/* ════════════════════════════════════════════════════════════════
   AquaTech by IRIBA — Shared base styles
   Design tokens, layout primitives, nav, footer, buttons, and the
   scroll-reveal utility used identically across every page.
   Page-specific styles live in home.css / products.css / solutions.css.
   ════════════════════════════════════════════════════════════════ */

:root{
  --navy:   #1F3B5F;
  --blue:   #3A7CA6;
  --blue-lt:#72C2E8;
  --blue-pale:#EAF4FB;
  --green:  #2E9E5B;
  --green-dk:#1E7A43;
  --charcoal:#2C2C2C;
  --ink:    #18263A;
  --ink-soft:#4A5568;
  --paper:  #F8FAFB;
  --white:  #FFFFFF;
  --line:   rgba(31,59,95,.10);
  --r:      12px;
  --r-lg:   20px;
  --sh:     0 4px 24px rgba(31,59,95,.10);
  --sh-lg:  0 16px 48px rgba(31,59,95,.18);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;font-size:16px;}
body{font-family:'Open Sans',system-ui,sans-serif;color:var(--charcoal);background:var(--white);-webkit-font-smoothing:antialiased;overflow-x:hidden;}
img{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}

/* ── LAYOUT ─────────────────────────────────── */
.container{max-width:1200px;margin:0 auto;padding:0 48px;}

/* ── EYEBROW LABEL ──────────────────────────── */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:'Montserrat',sans-serif;font-size:11px;font-weight:700;
  letter-spacing:.12em;text-transform:uppercase;color:var(--blue);
}
.eyebrow .dot{width:5px;height:5px;border-radius:50%;background:currentColor;flex-shrink:0;}

/* ── BUTTONS ────────────────────────────────── */
.btn{
  display:inline-flex;align-items:center;gap:9px;
  font-family:'Montserrat',sans-serif;font-size:14px;font-weight:700;
  padding:14px 26px;border-radius:50px;border:none;cursor:pointer;
  transition:transform .18s, box-shadow .18s, background .18s;white-space:nowrap;
}
.btn:hover{transform:translateY(-2px);box-shadow:var(--sh-lg);}
.btn-primary{background:var(--green);color:#fff;}
.btn-primary:hover{background:var(--green-dk);}
.btn-outline{background:transparent;color:var(--navy);border:2px solid var(--navy);}
.btn-outline:hover{background:var(--navy);color:#fff;}
.btn-outline-white{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.5);}
.btn-outline-white:hover{background:rgba(255,255,255,.12);border-color:#fff;}
.btn svg{width:16px;height:16px;flex-shrink:0;}

.wa-link{
  display:inline-flex;align-items:center;gap:9px;
  font-family:'Montserrat',sans-serif;font-size:14px;font-weight:700;
  color:rgba(255,255,255,.85);padding:14px 22px;
  border-radius:50px;border:2px solid rgba(255,255,255,.3);
  transition:background .18s,border-color .18s;
}
.wa-link:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.6);}
.wa-link svg{width:18px;height:18px;}

/* ── REVEAL ON SCROLL ───────────────────────── */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease;}
.reveal.in{opacity:1;transform:none;}
.reveal-left{opacity:0;transform:translateX(-32px);transition:opacity .7s ease,transform .7s ease;}
.reveal-left.in{opacity:1;transform:none;}
@media(prefers-reduced-motion:reduce){.reveal,.reveal-left{opacity:1;transform:none;transition:none;}}

