/* ============================================
   CBL ROOFING — Design tokens
   Steel truss engineering meets Ghanaian construction
   ============================================ */
:root{
  --steel:      #163257;   /* deep steel-blue, primary */
  --steel-2:    #1F4571;   /* secondary panel blue */
  --truss:      #2E86D8;   /* bright galvanized truss blue (accent) */
  --safety:     #E8622C;   /* safety orange — CTA / alert accent */
  --charcoal:   #12151A;   /* near-black bg for contrast sections */
  --concrete:   #6B7280;   /* mid grey */
  --line:       #29405E;   /* hairline on dark */
  --off:        #EEF1F4;   /* cool off-white bg */
  --paper:      #FFFFFF;

  --display: 'Oswald', 'Arial Narrow', sans-serif;
  --body: 'Inter', -apple-system, sans-serif;
  --mono: 'IBM Plex Mono', monospace;

  --pitch: 4vw; /* roof-pitch angle unit used for clip-paths */
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--body);
  background:var(--off);
  color:var(--steel);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,video{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
h1,h2,h3,h4{font-family:var(--display);text-transform:uppercase;letter-spacing:0.02em;margin:0;}
p{margin:0;line-height:1.6;}
.container{max-width:1180px;margin:0 auto;padding:0 24px;}
.eyebrow{
  font-family:var(--mono);
  font-size:12.5px;
  letter-spacing:0.18em;
  text-transform:uppercase;
  color:var(--truss);
  display:flex;align-items:center;gap:10px;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:26px;height:2px;background:var(--safety);
  display:inline-block;
}
.btn{
  font-family:var(--mono);
  font-size:14px;
  letter-spacing:0.05em;
  text-transform:uppercase;
  padding:15px 28px;
  border-radius:2px;
  display:inline-flex;
  align-items:center;
  gap:10px;
  border:1.5px solid transparent;
  cursor:pointer;
  transition:transform .18s ease, box-shadow .18s ease, background .18s ease;
}
.btn-primary{background:var(--safety);color:#fff;}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 24px -8px rgba(232,98,44,.55);}
.btn-ghost{border-color:rgba(255,255,255,.4);color:#fff;}
.btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.08);}
.btn-dark{border-color:var(--steel);color:var(--steel);}
.btn-dark:hover{background:var(--steel);color:#fff;}

/* ============ visually-hidden / focus ============ */
.vh{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);}
a:focus-visible,button:focus-visible{outline:3px solid var(--safety);outline-offset:3px;}

/* ============================================
   TRUSS LINE MOTIF — repeating triangular svg
   ============================================ */
.truss-rule{
  height:34px;
  width:100%;
  background-image:
    linear-gradient(115deg, transparent 48%, var(--truss) 48%, var(--truss) 52%, transparent 52%),
    linear-gradient(65deg, transparent 48%, var(--truss) 48%, var(--truss) 52%, transparent 52%);
  background-size:34px 34px;
  background-repeat:repeat-x;
  opacity:.55;
}
.truss-rule.dark{opacity:.25;}

/* ============================================
   NAV
   ============================================ */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 24px;
  background:linear-gradient(to bottom, rgba(10,16,24,.85), transparent);
  transition:background .3s ease, padding .3s ease, box-shadow .3s ease;
}
.nav.scrolled{
  background:rgba(10,16,24,.96);
  padding:12px 24px;
  box-shadow:0 6px 24px -10px rgba(0,0,0,.5);
  backdrop-filter:blur(6px);
}
.nav-brand{
  display:flex;align-items:center;gap:10px;
  color:#fff;font-family:var(--display);
  font-size:20px;letter-spacing:.03em;
}
.nav-brand .mark{color:var(--safety);}
.nav-links{display:flex;gap:28px;align-items:center;}
.nav-links a{
  color:#dfe6ee;font-family:var(--mono);font-size:12.5px;
  letter-spacing:.08em;text-transform:uppercase;
  position:relative;padding:4px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--safety);transition:width .2s ease;
}
.nav-links a:hover::after{width:100%;}
.nav-cta{
  font-family:var(--mono);font-size:13px;color:#fff;
  border:1.5px solid var(--truss);padding:9px 18px;border-radius:2px;
  display:flex;align-items:center;gap:8px;
}
.nav-cta:hover{background:var(--truss);}
.nav-toggle{display:none;background:none;border:0;color:#fff;font-size:26px;cursor:pointer;}

