/* BCFA V4.1 — Premium UI & Motion System */
@view-transition{navigation:auto}
:root{
  --premium-ease:cubic-bezier(.22,1,.36,1);
  --premium-fast:180ms;
  --premium-med:420ms;
  --premium-slow:720ms;
  --glass:rgba(255,255,255,.82);
}
html{scroll-padding-top:108px}
body{background:linear-gradient(180deg,#fff 0%,#fbfdff 52%,#f7faff 100%)}
::selection{background:rgba(6,168,79,.20);color:var(--navy)}

/* Header / premium navigation */
.topbar{transition:min-height .32s var(--premium-ease),box-shadow .32s var(--premium-ease),background .32s ease,border-color .32s ease}
.topbar.is-scrolled{background:rgba(255,255,255,.88);border-color:rgba(7,17,92,.08);box-shadow:0 16px 44px rgba(7,17,92,.10)}
.topbar.is-scrolled .nav{min-height:76px}
.topbar.is-scrolled .brand img{width:96px}
.nav,.brand img{transition:.32s var(--premium-ease)}
.site-nav{position:relative;gap:8px}
.site-nav>a,.nav-dropdown-trigger{position:relative;border:0;background:transparent;color:var(--navy);font-weight:900;font-size:15px;padding:13px 12px;border-radius:14px;cursor:pointer;white-space:nowrap;transition:color .22s ease,background .22s ease,transform .22s var(--premium-ease)}
.site-nav>a:hover,.nav-dropdown-trigger:hover{background:#f3f8ff;color:var(--green);transform:translateY(-1px)}
.site-nav>a::after,.nav-dropdown-trigger::after{content:"";position:absolute;left:12px;right:12px;bottom:5px;height:3px;border-radius:99px;background:linear-gradient(90deg,var(--green),#2bd47a);transform:scaleX(0);transform-origin:left;transition:transform .28s var(--premium-ease)}
.site-nav>a:hover::after,.site-nav>a.active::after,.nav-dropdown.active>.nav-dropdown-trigger::after{transform:scaleX(1)}
.site-nav>a.active{color:var(--green);background:#effcf5}
.nav-dropdown{position:relative}
.nav-dropdown-trigger{display:flex;align-items:center;gap:6px}
.nav-dropdown-trigger span{font-size:18px;transition:transform .25s var(--premium-ease)}
.nav-dropdown.open .nav-dropdown-trigger span{transform:rotate(180deg)}
.nav-dropdown-menu{position:absolute;top:calc(100% + 14px);left:50%;width:370px;padding:10px;background:rgba(255,255,255,.96);border:1px solid rgba(7,17,92,.09);border-radius:24px;box-shadow:0 28px 80px rgba(7,17,92,.18);backdrop-filter:blur(20px);opacity:0;visibility:hidden;transform:translate(-50%,-8px) scale(.98);transform-origin:top;transition:opacity .22s ease,transform .28s var(--premium-ease),visibility .22s}
.nav-dropdown.open .nav-dropdown-menu,.nav-dropdown:focus-within .nav-dropdown-menu{opacity:1;visibility:visible;transform:translate(-50%,0) scale(1)}
.nav-dropdown-menu::before{content:"";position:absolute;top:-7px;left:50%;width:14px;height:14px;background:#fff;transform:translateX(-50%) rotate(45deg);border-left:1px solid rgba(7,17,92,.08);border-top:1px solid rgba(7,17,92,.08)}
.nav-dropdown-menu a{position:relative;z-index:1;display:grid;grid-template-columns:auto 1fr;gap:12px;align-items:center;padding:13px;border-radius:16px;color:var(--navy);transition:.22s var(--premium-ease)}
.nav-dropdown-menu a:hover,.nav-dropdown-menu a.active{background:linear-gradient(135deg,#f0fff7,#f1f6ff);transform:translateX(3px)}
.nav-menu-icon{width:42px;height:42px;border-radius:13px;background:#edf4ff;display:grid;place-items:center;font-size:20px}
.nav-dropdown-menu b{display:block;font-size:14px}.nav-dropdown-menu small{display:block;color:var(--muted);font-size:12px;margin-top:1px}
.nav-dropdown.active>.nav-dropdown-trigger{color:var(--green);background:#effcf5}

