/* ============================================================
   TechBazar — Front-end stylesheet
   ============================================================ */
:root{
  --brand:#4f46e5;
  --brand-d:#4338ca;
  --brand-l:#eef2ff;
  --accent:#f59e0b;
  --ink:#0f172a;
  --muted:#64748b;
  --line:#e5e7eb;
  --bg:#f8fafc;
  --card:#ffffff;
  --ok:#16a34a;--ok-bg:#dcfce7;
  --warn:#d97706;--warn-bg:#fef3c7;
  --danger:#dc2626;--danger-bg:#fee2e2;
  --info:#2563eb;--info-bg:#dbeafe;
  --radius:14px;
  --shadow:0 1px 3px rgba(15,23,42,.08),0 8px 24px rgba(15,23,42,.04);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:'Hind Siliguri','Inter',system-ui,sans-serif;
  background:var(--bg);color:var(--ink);line-height:1.6;font-size:15px;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0 0 .5em;line-height:1.25;font-weight:700;letter-spacing:-.01em}
.container{max-width:1200px;margin:0 auto;padding:0 18px}
.muted{color:var(--muted)}
.page-wrap{padding:26px 18px 50px}
.page-title{font-size:1.6rem;margin-bottom:18px}
.section{margin:42px 0}
.section-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.section-head h2{font-size:1.4rem;margin:0}
.link-more{color:var(--brand);font-weight:600;font-size:.92rem}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:10px 18px;border:1px solid transparent;border-radius:10px;
  font-family:inherit;font-size:.92rem;font-weight:600;cursor:pointer;
  transition:.18s;white-space:nowrap;line-height:1;
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-d)}
.btn-secondary{background:var(--accent);color:#fff}
.btn-secondary:hover{filter:brightness(.95)}
.btn-outline{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand)}
.btn-danger{background:var(--danger);color:#fff}
.btn-danger:hover{filter:brightness(.93)}
.btn-disabled{background:#e2e8f0;color:#94a3b8;cursor:not-allowed}
.btn-block{width:100%}
.btn-sm{padding:6px 12px;font-size:.82rem;border-radius:8px}
.btn-lg{padding:14px 26px;font-size:1.02rem;border-radius:12px}

/* ---------- Header ---------- */
.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.topbar{background:var(--ink);color:#cbd5e1;font-size:.82rem}
.topbar-inner{display:flex;gap:18px;align-items:center;height:38px}
.topbar-right{margin-left:auto;color:#fff}
.header-main{display:flex;align-items:center;gap:24px;padding:16px 18px}
.logo{font-size:1.45rem;font-weight:800;color:var(--brand);white-space:nowrap}
.search-box{flex:1;display:flex;max-width:560px}
.search-box input{
  flex:1;border:1px solid var(--line);border-right:0;border-radius:10px 0 0 10px;
  padding:11px 16px;font-family:inherit;font-size:.92rem;outline:none;
}
.search-box input:focus{border-color:var(--brand)}
.search-box button{
  border:0;background:var(--brand);color:#fff;padding:0 22px;
  border-radius:0 10px 10px 0;cursor:pointer;font-family:inherit;font-weight:600;
}
.header-actions{display:flex;align-items:center;gap:18px}
.ha-item{font-size:.9rem;font-weight:600;color:var(--ink);transition:.15s}
.ha-item:hover{color:var(--brand)}
.cart-link{position:relative}
.cart-badge{
  background:var(--accent);color:#fff;font-size:.72rem;font-weight:700;
  border-radius:20px;padding:1px 7px;margin-left:2px;
}
.main-nav{border-top:1px solid var(--line);background:#fff}
.nav-inner{display:flex;gap:6px;flex-wrap:wrap;overflow-x:auto}
.main-nav a{padding:13px 14px;font-size:.9rem;font-weight:600;color:#334155;white-space:nowrap;border-bottom:2px solid transparent}
.main-nav a:hover{color:var(--brand);border-color:var(--brand)}

/* ---------- Flash ---------- */
.flash{padding:12px 16px;border-radius:10px;margin-bottom:14px;font-weight:500;font-size:.92rem}
.flash-success{background:var(--ok-bg);color:#166534}
.flash-error{background:var(--danger-bg);color:#991b1b}
.flash-info{background:var(--info-bg);color:#1e40af}

