/* ═══════════════════════════════════════════════════
   ALP — Product Page Stylesheet
   Visual layer refactored to ALP Brand Guide.
   Layout, structure and JS hooks are unchanged.
═══════════════════════════════════════════════════ */

/* ── Variables (ALP brand tokens) ── */
:root {
  --bg:       #090a0c;   /* ALP deep charcoal — never pure black */
  --panel:    #111317;
  --panel-2:  #181b20;
  --text:     #eceef1;
  --muted:    #8b909c;
  --line:     rgba(255,255,255,.07);
  --accent:   #c8111e;
  --accent-2: #e0202d;
  --shadow:   inset 0 1px 0 rgba(255,255,255,.05), 0 14px 40px rgba(0,0,0,.5);
  --r:        6px;   /* ALP corner radius M — machined, not rounded */
  --r-s:      4px;   /* ALP corner radius S */
  --r-xs:     2px;   /* ALP corner radius XS */
  --chamfer:  10px;  /* clipped corner size for chamfered elements */
}
html.light-mode {
  --bg:       #e9eaee;
  --panel:    #f5f6f8;
  --panel-2:  #e1e3e8;
  --text:     #0e1014;
  --muted:    #61656f;
  --line:     rgba(0,0,0,.08);
  --accent:   #b50f1a;
  --accent-2: #cf1722;
  --shadow:   inset 0 1px 0 rgba(255,255,255,.7), 0 10px 30px rgba(0,0,0,.10);
}

/* ── ALP triangular DNA pattern (structural texture, very low opacity) ── */
body::after {
  content:""; position:fixed; inset:0; pointer-events:none; z-index:0;
  background-image:
    repeating-linear-gradient(60deg,  transparent 0 34px, rgba(255,255,255,.025) 34px 35px),
    repeating-linear-gradient(-60deg, transparent 0 34px, rgba(255,255,255,.025) 34px 35px);
  background-size: 70px 70px;
  opacity:.5;
}
html.light-mode body::after {
  background-image:
    repeating-linear-gradient(60deg,  transparent 0 34px, rgba(0,0,0,.02) 34px 35px),
    repeating-linear-gradient(-60deg, transparent 0 34px, rgba(0,0,0,.02) 34px 35px);
}

/* ── ALP chamfer utility (cut corners instead of round) ── */
.chamfer {
  clip-path: polygon(
    var(--chamfer) 0, 100% 0,
    100% calc(100% - var(--chamfer)), calc(100% - var(--chamfer)) 100%,
    0 100%, 0 var(--chamfer)
  );
}

/* ── Fullscreen scroll lock ── */
html.has-fullscreen,
html.has-fullscreen body { overflow:hidden !important; }

/* ── Reset ── */
*,*::before,*::after { box-sizing:border-box; }
html,body {
  margin:0; padding:0; overflow-x:hidden;
  background:radial-gradient(circle at top,var(--panel-2) 0%,var(--bg) 55%);
  color:var(--text); font-family:"Vazirmatn",sans-serif;
  transition:background .3s,color .3s;
}
body::before {
  content:""; position:fixed; inset:0; pointer-events:none; z-index:0;
  background:
    linear-gradient(to bottom,rgba(255,255,255,.018),transparent 22%),
    radial-gradient(circle at 20% 10%,rgba(200,17,30,.055),transparent 28%);
}
a { text-decoration:none; color:inherit; }
button { font:inherit; }
.container { width:min(1200px,calc(100% - 32px)); margin:0 auto; position:relative; z-index:1; }

