/* BN AUTO ID - custom overrides on Braintech theme */
:root{--bn-orange:#ff5421;--bn-ink:#bf3409;--bn-dark:#0a1c3d;}
body{font-family:"Segoe UI","Sarabun","Prompt",system-ui,-apple-system,sans-serif;}
img{max-width:100%;height:auto;}

/* Header / navbar */
.bn-topbar{background:var(--bn-dark);color:#cfd8e8;font-size:14px;}
.bn-topbar a{color:#cfd8e8;text-decoration:none;}
.bn-topbar a:hover{color:#fff;}
.bn-topbar .sep{opacity:.4;margin:0 10px;}
.navbar.bn-nav{background:#fff;box-shadow:0 2px 18px rgba(10,28,61,.08);}
.navbar.bn-nav.is-stuck{position:sticky;top:0;z-index:1030;}
.bn-nav .navbar-brand img{height:46px;width:auto;}
.bn-nav .navbar-toggler{border:2px solid var(--bn-orange);padding:.35rem .6rem;}
.bn-nav .navbar-toggler:focus{box-shadow:0 0 0 .2rem rgba(255,84,33,.3);}
.bn-nav .navbar-toggler-icon{background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%23ff5421' stroke-width='2.5' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");}
.bn-nav .nav-link{color:var(--bn-dark);font-weight:600;padding:1.4rem .95rem;text-transform:uppercase;font-size:14px;letter-spacing:.3px;transition:color .2s,padding .3s ease;}
.bn-nav .nav-link:hover,.bn-nav .nav-link.active{color:var(--bn-orange);}
.bn-nav .dropdown-menu{border:0;box-shadow:0 12px 40px rgba(10,28,61,.14);border-top:3px solid var(--bn-orange);border-radius:0;padding:.4rem 0;}
.bn-nav .dropdown-item{font-weight:600;color:var(--bn-dark);padding:.55rem 1.3rem;}
.bn-nav .dropdown-item:hover{background:#fff4f0;color:var(--bn-orange);}
.bn-lang a{font-weight:700;color:var(--bn-dark);text-decoration:none;padding:0 6px;}
.bn-lang a.active{color:var(--bn-orange);}
.bn-cta-btn{background:#d2380c;color:#fff!important;border-radius:6px;padding:.7rem 1.4rem!important;}
.bn-cta-btn:hover{background:#b22f08;}

/* Hero — gradient drift animation */
.bn-hero{background:linear-gradient(120deg,#0a1c3d,#13315c,#1c4a8a,#0f2650,#0a1c3d);background-size:300% 300%;animation:gradDrift 12s ease infinite;color:#fff;padding:120px 0;position:relative;overflow:hidden;}
.bn-hero h1{font-size:clamp(2rem,4vw,3.4rem);font-weight:800;line-height:1.15;}
.bn-hero .lead{color:#c7d4e8;font-size:1.15rem;max-width:620px;}
.bn-hero .badge-pill{background:rgba(255,84,33,.18);color:#ff8a5c;border:1px solid rgba(255,84,33,.4);padding:.5rem 1rem;border-radius:50px;font-weight:600;display:inline-block;margin-bottom:18px;}
.bn-pillars .pillar{background:#fff;border-radius:12px;padding:38px 28px;height:100%;box-shadow:0 8px 30px rgba(10,28,61,.07);transition:.25s;border:1px solid #eef1f6;}
.bn-pillars .pillar:hover{transform:translateY(-6px);box-shadow:0 16px 44px rgba(10,28,61,.14);}
.bn-pillars .pillar i,.bn-pillars .pillar .bn-i{font-size:42px;width:42px;height:42px;color:var(--bn-orange);}
.bn-pillars .pillar h3{margin:18px 0 12px;font-weight:700;font-size:1.35rem;}

