/* ===================================
   Liming Heavy Industry - Vietnamese
   Primary: Sky Blue (#1E90FF / #0080D0)
   Secondary: Eco Green (#2ECC71 / #27AE60)
   =================================== */

/* --- Reset & Base --- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:'Segoe UI','Helvetica Neue',Arial,sans-serif;color:#333;line-height:1.7;background:#f8fbfe;overflow-x:hidden}

a{text-decoration:none;color:#0080D0;transition:color .3s}
a:hover{color:#2ECC71}
img{max-width:100%;height:auto;display:block}

.container{max-width:1260px;margin:0 auto;padding:0 20px}

/* --- Top Bar --- */
.top-bar{background:#0080D0;color:#fff;font-size:13px;padding:8px 0}
.top-bar .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px}
.top-bar a{color:#fff}
.top-bar a:hover{color:#E8F8F5}
.top-bar .contact-info{display:flex;gap:20px;align-items:center}
.top-bar .contact-info i{margin-right:5px}

/* --- Header --- */
.site-header{background:#fff;box-shadow:0 2px 20px rgba(0,128,208,0.08);position:sticky;top:0;z-index:1000}
.site-header .container{display:flex;justify-content:space-between;align-items:center;padding:12px 20px}
.logo{font-size:24px;font-weight:700;color:#0080D0;display:flex;align-items:center;gap:8px}
.logo img{height:48px}
.logo span{font-size:18px;line-height:1.3}
.logo small{display:block;font-size:11px;color:#666;font-weight:400}

/* --- Navigation --- */
.main-nav{display:flex;list-style:none;gap:0}
.main-nav>li{position:relative}
.main-nav>li>a{display:block;padding:12px 18px;font-weight:600;color:#333;font-size:15px;transition:all .3s;white-space:nowrap}
.main-nav>li>a:hover,.main-nav>li.active>a{color:#0080D0}
.main-nav>li>a::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:0;height:3px;background:#0080D0;transition:width .3s}
.main-nav>li>a:hover::after,.main-nav>li.active>a::after{width:60%}

/* Dropdown */
.main-nav .dropdown{position:absolute;top:100%;left:0;background:#fff;min-width:220px;max-height:70vh;overflow-y:auto;box-shadow:0 10px 40px rgba(0,0,0,0.12);border-radius:0 0 8px 8px;opacity:0;visibility:hidden;transform:translateY(10px);transition:all .3s;list-style:none;z-index:100;border-top:3px solid #0080D0}
.main-nav .dropdown::-webkit-scrollbar{width:6px}
.main-nav .dropdown::-webkit-scrollbar-thumb{background:#ccc;border-radius:3px}
.main-nav li:hover>.dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.main-nav .dropdown li a{display:block;padding:10px 20px;color:#555;font-size:14px;border-bottom:1px solid #f0f4f8;transition:all .3s}
.main-nav .dropdown li a:hover{background:#f0f8ff;color:#0080D0;padding-left:25px}

.mobile-toggle{display:none;font-size:28px;cursor:pointer;color:#0080D0;background:none;border:none}

/* --- Hero / Banner --- */
.hero{background:linear-gradient(135deg,#0080D0 0%,#005A99 50%,#003D6B 100%);color:#fff;padding:80px 0 60px;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-50%;right:-20%;width:600px;height:600px;background:rgba(46,204,113,0.08);border-radius:50%}
.hero::after{content:'';position:absolute;bottom:-30%;left:-10%;width:400px;height:400px;background:rgba(46,204,113,0.06);border-radius:50%}
.hero .container{position:relative;z-index:1}
.hero h1{font-size:42px;font-weight:800;margin-bottom:20px;line-height:1.3}
.hero h1 .green{color:#2ECC71}
.hero p{font-size:18px;opacity:.95;max-width:700px;margin-bottom:30px;line-height:1.7}
.hero-btns{display:flex;gap:15px;flex-wrap:wrap}
.btn-primary{display:inline-block;padding:14px 36px;background:#2ECC71;color:#fff;font-weight:700;font-size:16px;border-radius:50px;transition:all .3s;border:none;cursor:pointer}
.btn-primary:hover{background:#27AE60;color:#fff;transform:translateY(-2px);box-shadow:0 8px 25px rgba(46,204,113,0.4)}
.btn-outline{display:inline-block;padding:14px 36px;background:transparent;color:#fff;font-weight:700;font-size:16px;border-radius:50px;border:2px solid rgba(255,255,255,0.5);transition:all .3s;cursor:pointer}
.btn-outline:hover{background:rgba(255,255,255,0.1);color:#fff;border-color:#fff}