/* ── Header ── */
.site-header {
  position:sticky; top:0; z-index:50;
  backdrop-filter:blur(14px); background:rgba(7,7,7,.76);
  border-bottom:1px solid var(--line); transition:background .3s;
}
html.light-mode .site-header { background:rgba(255,255,255,.88); }
.header-inner { min-height:74px; display:flex; align-items:center; justify-content:space-between; gap:16px; }
.logo { font-size:1rem; font-weight:900; letter-spacing:.08em; }
.logo mark { color:var(--accent); background:transparent; }
.main-nav { display:flex; gap:24px; font-size:.95rem; color:var(--muted); }
.main-nav a:hover { color:var(--text); }
.header-actions { display:flex; gap:10px; align-items:center; }
.header-actions button { width:40px; height:40px; border:1px solid var(--line); background:rgba(255,255,255,.03); color:var(--text); border-radius:var(--r-s); cursor:pointer; }
.theme-toggle {
  position:relative; width:56px !important; height:28px !important;
  border-radius:var(--r-s) !important; overflow:hidden; padding:2px !important;
  display:flex; align-items:center; justify-content:space-between;
  background:#333; border:1px solid var(--line) !important; cursor:pointer; transition:background .3s;
}
.theme-toggle .icon-sun,.theme-toggle .icon-moon { font-size:13px; z-index:2; transition:opacity .3s; }
.theme-toggle .toggle-slider {
  position:absolute; top:2px; left:2px; width:24px; height:24px;
  border-radius:50%; background:#f1c40f; transition:transform .3s; box-shadow:0 1px 3px rgba(0,0,0,.3);
}
html.light-mode .theme-toggle { background:#ddd; }
html.light-mode .theme-toggle .toggle-slider { transform:translateX(28px); background:#3498db; }
.theme-toggle .icon-sun{opacity:1;}.theme-toggle .icon-moon{opacity:0;}
html.light-mode .theme-toggle .icon-sun{opacity:0;}
html.light-mode .theme-toggle .icon-moon{opacity:1;}

/* ── Breadcrumb ── */
.breadcrumb { padding:14px 0 0; font-size:.82rem; color:var(--muted); display:flex; gap:6px; align-items:center; flex-wrap:wrap; }
.breadcrumb span{opacity:.35;} .breadcrumb a:hover{color:var(--accent);}

/* ── Layout ── */
.page-shell { position:relative; z-index:1; padding:20px 0 48px; }
.hero-section { display:grid; grid-template-columns:1.15fr .85fr; gap:24px; align-items:start; margin-top:20px; }
.visual-hub { display:flex; flex-direction:column; }

/* ══════════════════════════════════════════════════
   ACTIVE VIEW  (3-D viewer)
══════════════════════════════════════════════════ */
#active-view {
  position:relative; overflow:hidden;
  border-radius:var(--r); background:transparent;
  width:100%; height:min(72vh,680px);
}
body:not(.light-mode) #active-view::before {
  content:""; position:absolute; inset:0; z-index:0;
  background:
    radial-gradient(circle at 20% 20%,rgba(255,255,255,.03) 0%,transparent 30%),
    repeating-linear-gradient(45deg,rgba(255,255,255,.012) 0px,rgba(255,255,255,.012) 1px,transparent 1px,transparent 8px),
    repeating-linear-gradient(-45deg,rgba(255,255,255,.012) 0px,rgba(255,255,255,.012) 1px,transparent 1px,transparent 8px),
    linear-gradient(135deg,#181818 0%,#080808 100%);
}
html.light-mode #active-view::before {
  content:""; position:absolute; inset:0; z-index:0;
  background:
    radial-gradient(circle at 20% 20%,rgba(0,0,0,.02) 0%,transparent 30%),
    repeating-linear-gradient(45deg,rgba(0,0,0,.025) 0px,rgba(0,0,0,.025) 1px,transparent 1px,transparent 8px),
    repeating-linear-gradient(-45deg,rgba(0,0,0,.025) 0px,rgba(0,0,0,.025) 1px,transparent 1px,transparent 8px),
    linear-gradient(135deg,#f7f7f7 0%,#ececec 100%);
}
#viewer-container,#active-snapshot { position:relative; z-index:1; width:100%; height:100%; }
#viewer-container canvas { display:block; width:100% !important; height:100% !important; }
#active-snapshot { display:none; object-fit:contain; }

