:root{--ink:#151923;--muted:#6e7480;--line:#e7e9ee;--pink:#e58b9b;--soft:#fff4f5;--admin:#171d29}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Arial,sans-serif;color:var(--ink);background:#fff}a{text-decoration:none;color:inherit}button,input,select,textarea{font:inherit}
.container{width:min(1180px,calc(100% - 32px));margin:auto}.topbar{text-align:center;background:var(--ink);color:#fff;padding:8px;font-size:12px}
.header{height:72px;display:flex;align-items:center;gap:28px}.brand{font-size:26px;letter-spacing:5px;font-weight:800}.nav{display:flex;gap:20px;flex:1}.header-actions{display:flex;gap:10px}.icon-btn,.menu-btn{border:0;background:none;font-size:20px;cursor:pointer}.menu-btn{display:none}
.hero{position:relative;min-height:520px;overflow:hidden;background:#eed9d5}.hero picture,.hero picture img{position:absolute;inset:0;width:100%;height:100%}.hero img{object-fit:cover}.hero:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(255,245,246,.96),rgba(255,245,246,.42),transparent)}.hero-copy{position:relative;z-index:2;padding:95px 7%;max-width:650px}.hero h1{font-size:58px;line-height:1.02;margin:12px 0}.hero p{font-size:18px;line-height:1.6}.btn{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--ink);padding:12px 18px;border-radius:6px;cursor:pointer;background:#fff}.btn.primary{background:var(--ink);color:#fff}.btn.pink{background:var(--pink);border-color:var(--pink);color:#fff}.btn.danger{color:#b32033;border-color:#e4b9c0}.wide{width:100%}
.section{padding:56px 0}.section-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.section h2{font-size:30px}.filters{display:flex;gap:10px;flex-wrap:wrap}.filters a{padding:9px 14px;border:1px solid var(--line);border-radius:20px}.filters a.active{background:var(--ink);color:#fff}
.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.product-card{position:relative}.product-card img{width:100%;height:350px;object-fit:cover;background:#f2f3f4;border-radius:10px}.product-card h3{font-size:15px;margin:11px 0 6px}.price{font-weight:800}.old-price{text-decoration:line-through;color:#999;margin-left:8px}.badge{position:absolute;top:10px;left:10px;background:#fff;padding:5px 8px;border-radius:5px;font-size:11px}
.empty{padding:35px;background:#f7f8fa;text-align:center;border-radius:10px;color:var(--muted)}
.modal,.drawer{position:fixed;inset:0;background:rgba(10,14,20,.55);z-index:100;display:none}.modal.open,.drawer.open{display:flex}.modal{align-items:center;justify-content:center;padding:18px}.modal-card{width:min(980px,100%);max-height:94vh;overflow:auto;background:#fff;border-radius:14px;padding:24px;position:relative}.close{position:absolute;right:14px;top:8px;border:0;background:none;font-size:34px}.product-detail{display:grid;grid-template-columns:1.1fr .9fr;gap:28px}.gallery-main{height:550px;position:relative}.gallery-main img{width:100%;height:100%;object-fit:contain;background:#f6f6f7}.gallery-arrow{position:absolute;top:50%;transform:translateY(-50%);width:42px;height:42px;border:0;border-radius:50%;background:#fff;box-shadow:0 3px 14px #0002}.gallery-arrow.prev{left:10px}.gallery-arrow.next{right:10px}.thumbs{display:flex;gap:8px;overflow:auto;margin-top:8px}.thumbs img{width:68px;height:82px;object-fit:cover;border:2px solid transparent}.thumbs img.active{border-color:var(--ink)}
.drawer{justify-content:flex-end}.drawer-panel{width:min(430px,100%);height:100%;background:#fff;padding:22px;overflow:auto}.cart-row{display:grid;grid-template-columns:70px 1fr auto;gap:12px;border-bottom:1px solid var(--line);padding:12px 0}.cart-row img{width:70px;height:85px;object-fit:cover}.qty{display:flex;gap:8px;align-items:center}.qty button{width:28px;height:28px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.field{display:grid;gap:6px}.field.full{grid-column:1/-1}input,select,textarea{width:100%;padding:11px;border:1px solid #ccd1d9;border-radius:6px}.alert{padding:12px;background:#fff2d9;border:1px solid #f2d08f;border-radius:6px;margin:12px 0}
.footer{background:#171d29;color:#fff;padding:35px 0;margin-top:40px}
.center-page{min-height:100vh;display:grid;place-items:center;background:#f2f3f6}.login-card{width:min(430px,calc(100% - 30px));background:#fff;padding:28px;border-radius:12px;box-shadow:0 12px 40px #0001;text-align:center}

