/* =========================================================
   AL ABYAD OIL & GAS — site stylesheet
   Brand: navy #001f4d · red #cc2020 · blue #003087 · green #2e8b3f
   ========================================================= */

:root{
  --navy:#001f4d;
  --navy-800:#032a63;
  --red:#cc2020;
  --blue:#003087;
  --green:#2e8b3f;

  --ink:#15181d;
  --ink-soft:#525c6b;
  --line:#dfe3ea;
  --paper:#ffffff;
  --wash:#f5f6f9;

  --wrap:1160px;
  --gut:24px;

  --sans:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --cond:"IBM Plex Sans Condensed","IBM Plex Sans",system-ui,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  font-size:17px;
  line-height:1.65;
  color:var(--ink);
  background:var(--paper);
}
img{max-width:100%;display:block;height:auto}
a{color:var(--blue)}

h1,h2,h3,h4{font-family:var(--cond);font-weight:600;line-height:1.12;letter-spacing:-.01em;margin:0 0 .5em}
h1{font-size:clamp(2.1rem,5.2vw,3.6rem)}
h2{font-size:clamp(1.65rem,3.4vw,2.4rem)}
h3{font-size:1.22rem;line-height:1.25}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gut)}
.band{padding:76px 0}
.band--wash{background:var(--wash);border-block:1px solid var(--line)}
.band--navy{background:var(--navy);color:#fff}
.band--navy h2{color:#fff}
.band--tight{padding:52px 0}

/* --- mono eyebrow: reads like a material/spool tag --- */
.tag{
  font-family:var(--mono);
  font-size:.72rem;
  letter-spacing:.13em;
  text-transform:uppercase;
  color:var(--red);
  margin:0 0 14px;
  display:flex;align-items:center;gap:10px;
}
.tag::after{content:"";flex:1;height:1px;background:var(--line);max-width:120px}
.band--navy .tag{color:#8fb3ff}
.band--navy .tag::after{background:rgba(255,255,255,.22)}

.lede{font-size:1.1rem;color:var(--ink-soft);max-width:62ch}
.band--navy .lede{color:#c3d0e6}

/* ================= header ================= */
.site-head{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid var(--line);
}
.head-in{max-width:var(--wrap);margin:0 auto;padding:14px var(--gut);transition:padding .18s ease;
  display:flex;align-items:center;gap:20px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:inherit;margin-right:auto}
.brand img{height:112px;width:auto;transition:height .18s ease}

.nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav a{
  font-family:var(--cond);font-size:.98rem;font-weight:500;
  text-decoration:none;color:var(--ink);
  padding:9px 13px;border-radius:3px;
}
.nav a:hover{background:var(--wash);color:var(--navy)}
.nav a[aria-current="page"]{color:var(--red);box-shadow:inset 0 -2px 0 var(--red)}

.btn{
  display:inline-block;font-family:var(--cond);font-weight:600;font-size:1rem;
  text-decoration:none;padding:12px 22px;border:1px solid transparent;border-radius:3px;
  transition:background .15s,color .15s,border-color .15s;
}
.btn--solid{background:var(--red);color:#fff}
.btn--solid:hover{background:#a91a1a}
.btn--ghost{border-color:var(--line);color:var(--navy);background:#fff}
.btn--ghost:hover{border-color:var(--navy);background:var(--wash)}
.btn--onnavy{border-color:rgba(255,255,255,.4);color:#fff;background:transparent}
.btn--onnavy:hover{background:#fff;color:var(--navy);border-color:#fff}
.btn--head{padding:9px 16px;font-size:.92rem}

.nav-toggle{display:none;background:none;border:1px solid var(--line);border-radius:3px;
  padding:8px 11px;font-family:var(--mono);font-size:.72rem;letter-spacing:.1em;cursor:pointer;color:var(--ink)}

/* ================= hero ================= */
.hero{position:relative;background:var(--navy);color:#fff;overflow:hidden}
.hero img{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  opacity:.62;filter:saturate(.85)
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(98deg,rgba(0,20,50,.95) 8%,rgba(0,25,62,.82) 48%,rgba(0,31,77,.45) 100%)
}
.hero-in{position:relative;z-index:2;max-width:var(--wrap);margin:0 auto;
  padding:104px var(--gut) 92px}
.hero h1{max-width:17ch;color:#fff;margin-bottom:20px}
.hero .tag{color:#fff}
.hero .tag::after{background:rgba(255,255,255,.3)}
.hero p{font-size:1.14rem;color:#ccd8ec;max-width:56ch}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}

/* --- spec strip: the signature. traceability-tag styling --- */
.spec{background:var(--navy-800);color:#fff;border-top:1px solid rgba(255,255,255,.14)}
.spec ul{
  max-width:var(--wrap);margin:0 auto;padding:0 var(--gut);list-style:none;
  display:flex;flex-wrap:wrap
}
.spec li{
  font-family:var(--mono);font-size:.7rem;letter-spacing:.11em;text-transform:uppercase;
  padding:14px 24px 14px 0;margin-right:24px;color:#d4dff2;
  border-right:1px solid rgba(255,255,255,.16);
}
.spec li:last-child{border-right:0;margin-right:0}
.spec b{color:#fff;font-weight:600}

/* ================= generic grids ================= */
.grid{display:grid;gap:26px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}

.split{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center}
.split figure{margin:0}
.split img{border-radius:3px}