/* ── Floating action buttons ── */
#btn-fullscreen,.close-overlay-btn {
  position:absolute; top:14px;
  width:40px; height:40px; border-radius:var(--r-s);
  border:1px solid rgba(255,255,255,.18);
  background:rgba(0,0,0,.55); color:#fff;
  cursor:pointer; z-index:12;
  display:flex; align-items:center; justify-content:center;
  font-size:1rem; transition:background .2s;
}
#btn-fullscreen:hover,.close-overlay-btn:hover { background:rgba(0,0,0,.82); }
#btn-fullscreen    { left:14px; }
.close-overlay-btn { right:14px; display:none; }
#btn-ar {
  position:absolute; top:64px; left:14px;
  width:40px; height:40px; border-radius:var(--r-s);
  border:1px solid rgba(255,255,255,.18);
  background:rgba(0,0,0,.55); color:#fff; font-size:1rem;
  cursor:pointer; z-index:12; display:none;
  align-items:center; justify-content:center; transition:background .2s,border-color .2s;
}
#btn-ar:hover { background:var(--accent); border-color:var(--accent); }

/* ── Prev / Next arrows ── */
.view-nav-btn {
  position:absolute; top:50%; transform:translateY(-50%);
  width:36px; height:52px; border-radius:var(--r-s);
  border:1px solid rgba(255,255,255,.14);
  background:rgba(0,0,0,.42); color:#fff; font-size:1.4rem;
  cursor:pointer; z-index:9;
  display:flex; align-items:center; justify-content:center;
  opacity:.7; transition:opacity .2s,background .2s;
}
.view-nav-btn:hover { opacity:1; background:rgba(0,0,0,.78); }
.view-nav-prev { left:10px; }
.view-nav-next { right:10px; }

/* ══════════════════════════════════════════════════
   THUMBNAIL SLIDER — desktop (inside viewer)
══════════════════════════════════════════════════ */
#active-view .thumb-slider {
  position:absolute; bottom:12px; left:10px; right:10px;
  display:flex; align-items:center; gap:6px; padding:6px 10px;
  background:rgba(0,0,0,.55); backdrop-filter:blur(12px); -webkit-backdrop-filter:blur(12px);
  border-radius:var(--r-s); z-index:10;   /* higher than color strip's z-index:9 */
  cursor:grab; user-select:none; -webkit-user-select:none; overflow:hidden;
}
#active-view .thumb-slider.active { cursor:grabbing; }
#active-view .thumb-nav {
  width:26px; height:26px; border:none; border-radius:var(--r-xs);
  background:rgba(255,255,255,.2); color:#fff; cursor:pointer; flex-shrink:0;
}
#active-view .thumb-track {
  display:flex; gap:8px; overflow-x:auto; overflow-y:hidden;
  flex:1; scroll-behavior:smooth; scrollbar-width:none;
}
#active-view .thumb-track::-webkit-scrollbar { display:none; }
#active-view .thumb {
  width:44px; height:44px; border-radius:var(--r-xs); flex-shrink:0;
  background:rgba(255,255,255,.15); cursor:pointer;
  display:grid; place-items:center; font-size:11px; color:#fff;
  transition:outline .15s,transform .15s;
}
#active-view .thumb:hover { transform:scale(1.08); }
#active-view .thumb img { width:100%; height:100%; object-fit:cover; border-radius:var(--r-xs); pointer-events:none; }
#active-view .thumb-360  { background:var(--accent); font-weight:700; }
#active-view .thumb.active { outline:2px solid #fff; }

/* ── Mobile detached thumbnail strip ── */
.thumb-slider.mobile-detached {
  position:relative !important; bottom:auto !important;
  left:auto !important; right:auto !important; top:auto !important;
  transform:none !important;
  display:flex !important; flex-direction:row !important; align-items:center;
  gap:8px; padding:10px 12px;
  background:var(--panel) !important; backdrop-filter:none !important;
  border-top:1px solid var(--line);
  border-radius:0 0 var(--r) var(--r);
  overflow-x:auto; -webkit-overflow-scrolling:touch;
  cursor:grab; z-index:auto !important;
}
.thumb-slider.mobile-detached.active { cursor:grabbing; }
.thumb-slider.mobile-detached .thumb-track {
  flex-direction:row !important; flex:1;
  display:flex; gap:8px; overflow-x:auto; scrollbar-width:none;
}
.thumb-slider.mobile-detached .thumb-track::-webkit-scrollbar { display:none; }
.thumb-slider.mobile-detached .thumb {
  width:50px; height:50px; background:var(--panel-2); color:var(--text); border:1px solid var(--line);
}
.thumb-slider.mobile-detached .thumb-360  { background:var(--accent); color:#fff; border-color:var(--accent); }
.thumb-slider.mobile-detached .thumb.active { outline:2px solid var(--accent); }
.thumb-slider.mobile-detached .thumb-nav {
  background:var(--panel-2); color:var(--text); border:1px solid var(--line);
  border-radius:var(--r-xs); flex-shrink:0; width:26px; height:26px; cursor:pointer;
}

