:root{
  --green:#14482e;
  --orange:#fa9928;
  --footer-bg:#222327;
  --text:#777;
  --text-light:#999;
  --border:#e5e5e5;
  --maxw:1140px;
}
*{box-sizing:border-box}
body{margin:0;font-family:"Raleway",Arial,sans-serif;font-size:15px;color:var(--text);line-height:1.7;
  background:#efe9dd url('https://bc-institut.com.tr/wp-content/uploads/2021/04/bc_ljeto.jpg') center top / cover fixed no-repeat}
h1,h2,h3,h4{font-family:"Roboto Slab",Arial,serif;color:#222;line-height:1.3;margin:0 0 .6em;font-weight:600}
p{margin:0 0 1.1em}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.layout-boxed{max-width:1300px;margin:0 auto;background:#fff;box-shadow:0 0 60px rgba(0,0,0,.25);min-height:100vh}
.section{padding:44px 0}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 30px;border-radius:3px;font-weight:600;
  font-size:.9rem;border:0;cursor:pointer;text-transform:uppercase;letter-spacing:.03em}
.btn-primary{background:var(--orange);color:#fff}
.btn-primary:hover{background:#e0800f}

/* header */
.site-header{background:var(--green)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:10px 20px}
.logo img{display:block;border-radius:50%}
.main-nav ul{list-style:none;display:flex;gap:4px;margin:0;padding:0}
.main-nav a{display:block;padding:10px 16px;font-weight:500;color:#fff;font-size:.95rem;border-radius:3px}
.main-nav a:hover,.main-nav a.active{color:var(--orange)}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.nav-toggle span{width:24px;height:2px;background:#fff}

/* hero slider */
.hero-slider{position:relative;height:460px;overflow:hidden;background:#333}
.hero-slide{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0;transition:opacity 1s ease}
.hero-slide.active{opacity:1}
.hero-dots{position:absolute;bottom:20px;left:0;right:0;display:flex;justify-content:center;gap:8px;z-index:3}
.hero-dot{width:11px;height:11px;border-radius:50%;background:rgba(255,255,255,.55);border:0;cursor:pointer;padding:0}
.hero-dot.active{background:#fff}
.hero-arrow{position:absolute;top:50%;transform:translateY(-50%);background:rgba(0,0,0,.25);color:#fff;
  border:0;width:42px;height:42px;font-size:1.6rem;cursor:pointer;z-index:3;line-height:1}
.hero-arrow-prev{left:0}
.hero-arrow-next{right:0}
.hero-arrow:hover{background:rgba(0,0,0,.45)}

/* ribbon section headers */
.ribbon{background:var(--green)}
.ribbon h2{color:#fff;margin:0;padding:16px 0;font-size:1.3rem}

/* breadcrumb */
.breadcrumb{background:#f7f7f7;border-bottom:1px solid var(--border);font-size:.85rem;color:var(--text-light)}
.breadcrumb .container{padding:12px 20px}
.breadcrumb a{color:var(--text-light)}
.breadcrumb a:hover{color:var(--orange)}
.breadcrumb .sep{margin:0 4px;opacity:.6}
.breadcrumb span:last-child{color:#555}

/* category cards (homepage) */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px}
.cat-card{display:block;border:1px solid var(--border)}
.cat-card-media{aspect-ratio:280/300;overflow:hidden}
.cat-card-media img{width:100%;height:100%;object-fit:cover;transition:.3s}
.cat-card:hover .cat-card-media img{transform:scale(1.06)}
.cat-card-label{padding:12px 14px;text-align:center;font-weight:600;color:#333;border-top:1px solid var(--border)}

/* catalogs (view on-site + optional download) */
.catalog-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:30px}
.catalog-card{border:1px solid var(--border);background:#fff;text-align:center;transition:box-shadow .2s}
.catalog-card:hover{box-shadow:0 6px 18px rgba(0,0,0,.12)}
.catalog-card-link{display:block;color:inherit}
.catalog-card-media{aspect-ratio:560/790;overflow:hidden;border-bottom:1px solid var(--border)}
.catalog-card-media img{width:100%;height:100%;object-fit:cover;transition:.3s}
.catalog-card:hover .catalog-card-media img{transform:scale(1.04)}
.catalog-card-label{padding:14px 16px 4px;font-weight:600;color:#333}
.catalog-card-sub{padding:0 16px 16px;font-size:.85rem;color:#777}
.catalog-card-actions{display:flex;gap:8px;padding:0 16px 16px}
.catalog-btn{flex:1;display:inline-block;padding:9px 14px;font-weight:600;font-size:.85rem;border-radius:2px;text-align:center;transition:.2s}
.catalog-btn-primary{background:var(--orange);color:#fff}
.catalog-btn-primary:hover{background:#e08a10}
.catalog-btn-outline{background:#fff;color:var(--green);border:1px solid var(--green)}
.catalog-btn-outline:hover{background:var(--green);color:#fff}

/* catalog view page (embedded PDF) */
.catalog-view-head{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:18px}
.catalog-view-head h1{margin:0 0 4px}
.catalog-view-sub{color:#777;margin:0}
.catalog-view-head .catalog-btn{flex:none}
.catalog-view-frame{border:1px solid var(--border);background:#525659;height:80vh;min-height:520px}
.catalog-view-frame iframe{width:100%;height:100%;border:0}
.catalog-view-fallback{margin-top:14px;font-size:.9rem;color:#777}