/* premium action buttons */
.btn,.cart-chip,.search-chip{position:relative;overflow:hidden;isolation:isolate;transition:transform .24s var(--premium-ease),box-shadow .24s ease,filter .24s ease}
.btn::before,.cart-chip::before,.search-chip::before{content:"";position:absolute;inset:-40% auto -40% -60%;width:38%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.48),transparent);transform:skewX(-20deg);transition:left .6s var(--premium-ease);z-index:-1}
.btn:hover::before,.cart-chip:hover::before,.search-chip:hover::before{left:125%}
.btn:hover,.cart-chip:hover,.search-chip:hover{transform:translateY(-3px);filter:saturate(1.05)}
.btn-primary:hover{box-shadow:0 18px 36px rgba(6,168,79,.34)}
.search-chip{width:46px;height:46px;padding:0;border:1px solid #dce6f5;border-radius:50%;background:#f7faff;color:var(--navy);display:grid;place-items:center;cursor:pointer;font-size:19px}
.ripple-dot{position:absolute;border-radius:50%;background:rgba(255,255,255,.42);pointer-events:none;transform:translate(-50%,-50%) scale(0);animation:bcfaRipple .55s ease-out forwards;z-index:3}@keyframes bcfaRipple{to{transform:translate(-50%,-50%) scale(5);opacity:0}}

/* Hero / section atmosphere */
.hero,.page-hero,.gallery-hero{isolation:isolate}
.hero::after,.page-hero::after,.gallery-hero::after{content:"";position:absolute;width:420px;height:420px;border-radius:50%;right:-160px;bottom:-230px;background:radial-gradient(circle,rgba(25,210,112,.22),transparent 68%);filter:blur(4px);z-index:0;pointer-events:none}
.hero-copy,.hero-card,.page-hero-grid>*,.gallery-hero-grid>*{position:relative;z-index:1}
.hero-card,.gallery-hero-card{transition:transform .28s var(--premium-ease),box-shadow .28s ease}
.hero-card:hover,.gallery-hero-card:hover{transform:translateY(-5px);box-shadow:0 34px 90px rgba(0,0,0,.28)}
.section{position:relative}
.section:nth-of-type(even):not(.slideshow-section):not(.premium-section){background:linear-gradient(180deg,rgba(244,248,255,.68),rgba(255,255,255,.65))}
/* V4.1 contrast protection: premium service section must remain dark on every browser */
.premium-section{
  background:
    radial-gradient(circle at 86% 12%,rgba(24,210,112,.22),transparent 30%),
    radial-gradient(circle at 8% 100%,rgba(42,111,255,.18),transparent 32%),
    linear-gradient(135deg,#050b45 0%,#08145f 48%,#0a2679 100%)!important;
  color:#fff!important;
  overflow:hidden;
}
.premium-section::before{content:"";position:absolute;inset:0;background:linear-gradient(115deg,rgba(255,255,255,.045),transparent 35%);pointer-events:none}
.premium-section>.container{position:relative;z-index:1}
.premium-section .premium-panel{background:rgba(255,255,255,.09)!important;border-color:rgba(255,255,255,.20)!important;box-shadow:0 26px 70px rgba(0,0,0,.12)!important;backdrop-filter:blur(10px)}
.premium-section .eyebrow{color:#59e498!important}
.premium-section h2,.premium-section .premium-panel h2{color:#fff!important;text-shadow:0 1px 0 rgba(0,0,0,.08)}
.premium-section .premium-panel p{color:#e4ebff!important}
.premium-section .check-list span{color:#fff!important;background:rgba(255,255,255,.11)!important;border:1px solid rgba(255,255,255,.08)}
.premium-section .premium-cards article{background:#fff!important;color:var(--navy)!important;border:1px solid rgba(255,255,255,.22)}
.premium-section .premium-cards strong{color:var(--navy)!important}
.premium-section .premium-cards small{color:#60708f!important}