/* ============================================
   HERO
   ============================================ */
.hero{
  position:relative;
  min-height:100vh;
  display:flex;
  align-items:flex-end;
  color:#fff;
  overflow:hidden;
  background:var(--charcoal);
}
.hero-media{position:absolute;inset:0;z-index:0;}
.hero-media img{width:100%;height:100%;object-fit:cover;}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg, rgba(10,16,24,.55) 0%, rgba(10,16,24,.35) 40%, rgba(10,16,24,.92) 100%);
}
.hero-truss-overlay{
  position:absolute;inset:0;z-index:1;pointer-events:none;
  opacity:.16;
  background-image:
    linear-gradient(115deg, transparent 48.5%, #ffffff 48.5%, #ffffff 51.5%, transparent 51.5%),
    linear-gradient(65deg, transparent 48.5%, #ffffff 48.5%, #ffffff 51.5%, transparent 51.5%);
  background-size:64px 64px;
}
.hero-content{
  position:relative;z-index:2;
  padding:180px 0 90px;
  width:100%;
}
.hero-kicker{
  font-family:var(--mono);font-size:13px;letter-spacing:.2em;
  color:var(--truss);text-transform:uppercase;margin-bottom:22px;
  display:flex;align-items:center;gap:12px;
}
.hero-kicker .dot{width:8px;height:8px;background:var(--safety);border-radius:50%;display:inline-block;box-shadow:0 0 0 4px rgba(232,98,44,.25);}
.hero h1{
  font-size:clamp(48px, 9vw, 108px);
  line-height:.92;
  color:#fff;
  margin-bottom:22px;
}
.hero h1 span{color:var(--truss);}
.hero-sub{
  max-width:560px;
  font-size:19px;
  color:#cbd6e2;
  margin-bottom:38px;
}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:64px;}
.hero-stats{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border-top:1px solid rgba(255,255,255,.18);
  padding-top:28px;
  gap:20px;
}
.hstat b{
  display:block;font-family:var(--mono);font-size:clamp(22px,3vw,34px);
  color:#fff;font-weight:600;
}
.hstat span{
  font-size:12px;color:#9fb0c2;letter-spacing:.04em;text-transform:uppercase;
}

/* ============================================
   MARQUEE / TRUST BAR
   ============================================ */
.trustbar{
  background:var(--steel);
  color:#fff;
  padding:22px 0;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.trustbar .track{
  display:flex;gap:64px;
  white-space:nowrap;
  animation:scroll-x 26s linear infinite;
  width:max-content;
}
.trustbar span{
  font-family:var(--mono);font-size:13.5px;letter-spacing:.1em;text-transform:uppercase;
  display:flex;align-items:center;gap:14px;color:#cdd9e5;
}
.trustbar span::before{content:"✦";color:var(--safety);}
@keyframes scroll-x{
  from{transform:translateX(0);}
  to{transform:translateX(-50%);}
}
@media (prefers-reduced-motion:reduce){
  .trustbar .track{animation:none;}
}

/* ============================================
   SECTION HEADERS
   ============================================ */
.section{padding:110px 0;}
.section-tight{padding:80px 0;}
.section-head{
  display:flex;justify-content:space-between;align-items:flex-end;
  gap:40px;margin-bottom:56px;flex-wrap:wrap;
}
.section-head h2{
  font-size:clamp(32px,4.2vw,52px);
  color:var(--steel);
  line-height:1.02;
}
.section-head p{max-width:420px;color:var(--concrete);font-size:15.5px;}
.on-dark .section-head h2{color:#fff;}
.on-dark .section-head p{color:#a9b6c4;}

