/* VoltStore — Tech Blue Electronics Store */
:root{
--bg:#f4f7fb;--navy:#0b1f3a;--blue:#2563eb;--blue-soft:#dbeafe;--panel:#fff;
--ink:#0f172a;--muted:#64748b;--line:#e2e8f0;--green:#16a34a;
--font-display:'Space Grotesk',sans-serif;--font-body:'IBM Plex Sans',sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-body);background:var(--bg);color:var(--ink);line-height:1.6}
a{text-decoration:none;color:inherit}img{max-width:100%;display:block}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}

.announce{background:var(--navy);color:#fff;text-align:center;font-size:.82rem;font-weight:600;padding:9px 12px}
.announce i{color:#60a5fa;margin-right:6px}
.header{position:sticky;top:0;z-index:100;background:rgba(244,247,251,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;gap:16px;height:72px}
.logo{font-family:var(--font-display);font-weight:700;font-size:1.25rem;display:flex;align-items:center;gap:8px;white-space:nowrap}
.logo i{color:var(--blue)}
.logo span{color:var(--blue)}
.search-box{flex:1;display:flex;align-items:center;gap:10px;background:#fff;border:1.5px solid var(--line);border-radius:12px;padding:10px 14px}
.search-box i{color:var(--muted)}
.search-box input{border:none;outline:none;width:100%;font-family:var(--font-body);font-size:.95rem;background:transparent}
.nav{display:flex;gap:18px;font-weight:600;font-size:.9rem;color:var(--muted)}
.nav a:hover{color:var(--blue)}
.cart{background:var(--blue);color:#fff;border:none;border-radius:12px;padding:10px 16px;font-weight:700;cursor:pointer;font-family:var(--font-body);display:flex;align-items:center;gap:8px}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border-radius:12px;font-weight:700;font-size:.9rem;border:none;cursor:pointer;font-family:var(--font-body);transition:.25s}
.btn-blue{background:var(--blue);color:#fff}.btn-blue:hover{background:#1d4ed8;transform:translateY(-1px)}
.btn-ghost{background:#fff;border:1.5px solid var(--line)}.btn-ghost:hover{border-color:var(--blue);color:var(--blue)}
.btn-full{width:100%}

.hero{padding:40px 0 20px}
.hero-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:36px;align-items:center}
.eyebrow,.catalog-head span,.order-grid span{display:block;font-size:.75rem;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:var(--blue);margin-bottom:10px}
.hero h1{font-family:var(--font-display);font-size:clamp(2.4rem,5vw,3.4rem);line-height:1.1;margin-bottom:14px}
.hero-copy > p{color:var(--muted);max-width:440px;margin-bottom:24px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:24px}
.brands{display:flex;gap:14px;flex-wrap:wrap}
.brands span{background:#fff;border:1px solid var(--line);padding:6px 12px;border-radius:999px;font-size:.78rem;font-weight:700;color:var(--muted)}
.hero-banner{position:relative;border-radius:20px;overflow:hidden;background:var(--navy)}
.hero-banner img{width:100%;height:360px;object-fit:cover;opacity:.95}
.banner-tag{position:absolute;bottom:20px;left:20px;background:#fff;border-radius:14px;padding:14px 18px}
.banner-tag strong{display:block;font-family:var(--font-display);font-size:1.6rem;color:var(--blue);line-height:1}
.banner-tag span{font-size:.85rem;color:var(--muted);font-weight:600}

.cats{padding:10px 0 20px}
.cats-grid{display:flex;gap:10px;overflow-x:auto;padding-bottom:4px}
.cats-grid button{flex:0 0 auto;background:#fff;border:1.5px solid var(--line);border-radius:12px;padding:12px 16px;font-family:var(--font-body);font-weight:700;font-size:.85rem;cursor:pointer;color:var(--muted);display:flex;align-items:center;gap:8px}
.cats-grid button.active,.cats-grid button:hover{background:var(--blue);border-color:var(--blue);color:#fff}

