{display:flex}
.yt-modal-scrim{position:absolute;inset:0;background:rgba(6,7,9,.86);backdrop-filter:blur(3px)}
.yt-modal-box{position:relative;width:min(960px,100%);z-index:1}
.yt-frame{position:relative;aspect-ratio:16/9;width:100%;background:#000;border:1px solid var(--line-2);box-shadow:0 30px 90px rgba(0,0,0,.6)}
.yt-frame iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.yt-close{position:absolute;top:-46px;right:0;width:38px;height:38px;background:transparent;border:0;color:#fff;font-size:34px;line-height:1;cursor:pointer;opacity:.8;transition:.2s}
.yt-close:hover{opacity:1;color:var(--red-2)}
.yt-open{display:inline-block;margin-top:14px;font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--soft)}
.yt-open:hover{color:var(--red-2)}

/* ===================== FOOTER ===================== */
.foot{background:var(--ink);border-top:1px solid var(--line);padding-block:64px 0}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.foot h4{font-size:15px;letter-spacing:.18em;color:var(--mute);font-family:var(--mono);font-weight:500;text-transform:uppercase;margin-bottom:20px}
.foot .brand{margin-bottom:20px}
.foot ul{list-style:none;display:flex;flex-direction:column;gap:11px}
.foot li a{color:var(--soft);font-size:15px;transition:color .16s}
.foot li a:hover{color:var(--red-2)}
.foot .addr{font-size:15px;line-height:1.9;color:var(--soft)}
.foot .addr b{color:var(--white);font-weight:600}
.foot .addr a{color:var(--soft)}
.foot .addr a:hover{color:var(--red-2)}
.foot-soc{display:flex;gap:10px;margin-top:18px}
.foot-soc a{width:40px;height:40px;border:1px solid var(--line-2);display:grid;place-items:center;color:var(--soft);transition:.18s}
.foot-soc a:hover{background:var(--red);border-color:var(--red);color:#fff}
.foot-bar{border-top:1px solid var(--line);margin-top:54px;padding-block:24px;font-family:var(--mono);font-size:12px;letter-spacing:.05em;color:var(--faint);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
@media(max-width:880px){.foot-grid{grid-template-columns:1fr 1fr;gap:36px}}
@media(max-width:520px){.foot-grid{grid-template-columns:1fr}}

/* ===================== PLACEHOLDER ===================== */
.ph{
  position:relative;background:
    repeating-linear-gradient(135deg,rgba(255,255,255,.035) 0 12px,transparent 12px 24px),
    var(--charcoal-3);
  border:1px solid var(--line);display:grid;place-items:center;overflow:hidden;
}
.ph span{font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--faint);text-align:center;padding:14px}

/* ===================== CARDS / GRID UTILS ===================== */
.cluster{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.chip{font-family:var(--mono);font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--soft);border:1px solid var(--line-2);padding:7px 13px}

/* reveal animation */
@media(prefers-reduced-motion:no-preference){
  .reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
  .reveal.in{opacity:1;transform:none}
}