/* --- Section Common --- */
.section{padding:70px 0}
.section-title{text-align:center;margin-bottom:50px}
.section-title h2{font-size:34px;font-weight:800;color:#1a1a2e;margin-bottom:12px}
.section-title h2 span{color:#0080D0}
.section-title p{font-size:16px;color:#666;max-width:650px;margin:0 auto;line-height:1.7}
.section-title .line{display:block;width:60px;height:4px;background:linear-gradient(90deg,#0080D0,#2ECC71);margin:15px auto 0;border-radius:2px}

/* --- Product Grid --- */
.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:25px}
.product-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 20px rgba(0,0,0,0.06);transition:all .4s;border:1px solid #eee}
.product-card:hover{transform:translateY(-8px);box-shadow:0 15px 40px rgba(0,128,208,0.15);border-color:#0080D0}
.product-card .card-img{height:200px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#f0f8ff,#E8F8F5);padding:20px}
.product-card .card-img img{max-height:160px;transition:transform .4s}
.product-card:hover .card-img img{transform:scale(1.08)}
.product-card .card-body{padding:20px}
.product-card .card-body h3{font-size:17px;font-weight:700;color:#1a1a2e;margin-bottom:10px;line-height:1.5}
.product-card .card-body h3 a{color:#1a1a2e}
.product-card .card-body h3 a:hover{color:#0080D0}
.product-card .card-body p{font-size:14px;color:#666;line-height:1.6;margin-bottom:12px}
.product-card .card-body .tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:12px}
.product-card .card-body .tag{display:inline-block;padding:3px 10px;background:#E8F8F5;color:#27AE60;font-size:12px;border-radius:20px}
.card-link{color:#0080D0;font-weight:600;font-size:14px;display:inline-flex;align-items:center;gap:5px;transition:gap .3s}
.card-link:hover{gap:10px;color:#2ECC71}

/* --- Solution Cards --- */
.solution-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:20px}
.solution-card{background:#fff;border-radius:10px;padding:25px;box-shadow:0 4px 15px rgba(0,0,0,0.05);transition:all .3s;border-left:4px solid transparent;text-align:center}
.solution-card:hover{border-left-color:#0080D0;transform:translateY(-5px);box-shadow:0 10px 30px rgba(0,128,208,0.12)}
.solution-card .icon{width:60px;height:60px;background:linear-gradient(135deg,#0080D0,#2ECC71);border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 15px;color:#fff;font-size:24px}
.solution-card h3{font-size:16px;margin-bottom:8px;color:#1a1a2e}
.solution-card h3 a{color:#1a1a2e}
.solution-card h3 a:hover{color:#0080D0}

/* --- News Grid --- */
.news-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(350px,1fr));gap:25px}
.news-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 20px rgba(0,0,0,0.06);transition:all .3s;display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-5px);box-shadow:0 12px 35px rgba(0,128,208,0.12)}
.news-card .news-img{height:200px;background:linear-gradient(135deg,#0080D0,#2ECC71);display:flex;align-items:center;justify-content:center;color:#fff;font-size:40px;position:relative;overflow:hidden}
.news-card .news-body{padding:20px;flex:1;display:flex;flex-direction:column}
.news-card .news-body .date{font-size:13px;color:#999;margin-bottom:8px}
.news-card .news-body h3{font-size:17px;font-weight:700;margin-bottom:10px;line-height:1.5}
.news-card .news-body h3 a{color:#1a1a2e}
.news-card .news-body h3 a:hover{color:#0080D0}
.news-card .news-body p{font-size:14px;color:#666;line-height:1.6;flex:1}
.news-card .news-body .read-more{color:#0080D0;font-weight:600;font-size:14px;margin-top:12px;display:inline-flex;align-items:center;gap:5px}

/* --- Feature Section --- */
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:30px;margin-top:40px}
.feature-box{text-align:center;padding:30px 20px;background:#fff;border-radius:12px;box-shadow:0 4px 20px rgba(0,0,0,0.05);transition:all .3s}
.feature-box:hover{transform:translateY(-5px);box-shadow:0 12px 35px rgba(0,128,208,0.1)}
.feature-box .icon{width:70px;height:70px;background:linear-gradient(135deg,#0080D0,#005A99);border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 20px;color:#fff;font-size:30px}
.feature-box h3{font-size:18px;margin-bottom:10px;color:#1a1a2e}
.feature-box p{font-size:14px;color:#666;line-height:1.7}

/* --- Stats Counter --- */
.stats{background:linear-gradient(135deg,#0080D0,#005A99);color:#fff;padding:60px 0;text-align:center}
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:30px}
.stat-item .num{font-size:42px;font-weight:800;margin-bottom:8px}
.stat-item .label{font-size:15px;opacity:.9}