/* Sections */
.bn-section{padding:90px 0;}
.bn-section.alt{background:#f6f8fb;}
.bn-sec-head{max-width:720px;margin:0 auto 50px;text-align:center;}
.bn-sec-head .sub{color:var(--bn-ink);font-weight:700;text-transform:uppercase;letter-spacing:2px;font-size:14px;}
.bn-sec-head h2{font-weight:800;color:var(--bn-dark);font-size:clamp(1.7rem,3vw,2.5rem);margin-top:8px;position:relative;}
.bn-card{background:#fff;border:1px solid #eef1f6;border-radius:10px;overflow:hidden;height:100%;transition:.25s;}
.bn-card:hover{box-shadow:0 14px 40px rgba(10,28,61,.12);transform:translateY(-4px);}
.bn-card.tilt-js:hover{transform:none;}
.bn-card .bn-card-img{background:#f6f8fb;display:flex;align-items:center;justify-content:center;height:190px;padding:18px;}
.bn-card .bn-card-img img{max-height:160px;width:auto;object-fit:contain;mix-blend-mode:multiply;}
.bn-card .bn-card-body{padding:20px;}
.bn-card h3{font-size:1.05rem;font-weight:700;color:var(--bn-dark);margin-bottom:10px;}
.bn-card .spec{font-size:.9rem;color:#5b6b82;white-space:pre-line;margin-bottom:14px;}
.bn-cat-card{display:block;text-decoration:none;color:inherit;background:#fff;border:1px solid #eef1f6;border-radius:12px;padding:34px 26px;height:100%;transition:.25s;}
.bn-cat-card:hover{box-shadow:0 16px 44px rgba(10,28,61,.13);transform:translateY(-5px);border-color:#ffd9cc;}
.bn-cat-card.tilt-js:hover{transform:none;}
.bn-cat-card i,.bn-cat-card .bn-i{font-size:40px;width:40px;height:40px;color:var(--bn-orange);}
.bn-cat-card h3{margin:16px 0 8px;font-weight:700;font-size:1.2rem;color:var(--bn-dark);}
.bn-cat-card p{color:#5b6b82;font-size:.92rem;margin:0;}
.bn-feature-list{list-style:none;padding:0;margin:0;}
.bn-feature-list li{padding:9px 0 9px 34px;position:relative;color:#3a4a63;border-bottom:1px dashed #e3e8f0;}
.bn-feature-list li:before{content:"";position:absolute;left:0;top:11px;width:18px;height:18px;background:no-repeat center/contain url("data:image/svg+xml;utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23ff5421'%3E%3Cpath d='M16 8A8 8 0 1 1 0 8a8 8 0 0 1 16 0zm-3.97-3.03a.75.75 0 0 0-1.08.022L7.477 9.417 5.384 7.323a.75.75 0 0 0-1.06 1.06L6.97 11.03a.75.75 0 0 0 1.079-.02l3.992-4.99a.75.75 0 0 0-.01-1.05z'/%3E%3C/svg%3E");}
.bn-i{width:1em;height:1em;vertical-align:-0.15em;fill:currentColor;display:inline-block;flex-shrink:0;}
.bn-i-wrap{display:inline-flex;align-items:center;justify-content:center;}
.bn-i-wrap .bn-i{width:1em;height:1em;}
.btn-bn{background:#d2380c;border:0;color:#fff;font-weight:700;padding:.8rem 1.8rem;border-radius:6px;display:inline-block;text-decoration:none;transition:.2s;position:relative;overflow:hidden;vertical-align:middle;}
.btn-bn:hover{background:#b22f08;color:#fff;}
.btn-bn-outline{background:transparent;border:2px solid #fff;color:#fff;font-weight:700;padding:.7rem 1.7rem;border-radius:6px;display:inline-block;text-decoration:none;vertical-align:middle;}
.btn-bn-outline:hover{background:#fff;color:var(--bn-dark);}

/* Breadcrumb hero */
.bn-breadcrumb{background:linear-gradient(120deg,#0a1c3d,#1c4a8a);color:#fff;padding:80px 0;text-align:center;}
.bn-breadcrumb h1{font-weight:800;font-size:clamp(1.8rem,3.4vw,2.7rem);}
.bn-breadcrumb .crumbs{color:#bcd; margin-top:10px;font-size:.95rem;}
.bn-breadcrumb .crumbs a{color:#ff8a5c;text-decoration:none;}