.section-head h2{letter-spacing:-.045em;text-wrap:balance}
.section-head p{text-wrap:pretty}

/* reveal motion */
.motion-item{opacity:0;transform:translate3d(0,26px,0) scale(.985);filter:blur(3px);transition:opacity .7s var(--premium-ease),transform .75s var(--premium-ease),filter .7s ease;transition-delay:var(--motion-delay,0ms)}
.motion-item.is-visible{opacity:1;transform:none;filter:none}
.motion-left{transform:translate3d(-28px,0,0)}.motion-right{transform:translate3d(28px,0,0)}

/* product / content cards */
.product-card,.gallery-card,.contact-card,.doc-card,.pack-card,.delivery-card,.premium-panel,.premium-cards article,.category-grid>a,.large-card,.calculator-card,.table-card{transition:transform .3s var(--premium-ease),box-shadow .3s ease,border-color .3s ease}
.product-card:hover,.contact-card:hover,.doc-card:hover,.pack-card:hover,.delivery-card:hover,.category-grid>a:hover,.premium-cards article:hover{transform:translateY(-7px);box-shadow:0 26px 70px rgba(7,17,92,.15);border-color:rgba(6,168,79,.22)}
.product-media,.gallery-card-media{overflow:hidden}
.product-media img,.gallery-card-media img{transition:transform .65s var(--premium-ease),filter .45s ease}
.product-card:hover .product-media img,.gallery-card:hover .gallery-card-media img{transform:scale(1.035);filter:saturate(1.04)}
.product-badge,.gallery-badge{box-shadow:0 8px 22px rgba(6,168,79,.22)}
.category-grid>a span:first-child{transition:transform .35s var(--premium-ease)}.category-grid>a:hover span:first-child{transform:translateY(-5px) rotate(-3deg) scale(1.08)}

/* Banner slideshow */
.banner-slider{box-shadow:0 28px 80px rgba(7,17,92,.16);border:1px solid rgba(7,17,92,.08)}
.banner-slide{transition:opacity .85s ease,transform 1.1s var(--premium-ease)}
.banner-slide:not(.active){transform:scale(1.025)}
.banner-slide.active{transform:scale(1)}
.banner-slide img{transition:transform 6s ease}.banner-slide.active img{transform:scale(1.025)}
.banner-dots{backdrop-filter:blur(12px);background:rgba(7,17,92,.24);padding:7px 9px;border-radius:999px}
.banner-dots button{transition:width .3s var(--premium-ease),background .25s}.banner-dots button.active{width:26px}

/* Skeleton loaders */
.skeleton-card{border:1px solid var(--line);border-radius:24px;padding:16px;background:#fff;overflow:hidden;min-height:330px}
.skeleton-line,.skeleton-media{position:relative;overflow:hidden;background:#eef3fa;border-radius:12px}
.skeleton-media{height:180px;margin-bottom:16px}.skeleton-line{height:14px;margin:10px 0}.skeleton-line.short{width:58%}.skeleton-card::after,.skeleton-media::after,.skeleton-line::after{content:"";position:absolute;inset:0;transform:translateX(-100%);background:linear-gradient(90deg,transparent,rgba(255,255,255,.8),transparent);animation:skeletonSweep 1.3s infinite}@keyframes skeletonSweep{100%{transform:translateX(100%)}}

