/* ═══════════════════════════════════════════════════════
   VLUX SOLAR — PRODUCT PAGES SHARED CSS  v2.0
   Brand: #223D94 (Royal Blue) · #E0AC25 (Gold)

   HOW TO LINK:
   Individual product pages  → <link rel="stylesheet" href="product-shared.css">
   products-main.html        → <link rel="stylesheet" href="products/product-shared.css">
═══════════════════════════════════════════════════════ */

/* ── DESIGN TOKENS ── */
:root{
  --blue:        #223D94;
  --blue-deep:   #141f52;
  --blue-darker: #0c1435;
  --blue-mid:    #2d4db8;
  --blue-light:  #3a5fd4;
  --gold:        #E0AC25;
  --gold-bright: #f5c842;
  --gold-dim:    #b88a18;
  --gold-pale:   rgba(224,172,37,0.08);
  --white:       #ffffff;
  --off:         #f8f7f4;
  --cream:       #fdfcf8;
  --ink:         #0f1530;
  --slate:       #3d4e7a;
  --mist:        #8591b8;
  --border:      rgba(34,61,148,0.08);
  --shadow-sm:   0 2px 16px rgba(14,22,60,0.07);
  --shadow-md:   0 8px 40px rgba(14,22,60,0.12);
  --shadow-lg:   0 24px 80px rgba(14,22,60,0.18);
}

/* ── RESET ── */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'Outfit',system-ui,-apple-system,'Segoe UI',sans-serif;
  background:var(--cream);color:var(--ink);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%}
a{text-decoration:none;color:inherit}
button{font-family:inherit;cursor:pointer;border:none;outline:none}

/* ══════════════════════════════════════════
   PAGE HERO — SPLIT LAYOUT (text | image)
══════════════════════════════════════════ */
.page-hero{
  position:relative;
  overflow:hidden;
  min-height:520px;
  display:grid;
  grid-template-columns:1fr 1fr;
  background:linear-gradient(150deg,var(--blue-darker) 0%,var(--blue-deep) 50%,#1e2d6e 100%);
}

.ph-grid{
  position:absolute;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(224,172,37,0.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(224,172,37,0.03) 1px,transparent 1px);
  background-size:56px 56px;
}
.ph-glow{
  position:absolute;top:-120px;right:-80px;z-index:0;pointer-events:none;
  width:500px;height:500px;border-radius:50%;
  background:radial-gradient(circle,rgba(224,172,37,0.12) 0%,transparent 70%);
}

/* LEFT — text */
.ph-left{
  position:relative;z-index:2;
  padding:108px 56px 80px 72px;
  display:flex;flex-direction:column;justify-content:center;
}

.breadcrumb{
  display:flex;align-items:center;gap:8px;
  margin-bottom:24px;
  font-size:12px;font-weight:500;color:rgba(255,255,255,0.4);
}
.breadcrumb a{color:rgba(255,255,255,0.4);transition:color .2s}
.breadcrumb a:hover{color:var(--gold-bright)}
.breadcrumb-sep{font-size:10px;opacity:.4}
.breadcrumb-cur{color:var(--gold)}

.ph-tag{
  display:inline-flex;align-items:center;gap:8px;
  width:fit-content;
  background:rgba(224,172,37,0.1);border:1px solid rgba(224,172,37,0.25);
  color:var(--gold-bright);
  padding:6px 18px;border-radius:40px;
  font-size:10.5px;letter-spacing:2.5px;text-transform:uppercase;font-weight:600;
  margin-bottom:22px;
}

.ph-title{
  font-family:'Cormorant Garamond',Georgia,'Times New Roman',serif;
  font-size:clamp(40px,5vw,68px);font-weight:700;line-height:1.05;color:var(--white);
}
.ph-title em{
  font-style:italic;display:block;
  background:linear-gradient(135deg,var(--gold-bright),var(--gold));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}

.ph-sub{
  margin-top:18px;font-size:15.5px;line-height:1.85;
  color:rgba(255,255,255,0.6);max-width:520px;
}

