/* ========== Reset & Variables ========== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  --c-primary:#2E6BC6;
  --c-primary-dark:#2559A8;
  --c-accent:#F97316;
  --c-danger:#EF4444;
  --c-success:#22C55E;
  --c-star:#F59E0B;
  --c-bg:#F3F4F6;
  --c-card:#FFFFFF;
  --c-dark:#1F2937;
  --c-text:#374151;
  --c-muted:#9CA3AF;
  --c-border:#E5E7EB;
  --radius:10px;
  --shadow:0 1px 3px rgba(0,0,0,.06);
  --shadow-md:0 4px 12px rgba(0,0,0,.08);
  --max-w:480px;
  --nav-h:56px;
  --toolbar-h:56px;
}

body{
  font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  background:var(--c-bg);
  color:var(--c-text);
  font-size:15px;line-height:1.5;
  -webkit-font-smoothing:antialiased;
  max-width:var(--max-w);margin:0 auto;
  min-height:100vh;
  padding-bottom:var(--toolbar-h);
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font:inherit;cursor:pointer;border:none;outline:none}
input,select,textarea{font:inherit;outline:none}

/* ========== Header ========== */
.header{
  position:sticky;top:0;z-index:100;
  background:var(--c-card);height:var(--nav-h);
  display:flex;align-items:center;justify-content:space-between;
  padding:0 14px;border-bottom:1px solid var(--c-border);
}
.header-left{display:flex;align-items:center;gap:10px}
.header-brand{font-size:18px;font-weight:800;color:var(--c-dark);letter-spacing:-.3px}
.header-brand span{color:var(--c-primary)}
.header-icons{display:flex;align-items:center;gap:8px}
.header-icon{
  width:38px;height:38px;display:flex;align-items:center;justify-content:center;
  font-size:20px;border-radius:50%;position:relative;color:var(--c-text);
}
.header-icon:active{background:var(--c-bg)}
.badge{
  position:absolute;top:0;right:0;
  background:var(--c-accent);color:#fff;
  font-size:10px;font-weight:700;
  min-width:17px;height:17px;border-radius:9px;
  display:flex;align-items:center;justify-content:center;
  border:2px solid var(--c-card);
}

/* ========== Hero Banner ========== */
.hero{
  background:linear-gradient(135deg,#1a1a2e 0%,#16213e 40%,#0f3460 100%);
  color:#fff;padding:32px 20px 36px;text-align:center;position:relative;overflow:hidden;
}
.hero::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(circle at 80% 20%,rgba(46,107,198,.3) 0%,transparent 50%),
             radial-gradient(circle at 20% 80%,rgba(249,115,22,.15) 0%,transparent 40%);
}
.hero-content{position:relative;z-index:1}
.hero h1{font-size:28px;font-weight:800;line-height:1.2;margin-bottom:8px}
.hero p{font-size:14px;opacity:.85;margin-bottom:20px;max-width:320px;margin-left:auto;margin-right:auto}
.hero-btns{display:flex;gap:10px;justify-content:center}
.btn-white{
  padding:10px 24px;border-radius:24px;font-size:14px;font-weight:600;
  background:#fff;color:var(--c-dark);
}
.btn-outline-white{
  padding:10px 24px;border-radius:24px;font-size:14px;font-weight:600;
  border:2px solid rgba(255,255,255,.5);color:#fff;
}

/* ========== Category Cards ========== */
.section{padding:0 14px}
.section-title{
  font-size:17px;font-weight:700;color:var(--c-dark);
  margin:20px 0 12px;
}
.cat-grid{
  display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px;
}
.cat-card{
  background:var(--c-card);border-radius:var(--radius);
  padding:18px 10px;text-align:center;box-shadow:var(--shadow);
  transition:transform .15s;
}
.cat-card:active{transform:scale(.97)}
.cat-icon{font-size:32px;margin-bottom:8px}
.cat-name{font-size:12px;font-weight:600;color:var(--c-dark)}
.cat-count{font-size:11px;color:var(--c-muted);margin-top:2px}

