/* ============================================================================
   IMPERIUM — PAGE LAYOUTS
   Intro, hero, homepage sections, PLP, PDP, cart/checkout, editorial, map.
   ========================================================================== */

/* --- Intro sequence ------------------------------------------------------- */
.intro {
  position: fixed; inset: 0; z-index: var(--z-intro); background: #000;
  display: grid; place-items: center; transition: opacity 900ms var(--e-out), visibility 900ms;
}
.intro.done { opacity: 0; visibility: hidden; pointer-events: none; }
.intro canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.intro-fallback {
  position: relative; z-index: 2; text-align: center; pointer-events: none; opacity: 0;
}
.intro-fallback img { width: min(56vw, 380px); height: auto; margin-inline: auto; }
.intro.reduced .intro-fallback { opacity: 1; animation: introFade 1.4s var(--e-out) forwards; }
@keyframes introFade { 0%{opacity:0} 30%{opacity:1} 80%{opacity:1} 100%{opacity:1} }
.intro-skip {
  position: absolute; bottom: var(--s-6); right: var(--gutter); z-index: 3; pointer-events: auto;
  font-size: var(--fs-xs); letter-spacing: var(--ls-nav); text-transform: uppercase; color: var(--imp-muted);
  border: 1px solid var(--imp-line); border-radius: var(--r-pill); padding: 0.6rem 1.2rem;
  transition: color var(--t-fast), border-color var(--t-fast);
}
.intro-skip:hover { color: var(--imp-ivory); border-color: var(--imp-gold); }

/* --- Hero ----------------------------------------------------------------- */
.hero {
  position: relative; min-height: 100svh; display: flex; align-items: stretch;
  overflow: hidden;
}
.hero-canvas { position: absolute; inset: 0; z-index: 0; }
.hero-canvas canvas { width: 100% !important; height: 100% !important; }
/* Static fallback shown when WebGL is unavailable or reduced-motion is on */
.hero-fallback {
  position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(60% 70% at 68% 45%, rgba(184,146,90,0.22), transparent 60%),
    radial-gradient(40% 50% at 70% 55%, rgba(231,211,179,0.10), transparent 60%),
    var(--imp-black);
}
.hero-fallback::after {
  content: ""; position: absolute; right: 8%; top: 50%; transform: translateY(-50%);
  width: min(40vw, 420px); aspect-ratio: 3/4; border-radius: 200px 200px 40px 40px;
  background: conic-gradient(from 210deg at 50% 40%, #8f6d3f, #d4b483, #7a5c34, #cbaa78, #8f6d3f);
  filter: blur(6px) brightness(0.85); opacity: 0.5;
}
/* Animated fallback (no-WebGL mode): the gold form breathes and a soft light
   sweeps across, so the hero still feels alive without 3D. */
.no-3d .hero-fallback::after { animation: heroBreath 9s ease-in-out infinite; }
.no-3d .hero-fallback::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(105deg, transparent 32%, rgba(233,220,193,0.07) 50%, transparent 68%);
  background-size: 260% 100%; animation: heroSheen 7.5s var(--e-inout) infinite;
}
@keyframes heroBreath {
  0%, 100% { transform: translateY(-50%) rotate(-2deg) scale(1); opacity: 0.48; }
  50%      { transform: translateY(-53%) rotate(2.5deg) scale(1.05); opacity: 0.62; }
}
@keyframes heroSheen { 0% { background-position: 130% 0; } 100% { background-position: -130% 0; } }

/* Metallic sheen slowly traversing the headline (all modes). */
.hero-title .metal-text { background-size: 220% 100%; animation: metalSweep 8s var(--e-inout) infinite; }
@keyframes metalSweep { 0%, 100% { background-position: 0% 0; } 50% { background-position: 100% 0; } }