.ph-actions{margin-top:32px;display:flex;gap:14px;flex-wrap:wrap}

.ph-stats{
  display:flex;gap:0;
  margin-top:36px;padding-top:28px;
  border-top:1px solid rgba(255,255,255,0.08);
}
.ph-stat{flex:1;padding-right:20px;margin-right:20px;border-right:1px solid rgba(255,255,255,0.08)}
.ph-stat:last-child{border-right:none;padding-right:0;margin-right:0}
.ph-stat-n{
  font-family:'Cormorant Garamond',Georgia,serif;
  font-size:34px;font-weight:700;line-height:1;
  background:linear-gradient(135deg,var(--gold-bright),var(--gold));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.ph-stat-l{font-size:10px;font-weight:600;letter-spacing:1.5px;text-transform:uppercase;color:rgba(255,255,255,0.38);margin-top:6px}

/* RIGHT — image card */
.ph-right{
  position:relative;z-index:1;
  display:flex;align-items:center;justify-content:center;
  padding:48px 56px 48px 24px;
}
.ph-img-card{
  position:relative;
  width:100%;max-width:520px;
  border-radius:24px;overflow:hidden;
  box-shadow:
    0 32px 80px rgba(8,14,40,0.55),
    0 0 0 1px rgba(224,172,37,0.18);
}
.ph-img-card img{
  width:100%;height:420px;
  object-fit:cover;object-position:center;
  display:block;
  /* filter:brightness(0.82) saturate(0.9); */
  transition:transform .7s cubic-bezier(.2,.8,.4,1),filter .5s;
}
.ph-img-card:hover img{transform:scale(1.04);filter:brightness(0.72) saturate(0.85)}
.ph-img-card::before{
  content:'';position:absolute;inset:0;z-index:1;
  border-radius:24px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.08);
  pointer-events:none;
}
.ph-img-label{
  position:absolute;bottom:18px;left:18px;z-index:2;
  display:flex;align-items:center;gap:8px;
  background:rgba(12,20,53,0.82);
  backdrop-filter:blur(12px);
  border:1px solid rgba(224,172,37,0.25);
  border-radius:10px;padding:9px 14px;
}
.ph-img-dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--gold);box-shadow:0 0 8px rgba(224,172,37,0.7);flex-shrink:0;
}
.ph-img-label span{
  font-size:10.5px;font-weight:600;letter-spacing:1.5px;
  text-transform:uppercase;color:rgba(255,255,255,0.75);
}

/* ── BUTTONS ── */
.btn-gold{
  display:inline-flex;align-items:center;gap:8px;
  background:linear-gradient(135deg,var(--gold-bright),var(--gold));
  color:var(--blue-darker);padding:14px 32px;border-radius:50px;
  font-size:13px;font-weight:700;letter-spacing:.6px;
  box-shadow:0 6px 24px rgba(224,172,37,0.35);transition:all .3s;
}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 12px 36px rgba(224,172,37,0.5)}
.btn-gold svg{width:15px;height:15px}

.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,0.07);color:var(--white);
  padding:14px 32px;border-radius:50px;
  font-size:13px;font-weight:600;letter-spacing:.6px;
  border:1px solid rgba(255,255,255,0.2);transition:all .3s;
}
.btn-ghost:hover{border-color:rgba(224,172,37,0.4);color:var(--gold-bright)}
.btn-ghost svg{width:15px;height:15px}

.btn-dark{
  display:flex;align-items:center;justify-content:center;gap:8px;
  background:var(--blue-darker);color:var(--white);
  padding:15px 30px;border-radius:12px;
  font-size:13px;font-weight:700;letter-spacing:.5px;
  transition:all .3s;box-shadow:0 6px 24px rgba(12,20,53,.2);
}
.btn-dark:hover{background:var(--blue-deep);transform:translateY(-2px);box-shadow:0 12px 36px rgba(12,20,53,.35)}

