/* ============================================================
   WaterHead — brand tokens
   Navy + engineered blue, matched to the existing print collateral.
   ============================================================ */
:root{
  --navy: #0b2c54;
  --navy-deep: #071c37;
  --blue: #1565c0;
  --blue-bright: #1c86e8;
  --sky: #63b8e8;
  --ink: #16233a;
  --slate: #52617a;
  --line: #dde5ee;
  --paper: #f5f8fc;
  --white: #ffffff;
  --amber: #e39c1c;
  --radius: 6px;
  --shadow: 0 6px 24px rgba(11,44,84,0.08);
  --font: -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  color:var(--ink);
  background:var(--white);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
.container{max-width:1180px;margin:0 auto;padding:0 24px;}
h1,h2,h3,h4{margin:0 0 .5em;font-weight:700;color:var(--navy);line-height:1.2;}
p{margin:0 0 1em;color:var(--slate);}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid var(--blue-bright);outline-offset:2px;}

/* ---------------- Header ---------------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:var(--white);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:12px 24px;gap:20px;}
.logo img{height:38px;width:auto;}
.main-nav{display:flex;align-items:center;gap:28px;}
.main-nav a{font-size:15px;font-weight:600;color:var(--navy);padding:6px 0;border-bottom:2px solid transparent;}
.main-nav a:hover,.main-nav a.active{border-color:var(--blue-bright);color:var(--blue);}
.btn-call{
  background:var(--blue);color:var(--white)!important;
  padding:9px 18px;border-radius:999px;font-weight:700;
  border-bottom:none!important;
}
.btn-call:hover{background:var(--navy);}
.nav-toggle{display:none;background:none;border:0;font-size:24px;color:var(--navy);cursor:pointer;}

@media (max-width:860px){
  .nav-toggle{display:block;}
  .main-nav{
    position:absolute;top:100%;left:0;right:0;
    background:var(--white);border-bottom:1px solid var(--line);
    flex-direction:column;align-items:flex-start;padding:16px 24px;gap:14px;
    display:none;
  }
  .main-nav.open{display:flex;}
  .btn-call{align-self:flex-start;}
}

/* ---------------- Scroll reveal animations ---------------- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .65s ease, transform .65s ease;}
.reveal.reveal-visible{opacity:1;transform:translateY(0);}
.stagger>*:nth-child(1){transition-delay:.03s;}
.stagger>*:nth-child(2){transition-delay:.09s;}
.stagger>*:nth-child(3){transition-delay:.15s;}
.stagger>*:nth-child(4){transition-delay:.21s;}
.stagger>*:nth-child(5){transition-delay:.27s;}
.stagger>*:nth-child(6){transition-delay:.33s;}
.stagger>*:nth-child(7){transition-delay:.39s;}
.stagger>*:nth-child(8){transition-delay:.45s;}
.stagger>*:nth-child(9){transition-delay:.51s;}
.stagger>*:nth-child(10){transition-delay:.57s;}
.stagger>*:nth-child(11){transition-delay:.63s;}
@media (prefers-reduced-motion: reduce){
  .reveal, .slide-content, .slide-bg{transition:none!important;animation:none!important;opacity:1!important;transform:none!important;}
}

/* ---------------- Product card hover polish ---------------- */
.product-card, .hisolve-card, .related-grid .product-card{transition:border-color .2s, transform .3s, box-shadow .3s;}
.product-card:hover, .hisolve-card:hover{box-shadow:0 14px 34px rgba(11,44,84,.14);}
.product-card img{transition:transform .35s ease;}
.product-card:hover img{transform:scale(1.06);}
.btn{
  display:inline-block;padding:13px 28px;border-radius:999px;
  font-weight:700;font-size:15px;cursor:pointer;border:2px solid transparent;
}
.btn-primary{background:var(--blue);color:var(--white);}
.btn-primary:hover{background:var(--navy);}
.btn-outline{border-color:var(--white);color:var(--white);}
.btn-outline:hover{background:var(--white);color:var(--navy);}
.btn-outline-navy{border-color:var(--navy);color:var(--navy);}
.btn-outline-navy:hover{background:var(--navy);color:var(--white);}

