/* ===================================================================
   NC INFRA & ENGINEERING LLP — Design System
   Navy engineering palette + gold accent, serif display / sans body
=================================================================== */

:root{
  --navy:      #082B55;
  --navy-dark: #071525;
  --gold:      #C99A32;
  --gold-soft: #D9B564;
  --white:     #FFFFFF;
  --off-white: #F5F7FA;
  --cool-gray: #E7EBF0;
  --ink:       #172033;
  --ink-60:    rgba(23,32,51,.62);
  --ink-40:    rgba(23,32,51,.4);
  --line:      rgba(8,43,85,.12);
  --line-soft: rgba(8,43,85,.08);

  --font-display: 'Fraunces', 'Georgia', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  --maxw: 1280px;
  --gutter: clamp(24px, 5vw, 64px);
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *{ animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; }
}

body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
  line-height:1.6;
  overflow-x:hidden;
}

img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
button{ font-family:inherit; cursor:pointer; }
ul{ margin:0; padding:0; list-style:none; }

.wrap{ max-width:var(--maxw); margin:0 auto; padding-left:var(--gutter); padding-right:var(--gutter); }

/* ---------- Typography ---------- */
h1,h2,h3,h4{ font-family:var(--font-display); font-weight:600; line-height:1.08; margin:0; color:var(--navy); letter-spacing:-0.01em; }
.display-1{ font-size:clamp(2.6rem, 5.4vw, 4.6rem); font-weight:500; }
.display-2{ font-size:clamp(2.1rem, 3.6vw, 3.1rem); font-weight:500; }
.display-3{ font-size:clamp(1.6rem, 2.4vw, 2.1rem); font-weight:500; }
.h4{ font-size:1.15rem; font-weight:600; }
p{ margin:0 0 1em; }
.lede{ font-size:clamp(1.05rem,1.6vw,1.25rem); color:var(--ink-60); max-width:62ch; font-weight:400; }
.body-md{ font-size:1rem; color:var(--ink-60); max-width:66ch; }
.kicker{ font-family:var(--font-body); font-size:.82rem; font-weight:600; color:var(--gold); letter-spacing:.02em; display:inline-flex; align-items:center; gap:.55em; margin-bottom:1em; }
.kicker::before{ content:""; width:22px; height:1px; background:var(--gold); display:inline-block; }
.on-dark{ color:rgba(255,255,255,.82); }
.on-dark .kicker{ color:var(--gold-soft); }
.on-dark h1,.on-dark h2,.on-dark h3,.on-dark h4{ color:var(--white); }
.on-dark .lede,.on-dark .body-md{ color:rgba(255,255,255,.72); }
.on-dark .chk-list li{ color:rgba(255,255,255,.72); }
.on-dark .card{ background:rgba(255,255,255,.03); border-color:rgba(255,255,255,.14); }
.on-dark .card p{ color:rgba(255,255,255,.65); }

/* ---------- Layout helpers ---------- */
.section{ padding:clamp(56px,8vw,120px) 0; }
.section-tight{ padding:clamp(40px,5vw,72px) 0; }
.bg-navy{ background:var(--navy); }
.bg-navy-dark{ background:var(--navy-dark); }
.bg-off{ background:var(--off-white); }
.bg-white{ background:var(--white); }
.rule{ height:1px; background:var(--line); border:0; margin:0; }
.rule-gold{ height:2px; width:64px; background:var(--gold); border:0; }

.grid{ display:grid; gap:28px; }
.grid-2{ grid-template-columns:1fr 1fr; }
.grid-3{ grid-template-columns:repeat(3,1fr); }
.grid-4{ grid-template-columns:repeat(4,1fr); }
.grid-6{ grid-template-columns:repeat(6,1fr); }
@media (max-width:980px){
  .grid-2,.grid-3,.grid-4{ grid-template-columns:1fr; }
  .grid-6{ grid-template-columns:repeat(2,1fr); }
}
@media (min-width:981px) and (max-width:1180px){
  .grid-4{ grid-template-columns:repeat(2,1fr); }
}

