:root{--red:#d71920;--red-d:#a80f15;--dark:#1b1b1b;--gray:#f4f4f4;--text:#333;--border:#e5e5e5}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:Arial,Helvetica,sans-serif;color:var(--text);background:#fff;font-size:14px;line-height:1.5}
a{color:inherit;text-decoration:none}
.container{max-width:1240px;margin:0 auto;padding:0 16px}
/* Topbar */
.topbar{background:var(--dark);color:#ddd;font-size:12.5px}
.topbar .container{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:7px 16px;flex-wrap:wrap}
.topbar .branches{display:flex;gap:18px;flex-wrap:wrap}
.topbar b{color:#fff}
.social{display:flex;gap:8px}
.social a{width:26px;height:26px;border-radius:50%;background:#333;display:grid;place-items:center;font-size:11px;font-weight:bold;color:#fff}
.social a:hover{background:var(--red)}
/* Header */
header.main{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:50}
header.main .container{display:flex;align-items:center;gap:24px;padding:12px 16px}
.logo svg{display:block;height:56px;width:auto}
.search{flex:1;display:flex;border:2px solid var(--red);border-radius:4px;overflow:hidden}
.search input{flex:1;border:0;padding:10px 12px;font-size:14px;outline:none;min-width:0}
.search button{background:var(--red);color:#fff;border:0;padding:0 20px;font-weight:bold;cursor:pointer}
.hotline{display:flex;align-items:center;gap:10px;white-space:nowrap}
.hotline .ic{width:42px;height:42px;border-radius:50%;background:var(--red);color:#fff;display:grid;place-items:center;font-size:20px}
.hotline small{display:block;color:#777;font-size:12px}
.hotline strong{color:var(--red);font-size:18px}
.cart{border:1px solid var(--border);padding:8px 14px;border-radius:4px;white-space:nowrap;position:relative;cursor:pointer}
.cart:hover .cart-pop{display:block}
.cart-pop{display:none;position:absolute;right:0;top:100%;background:#fff;border:1px solid var(--border);padding:14px;width:240px;box-shadow:0 6px 20px rgba(0,0,0,.1);font-size:13px}
/* Nav */
nav.menu{background:var(--red)}
nav.menu ul{list-style:none;display:flex;flex-wrap:nowrap;align-items:stretch}
nav.menu li{position:relative}
nav.menu li a{display:block;color:#fff;padding:12px 12px;font-weight:bold;font-size:13px;text-transform:uppercase;white-space:nowrap}
nav.menu li a:hover{background:var(--red-d)}
nav.menu li.hot{margin-left:auto}
nav.menu li.hot a{background:#ffcc00;color:#000}
nav.menu .sub{display:none;position:absolute;top:100%;left:0;background:#fff;min-width:230px;flex-direction:column;box-shadow:0 8px 20px rgba(0,0,0,.15);border-top:3px solid var(--red-d);z-index:70}
nav.menu .sub a{color:var(--text);text-transform:none;font-size:14px;padding:10px 16px;border-bottom:1px solid var(--border)}
nav.menu .sub a:hover{background:var(--gray);color:var(--red)}
nav.menu li.more:hover .sub{display:flex}
@media(max-width:1100px){nav.menu li a{padding:12px 8px;font-size:12px}}
.menu-toggle{display:none}
/* Slider */
.slider{position:relative;overflow:hidden;margin:18px 0;border-radius:6px}
.slides{display:flex;transition:transform .6s ease}
.slide{min-width:100%;height:380px;background:#222;display:flex;align-items:center;padding:0 60px;color:#fff;position:relative}
.slide h2{font-size:40px;line-height:1.15;margin-bottom:12px;text-transform:uppercase}
.slide p{font-size:18px;max-width:560px;margin-bottom:20px}
.slide .btn{background:#fff;color:var(--red);padding:12px 26px;border-radius:30px;font-weight:bold;display:inline-block}
.s1{background:linear-gradient(120deg,#111 0%,#3a3a3a 55%,#d71920 100%)}