/* ══════════════════════════════════════════════════
   MOBILE COLOR STRIP  —  overlay inside #active-view

   Default:  hidden (desktop normal mode)
   Shown via:
     1. @media ≤640px          → bottom overlay on mobile
     2. .visual-hub.fullscreen  → centered pill above thumb strip
══════════════════════════════════════════════════ */
.mobile-color-strip { display:none; }

/* Mobile: full-width glass overlay at bottom of viewer */
@media (max-width:640px) {
  #active-view .mobile-color-strip {
    display:flex;
    position:absolute; bottom:0; left:0; right:0; z-index:9;
    flex-direction:column; gap:0;
    background:rgba(5,5,8,.80);
    backdrop-filter:blur(14px); -webkit-backdrop-filter:blur(14px);
    border-top:1px solid rgba(255,255,255,.08);
    border-radius:0 0 var(--r) var(--r);
    padding:8px 14px 12px;
  }
}

/* Fullscreen (desktop + mobile): centered pill with auto-width */
.visual-hub.fullscreen #active-view .mobile-color-strip {
  display:flex !important;
  position:absolute;
  /* ── WIDTH FIX: auto-size to content, centered ── */
  left:50% !important;
  right:auto !important;
  transform:translateX(-50%) !important;
  width:fit-content !important;
  min-width:220px;
  /* ── Sit above the thumbnail strip ── */
  /* Thumb strip: bottom:12px, height≈58px → top at 70px from bottom */
  /* Color strip: positioned at bottom:80px so it clears the thumb strip */
  bottom:80px !important;
  top:auto;
  z-index:9;            /* thumb strip is z-index:10, so stays on top */
  flex-direction:column; gap:0;
  background:rgba(5,5,8,.85);
  backdrop-filter:blur(16px); -webkit-backdrop-filter:blur(16px);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r);
  padding:8px 16px 10px;
}

/* Color strip rows */
.mcs-row { display:flex; align-items:center; gap:10px; padding:5px 0; }
.mcs-row+.mcs-row { border-top:1px solid rgba(255,255,255,.07); }
.mcs-label { font-size:.72rem; font-weight:700; color:rgba(255,255,255,.55); width:26px; flex-shrink:0; text-align:center; }
.mcs-swatches { display:flex; gap:7px; flex-wrap:nowrap; }
.mcs-btn {
  width:24px; height:24px; border-radius:50%; flex-shrink:0;
  border:2px solid rgba(255,255,255,.22); cursor:pointer;
  transition:transform .15s,box-shadow .15s;
}
.mcs-btn[data-colorkey="MATTE_BLACK"]  { background:#111; }
.mcs-btn[data-colorkey="CHERRY_RED"]   { background:#c8111e; }
.mcs-btn[data-colorkey="WHITE"]        { background:#f0ede8; border-color:rgba(255,255,255,.5); }
.mcs-btn[data-colorkey="GLOSSY_BLACK"] { background:#000; }
.mcs-btn[data-colorkey="STEEL_GREY"]   { background:#8a9099; }
.mcs-btn[data-colorkey="PRO"]          { background:linear-gradient(135deg,#111 50%,var(--accent) 50%); }
.mcs-btn:hover { transform:scale(1.18); }
.mcs-btn.active {
  transform:scale(1.22);
  box-shadow:0 0 0 2px var(--accent),0 0 0 4px rgba(255,255,255,.12);
}