.two-col{ display:grid; grid-template-columns:.9fr 1.1fr; gap:clamp(32px,6vw,80px); align-items:center; }
@media (max-width:980px){ .two-col{ grid-template-columns:1fr; } }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:.6em;
  padding:14px 26px; font-size:.94rem; font-weight:600; border:1px solid transparent;
  white-space:nowrap; transition:background .2s ease, color .2s ease, border-color .2s ease, transform .2s ease;
}
.btn-gold{ background:var(--gold); color:var(--navy-dark); }
.btn-gold:hover{ background:var(--gold-soft); transform:translateY(-1px); }
.btn-navy{ background:var(--navy); color:var(--white); }
.btn-navy:hover{ background:var(--navy-dark); transform:translateY(-1px); }
.btn-outline{ background:transparent; border-color:var(--line); color:var(--navy); }
.btn-outline:hover{ border-color:var(--navy); }
.on-dark .btn-outline{ border-color:rgba(255,255,255,.32); color:var(--white); }
.on-dark .btn-outline:hover{ border-color:var(--white); }
.btn-row{ display:flex; gap:14px; flex-wrap:wrap; margin-top:1.6em; }

/* ---------- Navbar ---------- */
.navbar{
  position:sticky; top:0; z-index:200; background:rgba(255,255,255,.92); backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line-soft); transition:padding .25s ease, box-shadow .25s ease;
}
.navbar.scrolled{ box-shadow:0 8px 24px rgba(7,21,37,.06); }
.navbar-inner{ display:flex; align-items:center; justify-content:space-between; padding:18px var(--gutter); max-width:var(--maxw); margin:0 auto; transition:padding .25s ease; }
.navbar.scrolled .navbar-inner{ padding-top:11px; padding-bottom:11px; }
.brand{ display:flex; align-items:center; gap:12px; }
.brand img{ height:40px; width:auto; transition:height .25s ease; }
.navbar.scrolled .brand img{ height:32px; }
.brand-text{ font-family:var(--font-display); font-weight:600; color:var(--navy); font-size:1.02rem; line-height:1.15; }
.brand-text span{ display:block; font-family:var(--font-body); font-size:.62rem; font-weight:600; letter-spacing:.14em; color:var(--gold); margin-top:2px; }

.nav-links{ display:flex; align-items:center; gap:2px; }
.nav-links > li{ position:relative; }
.nav-links > li > a, .nav-links > li > button{
  background:none; border:0; color:var(--ink); font-size:.92rem; font-weight:500; padding:10px 16px; display:inline-flex; align-items:center; gap:6px;
}
.nav-links > li > a:hover, .nav-links > li > button:hover{ color:var(--navy); }
.nav-actions{ display:flex; align-items:center; gap:10px; }
.nav-actions .btn{ padding:11px 18px; font-size:.85rem; }

.mega{
  position:absolute; top:100%; left:50%; transform:translateX(-50%) translateY(6px);
  width:640px; background:var(--white); border:1px solid var(--line); box-shadow:0 24px 48px rgba(7,21,37,.14);
  padding:26px; opacity:0; visibility:hidden; transition:opacity .18s ease, transform .18s ease; display:grid; grid-template-columns:1fr 1fr; gap:4px 20px;
}
.nav-links > li:hover .mega{ opacity:1; visibility:visible; transform:translateX(-50%) translateY(0); }
.mega a{ display:block; padding:10px 12px; font-size:.88rem; color:var(--ink); border-left:2px solid transparent; }
.mega a:hover{ border-left-color:var(--gold); background:var(--off-white); color:var(--navy); }

.hamburger{ display:none; flex-direction:column; gap:5px; background:none; border:0; padding:6px; }
.hamburger span{ width:24px; height:2px; background:var(--navy); display:block; }

@media (max-width:1100px){
  .nav-links, .nav-actions .btn-outline{ display:none; }
  .hamburger{ display:flex; }
  .nav-actions{ gap:8px; }
}