/* --- About Section --- */
.about-flex{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.about-text h2{font-size:32px;font-weight:800;margin-bottom:20px;color:#1a1a2e}
.about-text h2 span{color:#0080D0}
.about-text p{font-size:15px;color:#555;line-height:1.8;margin-bottom:15px}
.about-text ul{list-style:none;padding:0}
.about-text ul li{padding:8px 0 8px 28px;position:relative;color:#555;font-size:15px}
.about-text ul li::before{content:'✓';position:absolute;left:0;color:#2ECC71;font-weight:700}
.about-img{position:relative}
.about-img .bg-shape{width:100%;height:350px;background:linear-gradient(135deg,#E8F8F5,#f0f8ff);border-radius:20px;display:flex;align-items:center;justify-content:center;color:#0080D0;font-size:80px}

/* --- Footer --- */
.site-footer{background:#1a1a2e;color:#ccc;padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:35px;margin-bottom:40px}
.footer-col h4{color:#fff;font-size:17px;margin-bottom:20px;position:relative;padding-bottom:12px}
.footer-col h4::after{content:'';position:absolute;bottom:0;left:0;width:40px;height:3px;background:linear-gradient(90deg,#0080D0,#2ECC71);border-radius:2px}
.footer-col p{font-size:14px;line-height:1.8;margin-bottom:8px}
.footer-col ul{list-style:none;padding:0}
.footer-col ul li{margin-bottom:8px}
.footer-col ul li a{color:#aaa;font-size:14px;transition:all .3s}
.footer-col ul li a:hover{color:#2ECC71;padding-left:5px}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.1);padding:20px 0;text-align:center;font-size:13px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
.footer-bottom a{color:#ccc}

/* --- Floating Icons --- */
.float-icons{position:fixed;right:0;top:calc(50% - 60px);z-index:9999}
.float-icon{position:absolute;right:0;display:flex;align-items:center;cursor:pointer;transition:width .3s;overflow:hidden;width:60px}
.float-icon:hover{width:200px}
.float-icon .icon-circle{min-width:60px;height:60px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:28px;flex-shrink:0}
.float-icon .icon-label{white-space:nowrap;padding:0 15px;height:60px;display:flex;align-items:center;color:#fff;font-weight:600;font-size:15px}
.float-wa{top:0}
.float-zalo{top:60px}
.float-email{top:120px}
.float-wa .icon-circle,.float-wa .icon-label{background:#25D366}
.float-zalo .icon-circle,.float-zalo .icon-label{background:#0084FF}
.float-email .icon-circle,.float-email .icon-label{background:#0080D0}

/* --- Breadcrumb --- */
.breadcrumb{padding:15px 0;font-size:14px;color:#666;background:#f0f4f8}
.breadcrumb a{color:#0080D0}
.breadcrumb span{color:#999}

/* --- Page Header --- */
.page-header{background:linear-gradient(135deg,#0080D0,#005A99);color:#fff;padding:50px 0;text-align:center}
.page-header h1{font-size:36px;font-weight:800;margin-bottom:10px}
.page-header p{font-size:16px;opacity:.9;max-width:600px;margin:0 auto}

/* --- Content Area (detail pages) --- */
.content-area{padding:50px 0}
.content-layout{display:grid;grid-template-columns:1fr 300px;gap:40px}
.content-main{background:#fff;border-radius:12px;padding:35px;box-shadow:0 4px 20px rgba(0,0,0,0.05)}
.content-main h2{font-size:28px;font-weight:800;color:#1a1a2e;margin-bottom:20px;padding-bottom:15px;border-bottom:2px solid #f0f4f8}
.content-main h3{font-size:22px;font-weight:700;color:#0080D0;margin:30px 0 15px}
.content-main h4{font-size:18px;font-weight:700;color:#1a1a2e;margin:25px 0 12px}
.content-main p{font-size:15px;color:#555;line-height:1.9;margin-bottom:18px}
.content-main ul,.content-main ol{padding-left:20px;margin-bottom:18px}
.content-main ul li,.content-main ol li{font-size:15px;color:#555;line-height:1.9;margin-bottom:6px}
.content-main table{width:100%;border-collapse:collapse;margin:20px 0}
.content-main table th{background:#0080D0;color:#fff;padding:12px;text-align:left;font-size:14px}
.content-main table td{padding:10px 12px;border-bottom:1px solid #eee;font-size:14px}
.content-main table tr:nth-child(even){background:#f8fbfe}
.content-main .highlight-box{background:linear-gradient(135deg,#f0f8ff,#E8F8F5);border-left:4px solid #0080D0;padding:20px;margin:20px 0;border-radius:0 8px 8px 0}
.content-main .highlight-box h4{color:#0080D0;margin-top:0}