/* ══════════════════════════════════════════════════
   PRODUCT INFO PANEL
══════════════════════════════════════════════════ */
.product-info {
  background:var(--panel); border:1px solid var(--line);
  border-radius:var(--r); padding:26px; box-shadow:var(--shadow);
}
.product-series { color:var(--accent-2); font-size:.82rem; letter-spacing:.18em; font-weight:800; margin-bottom:8px; }
.product-title  { margin:0 0 14px; font-size:clamp(1.8rem,3.5vw,3rem); line-height:1.05; font-weight:900; }
.product-desc   { margin:0 0 16px; color:var(--muted); line-height:1.85; font-size:.98rem; }
.product-rating { display:flex; gap:10px; align-items:center; color:#ffd86b; margin-bottom:18px; }
.product-rating small { color:var(--muted); }
.price-row { display:flex; justify-content:space-between; align-items:flex-end; border-top:1px solid var(--line); border-bottom:1px solid var(--line); padding:16px 0; margin-bottom:16px; }
.price { font-size:1.9rem; font-weight:900; }
.stock { color:#4caf50; font-weight:700; font-size:.9rem; }
.color-label { color:var(--muted); font-weight:700; margin-bottom:8px; font-size:.88rem; }
.color-selectors { display:flex; gap:9px; margin-bottom:16px; flex-wrap:wrap; }
.color-btn {
  width:26px; height:26px; border-radius:50%;
  border:2px solid rgba(255,255,255,.22); cursor:pointer;
  transition:transform .15s,box-shadow .15s;
}
.color-btn:hover { transform:scale(1.15); }
.color-btn.active { box-shadow:0 0 0 2px var(--accent),0 0 0 4px rgba(255,255,255,.1); transform:scale(1.1); }
.color-btn[data-colorkey="MATTE_BLACK"]  { background:#111; }
.color-btn[data-colorkey="CHERRY_RED"]   { background:#c8111e; }
.color-btn[data-colorkey="WHITE"]        { background:#f0ede8; border-color:rgba(0,0,0,.15); }
.color-btn[data-colorkey="GLOSSY_BLACK"] { background:#000; }
.color-btn[data-colorkey="STEEL_GREY"]   { background:#8a9099; }
.color-btn[data-colorkey="PRO"]          { background:linear-gradient(135deg,#111 50%,var(--accent) 50%); }
.cta-buttons { display:flex; gap:10px; flex-wrap:wrap; margin-bottom:14px; }
.btn-primary,.btn-secondary { min-height:48px; padding:0 20px; border-radius:var(--r-s); border:1px solid transparent; cursor:pointer; font-weight:800; transition:opacity .2s,transform .15s; }
.btn-primary  { background:var(--accent); border-color:var(--accent); color:#fff; }
.btn-primary:hover { opacity:.88; transform:translateY(-1px); }
.btn-secondary { background:transparent; border-color:var(--line); color:var(--text); }
.btn-secondary:hover { background:var(--panel-2); }

/* ── Trust grid ── */
.trust-section { margin-top:28px; }
.trust-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:12px; }
.trust-card { background:var(--panel); border:1px solid var(--line); border-radius:var(--r); padding:16px 12px; display:flex; flex-direction:column; align-items:center; text-align:center; gap:6px; }
.trust-icon  { font-size:1.7rem; }
.trust-title { font-weight:800; font-size:.88rem; }
.trust-desc  { color:var(--muted); font-size:.78rem; line-height:1.5; }

/* ── Features ── */
.features-grid { margin-top:28px; display:grid; grid-template-columns:repeat(4,1fr); gap:14px; }
.feature-card { background:var(--panel); border:1px solid var(--line); border-radius:var(--r); padding:18px; }
.feature-card h3 { margin:0 0 6px; font-size:.95rem; }
.feature-card p  { color:var(--muted); margin:0; font-size:.88rem; line-height:1.6; }