/* ── NAV ────────────────────────────────────── */
.site-nav{
  position:sticky;top:0;z-index:100;
  background:rgba(248,250,251,.94);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s;
}
.site-nav.scrolled{box-shadow:0 4px 20px rgba(31,59,95,.08);}
.nav-inner{display:flex;align-items:center;height:72px;gap:0;}
.nav-logo{margin-right:auto;display:flex;align-items:center;}
.nav-logo img{height:38px;width:auto;}
.nav-links{display:flex;align-items:center;gap:32px;margin-right:32px;}
.nav-links a{
  font-family:'Montserrat',sans-serif;font-size:13.5px;font-weight:600;
  color:var(--ink);opacity:.8;
  transition:opacity .15s,color .15s;
  position:relative;
}
.nav-links a::after{
  content:'';position:absolute;bottom:-4px;left:0;width:0;height:2px;
  background:var(--blue);border-radius:2px;transition:width .2s;
}
.nav-links a:hover{opacity:1;color:var(--navy);}
.nav-links a:hover::after, .nav-links a.active::after{width:100%;}
.nav-links a.active{opacity:1;color:var(--navy);}
.nav-cta{font-size:13.5px;padding:11px 22px;}
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px;background:none;border:none;}
.hamburger span{display:block;width:24px;height:2px;background:var(--navy);border-radius:2px;transition:.2s;}

/* ── MOBILE NAV MENU ────────────────────────── */
.mobile-menu{
  display:none;
  position:fixed;inset:0;z-index:300;
  background:rgba(31,59,95,.97);backdrop-filter:blur(12px);
  flex-direction:column;padding:24px 32px;
}
.mobile-menu.open{display:flex;}
.mobile-menu-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:48px;}
.mobile-menu-logo img{height:36px;filter:brightness(0) invert(1);}
.mobile-menu-close{background:none;border:none;cursor:pointer;padding:8px;}
.mobile-menu-close svg{width:28px;height:28px;color:#fff;}
.mobile-menu nav{display:flex;flex-direction:column;gap:0;}
.mobile-menu nav a{
  font-family:'Montserrat',sans-serif;font-size:28px;font-weight:800;
  color:rgba(255,255,255,.7);padding:16px 0;border-bottom:1px solid rgba(255,255,255,.08);
  transition:color .15s;
}
.mobile-menu nav a:hover, .mobile-menu nav a.active{color:#fff;}
.mobile-menu .mobile-cta{margin-top:36px;}

/* ── FOOTER ─────────────────────────────────── */
.footer{background:var(--navy);padding:80px 0 0;}
.footer-top{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:60px;padding-bottom:64px;
  border-bottom:1px solid rgba(255,255,255,.10);
}
.footer-brand img{height:38px;width:auto;filter:brightness(0) invert(1);opacity:.85;}
.footer-tagline{
  font-family:'Montserrat',sans-serif;font-size:22px;font-weight:900;
  color:rgba(255,255,255,.15);line-height:1.2;letter-spacing:-.02em;margin-top:20px;
}
.footer-contact{margin-top:24px;display:flex;flex-direction:column;gap:10px;}
.footer-contact a{
  display:flex;align-items:center;gap:10px;
  font-size:14px;color:rgba(255,255,255,.6);transition:color .15s;
}
.footer-contact a:hover{color:#fff;}
.footer-contact svg{width:16px;height:16px;flex-shrink:0;}
.footer-col-head{
  font-family:'Montserrat',sans-serif;font-size:11px;font-weight:700;
  letter-spacing:.12em;text-transform:uppercase;color:var(--blue-lt);margin-bottom:20px;
}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:12px;}
.footer-col ul a{font-size:14px;color:rgba(255,255,255,.6);transition:color .15s;}
.footer-col ul a:hover{color:#fff;}
.footer-bottom{
  padding:24px 0;
  display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:rgba(255,255,255,.35);
}
.footer-bottom a{color:rgba(255,255,255,.35);transition:color .15s;}
.footer-bottom a:hover{color:rgba(255,255,255,.7);}

/* ── RESPONSIVE (shared) ────────────────────── */
@media(max-width:1024px){
  .container{padding:0 32px;}
  .footer-top{grid-template-columns:1fr 1fr;gap:40px;}
}
@media(max-width:768px){
  .container{padding:0 20px;}
  .nav-links,.nav-cta{display:none;}
  .hamburger{display:flex;}
  .footer-top{grid-template-columns:1fr;gap:40px;}
  .footer-bottom{flex-direction:column;gap:8px;text-align:center;}
}