/* ============================================================
   COPPERBELT PETROLEUM AND ENGINEERING LTD
   Design tokens
   Color: deep-navy #0A1F33, petrol-blue #14487E, cyan-flow #2AAFC4,
          gear-gold #D9A441, warning-orange #C4531F, paper #F3F1EA
   Type: display = "Fraunces" (engineered-plaque serif), body = "Inter",
         mono/data = "IBM Plex Mono" (styled after the mechanical
         LITRES flip-counters seen on the meters)
   Signature: the flip-digit litre-counter, reused as a data/stat motif
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=IBM+Plex+Mono:wght@500;600&display=swap');

:root{
  --navy:#0A1F33;
  --navy-deep:#061524;
  --petrol:#14487E;
  --petrol-light:#1E5FA3;
  --cyan:#2AAFC4;
  --gold:#D9A441;
  --gold-bright:#EFC066;
  --orange:#C4531F;
  --paper:#F3F1EA;
  --paper-dim:#E7E3D6;
  --ink:#0F1A24;
  --ink-soft:#33414D;
  --line:rgba(10,31,51,0.12);
  --line-light:rgba(243,241,234,0.16);

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

  --radius: 3px;
  --container: 1180px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;font-size:90%;}
body{
  margin:0;
  font-family:var(--body);
  color:var(--ink);
  background:var(--paper);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
h1,h2,h3,h4{font-family:var(--display);margin:0 0 .5em;line-height:1.08;font-weight:600;color:var(--navy);}
p{margin:0 0 1em;color:var(--ink-soft);}
.wrap{max-width:var(--container);margin:0 auto;padding:0 28px;}
:focus-visible{outline:3px solid var(--cyan);outline-offset:2px;}
@media (prefers-reduced-motion: reduce){*{animation:none !important;transition:none !important;}}

/* ---------- eyebrow / kicker ---------- */
.kicker{
  font-family:var(--mono);
  font-size:.72rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--petrol);
  display:flex;align-items:center;gap:10px;
  margin-bottom:14px;
  font-weight:600;
}
.kicker::before{content:"";width:22px;height:2px;background:var(--gold);display:inline-block;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:var(--navy);
  border-bottom:1px solid var(--line-light);
}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:76px;padding:0 12px;gap:8px;}
.brand{display:flex;align-items:center;gap:12px;color:var(--paper);}
.brand-mark{
  width:42px;height:42px;border-radius:50%;
  background:conic-gradient(var(--gold) 0deg 300deg, var(--gold-bright) 300deg 360deg);
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
}
.brand-mark span{
  width:30px;height:30px;border-radius:50%;background:var(--navy-deep);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--display);font-weight:700;color:var(--gold-bright);font-size:.95rem;
}
.brand-logo{width:36px;height:36px;border-radius:50%;object-fit:cover;flex-shrink:0;border:2px solid var(--gold);}
.brand-text{font-family:var(--display);font-weight:600;font-size:0.82rem;line-height:1.15;}
.brand-text small{display:block;font-family:var(--mono);font-size:.52rem;letter-spacing:.05em;color:var(--cyan);text-transform:uppercase;margin-top:2px;}

nav.main-nav{display:flex;gap:2px;}
nav.main-nav a{
  color:var(--paper-dim);font-size:.86rem;font-weight:500;padding:10px 14px;
  border-radius:var(--radius);transition:.15s;
}
nav.main-nav a:hover, nav.main-nav a.active{color:var(--navy);background:var(--gold-bright);}
.nav-toggle{display:none;background:none;border:0;color:var(--paper);font-size:1.6rem;cursor:pointer;}

.call-pill{
  display:flex;align-items:center;gap:8px;
  background:var(--petrol);color:var(--paper);
  padding:7px 9px;border-radius:30px;font-size:.7rem;font-weight:600;
  border:1px solid rgba(255,255,255,.15);
}
.call-pill strong{color:var(--gold-bright);}

@media (max-width:640px){
  nav.main-nav{
    position:absolute;top:76px;left:0;right:0;background:var(--navy);
    flex-direction:column;padding:8px 20px 20px;display:none;border-bottom:1px solid var(--line-light);
  }
  nav.main-nav.open{display:flex;}
  .nav-toggle{display:block;}
  .call-pill span.txt{display:none;}
}

/* ---------- hero ---------- */
.hero{
  background:
    linear-gradient(100deg, rgba(6,21,36,.94) 0%, rgba(6,21,36,.88) 42%, rgba(10,31,51,.55) 78%),
    url('images/storage-tank-black.jpg') center 60%/cover no-repeat;
  color:var(--paper);
  padding:56px 0 48px;
  position:relative;overflow:hidden;
}
.hero::after{
  content:"";position:absolute;right:-60px;bottom:-80px;width:340px;height:340px;
  border:2px solid rgba(217,164,65,.18);border-radius:50%;
}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;}
.hero h1{color:var(--paper);font-size:clamp(2rem,8vw,2.6rem);max-width:14ch;}
.hero h1 em{font-style:normal;color:var(--gold-bright);}
.hero p.lead{color:var(--paper-dim);font-size:1.08rem;max-width:46ch;}
.hero-actions{display:flex;gap:14px;margin-top:28px;flex-wrap:wrap;}

