*{margin:0;padding:0;box-sizing:border-box}
:root{
  --blue:#1a56db;--blue-dark:#1240a8;--blue-light:#e8f0fe;
  --text:#1a1a2e;--gray:#6b7280;--light:#f8fafc;--white:#fff;
  --border:#e2e8f0;
}
body{font-family:'Segoe UI',system-ui,sans-serif;color:var(--text);background:var(--white)}
a{text-decoration:none;color:inherit}

/* HEADER */
header{background:var(--white);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;box-shadow:0 1px 8px rgba(0,0,0,.06)}
.header-inner{max-width:1200px;margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-size:1.6rem;font-weight:800;color:var(--blue);letter-spacing:-1px}
.logo span{color:var(--text)}
nav{display:flex;gap:20px;flex-wrap:wrap}
nav a{font-size:.88rem;font-weight:500;color:var(--gray);transition:.2s}
nav a:hover{color:var(--blue)}
.header-right{display:flex;align-items:center;gap:16px}
.phone{font-weight:600;color:var(--text);font-size:.95rem}

/* BUTTONS */
.btn{display:inline-flex;align-items:center;gap:6px;background:var(--blue);color:var(--white);padding:9px 20px;border-radius:8px;font-size:.85rem;font-weight:600;border:none;cursor:pointer;transition:.2s}
.btn:hover{background:var(--blue-dark)}
.btn-outline{background:transparent;border:2px solid var(--blue);color:var(--blue)}
.btn-outline:hover{background:var(--blue);color:var(--white)}
.btn-white{background:var(--white);color:var(--blue);font-weight:700}
.btn-white:hover{background:#e8f0fe}
.btn-sm{padding:8px 16px;font-size:.8rem;border-radius:7px}
.btn-lg{padding:14px 32px;font-size:1rem;border-radius:10px}

/* LAYOUT */
section{padding:64px 20px}
.container{max-width:1200px;margin:0 auto}
.section-title{font-size:1.8rem;font-weight:800;margin-bottom:8px}
.section-sub{color:var(--gray);margin-bottom:40px;font-size:.95rem}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:40px}
.see-all{color:var(--blue);font-weight:600;font-size:.9rem;cursor:pointer}
.see-all:hover{text-decoration:underline}

/* HERO */
.hero{background:linear-gradient(135deg,#0f2460 0%,#1a56db 60%,#2563eb 100%);color:var(--white);padding:80px 20px}
.hero-inner{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.hero h1{font-size:2.8rem;font-weight:800;line-height:1.15;margin-bottom:18px}
.hero h1 span{color:#93c5fd}
.hero p{font-size:1.1rem;opacity:.85;margin-bottom:32px;line-height:1.6}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}
.hero-card{background:rgba(255,255,255,.12);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.2);border-radius:20px;padding:32px;display:grid;grid-template-columns:1fr 1fr;gap:16px}
.hc-item{background:rgba(255,255,255,.15);border-radius:12px;padding:20px;text-align:center;font-size:.85rem;font-weight:600;color:#fff}
.hc-item .icon{font-size:2rem;margin-bottom:8px}

/* CATEGORIES */
.cats{background:var(--light)}
.cats-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.cat-card{background:var(--white);border:1px solid var(--border);border-radius:14px;padding:24px 16px;text-align:center;cursor:pointer;transition:.2s;display:block}
.cat-card:hover{border-color:var(--blue);box-shadow:0 4px 20px rgba(26,86,219,.12);transform:translateY(-3px)}
.cat-card .icon{font-size:2.4rem;margin-bottom:12px}
.cat-card h3{font-size:.85rem;font-weight:600;color:var(--text)}
.cat-card p{font-size:.75rem;color:var(--gray);margin-top:4px}

/* PRODUCT CARDS */
.products-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.prod-card{border:1px solid var(--border);border-radius:14px;overflow:hidden;transition:.2s;background:var(--white);display:block}
.prod-card:hover{box-shadow:0 8px 30px rgba(0,0,0,.1);transform:translateY(-4px)}
.prod-img{background:linear-gradient(135deg,#e8f0fe,#dbeafe);height:180px;display:flex;align-items:center;justify-content:center;font-size:4rem;position:relative}
.badge{position:absolute;top:12px;left:12px;background:var(--blue);color:var(--white);font-size:.7rem;font-weight:700;padding:3px 10px;border-radius:20px}
.badge-red{background:#ef4444}
.badge-green{background:#10b981}
.prod-body{padding:16px}
.prod-brand{font-size:.75rem;color:var(--blue);font-weight:600;text-transform:uppercase;letter-spacing:.5px;margin-bottom:4px}
.prod-name{font-size:.95rem;font-weight:700;margin-bottom:8px;line-height:1.3;color:var(--text)}
.prod-specs{font-size:.78rem;color:var(--gray);margin-bottom:14px;line-height:1.5}
.prod-footer{display:flex;align-items:center;justify-content:space-between}
.price{font-size:1.15rem;font-weight:800;color:var(--blue)}
.price-old{font-size:.8rem;color:var(--gray);text-decoration:line-through;margin-top:2px}