/* ============================================
   SERVICES
   ============================================ */
.services{background:var(--paper);}
.svc-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:#dfe3e8;
  border:1px solid #dfe3e8;
}
.svc-card{
  background:#fff;
  padding:34px 26px;
  min-height:210px;
  display:flex;flex-direction:column;justify-content:space-between;
  transition:background .2s ease;
  position:relative;
}
.svc-card:hover{background:var(--steel);}
.svc-card:hover .svc-num,
.svc-card:hover h3,
.svc-card:hover p{color:#fff;}
.svc-card:hover .svc-icon{border-color:var(--truss);color:var(--truss);}
.svc-num{
  font-family:var(--mono);font-size:12px;color:#b7bec6;
  position:absolute;top:18px;right:20px;
}
.svc-icon{
  width:44px;height:44px;border:1.5px solid var(--steel);border-radius:2px;
  display:flex;align-items:center;justify-content:center;
  color:var(--steel);margin-bottom:26px;
}
.svc-icon svg{width:22px;height:22px;}
.svc-card h3{font-size:16.5px;color:var(--steel);margin-bottom:8px;letter-spacing:.01em;}
.svc-card p{font-size:13.5px;color:var(--concrete);}

/* ============================================
   PROCESS (real build sequence — numbering earned)
   ============================================ */
.process{background:var(--charcoal);color:#fff;}
.proc-row{
  display:grid;
  grid-template-columns:0.85fr 1.15fr;
  gap:0;
  border-top:1px solid var(--line);
}
.proc-row:last-child{border-bottom:1px solid var(--line);}
.proc-info{padding:44px 40px 44px 0;display:flex;flex-direction:column;justify-content:center;}
.proc-index{
  font-family:var(--mono);font-size:15px;color:var(--truss);margin-bottom:14px;
}
.proc-info h3{font-size:clamp(22px,2.6vw,30px);color:#fff;margin-bottom:14px;}
.proc-info p{color:#a9b6c4;font-size:15px;max-width:440px;}
.proc-media{position:relative;min-height:280px;overflow:hidden;}
.proc-media img{width:100%;height:100%;object-fit:cover;min-height:280px;}
.proc-row:nth-child(even) .proc-info{order:2;padding:44px 0 44px 40px;}
.proc-row:nth-child(even) .proc-media{order:1;}

/* ============================================
   GALLERY
   ============================================ */
.gallery{background:var(--off);}
.gal-grid{
  display:grid;
  grid-template-columns:repeat(6,1fr);
  grid-auto-rows:130px;
  gap:8px;
}
.gal-item{
  position:relative;overflow:hidden;cursor:pointer;
  background:#0e1420;
  border-radius:2px;
}
.gal-item img,.gal-item video{
  width:100%;height:100%;object-fit:cover;
  transition:transform .5s ease;
}
.gal-item:hover img,.gal-item:hover video{transform:scale(1.06);}
.gal-item .play{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  background:rgba(10,16,24,.28);
}
.gal-item .play svg{width:38px;height:38px;filter:drop-shadow(0 2px 6px rgba(0,0,0,.5));}
.gal-item .tag{
  position:absolute;bottom:8px;left:10px;
  font-family:var(--mono);font-size:10.5px;color:#fff;
  letter-spacing:.08em;text-transform:uppercase;
  background:rgba(10,16,24,.55);padding:3px 8px;border-radius:2px;
}
.gi-a{grid-column:span 2;grid-row:span 2;}
.gi-b{grid-column:span 2;grid-row:span 1;}
.gi-c{grid-column:span 2;grid-row:span 2;}
.gi-d{grid-column:span 3;grid-row:span 2;}
.gi-e{grid-column:span 3;grid-row:span 1;}

/* Lightbox */
.lightbox{
  position:fixed;inset:0;background:rgba(6,9,14,.94);
  display:none;align-items:center;justify-content:center;
  z-index:999;padding:40px;
}
.lightbox.open{display:flex;}
.lightbox-inner{max-width:920px;max-height:86vh;width:100%;}
.lightbox-inner img,.lightbox-inner video{width:100%;max-height:86vh;object-fit:contain;border-radius:2px;}
.lightbox-close{
  position:absolute;top:24px;right:28px;background:none;border:1px solid rgba(255,255,255,.4);
  color:#fff;width:44px;height:44px;border-radius:50%;font-size:22px;cursor:pointer;
}
.lightbox-close:hover{background:var(--safety);border-color:var(--safety);}