/* ---------------- Hero Slider (animated sliding track, full width + full height) ---------------- */
.hero-slider{position:relative;width:100%;overflow:hidden;background:#0b2c54;}
.slider-track{
  position:relative;width:100%;
  height:92vh;min-height:520px;max-height:840px;
  display:flex;
  transition:transform .8s cubic-bezier(.65,0,.35,1);
  will-change:transform;
}
@media (max-width:700px){.slider-track{height:56vh;min-height:380px;}}
.slide{
  position:relative;flex:0 0 100%;width:100%;height:100%;overflow:hidden;
  display:flex;align-items:center;
}
.slide-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  animation:kenburns 14s ease-in-out infinite alternate;
}
@keyframes kenburns{
  0%{transform:scale(1);}
  100%{transform:scale(1.1);}
}
.slide-inner{position:relative;z-index:2;max-width:1180px;margin:0 auto;padding:0 24px;width:100%;}
.slide-content{
  max-width:520px;
  opacity:0;transform:translateY(16px);transition:opacity .6s ease .15s, transform .6s ease .15s;
}
.slide.is-active .slide-content{opacity:1;transform:translateY(0);}
.slide-content-cta-only{max-width:none;display:flex;justify-content:flex-start;padding-top:0;}
.slide-eyebrow{
  display:inline-block;font-size:13px;font-weight:700;color:var(--blue);
  background:rgba(21,101,192,.1);padding:5px 14px;border-radius:999px;margin-bottom:14px;
}
.slide-content h1{
  color:var(--navy);font-size:clamp(24px,3.4vw,40px);max-width:13ch;margin-bottom:14px;
}
.slide-content p{color:var(--slate);font-size:16px;max-width:42ch;margin-bottom:20px;}
@media (max-width:760px){
  .slide-content h1{font-size:22px;}
  .slide-content p{font-size:14px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
  .slide-content{max-width:70%;}
}
@media (max-width:520px){.slide-content{max-width:88%;}}

.slider-arrow{
  position:absolute;top:50%;transform:translateY(-50%);z-index:5;
  width:40px;height:40px;border-radius:50%;border:0;background:rgba(11,44,84,.55);
  color:#fff;font-size:15px;cursor:pointer;display:flex;align-items:center;justify-content:center;
}
.slider-arrow:hover{background:rgba(11,44,84,.8);}
.slider-arrow.prev{left:16px;}
.slider-arrow.next{right:16px;}
.slider-dots{position:absolute;bottom:16px;left:0;right:0;display:flex;justify-content:center;gap:8px;z-index:5;}
.slider-dots .dot{width:9px;height:9px;border-radius:50%;border:0;background:rgba(11,44,84,.3);cursor:pointer;padding:0;}
.slider-dots .dot.is-active{background:var(--blue);width:22px;border-radius:5px;transition:width .2s;}

/* ---------------- Hero (legacy, kept for admin previews) ---------------- */
.hero{
  background:linear-gradient(120deg,var(--navy-deep) 0%,var(--navy) 55%,var(--blue) 130%);
  color:var(--white);position:relative;overflow:hidden;
}
.hero-inner{
  display:grid;grid-template-columns:1.1fr .9fr;gap:40px;
  align-items:center;padding:64px 24px;max-width:1180px;margin:0 auto;
}
.hero .eyebrow-badges{display:flex;gap:22px;flex-wrap:wrap;margin:22px 0 8px;}
.hero .eyebrow-badges span{font-size:13px;font-weight:600;color:var(--sky);}
.hero h1{color:var(--white);font-size:clamp(30px,4vw,46px);max-width:14ch;}
.hero p.lead{color:#cfe0f2;font-size:17px;max-width:46ch;}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:22px;}
.hero-img img{border-radius:var(--radius);}
@media (max-width:900px){
  .hero-inner{grid-template-columns:1fr;padding:44px 20px;}
}