.btn-outline-dark{
  display:flex;align-items:center;justify-content:center;
  background:transparent;color:var(--blue-darker);
  padding:13px 30px;border-radius:12px;
  font-size:13px;font-weight:700;
  border:2px solid rgba(12,20,53,.2);transition:all .3s;
}
.btn-outline-dark:hover{border-color:rgba(12,20,53,.4);background:rgba(12,20,53,.06)}

/* ══════════════════════════════
   SECTION SYSTEM
══════════════════════════════ */
.sec{padding:96px 80px}
.sec-white{background:var(--white)}
.sec-off{background:var(--off)}
.sec-cream{background:var(--cream)}
.sec-dark{background:linear-gradient(150deg,var(--blue-darker),var(--blue-deep))}
.sec-blue{background:linear-gradient(135deg,var(--blue),var(--blue-mid))}

.eyebrow{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.el{width:36px;height:2px;background:linear-gradient(90deg,var(--gold),var(--gold-bright));border-radius:2px;flex-shrink:0}
.et{font-size:10.5px;font-weight:700;letter-spacing:3px;text-transform:uppercase;color:var(--gold)}
.et-light{color:var(--gold-bright)}

.s-title{
  font-family:'Cormorant Garamond',Georgia,serif;
  font-size:clamp(30px,3.8vw,50px);font-weight:700;line-height:1.1;color:var(--ink);
}
.s-title em{
  font-style:italic;
  background:linear-gradient(135deg,var(--blue),var(--blue-mid));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.s-title-w{color:var(--white)}
.s-title-w em{
  background:linear-gradient(135deg,var(--gold-bright),var(--gold));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.s-body{font-size:15.5px;line-height:1.9;color:var(--slate);margin-top:16px}
.s-body-w{color:rgba(255,255,255,0.55)}

/* ══════════════════════════════
   PRODUCT OVERVIEW (intro section)
══════════════════════════════ */
.product-intro{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}
.product-intro-img{border-radius:20px;overflow:hidden;height:440px;position:relative;box-shadow:var(--shadow-lg)}
.product-intro-img img{width:100%;height:100%;object-fit:cover;
    /* filter:brightness(.85) saturate(.9) */
}
.product-intro-img-badge{
  position:absolute;bottom:20px;right:20px;
  background:linear-gradient(135deg,var(--blue),var(--blue-mid));
  border:1px solid rgba(224,172,37,.3);border-radius:12px;
  padding:16px 20px;box-shadow:0 12px 36px rgba(14,22,60,.3);
}
.pib-num{
  font-family:'Cormorant Garamond',Georgia,serif;
  font-size:36px;font-weight:700;line-height:1;
  background:linear-gradient(135deg,var(--gold-bright),var(--gold));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.pib-txt{font-size:9.5px;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;color:rgba(255,255,255,.55);margin-top:4px}
.overview-text p{font-size:15.5px;line-height:1.9;color:var(--slate);margin-top:14px}
.overview-text p:first-child{margin-top:22px}
.ideal-box{
  background:linear-gradient(135deg,var(--gold-pale),rgba(224,172,37,.04));
  border:1px solid rgba(224,172,37,.2);
  border-radius:14px;padding:24px 26px;margin-top:28px;
}
.ideal-box-label{font-size:10px;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:var(--gold-dim);margin-bottom:8px}
.ideal-box p{font-size:14px;color:var(--slate);line-height:1.75}