/* Brand filter */
.bn-brand-nav{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:40px;}
.bn-brand-nav a{background:#fff;border:1px solid #e3e8f0;border-radius:50px;padding:.5rem 1.3rem;font-weight:700;color:var(--bn-dark);text-decoration:none;font-size:.9rem;}
.bn-brand-nav a:hover{background:var(--bn-orange);color:#fff;border-color:var(--bn-orange);}
.bn-brand-title{font-weight:800;color:var(--bn-dark);border-left:5px solid var(--bn-orange);padding-left:14px;margin:50px 0 26px;}

/* Counter */
.bn-counter{background:var(--bn-dark);color:#fff;padding:70px 0;}
.bn-counter .num{font-size:2.6rem;font-weight:800;color:var(--bn-orange);}
.bn-counter .lbl{color:#c7d4e8;margin-top:6px;}

/* Contact */
.bn-contact-card{background:#fff;border:1px solid #eef1f6;border-radius:12px;padding:34px;height:100%;text-align:center;}
.bn-contact-card i,.bn-contact-card .bn-i{font-size:34px;width:34px;height:34px;color:var(--bn-orange);}
.bn-contact-card h3{font-weight:700;margin:16px 0 8px;color:var(--bn-dark);font-size:1.15rem;}
.bn-contact-card a{color:var(--bn-orange);text-decoration:none;font-weight:600;}
.bn-map{position:relative;background:#eef1f6;border:1px solid #e3e8f0;border-radius:12px;min-height:420px;display:flex;flex-direction:column;}
.bn-map iframe{width:100%;height:420px;border:0;border-radius:12px 12px 0 0;background:#eef1f6;}
.bn-map-link{display:inline-block;text-align:center;padding:14px;font-weight:700;color:var(--bn-ink);text-decoration:none;}
.bn-map-link:hover{color:#fff;background:var(--bn-orange);border-radius:0 0 12px 12px;}

/* Footer */
.bn-footer{background:var(--bn-dark);color:#9fb0ca;padding:70px 0 0;}
.bn-footer h4{color:#fff;font-weight:700;font-size:1.1rem;margin-bottom:22px;}
.bn-footer a{color:#9fb0ca;text-decoration:none;}
.bn-footer a:hover{color:var(--bn-orange);}
.bn-footer ul{list-style:none;padding:0;}
.bn-footer ul li{margin-bottom:11px;}
.bn-footer .fbottom{border-top:1px solid rgba(255,255,255,.1);margin-top:50px;padding:22px 0;font-size:.88rem;}
.bn-prose p{color:#475569;line-height:1.9;}
.bn-prose h2{font-weight:800;color:var(--bn-dark);margin:36px 0 16px;font-size:1.6rem;}
.bn-prose h3{font-weight:700;color:var(--bn-dark);margin:26px 0 12px;font-size:1.25rem;}
@media(max-width:991px){.bn-nav .nav-link{padding:.6rem 0;}.bn-hero{padding:80px 0;}.bn-section{padding:60px 0;}}

/* ===== ANIMATIONS ===== */

/* B: Hero gradient drift */
@keyframes gradDrift{0%{background-position:0% 50%}50%{background-position:100% 50%}100%{background-position:0% 50%}}

/* D: Navbar shrink on scroll */
.bn-nav{transition:box-shadow .3s ease;}
.bn-nav.bn-scrolled{box-shadow:0 4px 28px rgba(10,28,61,.22);}
.bn-nav.bn-scrolled .navbar-brand img{height:36px;transition:height .3s ease;}
.bn-nav.bn-scrolled .nav-link{padding-top:.8rem;padding-bottom:.8rem;}

/* A: Scroll fade-up (JS adds .anim-ready, IntersectionObserver adds .anim-done) */
@media(prefers-reduced-motion:no-preference){
  .anim-ready{opacity:0;transform:translateY(28px);transition:opacity .55s ease,transform .55s ease;}
  .anim-ready.anim-done{opacity:1;transform:none;}
  .anim-ready:nth-child(2){transition-delay:.08s;}
  .anim-ready:nth-child(3){transition-delay:.16s;}
  .anim-ready:nth-child(4){transition-delay:.24s;}
}