/* admin */
.admin-body{background:#f2f4f7}.admin-layout{display:grid;grid-template-columns:240px 1fr;min-height:100vh}.sidebar{background:var(--admin);color:#fff;padding:22px}.sidebar .brand{display:block;margin-bottom:30px}.sidebar a{display:block;padding:12px;border-radius:7px;margin:5px 0}.sidebar a:hover,.sidebar a.active{background:#293142}.admin-main{padding:26px}.admin-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}.stat,.panel{background:#fff;border-radius:10px;padding:20px;box-shadow:0 2px 10px #0000000a}.stat b{font-size:28px}.panel{margin-top:18px}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;min-width:720px}th,td{text-align:left;padding:12px;border-bottom:1px solid var(--line)}th{font-size:12px;color:var(--muted)}.admin-img{width:64px;height:70px;object-fit:cover;border-radius:6px}.actions{display:flex;gap:7px}.status{padding:5px 8px;border-radius:15px;background:#eef1f4;font-size:12px}
.image-preview{display:flex;gap:8px;flex-wrap:wrap}.image-preview img{width:92px;height:105px;object-fit:cover;border-radius:6px}.mobile-bottom{display:none}

@media(max-width:900px){
.product-grid{grid-template-columns:repeat(2,1fr)}.cards{grid-template-columns:repeat(2,1fr)}.admin-layout{display:block}.sidebar{display:flex;overflow:auto;padding:8px;position:sticky;top:0;z-index:50}.sidebar .brand{display:none}.sidebar nav{display:flex;min-width:max-content}.sidebar a{white-space:nowrap}.admin-main{padding:14px}
}
@media(max-width:600px){
body{padding-bottom:62px}.topbar{font-size:10px}.header{height:58px}.menu-btn{display:block}.nav{position:fixed;left:0;top:0;bottom:0;width:78%;background:#fff;z-index:120;display:block;padding:70px 20px;transform:translateX(-100%);transition:.25s;box-shadow:10px 0 30px #0002}.nav.open{transform:none}.nav a{display:block;padding:14px;border-bottom:1px solid var(--line)}.brand{font-size:20px;flex:1}.hero{min-height:520px;margin:0 -16px}.hero:after{background:linear-gradient(0deg,rgba(15,17,22,.78),transparent 65%)}.hero-copy{position:absolute;bottom:0;color:#fff;padding:30px 24px 55px}.hero h1{font-size:40px}.hero p{font-size:14px}.section{padding:34px 0}.section-head{align-items:flex-start}.product-grid{gap:10px}.product-card img{height:260px}.product-detail{grid-template-columns:1fr}.gallery-main{height:54vh;min-height:360px}.gallery-arrow{display:none}.modal{align-items:flex-end;padding:0}.modal-card{border-radius:18px 18px 0 0;padding:16px}.form-grid{grid-template-columns:1fr}.field.full{grid-column:auto}.cards{grid-template-columns:1fr 1fr;gap:9px}.stat{padding:14px}.stat b{font-size:21px}.admin-main{padding:10px}.panel{padding:13px}.mobile-bottom{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;bottom:0;left:0;right:0;height:62px;background:#fff;border-top:1px solid var(--line);z-index:80}.mobile-bottom a,.mobile-bottom button{border:0;background:#fff;display:grid;place-items:center;font-size:10px}.mobile-bottom span{font-size:20px}
}
.multi-upload-box{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:15px;border:1.5px dashed #c9ced7;border-radius:9px;background:#fafbfc}.multi-upload-box small{width:100%;color:var(--muted)}.upload-count{font-weight:700}.new-preview{margin-top:12px}.preview-wrap{position:relative;width:92px;height:105px}.preview-wrap img{width:100%;height:100%;object-fit:cover;border-radius:6px}.preview-remove{position:absolute;right:-5px;top:-6px;width:24px;height:24px;border:0;border-radius:50%;background:#171d29;color:#fff;font-size:18px;line-height:20px;cursor:pointer}


