/* ===== v3: signature + scroll-driven sections ===== */
.signature{position:relative;padding:clamp(80px,10vw,140px) 0;background:radial-gradient(70% 60% at 80% 30%,#3c231b,#1a100c 55%,#110a07);color:#f3e6dc;overflow:hidden}
.signature:before{content:'';position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='90' height='90'%3E%3Cpath d='M45 0L90 45L45 90L0 45Z' fill='none' stroke='%23ecd39e' stroke-opacity='.05'/%3E%3C/svg%3E");opacity:.9}
.sig-grid{position:relative;display:grid;grid-template-columns:.9fr 1.1fr;gap:70px;align-items:center}
.sig-copy{position:relative}
.sig-copy .eyebrow{color:#ecd39e}
.sig-copy h2{font-size:clamp(2.6rem,5vw,4.6rem);margin-bottom:6px}
.sig-copy h2 em{background:var(--gold-grad);-webkit-background-clip:text;background-clip:text;background-size:200%}
.sig-lead{color:#cdb9ab;max-width:440px;margin-bottom:28px;font-size:1.05rem}
.sig-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:30px;max-width:460px}
.sig-stats div{padding:16px 10px;border:1px solid rgba(236,211,158,.22);border-radius:16px;text-align:center;background:rgba(255,255,255,.03)}
.sig-stats b{display:block;font-family:var(--serif);font-size:1.8rem;color:#ecd39e;font-weight:500;line-height:1.1}
.sig-stats span{font-size:.72rem;color:#b9a397;letter-spacing:.06em}
.sig-seal{position:absolute;right:-10px;top:-70px;width:150px;height:150px;display:grid;place-items:center;opacity:.9}
.sig-seal svg{position:absolute;inset:0;animation:spin 26s linear infinite}
.sig-seal text{font-family:var(--caps);font-size:10px;letter-spacing:3px;fill:#ecd39e}
.sig-seal span{color:#ecd39e;font-size:1.4rem}
.sig-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:start}
.sig-card{position:relative;display:block;border-radius:200px 200px 22px 22px;overflow:hidden;background:#24160f;border:1px solid rgba(236,211,158,.25);transition:transform .7s var(--ease),box-shadow .7s,opacity 1s var(--ease) var(--d,0ms);box-shadow:0 40px 70px -40px rgba(0,0,0,.9)}
.sig-card.s1{margin-top:70px}.sig-card.s2{margin-top:140px}
.sig-card:hover{transform:translateY(-12px);box-shadow:0 50px 90px -40px rgba(201,162,94,.45)}
.sig-img{display:block;aspect-ratio:3/4.2;overflow:hidden}
.sig-img img{width:100%;height:100%;object-fit:cover;transition:transform 1.4s var(--ease)}
.sig-card:hover img{transform:scale(1.08)}
.sig-info{display:block;padding:18px 16px 20px;text-align:center}
.sig-info small{font-family:var(--caps);font-size:.6rem;letter-spacing:.24em;color:#ecd39e}
.sig-info b{display:block;font-family:var(--serif);font-weight:500;font-size:1.3rem;margin:4px 0;color:#fff;line-height:1.15}
.sig-info em{font-style:normal;color:#e6cfa0;font-weight:500}

/* pinned coverflow */
.cf-pin{position:relative;height:calc(100vh + var(--cfn,9) * 38vh)}
.cf-sticky{position:sticky;top:0;height:100vh;display:flex;flex-direction:column;justify-content:center;padding:70px 0 20px;overflow:hidden}
.cf-sticky .sec-head{margin-bottom:22px}
.cf-sticky .coverflow{height:min(480px,52vh);width:100%;margin-top:0}
.cf-sticky .cf-card{width:min(320px,58vw,36vh);margin-left:calc(min(320px,58vw,36vh)/-2)}
.cf-sticky .cf-nav{margin-top:22px}
.cf-dots{display:flex;justify-content:center;gap:8px;margin-top:16px}
.cf-dots i{width:6px;height:6px;border-radius:50%;background:rgba(140,85,57,.25);transition:.4s}
.cf-dots i.on{width:26px;border-radius:4px;background:var(--rose-d)}