.btn{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--body);font-weight:600;font-size:.9rem;
  padding:13px 24px;border-radius:var(--radius);border:1px solid transparent;
  cursor:pointer;transition:.18s ease;
}
.btn-gold{background:var(--gold);color:var(--navy-deep);box-shadow:0 6px 16px rgba(217,164,65,.25);}
.btn-gold:hover{background:var(--gold-bright);transform:translateY(-1px);box-shadow:0 10px 22px rgba(217,164,65,.32);}
.btn-outline{border-color:rgba(243,241,234,.35);color:var(--paper);}
.btn-outline:hover{border-color:var(--paper);background:rgba(243,241,234,.06);}
.btn-cyan{background:var(--cyan);color:var(--navy-deep);}
.btn-cyan:hover{background:#4fc4d6;}

/* ---------- flip-counter signature element ---------- */
.counter-card{
  background:var(--navy-deep);
  border:1px solid var(--line-light);
  border-radius:6px;
  padding:26px 24px;
}
.counter-card .meter-label{
  font-family:var(--mono);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;
  color:var(--cyan);margin-bottom:12px;display:block;
}
.flip-row{display:flex;gap:5px;margin-bottom:6px;}
.flip-digit{
  background:#0D2438;
  border:1px solid rgba(42,175,196,.35);
  border-radius:3px;
  width:34px;height:44px;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:1.3rem;font-weight:600;color:var(--gold-bright);
  position:relative;
}
.flip-digit::after{content:"";position:absolute;left:0;right:0;top:50%;height:1px;background:rgba(0,0,0,.4);}
.flip-unit{font-family:var(--mono);font-size:.7rem;color:var(--paper-dim);letter-spacing:.08em;margin-top:8px;}
.counter-stack{display:flex;flex-direction:column;gap:18px;}
.counter-mini{display:flex;justify-content:space-between;align-items:baseline;border-top:1px solid var(--line-light);padding-top:14px;}
.counter-mini:first-child{border-top:0;padding-top:0;}
.counter-mini .n{font-family:var(--mono);font-weight:600;color:var(--gold-bright);font-size:1.4rem;}
.counter-mini .l{font-size:.78rem;color:var(--paper-dim);}

/* ---------- sections ---------- */
section{padding:76px 0;}
.section-head{max-width:640px;margin-bottom:44px;}
.section-head h2{font-size:clamp(1.7rem,3vw,2.3rem);letter-spacing:-.01em;}
.bg-navy{background:var(--navy);color:var(--paper);}
.bg-navy h2, .bg-navy h3{color:var(--paper);}
.bg-navy p{color:var(--paper-dim);}
.bg-dim{background:var(--paper-dim);}

/* ---------- cards / grids ---------- */
.grid{display:grid;gap:24px;}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-2{grid-template-columns:repeat(2,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}
@media (max-width:768px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr);} .hero-grid{grid-template-columns:1fr;}}
@media (max-width:640px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}}

.card{
  background:#fff;border:1px solid var(--line);border-radius:6px;overflow:hidden;
  display:flex;flex-direction:column;
  box-shadow:0 1px 2px rgba(10,31,51,.04);
  transition:transform .18s ease, box-shadow .18s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:0 14px 28px rgba(10,31,51,.10);}
.card img{height:190px;object-fit:cover;width:100%;filter:saturate(1.03);}
.card-body{padding:20px 22px 24px;}
.card-body h3{font-size:1.08rem;margin-bottom:8px;}
.card-body p{font-size:.9rem;margin-bottom:0;}
.card-tag{
  font-family:var(--mono);font-size:.65rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--petrol);background:rgba(20,72,126,.08);
  display:inline-block;padding:4px 10px;border-radius:20px;margin-bottom:10px;
}

.civil-card{
  background:rgba(243,241,234,.06);
  border:1px solid rgba(243,241,234,.18);
  border-radius:6px;
  padding:26px 22px;
}
.civil-num{
  font-family:var(--mono);font-size:1.6rem;font-weight:600;color:var(--gold-bright);
  display:block;margin-bottom:10px;
}
.civil-card h3{color:#fff;font-size:1.12rem;margin-bottom:10px;}
.civil-card p{color:var(--paper-dim);font-size:.9rem;margin-bottom:0;line-height:1.6;}