/* ---------- Hero ---------- */
.hero{
  background:linear-gradient(120deg,var(--brand) 0%,#7c3aed 100%);
  color:#fff;border-radius:22px;padding:54px 48px;margin:8px 0 14px;
  display:flex;align-items:center;gap:30px;overflow:hidden;position:relative;
}
.hero-text{flex:1;z-index:2}
.hero-badge{display:inline-block;background:rgba(255,255,255,.18);padding:6px 14px;border-radius:30px;font-size:.82rem;font-weight:600;margin-bottom:14px}
.hero h1{font-size:2.6rem;margin:0 0 14px;color:#fff}
.hero h1 span{color:#fde047}
.hero p{font-size:1.05rem;opacity:.92;max-width:520px;margin:0 0 24px}
.hero-art{font-size:6rem;line-height:1;display:flex;align-items:flex-end;gap:6px;filter:drop-shadow(0 12px 20px rgba(0,0,0,.25))}
.hero-art span{font-size:2.6rem}
@media(max-width:780px){.hero{padding:34px 24px}.hero h1{font-size:1.9rem}.hero-art{display:none}}

/* ---------- Category grid ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.cat-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 14px;text-align:center;transition:.2s;box-shadow:var(--shadow);
}
.cat-card:hover{transform:translateY(-4px);border-color:var(--brand)}
.cat-ic{font-size:2.2rem;margin-bottom:8px}
.cat-card span{display:block;font-weight:600;font-size:.95rem}

/* ---------- Product grid / card ---------- */
.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.product-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;transition:.2s;box-shadow:var(--shadow);
}
.product-card:hover{transform:translateY(-4px);box-shadow:0 12px 28px rgba(15,23,42,.12)}
.pc-img{position:relative;aspect-ratio:1;background:#f1f5f9;display:flex;align-items:center;justify-content:center}
.pc-img img{width:100%;height:100%;object-fit:contain;padding:14px}
.pc-tag{position:absolute;top:10px;left:10px;background:var(--danger);color:#fff;font-size:.72rem;font-weight:700;padding:3px 9px;border-radius:6px}
.pc-body{padding:14px;display:flex;flex-direction:column;gap:6px;flex:1}
.pc-brand{font-size:.74rem;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}
.pc-title{font-weight:600;font-size:.95rem;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:2.6em}
.pc-title:hover{color:var(--brand)}
.pc-price{margin-top:auto}
.pc-actions{margin-top:8px}
.price{font-size:1.12rem;font-weight:800;color:var(--brand)}
.price-old{font-size:.88rem;color:var(--muted);text-decoration:line-through;margin-left:6px}

/* ---------- Features bar ---------- */
.features-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:42px 0}
.feature{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;text-align:center}
.feature b{display:block;margin:6px 0 2px}

/* ---------- Breadcrumb / pagination ---------- */
.breadcrumb{font-size:.85rem;color:var(--muted);margin-bottom:16px}
.breadcrumb a:hover{color:var(--brand)}
.pagination{display:flex;gap:6px;justify-content:center;margin-top:28px;flex-wrap:wrap}
.pagination a{padding:8px 14px;border:1px solid var(--line);border-radius:8px;background:#fff;font-weight:600;font-size:.88rem}
.pagination a:hover{border-color:var(--brand);color:var(--brand)}
.pagination a.active{background:var(--brand);color:#fff;border-color:var(--brand)}

/* ---------- Shop layout ---------- */
.shop-layout{display:grid;grid-template-columns:250px 1fr;gap:24px;align-items:start}
.shop-sidebar{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;position:sticky;top:140px}
.filter-box{margin-bottom:22px}
.filter-box h4{font-size:.95rem;margin-bottom:10px}
.filter-cats{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.filter-cats a{display:block;padding:7px 10px;border-radius:8px;font-size:.9rem;color:#334155}
.filter-cats a:hover,.filter-cats a.active{background:var(--brand-l);color:var(--brand);font-weight:600}
.price-inputs{display:flex;gap:8px;align-items:center}
.price-inputs input{width:100%;border:1px solid var(--line);border-radius:8px;padding:8px;font-family:inherit}
.shop-toolbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;gap:12px;flex-wrap:wrap}
.sort-form select{border:1px solid var(--line);border-radius:8px;padding:9px 12px;font-family:inherit;background:#fff}
.shop-main .product-grid{grid-template-columns:repeat(3,1fr)}