/* pinned horizontal arch track */
.arch-pin{position:relative;height:300vh}
.arch-sticky{position:sticky;top:0;height:100vh;overflow:hidden;display:flex;flex-direction:column;justify-content:center;padding:70px 0 30px}
.arch-sticky .arch-head{margin-bottom:30px}
.arch-track{display:flex;gap:28px;padding:0 max(20px,calc((100vw - 1320px)/2));will-change:transform;width:max-content}
.arch-track .arch-card{flex:none;width:min(290px,66vw);height:min(430px,48vh)}
.arch-track .arch-card:nth-child(even){margin-top:34px}
.arch-num{display:block;font-family:var(--caps);letter-spacing:.3em;margin-bottom:6px;opacity:.8}
.arch-progress{width:min(560px,calc(100% - 40px));margin:30px auto 0}
.arch-progress i{display:block;height:2px;background:rgba(110,35,32,.15);border-radius:2px;position:relative;overflow:hidden}
.arch-progress b{position:absolute;left:0;top:0;bottom:0;width:0;background:linear-gradient(90deg,var(--gold),#6e2320)}

/* product description without image */
.pd-desc{grid-template-columns:1fr!important;max-width:900px;margin:0 auto;text-align:center}
.pd-desc .gold-rule{margin:18px auto}
.pd-desc .tagchips{justify-content:center}
.pd-desc-img{display:none!important}

@media (max-width:900px){
  .sig-grid{grid-template-columns:1fr;gap:50px}
  .sig-cards{grid-template-columns:repeat(3,minmax(210px,1fr));overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:10px;scrollbar-width:none}
  .sig-cards>*{scroll-snap-align:start}
  .sig-card.s1,.sig-card.s2{margin-top:0}
  .sig-seal{top:-90px;right:0;width:110px;height:110px}
  .cf-pin{height:calc(100vh + var(--cfn,9) * 30vh)}
  .arch-sticky .arch-head{flex-direction:column;align-items:flex-start;margin-bottom:20px}
  .arch-note{display:none}
}
@media (min-width:901px){.arch-sticky{padding-top:120px}.arch-track .arch-card{height:min(430px,44vh)}.cf-sticky{padding-top:110px}}
@media (max-width:900px){.arch-sticky,.cf-sticky{padding-top:80px}}

/* ===== v4 tweaks ===== */
/* darker, clearer header navigation */
.main-nav li>a{color:var(--ink);font-weight:600;font-size:.74rem}
.main-nav li>a:hover{color:var(--rose-d)}
.nav-rate{color:var(--rose-d)!important}
.mega-col a{color:var(--ink)}

/* compact size selector */
.size-select{width:100%;max-width:320px;padding:12px 14px}

/* buy buttons: Add to Cart = rose gold, Buy Now = black */
.buy-row .btn-dark,.sticky-buy .btn-dark{background:#161010;color:#fff;border:1px solid #161010}
.buy-row .btn-dark:hover,.sticky-buy .btn-dark:hover{background:#2e2220;transform:translateY(-2px)}

/* Shop by Finish: true circles */
.arch-track{align-items:center}
.arch-track .arch-card{width:min(300px,64vw,40vh)!important;height:auto!important;aspect-ratio:1/1;border-radius:50%!important}
.arch-track .arch-card:nth-child(even){margin-top:60px}
.arch-track .arch-card:before{inset:10px;border-radius:50%}
.arch-track .arch-card:after{background:linear-gradient(0deg,var(--tint) 12%,transparent 62%)}
.arch-track .arch-txt{bottom:16%}
.arch-track .arch-txt b{font-size:1.7rem}
.arch-track .arch-txt i{width:34px;height:34px;margin-top:10px}
.arch-track .arch-num{margin-bottom:2px}
.buy-row .btn-gold,.sticky-buy .btn-gold{background:linear-gradient(120deg,#7a4630,#a8694b 55%,#8c5539);color:#fff}
.buy-row .btn-gold:hover,.sticky-buy .btn-gold:hover{background:linear-gradient(120deg,#6a3b27,#98593d 55%,#7a4630)}