.service-row{
  display:flex;gap:18px;padding:20px 0;border-top:1px solid var(--line);
  align-items:flex-start;
}
.service-row:first-of-type{border-top:0;}
.service-row .idx{font-family:var(--mono);color:var(--gold);font-weight:600;font-size:.85rem;width:32px;flex-shrink:0;padding-top:3px;}
.service-row h4{font-size:1rem;margin-bottom:4px;color:var(--navy);}
.service-row p{font-size:.88rem;margin-bottom:0;}

/* ---------- badges / accreditation strip ---------- */
.accred-strip{display:flex;flex-wrap:wrap;gap:10px;}
.accred-chip{
  font-family:var(--mono);font-size:.72rem;letter-spacing:.03em;
  border:1px solid var(--line);border-radius:20px;padding:7px 14px;color:var(--ink-soft);
  background:#fff;
}

/* ---------- contact ---------- */
.contact-panel{
  display:grid;grid-template-columns:.9fr 1.1fr;gap:0;
  border-radius:8px;overflow:hidden;border:1px solid var(--line);
}
.contact-side{background:var(--navy);color:var(--paper);padding:44px 38px;}
.contact-side h3{color:var(--paper);}
.contact-line{display:flex;gap:12px;align-items:flex-start;margin-bottom:18px;font-size:.92rem;color:var(--paper-dim);}
.contact-line strong{display:block;color:var(--paper);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;font-family:var(--mono);margin-bottom:3px;}
.contact-form{background:#fff;padding:44px 38px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:.78rem;font-weight:600;margin-bottom:6px;color:var(--navy);}
.field input, .field select, .field textarea{
  width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:var(--radius);
  font-family:var(--body);font-size:.92rem;background:var(--paper);
}
.field textarea{min-height:100px;resize:vertical;}
.form-msg{font-size:.85rem;margin-top:10px;font-family:var(--mono);}
.form-msg.ok{color:#1b7a4d;}
.form-msg.err{color:var(--orange);}
@media (max-width:840px){.contact-panel{grid-template-columns:1fr;}}

/* ---------- footer ---------- */
footer{background:var(--navy-deep);color:var(--paper-dim);padding:52px 0 26px;}
footer .foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;margin-bottom:36px;}
footer h4{color:var(--paper);font-size:.85rem;letter-spacing:.06em;text-transform:uppercase;font-family:var(--mono);margin-bottom:14px;}
footer a{color:var(--paper-dim);font-size:.88rem;display:block;margin-bottom:9px;}
footer a:hover{color:var(--gold-bright);}
.foot-bottom{border-top:1px solid var(--line-light);padding-top:22px;font-size:.78rem;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;}
@media (max-width:760px){footer .foot-grid{grid-template-columns:1fr;}}

/* ---------- page banner (interior pages) ---------- */
.page-banner{
  background:
    linear-gradient(100deg, rgba(6,21,36,.93), rgba(10,31,51,.82)),
    url('images/promo-project-photos.jpg') center 30%/cover no-repeat;
  color:var(--paper);padding:52px 0 40px;
}
.page-banner h1{color:var(--paper);font-size:clamp(1.8rem,3.6vw,2.6rem);}
.breadcrumb{font-family:var(--mono);font-size:.72rem;color:var(--cyan);letter-spacing:.06em;margin-bottom:10px;}

/* ---------- floating WhatsApp button ---------- */
.wa-float{
  position:fixed;right:22px;bottom:22px;z-index:60;
  width:58px;height:58px;border-radius:50%;
  background:#25D366;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 24px rgba(37,211,102,.4);
  transition:transform .18s ease, box-shadow .18s ease;
}
.wa-float:hover{transform:translateY(-3px) scale(1.04);box-shadow:0 14px 30px rgba(37,211,102,.5);}
.wa-float-ring{
  position:absolute;inset:-6px;border-radius:50%;
  border:2px solid rgba(37,211,102,.5);
  animation:wa-pulse 2.4s ease-out infinite;
}
@keyframes wa-pulse{
  0%{transform:scale(.9);opacity:.9;}
  70%{transform:scale(1.35);opacity:0;}
  100%{opacity:0;}
}
@media (max-width:640px){.wa-float{right:16px;bottom:16px;width:52px;height:52px;}}
@media (prefers-reduced-motion: reduce){.wa-float-ring{animation:none;display:none;}}

/* ---------- scroll reveal ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease;}
.reveal.in{opacity:1;transform:translateY(0);}
@media (prefers-reduced-motion: reduce){.reveal{opacity:1;transform:none;}}

.divider-gold{height:2px;width:60px;background:var(--gold);margin:0 0 20px;}
.tag-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px;}
.tag-list span{font-family:var(--mono);font-size:.7rem;background:var(--paper-dim);padding:4px 10px;border-radius:20px;color:var(--ink-soft);}