/* ========== Product Grid ========== */
.product-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:10px;
  padding:0 14px 20px;
}
.product-card{
  background:var(--c-card);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);position:relative;
  transition:transform .15s;
}
.product-card:active{transform:scale(.98)}
.card-img-wrap{position:relative;overflow:hidden}
.card-img{
  width:100%;aspect-ratio:1;object-fit:cover;background:#f0f0f0;
}
.card-badges{position:absolute;top:8px;left:8px;display:flex;flex-direction:column;gap:4px}
.card-badge{
  font-size:10px;font-weight:700;padding:2px 8px;border-radius:10px;text-transform:uppercase;
}
.badge-hot{background:var(--c-accent);color:#fff}
.badge-low{background:var(--c-danger);color:#fff}
.card-wishlist{
  position:absolute;top:8px;right:8px;
  width:30px;height:30px;border-radius:50%;
  background:rgba(255,255,255,.9);display:flex;align-items:center;justify-content:center;
  font-size:15px;box-shadow:var(--shadow);color:var(--c-muted);
}
.card-wishlist.liked{color:var(--c-danger)}
.card-body{padding:10px 10px 12px}
.card-tags{display:flex;flex-wrap:wrap;gap:4px;margin-bottom:6px}
.card-tag{
  font-size:10px;color:var(--c-primary);background:rgba(46,107,198,.08);
  padding:1px 6px;border-radius:8px;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.card-name{
  font-size:13px;font-weight:600;line-height:1.3;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:4px;color:var(--c-dark);
}
.card-price{
  font-size:15px;font-weight:700;color:var(--c-primary);
}
.card-rating{display:flex;align-items:center;gap:3px;margin-top:3px}
.stars{color:var(--c-star);font-size:12px;letter-spacing:1px}
.rating-num{font-size:11px;color:var(--c-muted)}
.card-sold{font-size:11px;color:var(--c-muted);margin-top:2px}
.card-add-btn{
  display:block;width:100%;padding:8px;margin-top:8px;
  background:var(--c-primary);color:#fff;border-radius:6px;
  font-size:12px;font-weight:600;text-align:center;
}
.card-add-btn:active{background:var(--c-primary-dark)}

/* ========== Bottom Toolbar ========== */
.toolbar{
  position:fixed;bottom:0;left:50%;transform:translateX(-50%);
  width:100%;max-width:var(--max-w);height:var(--toolbar-h);
  background:var(--c-card);border-top:1px solid var(--c-border);
  display:flex;z-index:100;
}
.toolbar a{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  font-size:10px;color:var(--c-muted);gap:1px;
}
.toolbar a.active{color:var(--c-primary)}
.toolbar .tb-icon{font-size:20px}

/* ========== Search ========== */
.search-row{padding:10px 14px;background:var(--c-card);border-bottom:1px solid var(--c-border)}
.search-row input{
  width:100%;height:38px;padding:0 14px;border:1px solid var(--c-border);
  border-radius:19px;background:var(--c-bg);font-size:14px;
}
.search-row input:focus{border-color:var(--c-primary)}

/* ========== Model Filter Chips ========== */
.model-chips{
  display:flex;gap:6px;padding:8px 14px;background:var(--c-card);
  overflow-x:auto;-webkit-overflow-scrolling:touch;border-bottom:1px solid var(--c-border);
}
.model-chips::-webkit-scrollbar{display:none}
.chip{
  flex-shrink:0;padding:5px 12px;border-radius:16px;font-size:12px;font-weight:500;
  background:var(--c-bg);color:var(--c-muted);white-space:nowrap;
}
.chip.active{background:var(--c-primary);color:#fff}

/* ========== Product Detail ========== */
.detail-img{width:100%;aspect-ratio:1;object-fit:cover;background:#f0f0f0}
.detail-body{padding:16px 14px;background:var(--c-card)}
.detail-name{font-size:20px;font-weight:700;color:var(--c-dark);margin-bottom:8px}
.detail-price{font-size:24px;font-weight:700;color:var(--c-primary);margin-bottom:6px}
.detail-rating{display:flex;align-items:center;gap:8px;margin-bottom:4px}
.detail-rating .stars{font-size:16px}
.detail-rating span{font-size:13px;color:var(--c-muted)}
.detail-meta{display:flex;gap:6px;flex-wrap:wrap;margin:8px 0 4px}
.detail-meta .tag{
  font-size:11px;color:var(--c-text);background:var(--c-bg);
  padding:2px 8px;border-radius:12px;
}
.detail-meta .tag.soldout{background:rgba(239,68,68,.1);color:var(--c-danger)}
.detail-desc{
  font-size:14px;color:var(--c-muted);line-height:1.7;
  margin-top:16px;padding-top:16px;border-top:1px solid var(--c-border);
}
.detail-actions{
  position:sticky;bottom:var(--toolbar-h);padding:12px 14px;
  background:var(--c-card);border-top:1px solid var(--c-border);
  display:flex;gap:10px;
}
.detail-actions .qty-input{width:50px;text-align:center;border:1px solid var(--c-border);border-radius:8px;font-size:15px}
.btn-primary{
  flex:1;padding:12px;background:var(--c-primary);color:#fff;
  border-radius:8px;font-size:14px;font-weight:600;
}
.btn-primary:active{background:var(--c-primary-dark)}