/* ADVANTAGES */
.adv{background:var(--blue);color:var(--white)}
.adv .section-title{color:var(--white)}
.adv .section-sub{color:rgba(255,255,255,.7)}
.adv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.adv-card{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.15);border-radius:14px;padding:28px 20px;text-align:center}
.adv-card .icon{font-size:2.2rem;margin-bottom:14px}
.adv-card h3{font-size:1rem;font-weight:700;margin-bottom:8px}
.adv-card p{font-size:.82rem;opacity:.8;line-height:1.5}

/* ABOUT */
.about{background:var(--light)}
.about-inner{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.about-text h2{font-size:2rem;font-weight:800;margin-bottom:16px}
.about-text p{color:var(--gray);line-height:1.7;margin-bottom:14px}
.about-stats{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px}
.stat{background:var(--white);border:1px solid var(--border);border-radius:12px;padding:20px;text-align:center}
.stat h3{font-size:1.8rem;font-weight:800;color:var(--blue)}
.stat p{font-size:.8rem;color:var(--gray);margin-top:4px}
.about-visual{background:linear-gradient(135deg,#1a56db,#0f2460);border-radius:20px;padding:40px;color:var(--white);text-align:center}
.about-visual .big-icon{font-size:5rem;margin-bottom:20px}
.about-visual h3{font-size:1.3rem;font-weight:700;margin-bottom:10px}
.about-visual p{opacity:.8;font-size:.9rem;line-height:1.6}

/* FORM */
.form-section{background:var(--white)}
.form-wrap{background:linear-gradient(135deg,#0f2460,#1a56db);border-radius:20px;padding:56px;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.form-text{color:var(--white)}
.form-text h2{font-size:2rem;font-weight:800;margin-bottom:14px}
.form-text p{opacity:.8;line-height:1.6;font-size:.95rem}
.form-text ul{margin-top:20px;list-style:none;display:flex;flex-direction:column;gap:10px}
.form-text ul li{display:flex;align-items:center;gap:10px;font-size:.9rem;opacity:.9}
.form-text ul li::before{content:"✓";background:rgba(255,255,255,.2);border-radius:50%;width:22px;height:22px;display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0}
.form-box{background:var(--white);border-radius:14px;padding:32px}
.form-box h3{font-size:1.2rem;font-weight:700;margin-bottom:24px}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:.82rem;font-weight:600;color:var(--gray);margin-bottom:6px}
.form-group input,.form-group textarea,.form-group select{width:100%;border:1.5px solid var(--border);border-radius:8px;padding:11px 14px;font-size:.9rem;font-family:inherit;outline:none;transition:.2s}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{border-color:var(--blue)}
.form-group textarea{height:80px;resize:none}
.form-box .btn{width:100%;justify-content:center;padding:13px}

/* SUCCESS / ERROR MESSAGES */
.alert{padding:14px 20px;border-radius:10px;margin-bottom:20px;font-weight:600;font-size:.9rem}
.alert-success{background:#d1fae5;color:#065f46;border:1px solid #6ee7b7}
.alert-error{background:#fee2e2;color:#991b1b;border:1px solid #fca5a5}

/* PRODUCT PAGE */
.product-page{padding:40px 20px}
.product-inner{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}
.product-image{background:linear-gradient(135deg,#e8f0fe,#dbeafe);border-radius:16px;height:360px;display:flex;align-items:center;justify-content:center;font-size:8rem}
.product-info h1{font-size:1.8rem;font-weight:800;margin-bottom:8px}
.product-brand{color:var(--blue);font-weight:600;font-size:.9rem;text-transform:uppercase;margin-bottom:16px}
.product-price{font-size:2rem;font-weight:800;color:var(--blue);margin-bottom:6px}
.product-price-old{font-size:1rem;color:var(--gray);text-decoration:line-through;margin-bottom:20px}
.product-specs{background:var(--light);border-radius:12px;padding:20px;margin:20px 0}
.product-specs h3{font-weight:700;margin-bottom:12px}
.product-specs p{font-size:.88rem;color:var(--gray);line-height:1.8}
.breadcrumb{font-size:.82rem;color:var(--gray);margin-bottom:24px}
.breadcrumb a{color:var(--blue)}
.breadcrumb a:hover{text-decoration:underline}

/* CATALOG PAGE */
.catalog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}