/* ---------- Product detail ---------- */
.product-detail{display:grid;grid-template-columns:1fr 1fr;gap:36px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}
.pd-gallery{background:#f1f5f9;border-radius:var(--radius);display:flex;align-items:center;justify-content:center;padding:24px;aspect-ratio:1}
.pd-gallery img{max-height:100%;object-fit:contain}
.pd-brand{color:var(--muted);text-transform:uppercase;font-size:.8rem;letter-spacing:.05em}
.pd-info h1{font-size:1.7rem;margin:6px 0 10px}
.pd-rating{color:var(--accent);font-size:.95rem;margin-bottom:12px}
.pd-rating span{color:var(--muted);margin-left:6px}
.pd-price{margin:14px 0}
.pd-price .price{font-size:1.8rem}
.pd-short{color:#475569;margin:14px 0}
.pd-meta{font-size:.88rem;color:var(--muted);margin:14px 0;display:flex;flex-direction:column;gap:4px}
.in-stock{color:var(--ok);font-weight:600}
.out-stock{color:var(--danger);font-weight:600}
.pd-cart{display:flex;gap:12px;align-items:center;margin:20px 0;flex-wrap:wrap}
.qty-control{display:flex;align-items:center;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.qty-control button{width:40px;height:44px;border:0;background:#f1f5f9;font-size:1.2rem;cursor:pointer}
.qty-control button:hover{background:var(--brand-l);color:var(--brand)}
.qty-control input{width:54px;height:44px;text-align:center;border:0;border-left:1px solid var(--line);border-right:1px solid var(--line);font-family:inherit;font-size:1rem}
.pd-wish{margin-top:6px}
.pd-tabs{margin-top:36px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.pd-desc{color:#475569;white-space:pre-line}
.discount{color:var(--ok);font-weight:600;font-size:.85rem;margin-left:8px}

/* ---------- Reviews ---------- */
.rev-head{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.rev-stars{color:var(--accent)}
.review-item{border-top:1px solid var(--line);padding:14px 0}
.review-form{margin-top:20px;display:flex;flex-direction:column;gap:10px;max-width:560px}
.review-form textarea,.review-form select{border:1px solid var(--line);border-radius:10px;padding:10px;font-family:inherit}

/* ---------- Cart ---------- */
.cart-layout{display:grid;grid-template-columns:1fr 340px;gap:24px;align-items:start}
.cart-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.cart-table th{background:#f8fafc;text-align:left;padding:13px 14px;font-size:.82rem;color:var(--muted);text-transform:uppercase}
.cart-table td{padding:13px 14px;border-top:1px solid var(--line);vertical-align:middle}
.ct-prod{display:flex;align-items:center;gap:12px}
.ct-prod img{width:56px;height:56px;object-fit:contain;background:#f1f5f9;border-radius:8px;flex-shrink:0}
.ct-prod a{font-weight:600}
.ct-qty{width:70px;border:1px solid var(--line);border-radius:8px;padding:7px;text-align:center;font-family:inherit}
.ct-remove{border:0;background:var(--danger-bg);color:var(--danger);width:32px;height:32px;border-radius:8px;cursor:pointer;font-size:.9rem}
.ct-remove:hover{background:var(--danger);color:#fff}
.cart-actions{margin-top:16px}
.coupon-form{display:flex;gap:8px;margin-top:16px;max-width:420px}
.coupon-form input{flex:1;border:1px solid var(--line);border-radius:10px;padding:11px 14px;font-family:inherit}
.cart-summary{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;position:sticky;top:140px;box-shadow:var(--shadow)}
.cart-summary h3{font-size:1.15rem;margin-bottom:16px}
.sum-row{display:flex;justify-content:space-between;padding:9px 0;font-size:.95rem;border-bottom:1px dashed var(--line)}
.sum-row.grand{border-bottom:0;border-top:2px solid var(--ink);margin-top:6px;padding-top:14px;font-size:1.2rem;font-weight:800}
.sum-row.discount span:last-child{color:var(--ok)}

/* ---------- Checkout ---------- */
.checkout-layout{display:grid;grid-template-columns:1fr 340px;gap:24px;align-items:start}
.checkout-form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.checkout-form h3{margin-bottom:14px}
.co-item{display:flex;justify-content:space-between;padding:8px 0;font-size:.9rem;border-bottom:1px dashed var(--line)}
.pay-methods{display:flex;flex-direction:column;gap:10px;margin:10px 0}
.pay-opt{display:flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:10px;padding:12px 14px;cursor:pointer;transition:.15s}
.pay-opt:hover{border-color:var(--brand)}
.pay-opt input{accent-color:var(--brand)}

/* ---------- Forms (generic) ---------- */
label{display:block;font-weight:600;font-size:.88rem;margin-bottom:12px}
input,select,textarea{font-family:inherit}
label input,label select,label textarea{
  display:block;width:100%;margin-top:6px;border:1px solid var(--line);border-radius:10px;
  padding:11px 14px;font-size:.95rem;font-weight:400;outline:none;transition:.15s;
}
label input:focus,label select:focus,label textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-l)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.check-list{display:flex;flex-direction:column;gap:6px}