.s2{background:linear-gradient(120deg,#0d2a4a,#1f6fb2)}
.s3{background:linear-gradient(120deg,#2b0a0a,#d71920)}
.s4{background:linear-gradient(120deg,#101820,#3c5a6e)}
.dots{position:absolute;bottom:14px;left:50%;transform:translateX(-50%);display:flex;gap:8px}
.dots span{width:11px;height:11px;border-radius:50%;background:rgba(255,255,255,.5);cursor:pointer}
.dots span.on{background:#fff}
.arrow{position:absolute;top:50%;transform:translateY(-50%);background:rgba(0,0,0,.35);color:#fff;border:0;width:42px;height:42px;border-radius:50%;font-size:20px;cursor:pointer}
.arrow.l{left:12px}.arrow.r{right:12px}
/* Commit bar */
.commit{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:30px}
.commit div{border:1px solid var(--border);border-radius:6px;padding:14px;display:flex;gap:12px;align-items:center}
.commit .n{font-size:24px;font-weight:bold;color:var(--red);min-width:52px;text-align:center}
/* Intro */
.intro{background:var(--gray);padding:28px;border-radius:6px;margin-bottom:30px}
.intro h1{font-size:24px;color:var(--red);margin-bottom:10px}
/* Section */
.sec{margin-bottom:38px}
.sec-head{display:flex;justify-content:space-between;align-items:center;border-bottom:2px solid var(--red);margin-bottom:16px}
.sec-head h2{background:var(--red);color:#fff;font-size:16px;text-transform:uppercase;padding:9px 18px;border-radius:4px 4px 0 0}
.sec-head a{color:var(--red);font-weight:bold;font-size:13px}
.grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.card{border:1px solid var(--border);border-radius:6px;overflow:hidden;background:#fff;transition:.2s;display:flex;flex-direction:column}
.card:hover{box-shadow:0 8px 22px rgba(0,0,0,.12);transform:translateY(-3px);border-color:var(--red)}
.thumb{aspect-ratio:1/1;background:linear-gradient(145deg,#f7f7f7,#e9e9e9);display:grid;place-items:center;color:#aaa;font-size:13px;text-align:center;padding:10px;position:relative}
.thumb .brand{font-size:20px;font-weight:bold;color:#c8c8c8}
.tag{position:absolute;top:8px;left:8px;background:var(--red);color:#fff;font-size:11px;padding:2px 7px;border-radius:3px}
.info{padding:10px 12px 14px;display:flex;flex-direction:column;gap:6px;flex:1}
.info h3{font-size:13.5px;font-weight:normal;min-height:40px}
.price{color:var(--red);font-weight:bold;font-size:15px;margin-top:auto}
.buy{background:var(--red);color:#fff;text-align:center;padding:7px;border-radius:4px;font-weight:bold;font-size:13px}
/* Brands */
.brands{display:grid;grid-template-columns:repeat(9,1fr);gap:10px}
.brands a{border:1px solid var(--border);border-radius:6px;padding:18px 6px;text-align:center;font-weight:bold;font-size:15px}
.brands a:hover{border-color:var(--red);color:var(--red)}
.models{display:flex;flex-wrap:wrap;gap:8px}
.models a{background:var(--gray);padding:8px 14px;border-radius:20px;font-size:13px}
.models a:hover{background:var(--red);color:#fff}
/* Footer */
footer{background:var(--dark);color:#bbb;margin-top:40px}
footer .cols{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:28px;padding:40px 16px}
footer h4{color:#fff;text-transform:uppercase;margin-bottom:12px;font-size:14px;border-left:3px solid var(--red);padding-left:8px}
footer li{list-style:none;margin-bottom:7px;font-size:13px}
footer a:hover{color:#fff}
footer .copy{border-top:1px solid #333;text-align:center;padding:14px;font-size:12px}
/* Floating */
.float{position:fixed;right:16px;bottom:20px;display:flex;flex-direction:column;gap:10px;z-index:60}