/* ── Specs ── */
.specs-section { margin-top:28px; }
.specs-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:14px; margin-bottom:14px; }
.spec-item { background:var(--panel); border:1px solid var(--line); border-radius:var(--r); padding:18px; display:flex; flex-direction:column; }
.spec-item span { color:var(--muted); font-size:.8rem; }
.spec-item strong { color:var(--text); margin-top:4px; font-size:1.05rem; }
.specs-extra { max-height:0; overflow:hidden; transition:max-height .55s ease; margin-bottom:14px; }
.specs-extra.open { max-height:900px; }
.specs-extra .spec-item { opacity:0; }
.specs-extra.open .spec-item { animation:popIn .4s ease forwards; }
.specs-extra.open .spec-item:nth-child(1){animation-delay:.05s}
.specs-extra.open .spec-item:nth-child(2){animation-delay:.10s}
.specs-extra.open .spec-item:nth-child(3){animation-delay:.15s}
.specs-extra.open .spec-item:nth-child(4){animation-delay:.20s}
.specs-extra.open .spec-item:nth-child(5){animation-delay:.25s}
.specs-extra.open .spec-item:nth-child(6){animation-delay:.30s}
.specs-extra.open .spec-item:nth-child(7){animation-delay:.35s}
.specs-extra.open .spec-item:nth-child(8){animation-delay:.40s}
@keyframes popIn{0%{opacity:0;transform:scale(.75) translateY(16px)}100%{opacity:1;transform:scale(1) translateY(0)}}
.btn-expand { background:transparent; border:1px solid var(--line); color:var(--text); padding:10px 20px; border-radius:var(--r-s); cursor:pointer; display:inline-flex; align-items:center; gap:8px; font-weight:700; transition:background .2s; }
.btn-expand:hover { background:var(--panel); }
.btn-expand .arrow { font-size:.78rem; }

/* ── Review ── */
.review-section { margin-top:24px; }
.review-content { max-height:0; overflow:hidden; transition:max-height .5s ease,padding .5s ease; background:var(--panel); border-radius:var(--r); border:1px solid var(--line); padding:0 22px; }
.review-content.open { max-height:900px; padding:22px; margin-top:14px; }
.review-content h2 { margin-top:0; }
.review-content p  { color:var(--muted); line-height:1.8; }

/* ── FAQ ── */
.faq-section { margin-top:44px; }
.faq-section h2 { font-size:1.45rem; margin-bottom:18px; }
.faq-list { display:flex; flex-direction:column; gap:8px; }
.faq-item { background:var(--panel); border:1px solid var(--line); border-radius:var(--r); overflow:hidden; }
.faq-question { width:100%; background:transparent; border:none; color:var(--text); padding:16px 20px; display:flex; justify-content:space-between; align-items:center; font-weight:700; cursor:pointer; font-size:.93rem; text-align:right; gap:12px; transition:background .2s; }
.faq-question:hover { background:var(--panel-2); }
.faq-arrow { font-size:.78rem; color:var(--muted); flex-shrink:0; }
.faq-answer { max-height:0; overflow:hidden; transition:max-height .35s ease; color:var(--muted); line-height:1.8; font-size:.9rem; padding:0 20px; }
.faq-item.open .faq-answer { padding:0 20px 16px; }

/* ── Testimonials ── */
.testimonials-section { margin-top:44px; }
.testimonials-section h2 { font-size:1.45rem; margin-bottom:10px; }
.rating-summary { display:flex; align-items:center; gap:14px; margin-bottom:22px; }
.rating-big    { font-size:2.8rem; font-weight:900; color:var(--accent); line-height:1; }
.rating-stars  { color:#ffd86b; font-size:1.1rem; }
.rating-count  { color:var(--muted); font-size:.85rem; }
.testimonials-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:14px; }
.testimonial-card { background:var(--panel); border:1px solid var(--line); border-radius:var(--r); padding:20px; }
.testimonial-header { display:flex; gap:12px; align-items:center; margin-bottom:10px; }
.testimonial-avatar { width:42px; height:42px; border-radius:var(--r-xs); background:var(--accent); display:flex; align-items:center; justify-content:center; font-weight:900; font-size:1rem; color:#fff; flex-shrink:0; }
.testimonial-name { font-weight:700; font-size:.93rem; }
.testimonial-date { font-size:.78rem; color:var(--muted); }
.testimonial-stars { color:#ffd86b; font-size:.85rem; margin-bottom:7px; }
.testimonial-text  { color:var(--muted); font-size:.9rem; line-height:1.75; margin:0; }
.testimonial-badge { display:inline-block; margin-top:10px; font-size:.74rem; padding:3px 10px; border-radius:var(--r-xs); background:rgba(76,175,80,.1); color:#4caf50; border:1px solid rgba(76,175,80,.2); }