/* news */
.news-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:22px}
.news-card{display:block;border:1px solid var(--border)}
.news-card-media img{width:100%}
.news-card-body{padding:14px 16px}
.news-card-body h3{margin:0;font-size:1.05rem}

/* quick contact / dealer form */
.quick-contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:50px}
.icon-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:16px}
.icon-list li{display:flex;gap:12px;align-items:flex-start}
.icon-list span[class^="icon-"]{width:20px;height:20px;flex:none;margin-top:4px;border-radius:50%;
  background:var(--orange);position:relative}
.icon-list strong{color:#333;display:block;font-size:.85rem;text-transform:uppercase;letter-spacing:.02em}
.dealer-form,.contact-form{background:#f7f7f7;padding:28px;border:1px solid var(--border)}
.dealer-form input,.contact-form input,.contact-form textarea{
  width:100%;font:inherit;padding:12px 14px;border:1px solid var(--border);margin-bottom:14px;background:#fff}
.contact-form label{display:block;font-size:.85rem;color:#555;margin-bottom:4px;font-weight:500}

/* shop layout: sidebar + main */
.shop-layout{display:grid;grid-template-columns:250px 1fr;gap:36px;align-items:start}
.shop-sidebar{border:1px solid var(--border);padding:20px}
.shop-sidebar h3{font-size:1rem;margin-bottom:14px}
.shop-sidebar ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.shop-sidebar li::before{content:"";display:inline-block;width:7px;height:7px;border-radius:50%;
  background:var(--orange);margin-right:9px}
.shop-sidebar a{color:#555;font-size:.92rem}
.shop-sidebar li.active a,.shop-sidebar a:hover{color:var(--orange)}
.shop-title{font-size:1.4rem;margin-bottom:22px}
.subcat-block{margin-bottom:38px}
.subcat-title{font-size:1.05rem;padding-bottom:8px;border-bottom:2px solid var(--border);margin-bottom:16px}

/* product grid */
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.prod-card{display:block;border:1px solid var(--border)}
.prod-card-media{aspect-ratio:1/1;overflow:hidden;background:#f2f2f2}
.prod-card-media img{width:100%;height:100%;object-fit:cover;transition:.3s}
.prod-card:hover .prod-card-media img{transform:scale(1.06)}
.prod-card-label{padding:12px 14px;text-align:center;font-weight:600;color:#333;border-top:1px solid var(--border)}

/* product detail */
.product-detail-grid{display:grid;grid-template-columns:340px 1fr;gap:36px;margin-bottom:36px}
.product-media img{border:1px solid var(--border)}
.product-info h1{font-size:1.6rem;margin-bottom:16px;padding-bottom:14px;border-bottom:1px solid var(--border)}
.check-list{list-style:none;margin:0 0 16px;padding:0;display:flex;flex-direction:column;gap:8px}
.check-list li{padding-left:18px;position:relative;font-size:.94rem}
.check-list li::before{content:"\2022";position:absolute;left:0;color:var(--orange);font-weight:700}
.prod-category-line{font-size:.9rem;color:#555;margin-top:16px}
.prod-category-line a{color:var(--orange)}
.product-description{border-top:3px solid var(--orange);padding-top:22px}
.desc-tab{display:inline-block;background:var(--orange);color:#fff;font-size:.78rem;font-weight:700;
  letter-spacing:.05em;padding:6px 16px;margin-bottom:14px}
.fao-line{font-weight:600;color:#333}

/* about */
.about-content{max-width:820px;margin:0 auto}
.about-content h1{font-size:1.7rem}
blockquote{margin:26px 0;padding:20px 24px;background:#f7f7f7;border-left:4px solid var(--orange);
  font-style:italic;color:#444}
.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;text-align:center;margin-top:30px}
.stat-num{display:block;font-size:2.1rem;font-weight:700;color:var(--orange);font-family:"Roboto Slab",serif}
.stat-label{color:var(--text);font-size:.88rem}

/* article */
.article-content{max-width:760px;margin:0 auto}
.article-media{width:100%;margin:18px 0;border:1px solid var(--border)}
.lorem-ipsum{color:#999;font-size:.85rem}

/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:46px}
.map-embed{width:100%;height:280px;border:1px solid var(--border);margin-top:20px}

/* footer */
.site-footer{background:var(--footer-bg);color:var(--text-light)}
.footer-grid{display:grid;grid-template-columns:1fr 1.6fr 1fr 1.2fr;gap:32px;padding:50px 20px 36px}
.footer-logo-col img{border-radius:50%}
.footer-col h4{color:#fff;font-size:1.05rem;margin-bottom:16px;font-family:"Roboto Slab",serif}
.footer-col p{font-size:.87rem;color:#888}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:9px;font-size:.9rem}
.footer-col li::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;
  background:var(--orange);margin-right:9px}
.footer-col a{color:var(--text-light)}
.footer-col a:hover{color:var(--orange)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:16px 0;font-size:.82rem;color:#777}

/* responsive */
@media (max-width:900px){
  .main-nav{position:fixed;top:0;left:0;right:0;bottom:0;background:var(--green);transform:translateX(100%);
    transition:.25s;z-index:40;padding:80px 24px 24px;overflow:auto}
  .main-nav.open{transform:translateX(0)}
  .main-nav ul{flex-direction:column;gap:2px}
  .nav-toggle{display:flex;z-index:41}
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .product-grid{grid-template-columns:repeat(2,1fr)}
  .quick-contact-grid,.contact-grid,.shop-layout,.product-detail-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .hero-slider{height:280px}
}
@media (max-width:520px){
  .cat-grid,.product-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr}
}