.float a{width:50px;height:50px;border-radius:50%;display:grid;place-items:center;color:#fff;font-weight:bold;font-size:12px;box-shadow:0 4px 12px rgba(0,0,0,.25)}
.float .call{background:var(--red);animation:pulse 1.6s infinite}
.float .zalo{background:#0068ff}
.float .mess{background:#a334fa}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(215,25,32,.6)}70%{box-shadow:0 0 0 14px rgba(215,25,32,0)}100%{box-shadow:0 0 0 0 rgba(215,25,32,0)}}
/* Responsive */
@media(max-width:1024px){.grid{grid-template-columns:repeat(4,1fr)}.brands{grid-template-columns:repeat(5,1fr)}footer .cols{grid-template-columns:1fr 1fr}}
@media(max-width:768px){
 header.main .container{flex-wrap:wrap;gap:12px}
 .logo svg{height:42px}.hotline .ic{display:none}.hotline strong{font-size:15px}.cart{padding:6px 10px}.search{order:3;flex-basis:100%}.hotline small{display:none}
 .menu-toggle{display:block;background:var(--red);color:#fff;border:0;width:100%;padding:11px;font-weight:bold;text-align:left}
 nav.menu ul{display:none;flex-direction:column}nav.menu ul.open{display:flex}
 nav.menu li.hot{margin-left:0}nav.menu li.more:hover .sub{display:none}
 nav.menu .sub{position:static;box-shadow:none;border:0;background:var(--red-d)}nav.menu li.more.open .sub{display:flex}
 nav.menu .sub a{color:#fff;border-color:rgba(255,255,255,.1);padding-left:28px}
 .grid{grid-template-columns:repeat(2,1fr)}.brands{grid-template-columns:repeat(3,1fr)}
 .commit{grid-template-columns:1fr 1fr}.slide{height:260px;padding:0 24px}.slide h2{font-size:24px}.slide p{font-size:14px}
 .topbar .branches{font-size:11.5px}.topbar .tb-phone{display:none}footer .cols{grid-template-columns:1fr}
}

/* ===== Bổ sung cho website PHP ===== */
.cart{display:flex;align-items:center;gap:6px}
.cart-count{background:var(--red);color:#fff;border-radius:10px;font-size:11px;font-weight:bold;padding:1px 7px}
.thumb img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.price del,.pd-price del{color:#999;font-weight:normal;font-size:13px;margin-left:6px}
.alert{padding:12px 16px;border-radius:5px;margin:14px 0;font-size:14px}
.alert-success{background:#e8f7ec;color:#1d6b33;border:1px solid #bfe5c9}
.alert-error{background:#fdeaea;color:#a11;border:1px solid #f3c1c1}
.alert-info{background:#eaf2fd;color:#1c4d8c;border:1px solid #c3d8f3}
.breadcrumb{padding:14px 0;font-size:13px;color:#777}.breadcrumb a{color:var(--red)}
.sort select{padding:6px 10px;border:1px solid var(--border);border-radius:4px;margin-bottom:6px}
.cat-desc{margin-bottom:16px;color:#555}
.empty{text-align:center;padding:40px 16px;background:var(--gray);border-radius:6px;margin-bottom:20px}
.empty h2{margin-bottom:10px}.empty p{margin:8px 0}
.pagination{display:flex;gap:6px;justify-content:center;margin-top:20px}
.pagination a{border:1px solid var(--border);padding:6px 12px;border-radius:4px}
.pagination a.on,.pagination a:hover{background:var(--red);color:#fff;border-color:var(--red)}
.btn-red,.btn-dark{display:inline-block;background:var(--red);color:#fff;border:0;padding:12px 22px;border-radius:5px;font-weight:bold;cursor:pointer;font-size:14px;text-align:center}
.btn-red:hover{background:var(--red-d)}
.btn-dark{background:var(--dark)}.btn-dark:hover{background:#000}
.btn-call{display:block;margin-top:12px;border:2px solid var(--red);color:var(--red);padding:11px;text-align:center;border-radius:5px;font-weight:bold}
/* Chi tiết sản phẩm */
.product-detail{display:grid;grid-template-columns:1fr 1.2fr;gap:30px;margin-bottom:30px}