/* Mobile drawer */
.mobile-drawer{ position:fixed; inset:0; z-index:300; background:var(--navy-dark); transform:translateX(100%); transition:transform .3s ease; overflow-y:auto; }
.mobile-drawer.open{ transform:translateX(0); }
.mobile-drawer-head{ display:flex; justify-content:space-between; align-items:center; padding:20px var(--gutter); border-bottom:1px solid rgba(255,255,255,.12); }
.mobile-drawer-close{ background:none; border:0; color:#fff; font-size:1.6rem; line-height:1; }
.mobile-nav{ padding:16px var(--gutter) 40px; }
.mobile-nav li{ border-bottom:1px solid rgba(255,255,255,.08); }
.mobile-nav a{ display:block; padding:16px 4px; color:#fff; font-size:1.05rem; font-family:var(--font-display); }
.mobile-nav .sub{ padding-left:14px; }
.mobile-nav .sub a{ font-family:var(--font-body); font-size:.9rem; color:rgba(255,255,255,.7); padding:11px 4px; }
.mobile-cta{ margin-top:24px; display:flex; flex-direction:column; gap:12px; }

/* ---------- Hero ---------- */
.hero{ position:relative; background:var(--navy-dark); color:#fff; overflow:hidden; }
.hero-bg{ position:absolute; inset:0; background-size:cover; background-position:center; opacity:.34; }
.hero-scrim{ position:absolute; inset:0; background:linear-gradient(180deg, rgba(7,21,37,.55) 0%, rgba(7,21,37,.88) 78%, var(--navy-dark) 100%); }
.hero-grid{ position:absolute; inset:0; background-image:
    linear-gradient(rgba(201,154,50,.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201,154,50,.09) 1px, transparent 1px);
  background-size:64px 64px; mask-image:linear-gradient(180deg, black, transparent 85%); }
.hero-inner{ position:relative; z-index:2; padding:clamp(120px,16vw,190px) 0 clamp(64px,8vw,96px); }
.hero-tag{ display:flex; align-items:center; gap:10px; font-size:.82rem; letter-spacing:.03em; color:var(--gold-soft); margin-bottom:22px; font-weight:600; }
.hero-tag .dot{ width:6px; height:6px; background:var(--gold); border-radius:50%; }
.hero h1{ color:#fff; max-width:16ch; }
.hero .lede{ color:rgba(255,255,255,.76); margin-top:22px; }
.hero-meta{ margin-top:56px; display:flex; gap:clamp(24px,6vw,64px); flex-wrap:wrap; border-top:1px solid rgba(255,255,255,.14); padding-top:26px; }
.hero-meta div{ font-size:.82rem; color:rgba(255,255,255,.55); }
.hero-meta strong{ display:block; font-family:var(--font-display); font-size:1.05rem; color:#fff; font-weight:500; margin-bottom:4px; }

.page-hero{ position:relative; background:var(--navy-dark); color:#fff; }
.page-hero-inner{ position:relative; z-index:2; padding:clamp(150px,14vw,190px) 0 clamp(56px,7vw,80px); }
.page-hero .crumb{ font-size:.82rem; color:rgba(255,255,255,.55); margin-bottom:18px; }
.page-hero .crumb a{ color:rgba(255,255,255,.8); }
.page-hero .crumb a:hover{ color:var(--gold-soft); }
.page-hero h1{ color:#fff; max-width:22ch; }

/* ---------- Cards ---------- */
.card{ background:#fff; border:1px solid var(--line); padding:32px; position:relative; transition:border-color .2s ease, transform .2s ease, box-shadow .2s ease; }
.card:hover{ border-color:var(--navy); box-shadow:0 18px 40px rgba(8,43,85,.08); transform:translateY(-3px); }
.card-corner{ position:absolute; top:0; right:0; width:18px; height:18px; border-top:2px solid var(--gold); border-right:2px solid var(--gold); }
.card .num{ font-family:var(--font-display); font-size:.85rem; color:var(--gold); font-weight:600; margin-bottom:18px; display:block; }
.card h3{ font-size:1.18rem; margin-bottom:10px; }
.card p{ color:var(--ink-60); font-size:.94rem; margin-bottom:0; }
.card-link{ margin-top:18px; font-size:.85rem; font-weight:600; color:var(--navy); display:inline-flex; align-items:center; gap:6px; }
.card:hover .card-link{ color:var(--gold); }