/* ---------------- Section framing ---------------- */
section{padding:64px 0;}
.section-head{max-width:640px;margin:0 auto 40px;text-align:center;}
.section-head h2{font-size:clamp(24px,3vw,32px);}
.section-head p{font-size:16px;}
.bg-paper{background:var(--paper);}
.bg-navy{background:var(--navy);color:var(--white);}
.bg-navy h2,.bg-navy h3,.bg-navy h4{color:var(--white);}
.bg-navy p{color:#c6d6ea;}

/* ---------------- Feature strip (icons row) ---------------- */
.feature-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.feature-strip .item{text-align:center;padding:18px 12px;}
.feature-strip .icon{
  width:56px;height:56px;border-radius:50%;margin:0 auto 12px;
  background:rgba(255,255,255,.12);display:flex;align-items:center;justify-content:center;
  font-size:24px;
}
@media (max-width:760px){.feature-strip{grid-template-columns:repeat(2,1fr);}}

/* ---------------- Product grid ---------------- */
.product-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;}
@media (max-width:1000px){.product-grid{grid-template-columns:repeat(3,1fr);}}
@media (max-width:640px){.product-grid{grid-template-columns:repeat(2,1fr);}}

.product-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:0 0 18px;display:flex;flex-direction:column;height:100%;
  transition:border-color .15s, transform .15s;
  position:relative;overflow:hidden;
}
.product-card:hover{border-color:var(--blue);transform:translateY(-3px);}
.product-card .num{
  position:absolute;top:12px;left:12px;z-index:2;
  display:inline-flex;align-items:center;justify-content:center;
  width:26px;height:26px;border-radius:50%;background:var(--blue);color:var(--white);
  font-size:12px;font-weight:700;box-shadow:0 2px 8px rgba(0,0,0,.25);
}
.product-card img{width:100%;height:auto;display:block;margin:0 0 14px;}
.product-card h3{font-size:16px;margin-bottom:8px;padding:0 18px;}
.product-card p{font-size:14px;flex-grow:1;padding:0 18px;}
.product-card .more{font-size:13px;font-weight:700;color:var(--blue);margin-top:10px;padding:0 18px;}

/* ---------------- Category filter pills ---------------- */
.filter-row{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-bottom:32px;}
.filter-row a{
  padding:8px 18px;border:1px solid var(--line);border-radius:999px;font-size:14px;font-weight:600;color:var(--navy);
}
.filter-row a.active,.filter-row a:hover{background:var(--navy);color:var(--white);border-color:var(--navy);}

/* ---------------- Why choose list ---------------- */
.check-list{display:grid;grid-template-columns:1fr 1fr;gap:18px 32px;}
.check-list li{display:flex;gap:14px;align-items:flex-start;}
.check-list .tick{
  flex:none;width:30px;height:30px;border-radius:50%;background:var(--blue);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;
}
.check-list strong{display:block;color:var(--navy);font-size:15px;}
.check-list span{font-size:14px;color:var(--slate);}
@media (max-width:700px){.check-list{grid-template-columns:1fr;}}

/* ---------------- Problem grid ---------------- */
.problem-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.problem-grid.problem-grid-4{grid-template-columns:repeat(4,1fr);}
.problem-grid .item{text-align:center;}
.problem-grid .circle{
  width:88px;height:88px;border-radius:50%;margin:0 auto 12px;background:var(--paper);
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:30px;
  overflow:hidden;
}
.problem-grid .circle img{width:100%;height:100%;object-fit:cover;border-radius:50%;}
.problem-grid h4{font-size:15px;margin-bottom:4px;}
.problem-grid p{font-size:13px;}
@media (max-width:700px){.problem-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:760px){.problem-grid.problem-grid-4{grid-template-columns:repeat(2,1fr);}}
@media (max-width:460px){.problem-grid.problem-grid-4{grid-template-columns:1fr;}}