/* ── Related carousel ── */
.related-products { margin-top:44px; }
.related-products h2 { font-size:1.45rem; margin-bottom:18px; border-bottom:1px solid var(--line); padding-bottom:8px; }
.related-loop-wrapper { overflow:hidden; direction:ltr; }
.related-loop-track { display:flex; gap:18px; width:max-content; will-change:transform; direction:ltr; cursor:grab; }
.related-loop-track:active { cursor:grabbing; }
.related-item { width:240px; flex-shrink:0; background:var(--panel); border:1px solid var(--line); border-radius:var(--r); padding:16px; text-align:center; transition:border-color .2s,transform .2s; }
.related-item:hover { border-color:var(--accent); transform:translateY(-3px); }
.related-thumb { width:100%; height:140px; background:var(--panel-2); border-radius:var(--r-xs); margin-bottom:10px; }
.related-name  { font-weight:700; font-size:.88rem; margin-bottom:3px; }
.related-price { color:var(--accent); font-weight:800; }
.carousel-controls { display:flex; justify-content:center; gap:14px; margin-top:14px; }
.carousel-btn { background:rgba(255,255,255,.05); border:1px solid var(--line); color:var(--text); width:36px; height:36px; border-radius:var(--r-s); cursor:pointer; font-size:1.2rem; display:grid; place-items:center; transition:background .2s; }
.carousel-btn:hover { background:var(--panel); }

/* ── Newsletter ── */
.newsletter-section { margin-top:56px; background:var(--panel); border-top:1px solid var(--line); border-bottom:1px solid var(--line); padding:44px 0; }
.newsletter-inner { display:flex; gap:28px; align-items:center; flex-wrap:wrap; }
.newsletter-text { flex:1; min-width:220px; }
.newsletter-text h2 { margin:0 0 6px; font-size:1.4rem; }
.newsletter-text p  { margin:0; color:var(--muted); }
.newsletter-form { display:flex; gap:10px; flex:1; min-width:250px; }
.newsletter-form input { flex:1; padding:13px 16px; border-radius:var(--r-s); border:1px solid var(--line); background:var(--panel-2); color:var(--text); font:inherit; font-size:.93rem; outline:none; transition:border-color .2s; }
.newsletter-form input:focus { border-color:var(--accent); }
.newsletter-form button { padding:13px 22px; border-radius:var(--r-s); border:none; background:var(--accent); color:#fff; font:inherit; font-weight:800; cursor:pointer; white-space:nowrap; transition:opacity .2s; }
.newsletter-form button:hover { opacity:.85; }

/* ── Footer ── */
.site-footer { padding:44px 0 28px; border-top:1px solid var(--line); }
.footer-grid { display:grid; grid-template-columns:1.4fr repeat(3,1fr); gap:28px; margin-bottom:36px; }
.footer-brand .logo { font-size:1.05rem; display:block; margin-bottom:10px; }
.footer-brand p { color:var(--muted); font-size:.84rem; line-height:1.7; margin:0 0 14px; }
.footer-social { display:flex; gap:8px; }
.footer-social a { width:34px; height:34px; border-radius:var(--r-s); border:1px solid var(--line); background:var(--panel); display:flex; align-items:center; justify-content:center; font-size:.9rem; transition:border-color .2s; }
.footer-social a:hover { border-color:var(--accent); }
.footer-col h4 { font-size:.84rem; font-weight:800; letter-spacing:.06em; color:var(--muted); margin:0 0 12px; }
.footer-col ul { list-style:none; padding:0; margin:0; display:flex; flex-direction:column; gap:9px; }
.footer-col ul li a { color:var(--muted); font-size:.88rem; transition:color .2s; }
.footer-col ul li a:hover { color:var(--text); }
.footer-bottom { display:flex; justify-content:space-between; align-items:center; padding-top:20px; border-top:1px solid var(--line); color:var(--muted); font-size:.8rem; flex-wrap:wrap; gap:10px; }
.footer-badges { display:flex; gap:10px; flex-wrap:wrap; }
.footer-badge { padding:4px 10px; border-radius:var(--r-xs); border:1px solid var(--line); background:var(--panel); font-size:.76rem; color:var(--muted); }