.footer-grid{
  display:grid;
  grid-template-columns:1.2fr 1fr auto;
  gap:30px;
  align-items:start
}
.footer-contact{line-height:1.8}
.footer-copyright{color:#b9bec8;text-align:right}
.checkbox-row{
  display:flex;
  align-items:center;
  gap:9px;
  min-height:42px
}
.checkbox-row input{width:auto}

@media(max-width:600px){
  .footer-grid{grid-template-columns:1fr}
  .footer-copyright{text-align:left}
}


.telegram-guide{
  padding:16px 18px;
  background:#eef7ff;
  border:1px solid #cfe7fb;
  border-radius:9px;
  margin-bottom:20px
}
.telegram-guide ol{padding-left:22px;line-height:1.8}
.telegram-guide code{background:#fff;padding:2px 6px;border-radius:4px}
.password-field{display:grid;grid-template-columns:1fr auto;gap:8px}
.telegram-actions{margin-top:18px;flex-wrap:wrap}
.telegram-example{
  white-space:pre-wrap;
  background:#17202d;
  color:#eef6ff;
  padding:18px;
  border-radius:9px;
  line-height:1.65;
  overflow:auto
}
.success-alert{background:#eaf9ef;border-color:#9edbb1;color:#176b35}
.error-alert{background:#fff0f1;border-color:#e8a6ad;color:#9c2030}

@media(max-width:600px){
  .password-field{grid-template-columns:1fr}
  .telegram-actions .btn{width:100%}
}


.report-filters{
  display:grid;
  grid-template-columns:repeat(4,minmax(150px,1fr));
  gap:14px;
  align-items:end
}
.report-filter-button .btn{width:100%}
.report-note{color:var(--muted);margin:14px 0 0}
.report-cards{margin-top:18px}
.status-report-grid{
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:12px
}
.status-report-card{
  border:1px solid var(--line);
  border-radius:9px;
  padding:15px;
  display:grid;
  gap:7px
}
.status-report-card b{font-size:20px}
.status-report-card span{color:var(--muted)}
.sales-chart{
  min-height:250px;
  display:flex;
  align-items:flex-end;
  gap:12px;
  overflow-x:auto;
  padding:20px 8px 8px;
  border-bottom:1px solid var(--line)
}
.sales-bar-item{
  min-width:65px;
  display:grid;
  justify-items:center;
  align-items:end;
  gap:7px
}
.sales-bar{
  width:36px;
  background:linear-gradient(180deg,var(--pink),#b96174);
  border-radius:7px 7px 0 0
}
.sales-bar-value{
  font-size:10px;
  color:var(--muted);
  writing-mode:vertical-rl;
  transform:rotate(180deg);
  max-height:85px;
  overflow:hidden
}
.sales-bar-date{font-size:11px}
.dashboard-grid{
  display:grid;
  grid-template-columns:1.3fr .7fr;
  gap:18px
}
.recent-order{
  display:flex;
  justify-content:space-between;
  gap:14px;
  padding:12px 0;
  border-bottom:1px solid var(--line)
}
.recent-order>div{display:grid;gap:5px}
.recent-order>div:last-child{text-align:right}
.recent-order small{color:var(--muted)}

@media(max-width:900px){
  .report-filters{grid-template-columns:1fr 1fr}
  .status-report-grid{grid-template-columns:repeat(2,1fr)}
  .dashboard-grid{grid-template-columns:1fr}
}
@media(max-width:600px){
  .report-filters{grid-template-columns:1fr}
  .status-report-grid{grid-template-columns:1fr}
  .sales-chart{min-height:220px}
}
@media print{
  .sidebar,.admin-top,.report-filters,.report-note,.btn{display:none!important}
  .admin-layout{display:block}
  .admin-main{padding:0}
  .panel,.stat{box-shadow:none;border:1px solid #ddd}
}


/* V6: nút mua hàng ngay trên từng thẻ sản phẩm */
.product-card{
  display:flex;
  flex-direction:column;
  min-width:0
}
.product-card-clickable{
  cursor:pointer;
  outline:none
}
.product-card-clickable:focus-visible{
  box-shadow:0 0 0 3px rgba(25,28,34,.16);
  border-radius:10px
}
.product-price-row{
  min-height:24px
}
.product-card-actions{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:8px;
  margin-top:13px
}
.product-card-actions .btn{
  min-height:42px;
  padding:9px 8px;
  font-size:13px;
  white-space:nowrap
}
.product-cart-btn{
  background:#fff;
  border:1px solid var(--ink)
}
.product-cart-btn:hover{
  background:#f4f4f4
}
.product-buy-btn{
  border:1px solid var(--ink)
}
.detail-actions{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:10px
}
.product-action-focus{
  box-shadow:0 0 0 4px rgba(204,113,134,.22)
}
.detail-actions button:disabled{
  opacity:.65;
  cursor:wait
}