/* ---------------- Process steps ---------------- */
.process-row{display:flex;gap:0;counter-reset:step;flex-wrap:wrap;}
.process-row .step{flex:1;min-width:150px;position:relative;padding:0 14px;text-align:center;}
.process-row .step:not(:last-child):after{
  content:"";position:absolute;top:26px;right:-14px;width:28px;height:2px;background:var(--line);
}
.process-row .step .n{
  width:52px;height:52px;border-radius:50%;background:var(--navy);color:#fff;font-weight:700;
  display:flex;align-items:center;justify-content:center;margin:0 auto 12px;font-size:18px;
}
.process-row .step h4{font-size:14px;margin-bottom:4px;}
.process-row .step p{font-size:13px;}

/* ---------------- HiSolve compare table ---------------- */
.hisolve-block{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:36px;}
.hisolve-card{text-align:center;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:22px 16px;}
.hisolve-card .tag{
  display:inline-block;background:var(--navy);color:#fff;font-size:12px;font-weight:700;
  padding:4px 14px;border-radius:999px;margin-bottom:14px;
}
.hisolve-card img{height:190px;object-fit:contain;margin:0 auto 14px;}
.hisolve-card .flow{font-weight:700;color:var(--blue);}
@media (max-width:800px){.hisolve-block{grid-template-columns:1fr;}}

table.specs{width:100%;border-collapse:collapse;background:#fff;}
table.specs th,table.specs td{
  border:1px solid var(--line);padding:12px 14px;text-align:left;font-size:14px;
}
table.specs th{background:var(--navy);color:#fff;font-weight:700;}
table.specs td:first-child{font-weight:600;color:var(--navy);background:var(--paper);}
.table-scroll{overflow-x:auto;}

/* ---------------- Suitable-for (single full-bleed image) ---------------- */
.suitable-section{padding:0;}
.suitable-full img{width:100%;height:auto;display:block;}

/* ---------------- Why choose (image + list) ---------------- */
.why-choose-block{display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center;}
.why-choose-img img{border-radius:var(--radius);box-shadow:var(--shadow);}
.check-list-single{grid-template-columns:1fr;}
@media (max-width:860px){
  .why-choose-block{grid-template-columns:1fr;}
  .why-choose-img{order:-1;}
}

/* ---------------- CTA banner ---------------- */
.cta-banner{
  background:linear-gradient(120deg,var(--navy) 0%, var(--blue) 100%);
  color:#fff;border-radius:var(--radius);padding:44px;display:flex;
  align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
}
.cta-banner h3{color:#fff;margin-bottom:6px;}
.cta-banner p{color:#dbe8f7;margin:0;}

/* ---------------- Product detail ---------------- */
.breadcrumb{font-size:13px;color:var(--slate);margin-bottom:20px;}
.breadcrumb a{color:var(--blue);}
.product-detail{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:start;}
.product-detail .media{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  position:sticky;top:90px;padding:30px;
  display:flex;align-items:center;justify-content:center;min-height:340px;
}
.product-detail .media img{max-width:100%;max-height:520px;width:auto;height:auto;object-fit:contain;margin:0 auto;display:block;}
@media (max-width:860px){
  .product-detail .media{min-height:240px;}
  .product-detail .media img{max-height:380px;}
}
.product-detail .cat-badge{
  display:inline-block;background:var(--blue);color:#fff;font-size:12px;font-weight:700;
  padding:4px 12px;border-radius:999px;margin-bottom:12px;
}
.product-detail h1{font-size:clamp(24px,3vw,32px);}
.feature-list li{
  display:flex;gap:10px;align-items:flex-start;margin-bottom:10px;font-size:15px;color:var(--ink);
}
.feature-list li:before{content:"✓";color:var(--blue);font-weight:700;flex:none;}
.detail-cta{display:flex;gap:12px;margin-top:26px;flex-wrap:wrap;}
.tag-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px;}
.tag-row span{background:var(--paper);border:1px solid var(--line);color:var(--slate);font-size:12px;padding:5px 12px;border-radius:999px;}
@media (max-width:860px){
  .product-detail{grid-template-columns:1fr;}
  .product-detail .media{position:static;}
}

/* ---------------- Related products ---------------- */
.related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
@media (max-width:900px){.related-grid{grid-template-columns:repeat(2,1fr);}}