/* ══════════════════════════════════════════════════
   FULLSCREEN OVERLAY
   ─────────────────────────────────────────────────
   JS moves #visual-hub to <body> before adding this
   class (Portal pattern), so position:fixed always
   works relative to viewport in any RTL/grid context.
══════════════════════════════════════════════════ */
.visual-hub.fullscreen {
  /* Guaranteed full viewport coverage */
  position:fixed !important;
  top:0 !important; right:0 !important; bottom:0 !important; left:0 !important;
  width:100vw !important; height:100vh !important;
  max-width:none !important; max-height:none !important;
  margin:0 !important;

  background:var(--bg); z-index:9999;
  display:flex !important; flex-direction:column;
  align-items:center; justify-content:center;
  padding:20px;
}
.visual-hub.fullscreen #active-view {
  width:min(95vw,1440px);
  height:min(82vh,900px);
  border-radius:var(--r); overflow:hidden; flex-shrink:0;
}
.visual-hub.fullscreen .close-overlay-btn { display:flex; }
.visual-hub.fullscreen #btn-fullscreen    { display:none; }

/* ══════════════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════════════ */
@media (max-width:980px) {
  .hero-section    { grid-template-columns:1fr; }
  .features-grid   { grid-template-columns:repeat(2,1fr); }
  .specs-grid      { grid-template-columns:repeat(2,1fr); }
  .trust-grid      { grid-template-columns:repeat(2,1fr); }
  .testimonials-grid { grid-template-columns:1fr; }
  .footer-grid     { grid-template-columns:repeat(2,1fr); }
  .main-nav        { display:none; }
  .related-item    { width:210px; }
}

@media (max-width:640px) {
  /* Stack layout */
  .hero-section { display:flex; flex-direction:column; }
  .visual-hub   { order:1; }
  .product-info { order:2; border-radius:var(--r); padding:16px; }

  /* Viewer: leaves room for color overlay at bottom */
  #active-view { height:52vh; max-height:430px; border-radius:var(--r) var(--r) 0 0; width:100%; }

  /* Nav arrows: smaller on mobile */
  .view-nav-btn { width:30px; height:42px; font-size:1.1rem; opacity:.55; }

  /* Layout tweaks */
  .price-row   { flex-direction:column; align-items:flex-start; }
  .cta-buttons { flex-direction:column; }
  .btn-primary,.btn-secondary { width:100%; }
  .features-grid { grid-template-columns:1fr; margin-top:20px; }
  .specs-grid    { grid-template-columns:1fr; }
  .trust-grid    { grid-template-columns:repeat(2,1fr); }
  .testimonials-grid { grid-template-columns:1fr; }
  .footer-grid   { grid-template-columns:1fr; }
  .related-item  { width:175px; }
  .carousel-controls { display:none; }
  .newsletter-inner { flex-direction:column; }
  .newsletter-form  { flex-direction:column; }
  .footer-bottom { flex-direction:column; align-items:flex-start; }

  /* Mobile fullscreen: same centered format, bigger viewer */
  .visual-hub.fullscreen {
    padding:0; align-items:stretch; justify-content:flex-start;
  }
  .visual-hub.fullscreen #active-view {
    flex:1; height:0 !important;    /* flex determines height */
    width:100% !important; max-width:100% !important;
    border-radius:0 !important;
  }
  /* Color strip in mobile fullscreen: full-width at bottom of viewer */
  .visual-hub.fullscreen #active-view .mobile-color-strip {
    bottom:0 !important;
    left:0 !important; right:0 !important; width:100% !important;
    transform:none !important;
    border-radius:0 !important;
    border-top:1px solid rgba(255,255,255,.1) !important;
    min-width:0 !important;
  }
  /* Thumb strip in mobile fullscreen: dark bar below viewer */
  .visual-hub.fullscreen .thumb-slider.mobile-detached {
    flex-shrink:0; position:relative !important;
    bottom:auto !important; left:auto !important; right:auto !important;
    border-radius:0 !important; border-top:1px solid rgba(255,255,255,.08) !important;
    background:rgba(7,7,9,.96) !important; backdrop-filter:none !important;
    height:70px; align-items:center;
  }
}