/* ══════════════════════════════
   SPEC TABLE
══════════════════════════════ */
.spec-table{width:100%;border-collapse:collapse;margin-top:32px;border-radius:14px;overflow:hidden;box-shadow:var(--shadow-md)}
.spec-table thead th{
  background:var(--blue-darker);color:rgba(255,255,255,0.6);
  font-size:11px;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;
  padding:14px 20px;text-align:left;
}
.spec-table thead th:first-child{border-radius:14px 0 0 0}
.spec-table thead th:last-child{border-radius:0 14px 0 0}
.spec-table tbody tr{border-bottom:1px solid var(--border)}
.spec-table tbody tr:last-child{border-bottom:none}
.spec-table tbody tr:hover td{background:rgba(224,172,37,0.03)}
.spec-table tbody td{padding:14px 20px;font-size:13.5px;color:var(--slate);background:var(--white)}
.spec-table tbody td:first-child{font-weight:700;color:var(--ink)}
.spec-badge{
  display:inline-block;font-size:9.5px;font-weight:700;letter-spacing:1px;text-transform:uppercase;
  background:rgba(224,172,37,0.1);border:1px solid rgba(224,172,37,0.25);
  color:var(--gold-dim);padding:4px 10px;border-radius:40px;
}

/* ══════════════════════════════
   FEATURE CARDS (3-col)
══════════════════════════════ */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:48px}
.feat-card{
  background:var(--white);border-radius:18px;padding:32px 26px;
  border:1px solid var(--border);
  position:relative;overflow:hidden;
  transition:transform .35s,box-shadow .35s,border-color .35s;
}
.feat-card::after{
  content:'';position:absolute;bottom:-40px;right:-40px;
  width:120px;height:120px;border-radius:50%;
  background:radial-gradient(circle,rgba(224,172,37,0.1),transparent 70%);
  transition:transform .5s;
}
.feat-card:hover{transform:translateY(-6px);box-shadow:0 18px 52px rgba(34,61,148,0.1);border-color:rgba(224,172,37,0.25)}
.feat-card:hover::after{transform:scale(1.7)}
.feat-icon{
  width:50px;height:50px;border-radius:13px;
  background:linear-gradient(135deg,var(--blue),var(--blue-mid));
  display:flex;align-items:center;justify-content:center;
  margin-bottom:20px;box-shadow:0 6px 20px rgba(34,61,148,0.25);
  position:relative;z-index:1;
}
.feat-icon svg{width:23px;height:23px;color:var(--gold-bright)}
.feat-num{position:absolute;top:20px;right:24px;font-family:'Cormorant Garamond',Georgia,serif;font-size:60px;font-weight:700;color:rgba(34,61,148,0.05);line-height:1}
.feat-card h4{font-size:15.5px;font-weight:700;color:var(--ink);margin-bottom:8px;position:relative;z-index:1}
.feat-card p{font-size:13.5px;color:var(--slate);line-height:1.75;position:relative;z-index:1}

/* ══════════════════════════════
   APPLICATION CARDS (4-col)
══════════════════════════════ */
.app-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:48px}
.app-card{
  border-radius:18px;overflow:hidden;position:relative;
  height:260px;cursor:pointer;border:1px solid var(--border);
  transition:transform .35s,box-shadow .35s;
}
.app-card:hover{transform:translateY(-5px);box-shadow:0 20px 56px rgba(34,61,148,0.15)}
.app-card img{width:100%;height:100%;object-fit:cover;filter:brightness(.5) saturate(.8);transition:filter .5s,transform .7s}
.app-card:hover img{filter:brightness(.35);transform:scale(1.06)}
.app-layer{position:absolute;inset:0;
    /* background:linear-gradient(to top,rgba(12,20,53,.95) 0%,rgba(12,20,53,.2) 60%,transparent 100%) */
}
.app-content{position:absolute;bottom:0;left:0;right:0;padding:22px 20px;transition:transform .35s}
.app-card:hover .app-content{transform:translateY(-6px)}
.app-label{font-size:9.5px;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:var(--gold-bright);display:flex;align-items:center;gap:6px;margin-bottom:6px}
.app-dot{width:5px;height:5px;border-radius:50%;background:var(--gold);flex-shrink:0}
.app-content h4{font-family:'Cormorant Garamond',Georgia,serif;font-size:20px;font-weight:700;color:var(--white);line-height:1.25}