.pd-image{border:1px solid var(--border);border-radius:6px;overflow:hidden}
.pd-info h1{font-size:24px;margin-bottom:12px;line-height:1.3}
.pd-price{font-size:28px;color:var(--red);font-weight:bold;margin-bottom:14px}
.pd-short{color:#555;margin-bottom:14px}
.pd-commit{list-style:none;background:var(--gray);padding:12px 16px;border-radius:6px;margin-bottom:16px}
.pd-commit li{margin:4px 0}
.pd-buy{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.qty{display:inline-flex;border:1px solid var(--border);border-radius:5px;overflow:hidden}
.qty button{width:34px;border:0;background:var(--gray);font-size:18px;cursor:pointer}
.qty input{width:48px;text-align:center;border:0;font-size:15px;padding:8px 0;-moz-appearance:textfield}
.qty input::-webkit-inner-spin-button{display:none}
.pd-bottom{display:grid;grid-template-columns:2fr 1fr;gap:24px}
.content{line-height:1.7}.content p,.content ul{margin-bottom:12px}.content ul{padding-left:20px}.content img{max-width:100%;height:auto}
/* Form */
.booking{display:flex;flex-direction:column;gap:10px}
.booking .row2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.booking input,.booking select,.booking textarea{width:100%;padding:11px 12px;border:1px solid #ccc;border-radius:5px;font:inherit}
.booking input:focus,.booking select:focus,.booking textarea:focus{outline:none;border-color:var(--red)}
.booking-sec .booking{background:var(--gray);padding:20px;border-radius:6px}
.muted{color:#777;font-size:13px}
/* Giỏ hàng */
.table-wrap{overflow-x:auto}
.cart-table{width:100%;border-collapse:collapse;min-width:600px}
.cart-table th{background:var(--gray);text-align:left;padding:10px;font-size:13px}
.cart-table td{padding:12px 10px;border-bottom:1px solid var(--border);vertical-align:middle}
.ct-name{display:flex;align-items:center;gap:10px}
.ct-thumb{width:56px;height:56px;background:#eee;border-radius:4px;overflow:hidden;flex-shrink:0}
.ct-thumb img{width:100%;height:100%;object-fit:cover}
.link-del{background:none;border:0;color:#999;font-size:16px;cursor:pointer}.link-del:hover{color:var(--red)}
.cart-foot{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-top:18px;flex-wrap:wrap}
.cart-total{display:flex;align-items:center;gap:16px;font-size:16px}.cart-total b{color:var(--red);font-size:22px}
.checkout{display:grid;grid-template-columns:1.5fr 1fr;gap:24px}
.order-summary{background:var(--gray);padding:0 18px 18px;border-radius:6px;align-self:start}
.order-summary p{margin:8px 0}
.os-row{display:flex;justify-content:space-between;gap:10px;padding:8px 0;border-bottom:1px dashed #ccc;font-size:14px}
.os-total{border:0;font-size:17px}.os-total b{color:var(--red)}
.thanks h2{color:#1d6b33}
@media(max-width:768px){
 .product-detail,.pd-bottom,.checkout{grid-template-columns:1fr}
 .booking .row2{grid-template-columns:1fr}
 .cart b{display:none}
}
.noimg{text-align:center;color:#aaa;font-size:13px}
/* Nội dung soạn bằng trình soạn thảo */
.content h2,.content h3,.content h4{margin:18px 0 10px;line-height:1.3}
.content table{border-collapse:collapse;width:100%;margin-bottom:14px}
.content td,.content th{border:1px solid #ddd;padding:8px}
.content ol{padding-left:22px;margin-bottom:12px}
.content blockquote{border-left:4px solid var(--red);background:var(--gray);padding:10px 16px;margin:0 0 12px}
.content figure.image{display:table;margin:12px auto}.content figure.image figcaption{text-align:center;color:#777;font-size:13px}
.content iframe{max-width:100%}
.content a{color:var(--red);text-decoration:underline}