.section{padding:60px 0}
.section-navy{background:var(--navy);color:#fff}
.section-gray{background:#eef2f7}
.catalog-head{display:flex;justify-content:space-between;align-items:end;gap:20px;flex-wrap:wrap;margin-bottom:24px}
.catalog-head h2,.order-grid h2{font-family:var(--font-display);font-size:clamp(1.8rem,3.5vw,2.4rem)}
.tools{display:flex;align-items:center;gap:16px;color:var(--muted);font-size:.9rem}
.tools select{border:1.5px solid var(--line);border-radius:10px;padding:8px 12px;font-family:var(--font-body);background:#fff}

.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.product{background:var(--panel);border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:.25s;display:flex;flex-direction:column}
.product:hover{box-shadow:0 12px 30px rgba(15,23,42,.08);transform:translateY(-3px)}
.product.hidden{display:none}
.product-img{position:relative;aspect-ratio:1;background:#f8fafc}
.product-img img{width:100%;height:100%;object-fit:cover}
.badge{position:absolute;top:10px;left:10px;background:#ef4444;color:#fff;font-size:.68rem;font-weight:800;padding:4px 8px;border-radius:6px}
.badge.blue{background:var(--blue)}
.product-body{padding:14px 14px 16px;display:flex;flex-direction:column;flex:1}
.product-body h3{font-family:var(--font-display);font-size:.98rem;margin-bottom:4px;line-height:1.3}
.rating{color:#f59e0b;font-size:.78rem;font-weight:700;margin-bottom:8px}
.rating span{color:var(--muted);font-weight:500}
.product-foot{margin-top:auto;display:flex;align-items:end;justify-content:space-between;gap:8px}
.price-wrap s{display:block;color:var(--muted);font-size:.75rem}
.price-wrap strong{color:var(--blue);font-size:1.05rem}
.add-btn{background:var(--blue-soft);color:var(--blue);border:none;border-radius:10px;width:36px;height:36px;cursor:pointer}
.add-btn:hover{background:var(--blue);color:#fff}

.promo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.promo-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:18px;padding:28px 24px}
.promo-card.light{background:#fff;color:var(--ink)}
.promo-card span{font-size:.72rem;font-weight:800;letter-spacing:1.5px;color:#93c5fd}
.promo-card.light span{color:var(--blue)}
.promo-card h3{font-family:var(--font-display);font-size:1.5rem;margin:10px 0}
.promo-card p{color:rgba(255,255,255,.65);font-size:.92rem;margin-bottom:18px}
.promo-card.light p{color:var(--muted)}
.promo-card a{font-weight:700;color:#93c5fd}
.promo-card.light a{color:var(--blue)}

.why{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.why-item{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px 18px}
.why-item i{color:var(--blue);font-size:1.3rem;margin-bottom:12px}
.why-item h3{font-family:var(--font-display);font-size:1.1rem;margin-bottom:6px}
.why-item p{color:var(--muted);font-size:.85rem}

.order-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:36px}
.pay{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}
.pay span{background:#fff;border:1px solid var(--line);padding:6px 12px;border-radius:999px;font-size:.78rem;font-weight:700;color:var(--muted)}
.order-box{background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px}
.order-box h3{font-family:var(--font-display);margin-bottom:14px}
.cart-list{min-height:70px;margin-bottom:12px}
.cart-item{display:flex;justify-content:space-between;gap:10px;padding:10px 0;border-bottom:1px solid var(--line);font-size:.88rem;font-weight:600}
.cart-item button{background:none;border:none;color:var(--muted);cursor:pointer}
.empty{color:var(--muted)}
.cart-total{display:flex;justify-content:space-between;margin:14px 0;font-size:1.05rem}
.order-box form{display:flex;flex-direction:column;gap:10px}
.order-box input,.order-box select{padding:12px 14px;border:1.5px solid var(--line);border-radius:10px;font-family:var(--font-body)}
.order-box input:focus,.order-box select:focus{outline:none;border-color:var(--blue)}

.footer{padding:28px 0;border-top:1px solid var(--line);background:#fff}
.foot{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;color:var(--muted);font-size:.9rem}
.foot a{color:var(--blue);font-weight:700}

@media(max-width:1000px){
.hero-grid,.order-grid{grid-template-columns:1fr}
.product-grid{grid-template-columns:repeat(3,1fr)}
.promo-grid,.why{grid-template-columns:1fr 1fr}
.nav{display:none}
}
@media(max-width:640px){
.product-grid,.promo-grid,.why{grid-template-columns:1fr}
.search-box{display:none}
.bar{gap:10px}
}