/* ══════════════════════════════
   PROCESS STEPS (dark section)
══════════════════════════════ */
.process-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative;margin-top:56px}
.process-steps::before{
  content:'';position:absolute;
  top:40px;left:calc(12.5% + 20px);right:calc(12.5% + 20px);
  height:1px;background:linear-gradient(90deg,var(--gold),var(--gold-bright),var(--gold));
  opacity:.25;z-index:0;
}
.ps-item{text-align:center;padding:0 20px;position:relative;z-index:1}
.ps-circle{width:80px;height:80px;border-radius:50%;margin:0 auto 20px;background:rgba(255,255,255,.04);border:1px solid rgba(224,172,37,.2);display:flex;align-items:center;justify-content:center;transition:border-color .3s,background .3s}
.ps-item:hover .ps-circle{background:rgba(224,172,37,.07);border-color:rgba(224,172,37,.45)}
.ps-inner{width:54px;height:54px;border-radius:50%;background:linear-gradient(135deg,var(--blue-light),var(--blue));display:flex;align-items:center;justify-content:center;box-shadow:0 6px 24px rgba(34,61,148,.4);transition:transform .3s;position:relative}
.ps-item:hover .ps-inner{transform:scale(1.08)}
.ps-inner svg{width:24px;height:24px;color:var(--gold-bright)}
.ps-badge{position:absolute;top:-3px;right:-3px;width:22px;height:22px;border-radius:50%;background:var(--gold);display:flex;align-items:center;justify-content:center;font-size:10px;font-weight:800;color:var(--blue-darker);border:2px solid var(--blue-deep)}
.ps-item h5{font-size:13.5px;font-weight:700;color:var(--white);margin-bottom:8px}
.ps-item p{font-size:12.5px;color:rgba(255,255,255,.45);line-height:1.65}

/* ══════════════════════════════
   RELATED PRODUCTS
══════════════════════════════ */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:48px}
.related-card{background:var(--white);border-radius:18px;overflow:hidden;border:1px solid var(--border);display:flex;flex-direction:column;transition:transform .35s,box-shadow .35s,border-color .35s}
.related-card:hover{transform:translateY(-5px);box-shadow:0 16px 44px rgba(34,61,148,0.1);border-color:rgba(224,172,37,0.2)}
.related-img{height:180px;overflow:hidden;position:relative}
.related-img img{width:100%;height:100%;object-fit:cover;
    /* filter:brightness(.75) saturate(.85);transition:transform .6s,filter .5s */
}
.related-card:hover .related-img img{transform:scale(1.05);filter:brightness(.6)}
.related-body{padding:22px;flex:1}
.related-tag{font-size:9.5px;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;color:var(--gold-dim);display:block;margin-bottom:8px}
.related-body h4{font-family:'Cormorant Garamond',Georgia,serif;font-size:19px;font-weight:700;color:var(--ink);margin-bottom:8px;line-height:1.25}
.related-body p{font-size:13px;color:var(--slate);line-height:1.65}
.related-footer{padding:14px 22px;border-top:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}
.arrow-link{display:flex;align-items:center;gap:6px;font-size:13px;font-weight:700;color:var(--blue);transition:gap .25s}
.arrow-link:hover{gap:12px}
.arrow-link svg{width:15px;height:15px}

/* ══════════════════════════════
   CTA BAND
══════════════════════════════ */
.cta-band{background:linear-gradient(135deg,var(--gold-bright),var(--gold));padding:72px 80px;display:grid;grid-template-columns:1fr auto;align-items:center;gap:48px;position:relative;overflow:hidden}
.cta-band::before{content:'';position:absolute;top:-80px;right:-80px;width:280px;height:280px;border-radius:50%;background:rgba(255,255,255,0.08)}
.cta-band-title{font-family:'Cormorant Garamond',Georgia,serif;font-size:clamp(24px,3.5vw,44px);font-weight:700;color:var(--blue-darker);line-height:1.15;position:relative;z-index:1}
.cta-band-sub{font-size:15px;color:rgba(12,20,53,0.6);margin-top:10px;position:relative;z-index:1}
.cta-band-btns{display:flex;flex-direction:column;gap:12px;min-width:200px;position:relative;z-index:1}
.cta-note{text-align:center;font-size:11px;color:rgba(12,20,53,.4);margin-top:4px}