/* Cart premium drawer */
.cart-overlay{backdrop-filter:blur(5px);transition:opacity .25s ease}
.cart-drawer{border-radius:28px 0 0 28px;transition:transform .38s var(--premium-ease);box-shadow:-34px 0 100px rgba(2,8,35,.32)}
.cart-item{transition:.22s var(--premium-ease)}.cart-item:hover{transform:translateX(-3px);border-color:#d7e7ff;background:#fbfdff}
.cart-chip.cart-pulse{animation:cartPulse .5s var(--premium-ease)}@keyframes cartPulse{40%{transform:scale(1.14)}100%{transform:scale(1)}}

/* Premium lightbox */
.lightbox{backdrop-filter:blur(16px);animation:lightboxIn .28s ease both}@keyframes lightboxIn{from{opacity:0}to{opacity:1}}
.lightbox-inner{animation:lightboxCardIn .38s var(--premium-ease) both}@keyframes lightboxCardIn{from{opacity:0;transform:translateY(24px) scale(.96)}to{opacity:1;transform:none}}
.lightbox-inner img{transition:transform .38s var(--premium-ease);cursor:zoom-in}.lightbox.zoomed .lightbox-inner img{transform:scale(1.35);cursor:zoom-out}
.lightbox-nav{position:absolute;top:50%;transform:translateY(-50%);width:50px;height:50px;border:0;border-radius:50%;background:rgba(255,255,255,.95);color:var(--navy);font-size:28px;cursor:pointer;box-shadow:0 12px 34px rgba(0,0,0,.2);z-index:4;transition:.2s var(--premium-ease)}
.lightbox-nav:hover{transform:translateY(-50%) scale(1.08)}.lightbox-prev{left:18px}.lightbox-next{right:18px}

/* Search command palette */
.search-modal{position:fixed;inset:0;z-index:110;background:rgba(2,8,35,.55);backdrop-filter:blur(12px);display:grid;place-items:start center;padding:10vh 18px 30px;opacity:0;visibility:hidden;transition:.22s ease}
.search-modal.open{opacity:1;visibility:visible}
.search-panel{width:min(720px,100%);background:#fff;border-radius:30px;padding:16px;box-shadow:0 38px 120px rgba(0,0,0,.32);transform:translateY(-18px) scale(.98);transition:.3s var(--premium-ease)}
.search-modal.open .search-panel{transform:none}.search-top{display:grid;grid-template-columns:auto 1fr auto;gap:12px;align-items:center;padding:10px 10px 14px;border-bottom:1px solid var(--line)}
.search-top input{border:0;outline:0;font-size:20px;color:var(--navy);width:100%;background:transparent}.search-key{font-size:11px;color:var(--muted);background:#f4f7fc;border:1px solid var(--line);padding:5px 8px;border-radius:8px}
.search-results{padding:10px;display:grid;gap:6px;max-height:56vh;overflow:auto}.search-result{display:grid;grid-template-columns:auto 1fr auto;gap:12px;align-items:center;padding:13px;border-radius:16px;color:var(--navy);transition:.18s ease}.search-result:hover{background:#f3f8ff;transform:translateX(3px)}.search-result i{font-style:normal;width:40px;height:40px;border-radius:12px;background:#eef5ff;display:grid;place-items:center}.search-result b{display:block}.search-result small{color:var(--muted)}

/* Page transition */
.page-transition{position:fixed;inset:0;z-index:150;pointer-events:none;background:linear-gradient(135deg,#06115c,#0a1f78 58%,#06a84f);transform:translateY(100%);transition:transform .42s var(--premium-ease);display:grid;place-items:center}
.page-transition::after{content:"BCFA";font-weight:1000;font-size:clamp(3rem,11vw,8rem);letter-spacing:-.08em;color:rgba(255,255,255,.14)}
.page-transition.active{transform:translateY(0)}
body.page-leaving{overflow:hidden}