/* ---- capability card: hairline rules, no icons ---- */
.cap{border-top:2px solid var(--navy);padding-top:18px}
.cap h3{margin-bottom:8px}
.cap p{color:var(--ink-soft);font-size:.97rem}
.cap ul{margin:12px 0 0;padding:0;list-style:none}
.cap li{
  font-size:.93rem;color:var(--ink-soft);
  padding:7px 0 7px 16px;border-bottom:1px solid var(--line);position:relative
}
.cap li::before{content:"";position:absolute;left:0;top:16px;width:6px;height:1px;background:var(--red)}
.cap li:last-child{border-bottom:0}

/* ---- project card ---- */
.proj{background:#fff;border:1px solid var(--line);border-radius:3px;overflow:hidden;
  display:flex;flex-direction:column}
.proj img{aspect-ratio:4/3;object-fit:cover}
.proj-body{padding:22px}
.proj h3{margin-bottom:10px}
.proj dl{margin:14px 0 0;font-size:.88rem;border-top:1px solid var(--line);padding-top:12px}
.proj dt{font-family:var(--mono);font-size:.66rem;letter-spacing:.11em;text-transform:uppercase;
  color:var(--ink-soft);margin-top:9px}
.proj dd{margin:1px 0 0;font-weight:500}

/* ---- stat ---- */
.stat{border-left:3px solid var(--red);padding:4px 0 4px 18px}
.stat b{display:block;font-family:var(--cond);font-size:clamp(1.7rem,2.4vw,2.4rem);font-weight:700;line-height:1;color:var(--navy)}
.band--navy .stat b{color:#fff}
.stat span{font-family:var(--mono);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-soft)}
.band--navy .stat span{color:#9fb5d6}

/* ---- certification tile ---- */
.cert{background:#fff;border:1px solid var(--line);border-radius:3px;padding:22px}
.cert b{font-family:var(--cond);font-size:1.15rem;display:block;color:var(--navy)}
.cert span{font-size:.9rem;color:var(--ink-soft)}
.cert em{font-family:var(--mono);font-size:.66rem;letter-spacing:.11em;text-transform:uppercase;
  font-style:normal;color:var(--red);display:block;margin-bottom:8px}

/* ---- plain prose list ---- */
.ticks{list-style:none;margin:0;padding:0}
.ticks li{padding:11px 0 11px 22px;border-bottom:1px solid var(--line);position:relative;font-size:.98rem}
.ticks li::before{content:"";position:absolute;left:0;top:20px;width:9px;height:1px;background:var(--red)}
.band--navy .ticks li{border-color:rgba(255,255,255,.16)}

/* ---- contact rows ---- */
.crow{border-top:1px solid var(--line);padding:18px 0;display:grid;grid-template-columns:150px 1fr;gap:18px}
.crow dt{font-family:var(--mono);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-soft);padding-top:4px}
.crow dd{margin:0;font-size:1.02rem}
.crow a{color:var(--navy);text-decoration:none;border-bottom:1px solid var(--line)}
.crow a:hover{color:var(--red);border-color:var(--red)}

/* ================= footer ================= */
.site-foot{background:var(--navy);color:#c3d0e6;padding:54px 0 0;font-size:.94rem}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:38px}
.site-foot h4{font-family:var(--cond);color:#fff;font-size:1rem;letter-spacing:.04em;margin:0 0 14px}
.site-foot a{color:#c3d0e6;text-decoration:none}
.site-foot a:hover{color:#fff}
.site-foot ul{list-style:none;margin:0;padding:0}
.site-foot li{margin-bottom:8px}
.foot-logo{height:104px;width:auto;background:#fff;padding:12px 16px;border-radius:4px;margin-bottom:18px}
.foot-base{border-top:1px solid rgba(255,255,255,.16);margin-top:44px;padding:18px 0;
  font-family:var(--mono);font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;color:#8fa4c4}

/* accessibility */
a:focus-visible,button:focus-visible{outline:2px solid var(--red);outline-offset:3px}
.skip{position:absolute;left:-9999px}
.skip:focus{left:12px;top:12px;z-index:99;background:#fff;padding:10px 16px;border:2px solid var(--red)}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* ================= responsive ================= */
@media (max-width:900px){
  .g4{grid-template-columns:repeat(2,1fr)}
  .g3{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:30px}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:720px){
  body{font-size:16px}
  .band{padding:52px 0}
  .hero-in{padding:70px var(--gut) 58px}
  .brand img{height:74px}
  .nav-toggle{display:block}
  .nav{
    display:none;position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--line);padding:8px 12px 14px;
  }
  .nav.open{display:flex}
  .nav a{padding:13px 10px;border-bottom:1px solid var(--line)}
  .nav a[aria-current="page"]{box-shadow:none}
  .btn--head{display:none}
  .g2,.g3,.g4{grid-template-columns:1fr}
  .spec li{border-right:0;padding:9px 0;margin-right:0;width:100%}
  .crow{grid-template-columns:1fr;gap:4px}
  .foot-grid{grid-template-columns:1fr;gap:30px}
}

/* header shrinks once the page scrolls, so the logo reads large on arrival */
.site-head.is-scrolled .brand img{height:56px}
.site-head.is-scrolled .head-in{padding-top:8px;padding-bottom:8px}
@media (max-width:720px){
  .site-head.is-scrolled .brand img{height:46px}
}