@media (prefers-reduced-motion: reduce) {
  .no-3d .hero-fallback::after, .no-3d .hero-fallback::before,
  .hero-title .metal-text { animation: none; }
}
/* Editorial framing */
.hero-scrim {
  position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background:
    linear-gradient(95deg, rgba(10,10,11,0.88) 0%, rgba(10,10,11,0.52) 32%, rgba(10,10,11,0) 58%),
    linear-gradient(0deg, rgba(10,10,11,0.9) 0%, rgba(10,10,11,0) 42%);
}
.hero-frame { position: absolute; inset: clamp(0.9rem, 2.2vw, 1.8rem); z-index: 2; pointer-events: none; }
.hero-frame i { position: absolute; width: 26px; height: 26px; border: 1px solid color-mix(in srgb, var(--imp-gold) 55%, transparent); }
.hero-frame i:nth-child(1) { top: 0; left: 0; border-right: 0; border-bottom: 0; }
.hero-frame i:nth-child(2) { top: 0; right: 0; border-left: 0; border-bottom: 0; }
.hero-frame i:nth-child(3) { bottom: 0; left: 0; border-right: 0; border-top: 0; }
.hero-frame i:nth-child(4) { bottom: 0; right: 0; border-left: 0; border-top: 0; }

.hero-shell {
  position: relative; z-index: 3; min-height: 100svh; display: flex; flex-direction: column;
  justify-content: space-between; padding-top: calc(var(--header-h) + 1.4rem);
  padding-bottom: clamp(3.4rem, 8vh, 6.5rem);
}
.hero-topbar { display: flex; justify-content: space-between; align-items: center; gap: var(--s-4); }
.hero-kicker { font-size: var(--fs-xs); letter-spacing: var(--ls-eyebrow); text-transform: uppercase; color: var(--imp-ivory-dim); }
.hero-headline-block { max-width: min(92%, 48rem); margin-top: auto; }
.hero-eyebrow { margin-bottom: var(--s-4); }
.hero-title {
  font-family: var(--font-display); font-weight: 700; letter-spacing: -0.015em;
  font-size: clamp(3rem, 1.6rem + 8vw, 9.5rem); line-height: 0.9; text-wrap: balance;
}
.hero .hero-sub { margin-top: var(--s-5); max-width: 28rem; }
.hero-cta { margin-top: var(--s-6); display: flex; gap: var(--s-4); flex-wrap: wrap; }
.hero-vertical {
  position: absolute; right: clamp(1rem, 2.4vw, 2rem); top: 50%; z-index: 3;
  transform: translateY(-50%) rotate(90deg); transform-origin: right center;
  font-size: var(--fs-xs); letter-spacing: 0.32em; text-transform: uppercase; color: var(--imp-muted);
  display: flex; align-items: center; gap: 0.7rem;
}
.hero-vertical::after { content: ""; width: 40px; height: 1px; background: linear-gradient(90deg, var(--imp-gold), transparent); }
@media (max-width: 760px) { .hero-vertical { display: none; } }
.hero-scroll {
  position: absolute; bottom: var(--s-6); left: 50%; transform: translateX(-50%); z-index: 2;
  font-size: var(--fs-xs); letter-spacing: var(--ls-nav); text-transform: uppercase; color: var(--imp-muted);
  display: flex; flex-direction: column; align-items: center; gap: var(--s-3);
}
.hero-scroll .line { width: 1px; height: 42px; background: linear-gradient(var(--imp-gold), transparent); position: relative; overflow: hidden; }
.hero-scroll .line::after { content:""; position:absolute; top:-40%; left:0; width:100%; height:40%; background: var(--imp-champagne); animation: scrollLine 2.2s var(--e-inout) infinite; }
@keyframes scrollLine { 0%{transform:translateY(-100%)} 60%,100%{transform:translateY(340%)} }
@media (prefers-reduced-motion: reduce) { .hero-scroll .line::after { animation: none; } }
@media (max-width: 760px) { .hero { text-align: left; } .hero-cta .btn { flex: 1 1 auto; } }