/* Back to top / reading progress */
.back-top{position:fixed;right:22px;bottom:24px;width:52px;height:52px;border:0;border-radius:50%;background:#fff;color:var(--navy);box-shadow:0 16px 40px rgba(7,17,92,.2);z-index:46;display:grid;place-items:center;cursor:pointer;opacity:0;visibility:hidden;transform:translateY(10px);transition:.25s var(--premium-ease)}
.back-top.visible{opacity:1;visibility:visible;transform:none}.back-top svg{position:absolute;inset:0;transform:rotate(-90deg)}.back-top circle{fill:none;stroke:#e8edf7;stroke-width:3}.back-top circle.progress{stroke:var(--green);stroke-linecap:round;transition:stroke-dashoffset .12s linear}.back-top span{font-size:20px;font-weight:1000}

/* FAQ / form micro polish */
details{transition:box-shadow .25s ease,border-color .25s ease}details[open]{border-color:rgba(6,168,79,.24);box-shadow:0 18px 48px rgba(7,17,92,.10)}
input,select,textarea{transition:border-color .2s ease,box-shadow .2s ease,background .2s ease}input:focus,select:focus,textarea:focus{outline:none;border-color:rgba(6,168,79,.65)!important;box-shadow:0 0 0 4px rgba(6,168,79,.10)!important;background:#fff}

/* Desktop floating actions cleaned */
.float-actions{transition:opacity .25s ease,transform .25s var(--premium-ease)}.float-actions:hover{transform:translateY(-3px)}

@media (min-width:901px){
  .nav-dropdown:hover .nav-dropdown-menu{opacity:1;visibility:visible;transform:translate(-50%,0) scale(1)}
  .nav-dropdown:hover .nav-dropdown-trigger span{transform:rotate(180deg)}
}
@media(max-width:1100px){
  .site-nav>a,.nav-dropdown-trigger{padding-inline:9px;font-size:14px}.nav-actions .btn{padding-inline:14px}.search-chip{width:42px;height:42px}.nav-dropdown-menu{left:auto;right:0;transform:translate(0,-8px)}.nav-dropdown.open .nav-dropdown-menu,.nav-dropdown:focus-within .nav-dropdown-menu{transform:translate(0,0)}.nav-dropdown-menu::before{left:auto;right:34px}
}
@media(max-width:900px){
  .site-nav{display:none}.site-nav.open{display:flex;max-height:calc(100dvh - 110px);overflow:auto;overscroll-behavior:contain;padding:12px}
  .site-nav>a,.nav-dropdown-trigger{width:100%;text-align:left;padding:13px 14px;font-size:16px}
  .site-nav>a::after,.nav-dropdown-trigger::after{display:none}
  .nav-dropdown{width:100%}.nav-dropdown-trigger{justify-content:space-between}
  .nav-dropdown-menu{position:static;width:100%;opacity:1;visibility:visible;transform:none!important;box-shadow:none;border:0;background:#f7faff;border-radius:18px;margin-top:6px;padding:6px;display:none}.nav-dropdown.open .nav-dropdown-menu{display:block}.nav-dropdown-menu::before{display:none}
  .menu-btn[aria-expanded="true"] span:nth-child(1){transform:translateY(8px) rotate(45deg)}.menu-btn[aria-expanded="true"] span:nth-child(2){opacity:0}.menu-btn[aria-expanded="true"] span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}.menu-btn span{transition:.25s var(--premium-ease)}
  .cart-drawer{border-radius:26px 26px 0 0;top:auto;bottom:0;height:min(88dvh,760px);width:100%;transform:translateY(105%)}.cart-drawer.open{transform:translateY(0)}
  .float-actions{display:none}.back-top{right:14px;bottom:92px;width:48px;height:48px}
  .lightbox-prev{left:8px}.lightbox-next{right:8px}.lightbox-nav{width:44px;height:44px}
}
@media(max-width:520px){
  .search-modal{padding-top:5vh}.search-panel{border-radius:24px}.search-top input{font-size:17px}.search-key{display:none}
  .gallery-grid{grid-template-columns:1fr 1fr}.page-transition::after{font-size:28vw}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
  .motion-item{opacity:1!important;transform:none!important;filter:none!important}.banner-slide.active img{transform:none!important}
}