/* F: Heading underline sweep */
.bn-sec-head h2::after{content:'';position:absolute;bottom:-8px;left:50%;width:56px;height:3px;background:var(--bn-orange);border-radius:2px;transform:translateX(-50%) scaleX(0);transform-origin:center;transition:transform .5s ease .15s;}
.bn-sec-head h2.bn-h2-in::after{transform:translateX(-50%) scaleX(1);}

/* G: Button ripple */
.btn-bn .bn-ripple{position:absolute;border-radius:50%;background:rgba(255,255,255,.32);pointer-events:none;transform:scale(0);animation:bnRipple .55s linear forwards;}
@keyframes bnRipple{to{transform:scale(4);opacity:0;}}

/* H: Card tilt — perspective on col wrappers */
.row>[class*="col-"]{perspective:900px;}

/* Three.js hero canvas */
.bn-hero{isolation:isolate;}
.bn-hero-canvas{position:absolute;inset:0;z-index:0;pointer-events:none;opacity:0;transition:opacity 1s ease;}
.bn-hero-canvas.ready{opacity:1;}
.bn-hero>.container{position:relative;z-index:2;}

/* Three.js breadcrumb canvas */
.bn-breadcrumb{position:relative;isolation:isolate;}
.bn-bc-canvas{position:absolute;inset:0;z-index:0;pointer-events:none;opacity:0;transition:opacity 1s ease;}
.bn-bc-canvas.ready{opacity:1;}
.bn-breadcrumb>.container{position:relative;z-index:2;}

/* Three.js counter canvas */
.bn-counter{position:relative;isolation:isolate;}
.bn-counter-canvas{position:absolute;inset:0;z-index:0;pointer-events:none;opacity:0;transition:opacity 1s ease;}
.bn-counter-canvas.ready{opacity:1;}
.bn-counter>.container{position:relative;z-index:2;}

/* Three.js alt-section icosahedra canvas */
.bn-section.alt{position:relative;isolation:isolate;}
.bn-alt-canvas{position:absolute;inset:0;z-index:0;pointer-events:none;opacity:0;transition:opacity 1s ease;}
.bn-alt-canvas.ready{opacity:1;}
.bn-section.alt>.container{position:relative;z-index:2;}

/* Three.js footer orbital rings canvas */
.bn-footer{position:relative;isolation:isolate;}
.bn-footer-canvas{position:absolute;inset:0;z-index:0;pointer-events:none;opacity:0;transition:opacity 1s ease;}
.bn-footer-canvas.ready{opacity:1;}
.bn-footer>.container,.bn-footer>.fbottom{position:relative;z-index:2;}

/* Three.js non-alt section canvas (torus knot + morphing blob) */
.bn-section:not(.alt){position:relative;isolation:isolate;}
.bn-section:not(.alt)>.container{position:relative;z-index:2;}
.bn-knot-canvas,.bn-blob-canvas,.bn-vortex-canvas{position:absolute;inset:0;z-index:0;pointer-events:none;opacity:0;transition:opacity 1s ease;}
.bn-knot-canvas.ready,.bn-blob-canvas.ready,.bn-vortex-canvas.ready{opacity:1;}
/* ESL product showcase */
.bn-esl-img{border-radius:12px;overflow:hidden;background:#f0f4fa;}
.bn-esl-img img{width:100%;height:auto;display:block;}
.bn-esl-img-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.bn-spec-tag{display:inline-block;background:#eef1f6;border-radius:6px;padding:6px 14px;font-size:.8rem;font-weight:700;color:var(--bn-dark);margin:4px 4px 4px 0;}
.bn-spec-tag.orange{background:rgba(255,84,33,.12);color:var(--bn-orange);}
.bn-spec-tag.blue{background:rgba(28,74,138,.1);color:var(--bn-blue);}