/* ========== Cart ========== */
.cart-list{padding:10px 14px}
.cart-item{
  display:flex;gap:10px;background:var(--c-card);border-radius:var(--radius);
  padding:10px;margin-bottom:8px;box-shadow:var(--shadow);align-items:center;
}
.cart-item-img{width:72px;height:72px;border-radius:8px;object-fit:cover;flex-shrink:0;background:#f0f0f0}
.cart-item-info{flex:1;min-width:0}
.cart-item-name{font-size:13px;font-weight:600;color:var(--c-dark);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cart-item-price{font-size:14px;font-weight:700;color:var(--c-primary);margin-top:3px}
.cart-item-qty{display:flex;align-items:center;gap:8px;margin-top:5px}
.qty-btn{width:26px;height:26px;border-radius:50%;background:var(--c-bg);font-size:15px;font-weight:700;display:flex;align-items:center;justify-content:center}
.cart-item-qty span{font-size:13px;font-weight:600;min-width:18px;text-align:center}
.cart-item-remove{color:var(--c-danger);font-size:18px;padding:4px}
.cart-empty{text-align:center;padding:60px 20px;color:var(--c-muted)}
.cart-empty .empty-icon{font-size:64px;margin-bottom:12px}
.cart-summary{
  position:sticky;bottom:var(--toolbar-h);padding:14px;
  background:var(--c-card);border-top:1px solid var(--c-border);
  display:flex;align-items:center;justify-content:space-between;
}
.cart-total-text{font-size:12px;color:var(--c-muted)}
.cart-total-price{font-size:20px;font-weight:700;color:var(--c-primary)}

/* ========== Checkout ========== */
.checkout-body{padding:14px}
.form-section{
  background:var(--c-card);border-radius:var(--radius);padding:14px;
  margin-bottom:10px;box-shadow:var(--shadow);
}
.form-section-title{font-size:15px;font-weight:700;margin-bottom:12px;color:var(--c-dark)}
.form-group{margin-bottom:12px}
.form-group:last-child{margin-bottom:0}
.form-group label{display:block;font-size:12px;font-weight:600;color:var(--c-muted);margin-bottom:3px}
.form-group input,.form-group select{
  width:100%;height:42px;padding:0 12px;border:1px solid var(--c-border);border-radius:8px;font-size:14px;
}
.form-group input:focus{border-color:var(--c-primary)}
.form-row{display:flex;gap:8px}
.form-row .form-group{flex:1}

.order-summary{background:var(--c-card);border-radius:var(--radius);padding:14px;margin-bottom:10px;box-shadow:var(--shadow)}
.summary-item{display:flex;justify-content:space-between;align-items:center;padding:4px 0;font-size:13px}
.summary-item.total{font-size:17px;font-weight:700;border-top:1px solid var(--c-border);margin-top:6px;padding-top:10px;color:var(--c-primary)}

.btn-submit{
  width:100%;padding:14px;background:var(--c-primary);color:#fff;
  border-radius:10px;font-size:15px;font-weight:700;margin-bottom:16px;
}
.btn-submit:active{background:var(--c-primary-dark)}
.btn-submit:disabled{background:#93C5FD}

/* ========== Wishlist Page ========== */
.wishlist-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:10px;
  padding:10px 14px;
}

/* ========== Success Page ========== */
.success-page{text-align:center;padding:80px 20px}
.success-icon{font-size:72px;margin-bottom:16px}
.success-title{font-size:20px;font-weight:700;margin-bottom:6px;color:var(--c-dark)}
.success-msg{font-size:13px;color:var(--c-muted);margin-bottom:20px}

