/* style.css - SJ Industrial Ovens (Blue-Silver theme) */
:root{
  --blue:#0d2244;
  --accent:#00aaff;
  --muted:#f6f8fb;
  --card:#ffffff;
  --ink:#222;
}
*{box-sizing:border-box}
body{margin:0;font-family:Montserrat,system-ui,-apple-system,sans-serif;background:var(--muted);color:var(--ink);line-height:1.6}
a{color:var(--accent);text-decoration:none}
header{background:var(--blue);color:#fff;display:flex;justify-content:space-between;align-items:center;padding:14px 36px;position:sticky;top:0;z-index:60}
.logo{font-weight:700;color:var(--accent);font-size:20px}
.logo span{color:#fff}
nav a{color:#fff;margin:0 12px;font-weight:600}
nav a.active{color:var(--accent)}

/* Hero / Slider */
.hero-slider{position:relative;height:72vh;min-height:320px;overflow:hidden}
.slides{position:absolute;width:100%;height:100%;background-size:cover;background-position:center;opacity:0;transition:opacity 1s ease-in-out}
.slides.show{opacity:1}
.overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(4,9,30,0.45),rgba(4,9,30,0.45))}
.slide-content{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);text-align:center;color:#fff;padding:20px;max-width:1000px}
.slide-content h1{font-size:40px;color:var(--accent);margin-bottom:10px;text-shadow:0 2px 12px rgba(0,0,0,0.45)}
.slide-content p{font-size:18px;margin-bottom:18px}

/* Buttons */
.btn{background:var(--accent);color:#fff;padding:12px 22px;border-radius:8px;font-weight:700;display:inline-block}
.btn:hover{background:#0077cc}

/* Sections */
.section{padding:60px 18px;text-align:center}
.section h2{color:var(--blue);margin-bottom:18px;font-size:28px}
.container{max-width:1100px;margin:0 auto}

/* Product Grid */
.product-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px;margin:30px auto}
.product-card{background:var(--card);padding:20px;border-radius:10px;box-shadow:0 6px 18px rgba(0,0,0,0.06);text-align:left}
.product-card h3{color:var(--accent);margin-bottom:8px}

/* Gallery */
.page-hero{background:linear-gradient(120deg,var(--blue),#1f3f7a);color:#fff;padding:36px 18px}
.badge-row{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:12px}
.badge{background:linear-gradient(90deg,var(--accent),#0585df);color:#fff;padding:8px 14px;border-radius:999px;font-weight:700}
.filters{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin:22px auto}
.filter-btn{background:var(--card);border:1px solid #e6eef9;color:var(--blue);padding:9px 14px;border-radius:999px;cursor:pointer}
.filter-btn.active,.filter-btn:hover{background:var(--accent);color:#fff;border-color:var(--accent)}
.gallery{max-width:1200px;margin:20px auto;display:grid;gap:14px;padding:0 18px;grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
.tile{position:relative;overflow:hidden;border-radius:12px;background:var(--card);box-shadow:0 6px 18px rgba(0,0,0,0.06);cursor:pointer}
.tile img{width:100%;height:220px;object-fit:cover;display:block;transition:transform .35s}
.tile:hover img{transform:scale(1.04)}
.tag{position:absolute;left:10px;top:10px;background:rgba(14,35,69,.85);color:#fff;padding:6px 8px;border-radius:6px}
.cap{position:absolute;left:0;right:0;bottom:0;background:linear-gradient(180deg,transparent,rgba(0,0,0,.65));color:#fff;padding:22px 12px 12px;font-size:14px}
.years-ribbon{position:absolute;right:10px;top:10px;background:linear-gradient(90deg,#ffb703,#ff6f3c);color:#fff;padding:6px 10px;border-radius:8px;font-weight:700;font-size:12px;box-shadow:0 6px 14px rgba(0,0,0,0.12)}

/* Testimonials & Certs */
.two-col{display:grid;grid-template-columns:1fr 360px;gap:22px;align-items:start;max-width:1180px;margin:0 auto}
.card{background:var(--card);padding:18px;border-radius:12px;box-shadow:0 6px 18px rgba(0,0,0,0.06);text-align:left}
.quote{margin-bottom:16px;padding:12px;border-left:4px solid var(--accent);background:linear-gradient(180deg,#fff,#f7fbff)}
.who{font-weight:700;color:var(--blue)}

/* Lightbox */
.lightbox{position:fixed;inset:0;background:rgba(0,0,0,.92);display:none;align-items:center;justify-content:center;z-index:1200}
.lightbox.open{display:flex}
.lightbox img{max-width:min(92vw,1400px);max-height:82vh;border-radius:10px;box-shadow:0 8px 40px rgba(0,0,0,.6)}
.lb-close{position:fixed;top:18px;right:18px;color:#fff;background:rgba(255,255,255,.06);width:44px;height:44px;border-radius:50%;display:grid;place-items:center;cursor:pointer;z-index:1201}

/* WhatsApp FAB (inline SVG used in HTML) */
.whatsapp-fab{position:fixed;right:18px;bottom:18px;background:#25d366;color:#fff;width:60px;height:60px;border-radius:50%;display:grid;place-items:center;font-size:22px;box-shadow:0 12px 30px rgba(37,211,102,0.16);z-index:2000;text-decoration:none}

/* Responsive tweaks */
@media (max-width:980px){.two-col{grid-template-columns:1fr}}
@media (max-width:760px){
  .slide-content h1{font-size:26px}
  .slide-content p{font-size:15px}
  .tile img{height:160px}
}