@media(max-width:600px){
  .product-card h3{
    min-height:38px;
    margin-bottom:4px
  }
  .product-card-actions{
    grid-template-columns:1fr;
    gap:6px;
    margin-top:9px
  }
  .product-card-actions .btn{
    width:100%;
    min-height:39px;
    padding:8px 5px;
    font-size:12px
  }
  .detail-actions{
    grid-template-columns:1fr
  }
}


/* V7: bảng màu trong quản trị và nút chọn màu cho khách */
.admin-color-list{
  display:grid;
  gap:10px
}
.admin-color-row{
  display:grid;
  grid-template-columns:50px minmax(160px,1fr) 44px;
  gap:9px;
  align-items:center
}
.admin-color-preview{
  width:48px;
  height:44px;
  border:1px solid #bbc1ca;
  border-radius:8px;
  background:
    linear-gradient(var(--swatch),var(--swatch)),
    repeating-conic-gradient(#eee 0 25%,#fff 0 50%) 50% / 12px 12px;
  cursor:pointer;
  box-shadow:inset 0 0 0 3px #fff
}
.admin-color-preview input{
  width:100%;
  height:100%;
  opacity:0;
  cursor:pointer;
  padding:0;
  border:0
}
.color-remove-button{
  height:44px;
  padding:0;
  font-size:22px
}
.add-color-button{
  width:max-content;
  margin-top:10px
}
.customer-color-options{
  display:flex;
  flex-wrap:wrap;
  gap:10px
}
.customer-color-button{
  display:flex;
  align-items:center;
  gap:8px;
  min-height:44px;
  padding:6px 12px 6px 7px;
  border:1px solid #c8cdd4;
  border-radius:999px;
  background:#fff;
  cursor:pointer;
  font:inherit;
  transition:.18s ease
}
.customer-color-button:hover{
  border-color:#555;
  transform:translateY(-1px)
}
.customer-color-button.selected{
  border-color:#111;
  box-shadow:0 0 0 2px #111
}
.customer-color-swatch{
  display:block;
  width:29px;
  height:29px;
  border-radius:50%;
  border:1px solid rgba(0,0,0,.22);
  box-shadow:inset 0 0 0 2px rgba(255,255,255,.35)
}
.color-empty-message{
  color:var(--muted);
  font-size:13px
}

@media(max-width:600px){
  .admin-color-row{
    grid-template-columns:46px minmax(0,1fr) 42px
  }
  .customer-color-button{
    min-height:42px;
    padding-right:10px
  }
}


/* V7.1: bảo đảm vùng chọn màu luôn chiếm chỗ và dễ nhận biết */
.customer-color-options{
  min-height:44px;
  align-items:center;
  margin-top:6px;
  margin-bottom:8px
}
#selectedColorName{
  display:inline-block;
  min-width:70px
}