.btn-outline{
  display:inline-block;padding:10px 28px;
  border:2px solid var(--c-primary);color:var(--c-primary);
  border-radius:8px;font-size:14px;font-weight:600;
}

/* ========== Category Tabs (for pages that still need them) ========== */
.cat-tabs{
  display:flex;gap:6px;padding:8px 14px;background:var(--c-card);overflow-x:auto;
  -webkit-overflow-scrolling:touch;border-bottom:1px solid var(--c-border);
}
.cat-tabs::-webkit-scrollbar{display:none}
.cat-tab{
  flex-shrink:0;padding:5px 14px;border-radius:16px;font-size:12px;font-weight:500;
  background:var(--c-bg);color:var(--c-muted);white-space:nowrap;
}
.cat-tab.active{background:var(--c-primary);color:#fff}

/* ========== Toast ========== */
.toast{
  position:fixed;top:16px;left:50%;transform:translateX(-50%);
  background:var(--c-dark);color:#fff;padding:10px 22px;
  border-radius:20px;font-size:13px;font-weight:500;
  z-index:999;opacity:0;transition:opacity .3s;pointer-events:none;
}
.toast.show{opacity:1}

/* ========== Loading ========== */
.loading{text-align:center;padding:40px;color:var(--c-muted)}
.spinner{display:inline-block;width:30px;height:30px;border:3px solid var(--c-border);border-top-color:var(--c-primary);border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* ========== Footer ========== */
.footer{background:var(--c-dark);color:rgba(255,255,255,.7);padding:24px 14px 20px;margin-top:20px;font-size:12px}
.footer-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.footer-col h4{color:#fff;font-size:13px;font-weight:700;margin-bottom:8px}
.footer-col a{display:block;color:rgba(255,255,255,.6);margin-bottom:4px}
.footer-bottom{text-align:center;margin-top:20px;padding-top:16px;border-top:1px solid rgba(255,255,255,.1);color:rgba(255,255,255,.4);font-size:11px}

/* ========== Reviews ========== */
.review-section{padding:0 14px 20px;margin-top:12px}
.review-header{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.review-avg{font-size:36px;font-weight:800;color:var(--c-dark);line-height:1}
.review-stars .stars-row{font-size:16px;color:var(--c-star);letter-spacing:2px;margin-bottom:2px}
.review-count{font-size:12px;color:var(--c-muted)}
.review-bars{flex:1;min-width:0}
.review-bar-row{display:flex;align-items:center;gap:6px;margin-bottom:2px;font-size:11px;color:var(--c-muted)}
.review-bar-row .label{width:20px;text-align:right}
.review-bar-bg{flex:1;height:6px;background:var(--c-bg);border-radius:3px;overflow:hidden}
.review-bar-fill{height:100%;background:var(--c-star);border-radius:3px;transition:width .3s}
.review-bar-row .pct{width:28px;text-align:right}

.review-card{
  background:var(--c-card);border-radius:var(--radius);padding:14px;
  margin-bottom:10px;box-shadow:var(--shadow);
}
.review-card-top{display:flex;align-items:center;gap:10px;margin-bottom:8px}
.review-avatar{width:36px;height:36px;border-radius:50%;background:var(--c-bg);overflow:hidden;flex-shrink:0}
.review-avatar img{width:100%;height:100%;object-fit:cover}
.review-nick{font-size:13px;font-weight:600;color:var(--c-dark)}
.review-card-stars{font-size:12px;color:var(--c-star);letter-spacing:1px}
.review-card-date{font-size:11px;color:var(--c-muted);margin-left:auto}
.review-card-text{font-size:13px;color:var(--c-text);line-height:1.6;margin-bottom:8px}
.review-card-imgs{display:flex;gap:6px;flex-wrap:wrap}
.review-card-imgs img{width:72px;height:72px;border-radius:8px;object-fit:cover;background:var(--c-bg);cursor:pointer}
.review-more{text-align:center;padding:8px}
.review-more button{font-size:13px;color:var(--c-primary);font-weight:600;background:none}

/* ========== Text overflow fixes ========== */
.detail-desc,.review-card-text,.cart-item-name,.card-name{word-break:break-word;overflow-wrap:break-word}

.img-lightbox{position:fixed;inset:0;z-index:9999;background:rgba(0,0,0,.85);display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:opacity .2s}
.img-lightbox.active{opacity:1;pointer-events:auto}
.img-lightbox img{max-width:92%;max-height:85vh;border-radius:8px;object-fit:contain}
.img-lightbox .lb-close{position:absolute;top:16px;right:16px;width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,.15);color:#fff;font-size:20px;display:flex;align-items:center;justify-content:center;cursor:pointer}