.icard{ padding:30px 28px; border:1px solid var(--line-soft); background:var(--off-white); }
.icard h4{ font-size:1.05rem; margin-bottom:8px; }
.icard p{ font-size:.92rem; color:var(--ink-60); margin:0; }

.pillar{ display:flex; gap:20px; padding:28px 0; border-top:1px solid var(--line); }
.pillar:last-child{ border-bottom:1px solid var(--line); }
.pillar .num{ font-family:var(--font-display); font-size:1.4rem; color:var(--gold); min-width:52px; }
.pillar h4{ margin-bottom:6px; font-size:1.08rem; }
.pillar p{ color:var(--ink-60); font-size:.93rem; margin:0; }

/* ---------- Stat / process ---------- */
.process-row{ display:flex; flex-wrap:wrap; gap:0; padding-bottom:12px; }
.process-step{ min-width:150px; flex:1 1 150px; padding:24px 20px 12px 0; border-left:1px solid var(--line); padding-left:20px; margin-left:2px; margin-bottom:12px; }
.process-step .num{ font-family:var(--font-display); color:var(--gold); font-size:1.3rem; display:block; margin-bottom:10px; }
@media (max-width:900px){ .process-row{ flex-direction:column; } .process-step{ min-width:auto; border-left:0; border-top:1px solid var(--line); padding-left:0; padding-top:20px; } }

/* ---------- CTA band ---------- */
.cta-band{ background:var(--navy); color:#fff; padding:clamp(56px,8vw,96px) 0; position:relative; overflow:hidden; }
.cta-band::before{ content:""; position:absolute; inset:0; background-image:linear-gradient(rgba(201,154,50,.06) 1px, transparent 1px), linear-gradient(90deg, rgba(201,154,50,.06) 1px, transparent 1px); background-size:56px 56px; }
.cta-band .wrap{ position:relative; z-index:1; }
.cta-band h2{ color:#fff; max-width:16ch; }

/* ---------- Footer ---------- */
footer{ background:var(--navy-dark); color:rgba(255,255,255,.72); padding:72px 0 0; }
.footer-top{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr 1.1fr; gap:32px; padding-bottom:56px; border-bottom:1px solid rgba(255,255,255,.1); }
@media (max-width:980px){ .footer-top{ grid-template-columns:1fr 1fr; } }
@media (max-width:600px){ .footer-top{ grid-template-columns:1fr; } }
.footer-brand img{ height:38px; margin-bottom:16px; }
.footer-brand p{ font-size:.88rem; max-width:34ch; color:rgba(255,255,255,.6); }
footer h5{ color:#fff; font-family:var(--font-body); font-size:.82rem; font-weight:600; letter-spacing:.04em; margin-bottom:18px; }
footer .flinks li{ margin-bottom:11px; }
footer .flinks a{ font-size:.88rem; color:rgba(255,255,255,.62); }
footer .flinks a:hover{ color:var(--gold-soft); }
.footer-bottom{ display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px; padding:24px 0; font-size:.82rem; color:rgba(255,255,255,.45); }
.footer-bottom a{ color:rgba(255,255,255,.55); margin-left:18px; }
.footer-bottom a:hover{ color:var(--gold-soft); }

/* ---------- Floating actions ---------- */
.floaters{ position:fixed; right:22px; bottom:22px; z-index:250; display:flex; flex-direction:column; gap:12px; align-items:flex-end; }
.float-btn{ width:52px; height:52px; border-radius:50%; display:flex; align-items:center; justify-content:center; box-shadow:0 10px 24px rgba(7,21,37,.28); transition:transform .2s ease; }
.float-btn:hover{ transform:scale(1.07); }
.float-whatsapp{ background:#25D366; }
.float-call{ background:var(--gold); }

/* ---------- Forms ---------- */
.field{ margin-bottom:18px; }
.field label{ display:block; font-size:.82rem; font-weight:600; color:var(--navy); margin-bottom:7px; }
.field input, .field select, .field textarea{
  width:100%; border:1px solid var(--line); background:var(--off-white); padding:13px 14px; font-family:var(--font-body); font-size:.94rem; color:var(--ink);
}
.field input:focus, .field select:focus, .field textarea:focus{ outline:2px solid var(--gold); outline-offset:1px; border-color:var(--navy); background:#fff; }
.field-row{ display:grid; grid-template-columns:1fr 1fr; gap:18px; }
@media (max-width:640px){ .field-row{ grid-template-columns:1fr; } }
.form-status{ margin-top:16px; padding:14px 16px; font-size:.9rem; display:none; }
.form-status.ok{ display:block; background:#EFF7ED; color:#2A6E3F; border:1px solid #C9E7CB; }
.form-status.err{ display:block; background:#FCEFEE; color:#A23B34; border:1px solid #F1C7C3; }