/* ---------------- About page ---------------- */
.about-hero{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;}
.stat-row{display:flex;gap:36px;margin-top:24px;flex-wrap:wrap;}
.stat-row .stat b{display:block;font-size:28px;color:var(--navy);}
.stat-row .stat span{font-size:13px;color:var(--slate);}
@media (max-width:800px){.about-hero{grid-template-columns:1fr;}}

/* ---------------- Contact page ---------------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;}
.contact-info .row{display:flex;gap:14px;margin-bottom:20px;align-items:flex-start;}
.contact-info .row .ic{
  width:42px;height:42px;border-radius:50%;background:var(--paper);border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;flex:none;
}
.form-group{margin-bottom:16px;}
.form-group label{display:block;font-size:14px;font-weight:600;color:var(--navy);margin-bottom:6px;}
.form-group input,.form-group select,.form-group textarea{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:var(--radius);
  font-family:var(--font);font-size:14px;background:#fff;
}
.form-group textarea{min-height:120px;resize:vertical;}
.alert{padding:14px 18px;border-radius:var(--radius);margin-bottom:20px;font-size:14px;}
.alert-success{background:#e6f6ec;color:#1a7a3d;border:1px solid #b7e4c7;}
.alert-error{background:#fdeceb;color:#b3261e;border:1px solid #f6c6c2;}
@media (max-width:800px){.contact-grid{grid-template-columns:1fr;}}

/* ---------------- Footer ---------------- */
.site-footer{background:var(--navy-deep);color:#c6d6ea;padding-top:50px;}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1.2fr 1.3fr;gap:32px;padding-bottom:36px;}
.footer-logo{
  height:62px;display:inline-block;margin-bottom:12px;
  background:#fff;padding:12px 18px;border-radius:8px;
}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:14px;}
.footer-col a{display:block;font-size:14px;color:#aebfd6;margin-bottom:10px;}
.footer-col a:hover{color:#fff;}
.footer-col p{font-size:14px;color:#aebfd6;}
.footer-legal{font-size:13px;color:#7f93b0;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:16px 0;}
.footer-bottom-inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;font-size:13px;}
.admin-login-link{color:#7f93b0;font-size:13px;}
.admin-login-link:hover{color:#fff;text-decoration:underline;}
@media (max-width:800px){.footer-grid{grid-template-columns:1fr 1fr;}}

/* ---------------- WhatsApp float ---------------- */
.whatsapp-float{
  position:fixed;right:22px;bottom:22px;width:56px;height:56px;border-radius:50%;
  background:#25D366;display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 18px rgba(0,0,0,.25);z-index:200;
}

/* ---------------- Admin ---------------- */
.admin-body{background:var(--paper);min-height:100vh;font-family:var(--font);}
.admin-shell{display:flex;min-height:100vh;}
.admin-sidebar{width:220px;background:var(--navy-deep);color:#fff;flex:none;padding:22px 0;}
.admin-sidebar .brand{padding:0 20px 20px;font-weight:700;font-size:18px;border-bottom:1px solid rgba(255,255,255,.1);margin-bottom:14px;}
.admin-sidebar a{display:block;padding:11px 20px;color:#c6d6ea;font-size:14px;}
.admin-sidebar a:hover,.admin-sidebar a.active{background:rgba(255,255,255,.08);color:#fff;}
.admin-main{flex-grow:1;padding:30px;max-width:1100px;}
.admin-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;margin-bottom:22px;}
.admin-table{width:100%;border-collapse:collapse;}
.admin-table th,.admin-table td{border-bottom:1px solid var(--line);padding:10px 12px;text-align:left;font-size:14px;}
.admin-table th{color:var(--navy);}
.admin-table img{height:44px;object-fit:contain;}
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(120deg,var(--navy-deep),var(--navy));}
.login-box{background:#fff;padding:40px;border-radius:var(--radius);width:360px;box-shadow:0 20px 60px rgba(0,0,0,.3);}
.login-box img{height:34px;margin-bottom:20px;}
.btn-block{width:100%;text-align:center;}
.badge-pill{display:inline-block;padding:3px 10px;background:var(--paper);border-radius:999px;font-size:12px;color:var(--navy);border:1px solid var(--line);}