/* --- Marquee value strip -------------------------------------------------- */
.value-strip { border-block: 1px solid var(--imp-line-soft); background: var(--imp-black-2); overflow: hidden; }
.value-track { display: flex; gap: var(--s-8); padding: var(--s-4) 0; white-space: nowrap; width: max-content; animation: marquee 34s linear infinite; }
.value-track span { display: inline-flex; align-items: center; gap: var(--s-3); font-size: var(--fs-xs); letter-spacing: var(--ls-eyebrow); text-transform: uppercase; color: var(--imp-ivory-dim); }
.value-track span b { color: var(--imp-gold); font-weight: 400; }
@keyframes marquee { to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) { .value-track { animation: none; } }

/* --- GCC delivery map ----------------------------------------------------- */
.map-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 5rem); align-items: center; }
@media (max-width: 900px) { .map-grid { grid-template-columns: 1fr; } }
.gcc-map { width: 100%; border: 1px solid var(--imp-line); border-radius: var(--r-lg); background: var(--imp-black-2); padding: var(--s-5); }
.gcc-map svg { width: 100%; height: auto; }
.map-node { cursor: pointer; }
.map-node circle { transition: r var(--t-fast) var(--e-out), fill var(--t-fast); }
.map-node:hover circle.dot, .map-node.active circle.dot { fill: var(--imp-gold-bright); }
.map-node text { font-family: var(--font-sans); font-size: 12px; fill: var(--imp-ivory-dim); letter-spacing: 0.08em; }
.map-node:hover text, .map-node.active text { fill: var(--imp-ivory); }
.map-legend { display: flex; gap: var(--s-5); margin-top: var(--s-4); flex-wrap: wrap; font-size: var(--fs-xs); color: var(--imp-muted); }
.map-legend i { width: 10px; height: 10px; border-radius: 50%; display: inline-block; margin-right: 6px; vertical-align: middle; }
.ship-facts { display: grid; gap: var(--s-4); }
.ship-fact { display: flex; gap: var(--s-4); padding: var(--s-4); border: 1px solid var(--imp-line-soft); border-radius: var(--r-md); background: var(--imp-charcoal); }
.ship-fact svg { width: 26px; height: 26px; color: var(--imp-gold); flex: none; }
.ship-fact h4 { font-size: var(--fs-sm); letter-spacing: 0.06em; text-transform: uppercase; color: var(--imp-ivory); }
.ship-fact p { font-size: var(--fs-sm); color: var(--imp-ivory-dim); }
.placeholder-tag { font-size: var(--fs-xs); color: var(--imp-gold-deep); font-style: italic; }

/* --- Editorial campaign --------------------------------------------------- */
.editorial { position: relative; }
.edito-panel {
  position: relative; min-height: 82vh; display: flex; align-items: flex-end; overflow: hidden;
  border-radius: var(--r-lg); border: 1px solid var(--imp-line-soft); margin-bottom: var(--s-5);
}
.edito-panel .edito-bg { position: absolute; inset: 0; z-index: 0; }
.edito-panel .edito-bg svg, .edito-panel .edito-bg img { width: 100%; height: 100%; object-fit: cover; }
.edito-panel::after { content: ""; position: absolute; inset: 0; z-index: 1; background: linear-gradient(0deg, rgba(0,0,0,0.85), rgba(0,0,0,0.1) 60%); }
.edito-copy { position: relative; z-index: 2; padding: clamp(2rem, 5vw, 4rem); max-width: 40rem; }
.edito-copy .h2 { font-size: clamp(2rem, 4vw, 3.6rem); }
.edito-index { font-family: var(--font-serif); font-size: clamp(4rem, 12vw, 9rem); color: color-mix(in srgb, var(--imp-gold) 22%, transparent); position: absolute; top: 4%; right: 6%; z-index: 2; line-height: 1; }