/* ══════════════════════════════
   TABS
══════════════════════════════ */
.tabs-bar{display:flex;gap:4px;background:var(--off);border-radius:12px;padding:5px;margin-bottom:40px;flex-wrap:wrap}
.tab-btn{flex:1;min-width:120px;padding:12px 20px;border-radius:9px;font-size:13px;font-weight:600;color:var(--mist);transition:all .25s;cursor:pointer;text-align:center;background:transparent;border:none;font-family:inherit}
.tab-btn.active{background:var(--white);color:var(--blue);box-shadow:var(--shadow-sm)}
.tab-panel{display:none}
.tab-panel.active{display:block}

/* ══════════════════════════════
   SCROLL REVEAL
══════════════════════════════ */
.reveal{opacity:0;transform:translateY(36px);transition:opacity .8s cubic-bezier(.2,.8,.4,1),transform .8s cubic-bezier(.2,.8,.4,1)}
.reveal.in{opacity:1;transform:none}
.rl{opacity:0;transform:translateX(-36px);transition:opacity .8s cubic-bezier(.2,.8,.4,1),transform .8s cubic-bezier(.2,.8,.4,1)}
.rl.in{opacity:1;transform:none}
.rr{opacity:0;transform:translateX(36px);transition:opacity .8s cubic-bezier(.2,.8,.4,1),transform .8s cubic-bezier(.2,.8,.4,1)}
.rr.in{opacity:1;transform:none}
.d1{transition-delay:.08s}.d2{transition-delay:.16s}.d3{transition-delay:.24s}
.d4{transition-delay:.32s}.d5{transition-delay:.40s}.d6{transition-delay:.48s}




/* ══════════════════════════════════════════════
   RESPONSIVE — single clean block, no duplicates
══════════════════════════════════════════════ */

/* Tablet landscape / small desktop */
@media(max-width:1024px){
  .sec{padding:72px 40px}
  .ph-left{padding:100px 32px 64px 40px}
  .ph-right{padding:40px 32px 40px 12px}
  .ph-img-card img{height:340px}
  .feat-grid{grid-template-columns:1fr 1fr}
  .app-grid{grid-template-columns:1fr 1fr}
  .related-grid{grid-template-columns:1fr 1fr}
  .process-steps{grid-template-columns:1fr 1fr;gap:40px}
  .process-steps::before{display:none}
  .cta-band{grid-template-columns:1fr;padding:60px 40px}
  .cta-band-btns{flex-direction:row;flex-wrap:wrap}
  .product-intro{grid-template-columns:1fr;gap:48px}
  .product-intro-img{height:320px}
}

/* Mobile */
@media(max-width:767px){
  .sec{padding:56px 20px}
  .page-hero{grid-template-columns:1fr}
  .ph-left{padding:96px 20px 60px}
  .ph-right{display:none}
  .ph-stats{flex-direction:column;gap:0;padding-top:20px}
  .ph-stat{border-right:none;border-bottom:1px solid rgba(255,255,255,0.07);padding:12px 0;margin:0}
  .ph-stat:last-child{border-bottom:none}
  .feat-grid{grid-template-columns:1fr}
  .app-grid{grid-template-columns:1fr}
  .related-grid{grid-template-columns:1fr}
  .process-steps{grid-template-columns:1fr}
  .process-steps::before{display:none}
  .cta-band{padding:56px 20px;grid-template-columns:1fr}
  .cta-band-btns{flex-direction:column}
  .product-intro{grid-template-columns:1fr;gap:36px}
  .product-intro-img{height:260px}
  .tabs-bar{gap:6px}
  .tab-btn{min-width:auto;font-size:12px;padding:10px 14px}
}