/* ===== v5 ===== */
/* Shop by Finish: dark overlay for legible text, no progress line */
.arch-track .arch-card:after{background:linear-gradient(0deg,rgba(14,8,6,.86) 0%,rgba(14,8,6,.55) 32%,rgba(14,8,6,.12) 62%,transparent 80%),linear-gradient(0deg,var(--tint) 0%,transparent 55%)!important;opacity:1!important}
.arch-track .arch-txt{text-shadow:0 2px 14px rgba(0,0,0,.6)}
.arch-track .arch-txt small{opacity:1;color:#f1e3d6}
.arch-progress{display:none!important}

/* Siya Presents slider arrows */
.slide-arrow{position:absolute;top:50%;z-index:4;width:54px;height:54px;margin-top:-27px;border-radius:50%;border:1px solid rgba(255,255,255,.55);background:rgba(20,12,9,.28);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);color:#fff;font-size:1.15rem;display:grid;place-items:center;transition:background .3s,transform .3s}
.slide-arrow:hover{background:rgba(255,255,255,.9);color:var(--ink);transform:scale(1.06)}
.slide-arrow.prev{left:24px}.slide-arrow.next{right:24px}

/* Bridal section: light theme, jewellery-only images */
.bridal.light{background:linear-gradient(135deg,#fbf3ec,#f3e2d6);color:var(--ink)}
.bridal.light .bridal-copy{background:radial-gradient(80% 70% at 20% 20%,#fff9f4,transparent 70%)}
.bridal.light .eyebrow{color:var(--rose)}
.bridal.light h2{color:var(--ink)}
.bridal.light h2 em{background:var(--grad);-webkit-background-clip:text;background-clip:text;background-size:200%}
.bridal.light .bridal-copy p{color:var(--ink2)}
.bridal.light .bridal-media{margin:clamp(20px,3vw,44px);border-radius:28px;overflow:hidden;box-shadow:var(--shadow)}
.bridal.light .bridal-thumbs img{border-color:var(--line);width:92px;height:92px;border-radius:50%;object-fit:cover;box-shadow:0 10px 24px -14px rgba(90,50,30,.6)}
.bridal-thumbs{flex-wrap:wrap}
.bridal-btns{display:flex;gap:12px;flex-wrap:wrap}

/* Buy Now: white with primary text & border */
.btn-outline{background:#fff;color:var(--rose-d);border:1.5px solid var(--rose-d)}
.btn-outline:hover{background:var(--rose-d);color:#fff;transform:translateY(-2px)}

/* sticky buy bar on mobile + tablet, single row */
@media (max-width:1024px){
  .sticky-buy{display:grid;grid-template-columns:auto 1fr 1fr;gap:10px;align-items:center;position:fixed;left:0;right:0;bottom:0;z-index:55;background:rgba(255,255,255,.97);backdrop-filter:blur(10px);padding:10px 14px calc(10px + env(safe-area-inset-bottom));box-shadow:0 -10px 30px -10px rgba(0,0,0,.2);transform:translateY(110%);transition:transform .45s var(--ease)}
  .sticky-buy.show{transform:none}
  .sticky-buy .btn{padding:14px 8px;font-size:.66rem;letter-spacing:.14em}
  .sticky-buy b{font-family:var(--serif);font-size:1.25rem;white-space:nowrap}
  .pdp-page .wa-float{bottom:90px}
}
@media (max-width:600px){
  .buy-row{grid-template-columns:1fr 1fr!important;gap:10px}
  .buy-row .btn{padding:15px 8px;font-size:.66rem;letter-spacing:.14em}
  .sticky-buy{grid-template-columns:1fr 1fr;gap:8px}
  .sticky-buy b{display:none}
}