/* --- Sidebar --- */
.sidebar{position:sticky;top:100px}
.sidebar-widget{background:#fff;border-radius:12px;padding:25px;margin-bottom:25px;box-shadow:0 4px 15px rgba(0,0,0,0.05);overflow:hidden}
.sidebar-widget h3{font-size:18px;font-weight:700;color:#1a1a2e;margin-bottom:15px;padding-bottom:10px;border-bottom:2px solid #f0f4f8}
.sidebar-widget ul{list-style:none;padding:0;max-height:400px;overflow-y:auto}
.sidebar-widget ul::-webkit-scrollbar{width:4px}
.sidebar-widget ul::-webkit-scrollbar-thumb{background:#ddd;border-radius:2px}
.sidebar-widget ul li{margin-bottom:10px}
.sidebar-widget ul li a{display:block;padding:8px 0;color:#555;font-size:14px;border-bottom:1px dashed #eee;transition:all .3s;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sidebar-widget ul li a:hover{color:#0080D0;padding-left:8px}

/* --- Pagination --- */
.pagination{display:flex;justify-content:center;gap:8px;margin-top:40px}
.pagination a,.pagination span{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:8px;font-size:14px;font-weight:600;transition:all .3s}
.pagination a{background:#fff;color:#333;border:1px solid #eee}
.pagination a:hover{background:#0080D0;color:#fff;border-color:#0080D0}
.pagination .current{background:#0080D0;color:#fff;border:1px solid #0080D0}

/* --- 404 Page --- */
.error-page{text-align:center;padding:100px 0}
.error-page h1{font-size:120px;font-weight:800;color:#0080D0;line-height:1;margin-bottom:10px}
.error-page h2{font-size:28px;color:#1a1a2e;margin-bottom:15px}
.error-page p{font-size:16px;color:#666;margin-bottom:30px}

/* --- CTA Section --- */
.cta{background:linear-gradient(135deg,#0080D0,#005A99);color:#fff;text-align:center;padding:60px 0;margin-top:30px}
.cta h2{font-size:30px;font-weight:800;margin-bottom:15px}
.cta p{font-size:16px;opacity:.9;max-width:600px;margin:0 auto 25px}
.cta .btn-primary{background:#fff;color:#0080D0}
.cta .btn-primary:hover{background:#2ECC71;color:#fff}

/* --- Product Tabs --- */
.prod-tabs{display:flex;justify-content:center;gap:5px;margin-bottom:35px;flex-wrap:wrap}
.prod-tab{padding:10px 22px;background:#fff;border:2px solid #eee;border-radius:50px;cursor:pointer;font-weight:600;font-size:14px;color:#555;transition:all .3s}
.prod-tab:hover,.prod-tab.active{background:#0080D0;color:#fff;border-color:#0080D0}

/* --- Product Detail Hero --- */
.product-hero{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;margin-bottom:40px}
.product-hero .prod-img{background:linear-gradient(135deg,#f0f8ff,#E8F8F5);border-radius:16px;display:flex;align-items:center;justify-content:center;min-height:350px;font-size:100px;color:#0080D0}
.product-hero .prod-info h1{font-size:34px;font-weight:800;color:#1a1a2e;margin-bottom:15px}
.product-hero .prod-info .specs{margin:20px 0}
.product-hero .prod-info .spec-item{display:flex;align-items:center;gap:10px;padding:8px 0;border-bottom:1px dashed #eee;font-size:15px}
.product-hero .prod-info .spec-item strong{color:#0080D0;min-width:120px}

/* --- Related Posts --- */
.related-section{margin-top:40px}
.related-section h3{font-size:22px;font-weight:700;color:#1a1a2e;margin-bottom:20px;padding-bottom:10px;border-bottom:2px solid #f0f4f8}
.related-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:15px}
.related-item{padding:15px;background:#f8fbfe;border-radius:8px;transition:all .3s}
.related-item:hover{background:#E8F8F5}
.related-item a{font-size:14px;font-weight:600;color:#1a1a2e;line-height:1.5}
.related-item a:hover{color:#0080D0}

/* --- Responsive --- */
@media(max-width:1024px){
  .content-layout{grid-template-columns:1fr}
  .sidebar{position:static}
  .product-hero{grid-template-columns:1fr}
  .about-flex{grid-template-columns:1fr}
}
@media(max-width:768px){
  .hero h1{font-size:28px}
  .section-title h2{font-size:26px}
  .product-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
  .news-grid{grid-template-columns:1fr}
  .main-nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;flex-direction:column;box-shadow:0 10px 30px rgba(0,0,0,0.1)}
  .main-nav.active{display:flex}
  .main-nav>li>a{padding:12px 20px}
  .main-nav .dropdown{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border-radius:0;border-top:none;display:none;padding-left:20px}
  .main-nav li.active>.dropdown{display:block}
  .mobile-toggle{display:block}
  .top-bar .contact-info{display:none}
  .content-main{padding:20px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:480px){
  .hero{padding:50px 0 40px}
  .hero h1{font-size:24px}
  .features{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr}
}

/* Print */
@media print{.float-icons,.site-header,.site-footer{display:none}}