:root{--primary:#163A43;--primary-light:#1F5962;--accent:#8FC4C2;--text:#24343A;--muted:#687980;--border:#E0E7E9;--surface:#F4F7F7;--white:#fff}
*{box-sizing:border-box}
body{margin:0;font-family:'Poppins',Arial,Helvetica,sans-serif;color:var(--text);line-height:1.65}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit}
.container{width:min(1180px,92%);margin-inline:auto}

.site-header{position:relative;z-index:100;background:#fff;border-bottom:1px solid var(--border)}
.navbar{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.brand{font-weight:800;letter-spacing:.6px;color:var(--primary);white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links>a,.dropdown-toggle{color:var(--text);font-size:14px}
.nav-links>a:hover,.dropdown-toggle:hover{color:var(--primary-light)}
.nav-dropdown{position:relative}
.dropdown-toggle{display:flex;align-items:center;gap:7px;border:0;background:transparent;padding:24px 0;cursor:pointer}
.dropdown-menu{display:none;position:absolute;top:100%;left:0;width:290px;background:#fff;border:1px solid var(--border);border-radius:0 0 8px 8px;box-shadow:0 12px 28px #163a4318;padding:8px 0;z-index:200}
.nav-dropdown:hover .dropdown-menu,.nav-dropdown:focus-within .dropdown-menu,.nav-dropdown.is-open .dropdown-menu{display:block}
.dropdown-menu a{display:block;padding:9px 15px;font-size:14px}
.dropdown-menu a:hover{background:var(--surface);color:var(--primary-light)}
.dropdown-divider{border-top:1px solid var(--border);margin:7px 0}
.nav-cta{padding:10px 16px;background:var(--primary);color:white!important;border-radius:5px}
.menu-toggle{display:none;background:none;border:1px solid var(--border);border-radius:5px;padding:8px 12px}

.hero{padding:90px 0;background:var(--primary);color:#fff}
.hero h1{max-width:720px;margin:12px 0 18px;font-size:clamp(34px,5vw,58px);line-height:1.13}
.hero p{max-width:620px;color:#d8e7e9;margin-bottom:28px}
.section{padding:65px 0}
.section-alt{background:var(--surface)}
.section-heading{margin-bottom:28px}
.section-heading h1,.section-heading h2{margin:4px 0;color:var(--primary);font-size:30px}
.eyebrow{color:var(--primary-light);font-size:12px;letter-spacing:2px;font-weight:700;text-transform:uppercase}
.eyebrow.light{color:#b5dddc}
.muted{color:var(--muted);font-size:14px}
.btn,.btn-outline{display:inline-block;padding:11px 18px;border:1px solid var(--primary);border-radius:5px;cursor:pointer}
.btn{color:#fff;background:var(--primary)}
.btn:hover{background:var(--primary-light)}
.btn-outline{color:var(--primary)}
.light-outline{color:white;border-color:#a6c5c9;margin-left:8px}

.category-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.category-card,.product-card{border:1px solid var(--border);border-radius:7px;background:#fff;overflow:hidden}
.category-card{padding:22px}
.category-card h3,.product-info h3{color:var(--primary)}
.category-card>span{font-weight:700;color:var(--primary-light)}
.product-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.product-image{display:grid;place-items:center;background:var(--surface);aspect-ratio:4/3;padding:20px}
.product-image img{width:100%;height:100%;object-fit:contain}
.product-info{padding:20px}
.product-info h3{margin:8px 0;font-size:19px}
.cta-panel{display:flex;align-items:center;justify-content:space-between;gap:30px;padding:35px;border:1px solid var(--border);border-radius:8px}
.cta-panel h2{color:var(--primary)}
.site-footer{background:var(--primary);color:#fff;padding-top:35px}
.footer-inner{display:flex;justify-content:space-between;gap:30px;padding-bottom:25px}
.footer-inner>div:last-child{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom{text-align:center;padding:14px;border-top:1px solid #ffffff25;font-size:13px}

.filter-form{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:28px}
.filter-form input,.filter-form select,.form-field input,.form-field textarea,.form-field select,.auth-form input{padding:12px;border:1px solid var(--border);border-radius:5px;background:#fff}
.filter-form input{flex:1;min-width:180px}
.product-detail-layout{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start;margin-top:28px}
.detail-image{border-radius:7px}
.detail-image img{max-width:100%;max-height:480px;object-fit:contain}
.spec-table{width:100%;border-collapse:collapse}
.spec-table th,.spec-table td{padding:13px;border-bottom:1px solid var(--border);text-align:left}
.spec-table th{width:35%;background:var(--surface)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-field{display:grid;gap:6px}
.form-field.full-width{grid-column:1/-1}
.enquiry-form,.auth-form{max-width:850px;margin-top:30px;padding:28px;border:1px solid var(--border);border-radius:8px;background:#fff}
.auth-form{max-width:440px;display:grid;gap:12px}
.auth-form input{width:100%}
.notice{padding:13px 16px;border-radius:5px;margin:12px 0}
.success{background:#e8f6ee;color:#205b39}
.error{background:#fff0ef;color:#8d2722}
.admin-heading{display:flex;align-items:center;justify-content:space-between;gap:20px}
.admin-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.admin-stat{display:flex;flex-direction:column;gap:8px;padding:20px;border:1px solid var(--border);border-radius:7px}
.admin-stat strong{font-size:30px;color:var(--primary)}
.admin-stat a{color:var(--primary-light);font-size:14px}
.table-wrapper{overflow-x:auto}
.admin-table{width:100%;border-collapse:collapse;margin-top:20px}
.admin-table th,.admin-table td{padding:12px;border-bottom:1px solid var(--border);text-align:left;white-space:nowrap}
.filter-links{display:flex;gap:8px;flex-wrap:wrap}
.space-top{margin-top:40px}
.detail-list{margin:24px 0}

@media(max-width:850px){
  .navbar{flex-wrap:wrap;padding:16px 0}
  .menu-toggle{display:block}
  .nav-links{display:none;flex-direction:column;align-items:stretch;width:100%;gap:0}
  .nav-links.is-open{display:flex}
  .nav-links>a,.dropdown-toggle{padding:12px 0;text-align:left}
  .nav-dropdown{width:100%}
  .dropdown-menu{position:static;width:100%;box-shadow:none;border-radius:5px}
  .product-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .category-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .hero{padding:60px 0}
  .admin-stats{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:540px){
  .product-grid,.category-grid,.form-grid{grid-template-columns:1fr}
  .form-field.full-width{grid-column:auto}
  .cta-panel,.footer-inner{align-items:flex-start;flex-direction:column}
  .cta-panel,.enquiry-form{padding:20px}
  .product-detail-layout{grid-template-columns:1fr;gap:24px}
  .admin-heading{align-items:flex-start;flex-direction:column}
  .light-outline{margin:10px 0 0}
}