/* ---------- Misc ---------- */
.badge{ display:inline-block; font-size:.78rem; font-weight:600; padding:6px 12px; border:1px solid var(--line); color:var(--ink-60); }
.placeholder-block{ border:1px dashed var(--line); background:var(--off-white); padding:56px 40px; text-align:center; }
.placeholder-block .kicker{ justify-content:center; }
.placeholder-block h3{ margin-bottom:10px; }
.tabs{ display:flex; gap:8px; flex-wrap:wrap; margin-bottom:36px; }
.tab-btn{ padding:10px 18px; border:1px solid var(--line); background:#fff; font-size:.86rem; font-weight:600; color:var(--ink-60); }
.tab-btn.active{ background:var(--navy); border-color:var(--navy); color:#fff; }
.gallery-grid{ column-count:3; column-gap:20px; }
.gallery-grid img{ margin-bottom:20px; width:100%; border:1px solid var(--line); }
@media (max-width:900px){ .gallery-grid{ column-count:2; } }
@media (max-width:560px){ .gallery-grid{ column-count:1; } }
.img-tag{ position:relative; }
.img-cap{ font-size:.76rem; color:var(--ink-40); margin-top:6px; }

.timeline{ display:flex; flex-direction:column; }
.tl-row{ display:grid; grid-template-columns:170px 1fr; gap:24px; padding:22px 0; border-top:1px solid var(--line); }
.tl-row:last-child{ border-bottom:1px solid var(--line); }
.tl-row .stage{ font-family:var(--font-display); color:var(--navy); font-size:1rem; }
@media (max-width:700px){ .tl-row{ grid-template-columns:1fr; gap:6px; } }

/* reveal (single orchestrated, section-header only) */
.reveal{ opacity:0; transform:translateY(16px); transition:opacity .7s ease, transform .7s ease; }
.reveal.in{ opacity:1; transform:translateY(0); }

.team-card{ text-align:left; }
.team-photo{ width:100%; aspect-ratio:1/1; background:var(--cool-gray); display:flex; align-items:center; justify-content:center; font-family:var(--font-display); font-size:2.4rem; color:var(--navy); border:1px solid var(--line); margin-bottom:18px; }
.team-role{ color:var(--gold); font-size:.84rem; font-weight:600; margin-bottom:6px; }

.chk-list li{ position:relative; padding-left:24px; margin-bottom:12px; font-size:.94rem; color:var(--ink-60); }
.chk-list li::before{ content:""; position:absolute; left:0; top:8px; width:9px; height:9px; border:2px solid var(--gold); }
.on-dark .chk-list li{ color:rgba(255,255,255,.68); }
.on-dark .pillar p{ color:rgba(255,255,255,.62); }
.on-dark .pillar{ border-top-color:rgba(255,255,255,.14); }
.on-dark .pillar:last-child{ border-bottom-color:rgba(255,255,255,.14); }
.on-dark .icard{ background:rgba(255,255,255,.05); border-color:rgba(255,255,255,.12); }
.on-dark .icard p{ color:rgba(255,255,255,.62); }
.on-dark .badge{ color:rgba(255,255,255,.6); border-color:rgba(255,255,255,.25); }
.on-dark .process-step{ border-left-color:rgba(255,255,255,.18); }
.on-dark .process-step .h4{ color:#fff; }
.on-dark .rule{ background:rgba(255,255,255,.14); }

.skip-link{ position:absolute; left:-999px; top:0; background:#fff; padding:10px 16px; z-index:999; }
.skip-link:focus{ left:12px; top:12px; }
a:focus-visible, button:focus-visible{ outline:2px solid var(--gold); outline-offset:2px; }