/* FOOTER */
footer{background:#0f1a3a;color:var(--white);padding:48px 20px 24px}
.footer-inner{max-width:1200px;margin:0 auto}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-brand .logo{font-size:1.4rem;margin-bottom:12px;display:block}
.footer-brand p{font-size:.85rem;opacity:.6;line-height:1.6}
.footer-col h4{font-size:.9rem;font-weight:700;margin-bottom:16px;opacity:.9}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:9px}
.footer-col ul li a{font-size:.83rem;opacity:.6;transition:.2s}
.footer-col ul li a:hover{opacity:1;color:#93c5fd}
.footer-contacts p{font-size:.83rem;opacity:.6;margin-bottom:8px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:20px;display:flex;justify-content:space-between;align-items:center}
.footer-bottom p{font-size:.8rem;opacity:.4}

/* ADMIN */
.admin-wrap{max-width:1100px;margin:40px auto;padding:0 20px}
.admin-header{background:var(--blue);color:#fff;padding:16px 28px;border-radius:12px;display:flex;justify-content:space-between;align-items:center;margin-bottom:28px}
.admin-header h1{font-size:1.2rem;font-weight:700}
.admin-nav{display:flex;gap:12px}
.admin-nav a{background:rgba(255,255,255,.15);color:#fff;padding:7px 16px;border-radius:7px;font-size:.85rem;font-weight:600;transition:.2s}
.admin-nav a:hover{background:rgba(255,255,255,.3)}
table{width:100%;border-collapse:collapse;background:var(--white);border-radius:12px;overflow:hidden;box-shadow:0 1px 8px rgba(0,0,0,.06)}
th{background:var(--light);padding:12px 16px;text-align:left;font-size:.82rem;color:var(--gray);font-weight:700;border-bottom:1px solid var(--border)}
td{padding:12px 16px;font-size:.88rem;border-bottom:1px solid var(--border)}
tr:last-child td{border-bottom:none}
tr:hover td{background:#f9fafb}
.tag{display:inline-block;padding:3px 10px;border-radius:20px;font-size:.72rem;font-weight:700}
.tag-blue{background:var(--blue-light);color:var(--blue)}

/* SEARCH */
.search-form-desktop{display:flex;align-items:center;border:1.5px solid var(--border);border-radius:8px;overflow:hidden;background:#fff}
.search-form-desktop input{border:none;outline:none;padding:7px 12px;font-size:.85rem;width:160px;font-family:inherit}
.search-form-desktop button{background:var(--blue);border:none;color:#fff;padding:7px 12px;cursor:pointer;font-size:.9rem}
.search-form-desktop button:hover{background:var(--blue-dark)}
.search-form-mobile{display:none}

/* BURGER */
.burger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:4px}
.burger span{display:block;width:24px;height:2px;background:var(--text);border-radius:2px;transition:.3s}
.burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* RESPONSIVE */
@media(max-width:900px){
  .hero-inner,.about-inner,.form-wrap,.product-inner{grid-template-columns:1fr}
  .hero h1{font-size:2rem}
  .cats-grid{grid-template-columns:repeat(3,1fr)}
  .products-grid,.catalog-grid{grid-template-columns:repeat(2,1fr)}
  .adv-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}

  /* Скрываем десктопный поиск и показываем бургер */
  .search-form-desktop{display:none}
  .burger{display:flex}

  /* Мобильное меню */
  #main-nav{
    display:none;
    position:absolute;top:64px;left:0;right:0;
    background:#fff;
    flex-direction:column;
    padding:16px 20px;
    border-top:1px solid var(--border);
    box-shadow:0 8px 24px rgba(0,0,0,.1);
    z-index:99;
    gap:0;
  }
  #main-nav.open{display:flex}
  #main-nav a{padding:12px 0;border-bottom:1px solid var(--border);font-size:1rem;color:var(--text)}
  #main-nav a:last-of-type{border-bottom:none}
  .search-form-mobile{display:flex;gap:8px;margin-top:12px;padding-top:12px;border-top:1px solid var(--border)}
  .search-form-mobile input{flex:1;border:1.5px solid var(--border);border-radius:8px;padding:9px 12px;font-size:.9rem;outline:none;font-family:inherit}
  .search-form-mobile input:focus{border-color:var(--blue)}

  header{position:relative}
}
@media(max-width:560px){
  .cats-grid,.products-grid,.catalog-grid{grid-template-columns:1fr 1fr}
  .adv-grid{grid-template-columns:1fr}
  .form-wrap{padding:28px 20px}
  .footer-grid{grid-template-columns:1fr}
  .header-inner{padding:0 16px}
  .phone{display:none}
  .hero{padding:48px 16px}
  .hero h1{font-size:1.6rem}
}