/* ===== mobile responsiveness pass ===== */
@media (max-width:900px){
  .arch-sticky{padding-top:84px;padding-bottom:20px;justify-content:flex-start}
  .arch-sticky .arch-head{margin-bottom:18px}
  .arch-sticky .caps-title{font-size:2rem}
  .arch-sticky .gold-rule{margin:10px 0}
  .arch-all{font-size:.66rem}.arch-all span{width:38px;height:38px}
  .arch-track{gap:16px}
  .arch-track .arch-card{width:min(210px,52vw,30vh)!important}
  .arch-track .arch-card:nth-child(even){margin-top:30px}
  .arch-track .arch-txt b{font-size:1.25rem}
  .arch-track .arch-txt small{font-size:.54rem;letter-spacing:.18em}
  .arch-track .arch-txt i{width:28px;height:28px;margin-top:6px;font-size:.8rem}
  .cf-sticky .sec-head h2{font-size:2.1rem}
  .cf-sticky .coverflow{height:min(400px,46vh)}
  .slide-arrow{width:40px;height:40px;margin-top:-20px;top:50%;bottom:auto}
  .slide-arrow.prev{left:10px}.slide-arrow.next{right:10px}
  .slide-copy{padding:0 58px}
  .bridal.light .bridal-media{height:52vh;margin:16px 16px 0}
  .bridal-copy{padding:36px 20px 50px}
  .bridal.light .bridal-thumbs img{width:68px;height:68px}
  .sig-copy h2{font-size:2.5rem}
  .hdr-row{grid-template-columns:auto 1fr auto}
  .brand{justify-self:center}
  .rail{grid-auto-columns:46%}
  .pd-high{grid-template-columns:1fr 1fr}
  .list-bar select{max-width:100%}
  .cart-grid,.pdp{gap:24px}
}
@media (max-width:600px){
  .rail{grid-auto-columns:64%}
  .hdr-right .icon-btn{width:36px;height:36px}
  .brand-sub{display:none}
  .brand img{width:38px;height:38px}
  .lux-word{font-size:clamp(2.6rem,13vw,4rem)}
  .lux-cta .btn{width:100%}
  .sig-stats b{font-size:1.4rem}
  .coll-txt b{font-size:1.4rem}
  .budget b{font-size:2rem}
  .budget{padding:26px 14px}
  .store-actions .btn{flex:1}
  .promise b{font-size:1.2rem}
  .pricing-grid{gap:30px}
  .calc-card{padding:22px}
  .trust-grid div{grid-template-columns:36px 1fr}
  .foot-bottom{flex-direction:column}
  .spec-card{padding:20px}
  .gallery-strip .gs-track img{width:130px;height:170px}
  .page-title{padding:30px 0 18px}
  .ck-box,.summary{padding:18px}
  .auth-form{padding:30px 18px}
}

/* ===== v6: home product grids on mobile/tablet, taller slider ===== */
@media (max-width:1024px){
  .rail{display:grid;grid-auto-flow:row;grid-auto-columns:auto;grid-template-columns:repeat(3,1fr);gap:18px;overflow:visible;scroll-snap-type:none;padding:0}
  .rail>*{scroll-snap-align:none}
  .rail>*:nth-child(n+7){display:none}
}
@media (max-width:600px){
  .rail{grid-template-columns:1fr 1fr;gap:14px}
}
@media (max-width:900px){
  .campaign{height:min(82svh,640px);min-height:520px}
  .slide-copy h2{font-size:clamp(2.1rem,9vw,2.8rem)}
  .slide-copy p{font-size:.95rem}
  .slide-dots{bottom:22px}
}