/* ============================================
   WHY US
   ============================================ */
.why{background:var(--paper);}
.why-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;}
.why-list{display:flex;flex-direction:column;}
.why-item{
  display:flex;gap:18px;padding:22px 0;border-top:1px solid #e2e6ea;
}
.why-list .why-item:last-child{border-bottom:1px solid #e2e6ea;}
.why-item .wi-icon{
  width:38px;height:38px;flex:none;color:var(--safety);
}
.why-item h4{font-size:16.5px;color:var(--steel);margin-bottom:6px;}
.why-item p{font-size:14px;color:var(--concrete);}
.why-media{position:relative;border-radius:2px;overflow:hidden;}
.why-media video{width:100%;height:520px;object-fit:cover;}
.why-media .badge{
  position:absolute;bottom:20px;left:20px;
  background:var(--safety);color:#fff;font-family:var(--mono);
  font-size:12.5px;letter-spacing:.06em;text-transform:uppercase;
  padding:10px 16px;border-radius:2px;
}

/* ============================================
   CONTACT / CTA
   ============================================ */
.contact{
  background:var(--steel);
  color:#fff;
  position:relative;
  overflow:hidden;
}
.contact::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(115deg, transparent 49%, rgba(255,255,255,.05) 49%, rgba(255,255,255,.05) 51%, transparent 51%),
    linear-gradient(65deg, transparent 49%, rgba(255,255,255,.05) 49%, rgba(255,255,255,.05) 51%, transparent 51%);
  background-size:80px 80px;
  pointer-events:none;
}
.contact-inner{position:relative;z-index:1;text-align:center;padding:20px 0;}
.contact h2{
  font-size:clamp(34px,6vw,64px);color:#fff;max-width:760px;margin:0 auto 20px;line-height:1.05;
}
.contact h2 span{color:var(--truss);}
.contact-sub{color:#c3d0dd;max-width:520px;margin:0 auto 44px;font-size:16px;}
.contact-actions{display:flex;gap:18px;justify-content:center;flex-wrap:wrap;margin-bottom:56px;}
.contact-grid{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:1px;background:rgba(255,255,255,.15);
  border:1px solid rgba(255,255,255,.15);
  max-width:900px;margin:0 auto;
}
.contact-card{background:var(--steel-2);padding:28px 22px;text-align:left;}
.contact-card .eyebrow{color:var(--truss);}
.contact-card a, .contact-card p{color:#fff;font-family:var(--mono);font-size:15px;}
.contact-card p.sub{color:#aebccb;font-family:var(--body);font-size:13.5px;margin-top:6px;}

/* ============================================
   FOOTER
   ============================================ */
footer{background:var(--charcoal);color:#8b98a6;padding:36px 0;}
.foot-row{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px;}
.foot-row .nav-brand{color:#fff;font-size:17px;}
.foot-links{display:flex;gap:22px;font-family:var(--mono);font-size:12px;text-transform:uppercase;letter-spacing:.06em;}
.foot-links a:hover{color:var(--truss);}
.foot-fine{font-size:12px;color:#5c6b7a;margin-top:18px;font-family:var(--mono);}

/* ============================================
   REVEAL ANIMATION
   ============================================ */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease, transform .7s ease;}
.reveal.in{opacity:1;transform:translateY(0);}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width:980px){
  .nav-links{display:none;}
  .nav-toggle{display:block;}
  .hero-stats{grid-template-columns:repeat(2,1fr);}
  .svc-grid{grid-template-columns:repeat(2,1fr);}
  .proc-row{grid-template-columns:1fr;}
  .proc-row:nth-child(even) .proc-info{order:1;padding:32px 0;}
  .proc-row:nth-child(even) .proc-media{order:2;}
  .proc-info{padding:32px 0;}
  .why-grid{grid-template-columns:1fr;}
  .why-media video{height:340px;}
  .contact-grid{grid-template-columns:1fr;}
  .gal-grid{grid-template-columns:repeat(2,1fr);grid-auto-rows:150px;}
  .gi-a,.gi-c,.gi-d{grid-column:span 2;grid-row:span 2;}
  .gi-b,.gi-e{grid-column:span 2;grid-row:span 1;}
}
@media (max-width:600px){
  .hero-content{padding:150px 0 60px;}
  .hero-stats{grid-template-columns:repeat(2,1fr);}
  .section{padding:70px 0;}
  .svc-grid{grid-template-columns:1fr;}
  .contact-actions{flex-direction:column;align-items:stretch;}
}