/* V8: banner slider tự động */
.hero-slider{
  position:relative;
  width:100%;
  height:520px;
  overflow:hidden;
  background:#eee
}
.hero-slides,.hero-slide,.hero-slide picture{
  position:absolute;
  inset:0
}
.hero-slide{
  opacity:0;
  visibility:hidden;
  transition:opacity .9s ease,visibility .9s ease
}
.hero-slide.active{
  opacity:1;
  visibility:visible;
  z-index:1
}
.hero-slide img{
  width:100%;
  height:520px;
  object-fit:cover;
  transform:scale(1.04);
  transition:transform 10s linear
}
.hero-slide.active img{
  transform:scale(1)
}
.hero-overlay{
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,rgba(255,244,244,.88),rgba(255,255,255,.15) 45%,rgba(0,0,0,.04))
}
.hero-content{
  position:absolute;
  z-index:2;
  left:max(7vw,60px);
  top:50%;
  transform:translateY(-45%);
  max-width:430px;
  opacity:0;
  transition:opacity .65s ease .2s,transform .65s ease .2s
}
.hero-slide.active .hero-content{
  opacity:1;
  transform:translateY(-50%)
}
.hero-content h1{
  font-size:clamp(44px,5vw,74px);
  line-height:.95;
  margin:12px 0 18px
}
.hero-content p{
  max-width:390px;
  margin-bottom:20px
}
.hero-arrow{
  position:absolute;
  z-index:5;
  top:50%;
  transform:translateY(-50%);
  width:46px;
  height:46px;
  border:0;
  border-radius:50%;
  background:rgba(255,255,255,.9);
  color:#111;
  font-size:31px;
  cursor:pointer;
  box-shadow:0 4px 18px rgba(0,0,0,.14)
}
.hero-prev{left:18px}
.hero-next{right:18px}
.hero-arrow:hover{
  background:#111;
  color:#fff
}
.hero-dots{
  position:absolute;
  z-index:5;
  left:50%;
  bottom:20px;
  transform:translateX(-50%);
  display:flex;
  gap:9px
}
.hero-dot{
  width:10px;
  height:10px;
  padding:0;
  border:1px solid #111;
  border-radius:999px;
  background:rgba(255,255,255,.8);
  cursor:pointer;
  transition:.2s
}
.hero-dot.active{
  width:28px;
  background:#111
}
.banner-link-cell{
  display:block;
  max-width:220px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap
}
@media(max-width:700px){
  .hero-slider,.hero-slide img{height:470px}
  .hero-content{left:24px;right:54px;max-width:none}
  .hero-content h1{font-size:46px}
  .hero-arrow{width:38px;height:38px;font-size:25px}
  .hero-prev{left:9px}
  .hero-next{right:9px}
}
@media(prefers-reduced-motion:reduce){
  .hero-slide,.hero-slide img,.hero-content{transition:none!important}
}


/* EGEMS V9 */
.catalog-filter{display:grid;grid-template-columns:1.2fr 1fr 1fr auto;gap:10px;margin:18px 0 24px;padding:14px;background:#f6f6f6;border-radius:10px}
.product-card{position:relative}
.wishlist-button{position:absolute;right:10px;top:10px;z-index:4;width:38px;height:38px;border:0;border-radius:50%;background:#fff;box-shadow:0 3px 14px #0002;font-size:24px;cursor:pointer}
.wishlist-button.active{background:#111;color:#fff}
.wishlist-highlight{outline:3px solid #111;outline-offset:5px}
.product-brand{display:block;color:var(--muted);margin-top:10px;text-transform:uppercase;letter-spacing:.08em}
.detail-meta{font-size:13px;color:var(--muted);margin-bottom:12px}
.reviews-box{grid-column:1/-1;border-top:1px solid var(--line);padding-top:22px}
.review-item{padding:13px 0;border-bottom:1px solid var(--line)}
.review-item span{margin-left:10px}
.review-item p{margin:6px 0}
.checkout-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:start}
.checkout-form,.order-summary{margin:0}
.payment-option{display:flex;gap:12px;padding:14px;border:1px solid var(--line);border-radius:9px;margin:10px 0;cursor:pointer}
.payment-option input{width:auto}
.payment-option span{display:grid;gap:4px}.payment-option small{color:var(--muted)}
.vietqr-image{display:block;max-width:260px;width:100%;margin:12px auto;border-radius:10px}
.checkout-submit{margin-top:18px}
.checkout-item{display:grid;grid-template-columns:58px 1fr auto;gap:10px;align-items:center;padding:10px 0;border-bottom:1px solid var(--line)}
.checkout-item img{width:58px;height:70px;object-fit:cover;border-radius:7px}.checkout-item div{display:grid;gap:5px}.checkout-item small{color:var(--muted)}
.coupon-form{display:grid;grid-template-columns:1fr auto;gap:8px;margin:18px 0 8px}
.summary-line{display:flex;justify-content:space-between;padding:8px 0}.summary-line.total{font-size:20px;border-top:1px solid var(--line);margin-top:8px;padding-top:14px}
.coupon-success{color:#176b35}.coupon-error{color:#a12434}
.footer-social{display:grid;gap:8px}.footer-social a{text-decoration:underline}
.v9-settings-block{grid-column:1/-1}
.admin-main .panel .form-grid .panel{box-shadow:none;border:1px solid var(--line)}
@media(max-width:800px){
 .catalog-filter{grid-template-columns:1fr 1fr}
 .checkout-grid{grid-template-columns:1fr}
}
@media(max-width:560px){
 .catalog-filter{grid-template-columns:1fr}
 .wishlist-header{display:none}
}