/* ========== Image Carousel ========== */
.carousel{position:relative;overflow:hidden;background:#f0f0f0}
.carousel-track{display:flex;transition:transform .3s ease;touch-action:pan-y}
.carousel-track img{width:100%;flex-shrink:0;aspect-ratio:1;object-fit:cover}
.carousel-dots{display:flex;justify-content:center;gap:6px;position:absolute;bottom:12px;left:0;right:0}
.carousel-dot{width:7px;height:7px;border-radius:50%;background:rgba(255,255,255,.45);transition:all .2s}
.carousel-dot.active{background:#fff;width:18px;border-radius:4px}

/* Override carousel — CSS scroll-snap */
.carousel{position:relative;background:#f0f0f0;overflow:hidden}
.carousel-track{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;scroll-behavior:smooth}
.carousel-track::-webkit-scrollbar{display:none}
.carousel-track img{width:100%;flex-shrink:0;aspect-ratio:1;object-fit:cover;scroll-snap-align:start}

.back-top{position:fixed;bottom:80px;right:16px;z-index:99;width:40px;height:40px;border-radius:50%;background:var(--c-primary);color:#fff;font-size:18px;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 8px rgba(0,0,0,.2);opacity:0;pointer-events:none;transition:opacity .25s;cursor:pointer}
.back-top.show{opacity:1;pointer-events:auto}
.back-top:active{background:var(--c-primary-dark)}

.ptr-wrap{position:fixed;top:0;left:50%;transform:translateX(-50%);z-index:200;width:100%;max-width:var(--max-w);pointer-events:none}
.ptr-indicator{display:flex;align-items:center;justify-content:center;height:0;overflow:hidden;transition:height .15s;color:var(--c-muted);font-size:13px;gap:6px}
.ptr-indicator .ptr-icon{font-size:16px;transition:transform .2s}
.ptr-indicator.pulling .ptr-icon{transform:rotate(180deg)}
.ptr-indicator.refreshing{color:var(--c-primary)}

.skeleton{display:grid;grid-template-columns:1fr 1fr;gap:10px;padding:0 14px}
.skel-card{border-radius:var(--radius);overflow:hidden;background:var(--c-card)}
.skel-img{width:100%;aspect-ratio:1;background:linear-gradient(90deg,#e5e7eb 25%,#f0f0f0 50%,#e5e7eb 75%);background-size:200% 100%;animation:shimmer 1.5s infinite}
.skel-line{height:12px;margin:10px 10px 6px;border-radius:6px;background:linear-gradient(90deg,#e5e7eb 25%,#f0f0f0 50%,#e5e7eb 75%);background-size:200% 100%;animation:shimmer 1.5s infinite}
.skel-line.short{width:60%}
.skel-line.price{height:16px;width:40%;margin-bottom:10px}
@keyframes shimmer{0%{background-position:200% 0}100%{background-position:-200% 0}}

/* ========== Phone Input Group ========== */
.phone-group {
  display: flex;
  align-items: stretch;
  border: 1px solid var(--c-border);
  border-radius: 8px;
  overflow: hidden;
  transition: border-color .2s;
}
.phone-group:focus-within {
  border-color: var(--c-primary);
}
.phone-prefix {
  display: flex;
  align-items: center;
  padding: 0 12px;
  background: var(--c-bg);
  font-size: 14px;
  color: var(--c-muted);
  white-space: nowrap;
  border-right: 1px solid var(--c-border);
  user-select: none;
}
.phone-group input {
  border: none !important;
  border-radius: 0 !important;
  flex: 1;
  outline: none;
  padding: 0 12px;
  height: 42px;
  font-size: 14px;
}
.phone-group input:focus {
  border: none !important;
}

/* ========== Select Focus ========== */
.form-group select:focus {
  border-color: var(--c-primary);
  box-shadow: 0 0 0 2px rgba(46,107,198,.12);
}

/* ========== Card Type Icon ========== */
.card-type-icon {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 22px;
  opacity: .3;
  pointer-events: none;
  transition: opacity .2s;
}
.card-type-icon.active { opacity: 1; }
.card-input-wrap { position: relative; }