/* ---------- Auth ---------- */
.auth-card{max-width:430px;margin:30px auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow)}
.auth-card h1{font-size:1.5rem;text-align:center}
.auth-alt{text-align:center;margin-top:16px;font-size:.9rem;color:var(--muted)}
.auth-alt a{color:var(--brand);font-weight:600}
.auth-demo{background:var(--brand-l);border-radius:10px;padding:12px;font-size:.85rem;text-align:center;margin-top:16px;color:#3730a3}

/* ---------- Account ---------- */
.account-layout,.cart-layout,.shop-layout,.checkout-layout,.contact-layout{align-items:start}
.account-layout{display:grid;grid-template-columns:240px 1fr;gap:24px}
.account-nav{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px;display:flex;flex-direction:column;gap:4px;position:sticky;top:140px}
.account-nav a{padding:10px 14px;border-radius:8px;font-weight:600;font-size:.9rem;color:#334155}
.account-nav a:hover,.account-nav a.active{background:var(--brand-l);color:var(--brand)}
.account-main{display:flex;flex-direction:column;gap:20px}

/* ---------- Order detail / success ---------- */
.order-detail-grid{display:grid;grid-template-columns:1fr 320px;gap:24px;align-items:start}
.order-totals{margin-top:14px}
.success-box{max-width:560px;margin:30px auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:40px;text-align:center;box-shadow:var(--shadow)}
.success-ic{font-size:4rem;margin-bottom:10px}
.success-actions{display:flex;gap:12px;justify-content:center;margin-top:24px;flex-wrap:wrap}

/* ---------- Wishlist ---------- */
.wl-actions{margin-top:8px;display:flex;gap:8px}

/* ---------- Contact ---------- */
.contact-layout{display:grid;grid-template-columns:1fr 320px;gap:24px}
.contact-form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.contact-info{background:var(--brand);color:#fff;border-radius:var(--radius);padding:24px}
.contact-info a{color:#fde047}

/* ---------- Generic content page ---------- */
.content-page{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px;max-width:860px}
.content-page h1{font-size:1.7rem}
.content-page p{color:#475569}

/* ---------- Card / table / badge (shared) ---------- */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.card h3{font-size:1.1rem;margin-bottom:14px}
.data-table{width:100%;border-collapse:collapse}
.data-table th{text-align:left;padding:11px 12px;font-size:.8rem;text-transform:uppercase;color:var(--muted);border-bottom:1px solid var(--line)}
.data-table td{padding:11px 12px;border-bottom:1px solid var(--line);font-size:.92rem}
.badge{display:inline-block;padding:3px 10px;border-radius:30px;font-size:.76rem;font-weight:700}
.badge-ok{background:var(--ok-bg);color:#166534}
.badge-warn{background:var(--warn-bg);color:#92400e}
.badge-danger{background:var(--danger-bg);color:#991b1b}
.badge-info{background:var(--info-bg);color:#1e40af}

/* ---------- Empty state ---------- */
.empty-state{text-align:center;padding:60px 20px;color:var(--muted)}
.empty-state .ic{font-size:3.4rem;margin-bottom:10px}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:#cbd5e1;margin-top:50px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:28px;padding:48px 18px 30px}
.site-footer h4{color:#fff;font-size:1rem;margin-bottom:14px}
.site-footer ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.site-footer a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);text-align:center;padding:18px;font-size:.85rem}

/* ---------- Responsive ---------- */
@media(max-width:960px){
  .cat-grid,.product-grid,.shop-main .product-grid,.features-bar{grid-template-columns:repeat(2,1fr)}
  .shop-layout,.cart-layout,.checkout-layout,.account-layout,.order-detail-grid,.contact-layout,.product-detail{grid-template-columns:1fr}
  .shop-sidebar,.cart-summary,.account-nav{position:static}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:600px){
  .header-main{flex-wrap:wrap;gap:12px}
  .search-box{order:3;max-width:none;width:100%}
  .cat-grid,.product-grid,.shop-main .product-grid,.features-bar,.footer-grid{grid-template-columns:1fr 1fr}
  .topbar-inner span:not(.topbar-right){display:none}
  /* responsive cart table -> stacked */
  .cart-table thead{display:none}
  .cart-table,.cart-table tbody,.cart-table tr,.cart-table td{display:block;width:100%}
  .cart-table tr{border-top:1px solid var(--line);padding:8px 0}
  .cart-table td{border:0;display:flex;justify-content:space-between;align-items:center;padding:6px 14px}
  .cart-table td[data-label]::before{content:attr(data-label);font-weight:600;color:var(--muted)}
  .ct-prod{justify-content:flex-start}
}
@media(max-width:420px){
  .cat-grid,.product-grid,.features-bar{grid-template-columns:1fr}
}