/* --- Featured / collection lists ----------------------------------------- */
.filters-layout { display: grid; grid-template-columns: 260px 1fr; gap: var(--s-7); align-items: start; }
@media (max-width: 940px) { .filters-layout { grid-template-columns: 1fr; } .filters-aside { position: static; } }
.filters-aside { position: sticky; top: calc(var(--header-h) + var(--s-4)); display: flex; flex-direction: column; gap: var(--s-6); }
/* The sidebar scrolls on its own, independent of the product grid. */
@media (min-width: 941px) {
  .filters-aside {
    max-height: calc(100vh - var(--header-h) - 2rem);
    overflow-y: auto; overscroll-behavior: contain;
    padding-right: var(--s-3); scrollbar-width: thin;
    scrollbar-color: var(--imp-line) transparent;
  }
  .filters-aside::-webkit-scrollbar { width: 6px; }
  .filters-aside::-webkit-scrollbar-thumb { background: var(--imp-line); border-radius: 3px; }
}
.filter-group h4 { font-size: var(--fs-xs); letter-spacing: 0.16em; text-transform: uppercase; color: var(--imp-ivory); margin-bottom: var(--s-3); }
.filter-list { display: flex; flex-direction: column; gap: var(--s-2); }
.check { display: flex; align-items: center; gap: var(--s-3); font-size: var(--fs-sm); color: var(--imp-ivory-dim); cursor: pointer; }
.check input { accent-color: var(--imp-gold); width: 16px; height: 16px; }
.check:hover { color: var(--imp-ivory); }
.plp-toolbar { display: flex; align-items: center; justify-content: space-between; gap: var(--s-4); margin-bottom: var(--s-5); flex-wrap: wrap; }
.plp-count { font-size: var(--fs-sm); color: var(--imp-muted); }
.filters-mobile-toggle { display: none; }
@media (max-width: 940px) { .filters-mobile-toggle { display: inline-flex; } .filters-aside { display: none; } .filters-aside.open { display: flex; } }

/* --- Product detail (PDP) ------------------------------------------------- */
.pdp { display: grid; grid-template-columns: 1.15fr 1fr; gap: clamp(2rem, 5vw, 5rem); align-items: start; }
@media (max-width: 940px) { .pdp { grid-template-columns: 1fr; } }
.gallery { display: flex; flex-direction: column; gap: var(--s-3); position: sticky; top: calc(var(--header-h) + var(--s-4)); }
@media (max-width: 940px) { .gallery { position: static; } }
.gallery-main { aspect-ratio: 4/5; border-radius: var(--r-lg); overflow: hidden; border: 1px solid var(--imp-line-soft); background: var(--imp-charcoal); position: relative; }
.gallery-main img, .gallery-main svg, .gallery-main canvas { width: 100%; height: 100%; object-fit: cover; }
.gallery-thumbs { display: flex; gap: var(--s-3); flex-wrap: wrap; }
.gallery-thumbs button { width: 76px; height: 92px; border-radius: var(--r-md); overflow: hidden; border: 1px solid var(--imp-line); opacity: 0.6; transition: opacity var(--t-fast), border-color var(--t-fast); }
.gallery-thumbs button.active, .gallery-thumbs button:hover { opacity: 1; border-color: var(--imp-gold); }
.gallery-thumbs button svg, .gallery-thumbs button img { width: 100%; height: 100%; object-fit: cover; }

.pdp-info { display: flex; flex-direction: column; gap: var(--s-5); }
.pdp-price { font-size: 1.6rem; font-family: var(--font-serif); }
.pdp-section { border-top: 1px solid var(--imp-line-soft); padding-top: var(--s-5); }
.accordion { border-top: 1px solid var(--imp-line-soft); }
.accordion-item { border-bottom: 1px solid var(--imp-line-soft); }
.accordion-trigger { width: 100%; display: flex; justify-content: space-between; align-items: center; padding: var(--s-4) 0; text-align: left; font-size: var(--fs-sm); letter-spacing: 0.1em; text-transform: uppercase; color: var(--imp-ivory); }
.accordion-trigger .plus { width: 18px; height: 18px; position: relative; flex: none; }
.accordion-trigger .plus::before, .accordion-trigger .plus::after { content: ""; position: absolute; background: var(--imp-gold); transition: transform var(--t-fast); }
.accordion-trigger .plus::before { top: 8px; left: 0; width: 18px; height: 1.5px; }
.accordion-trigger .plus::after { left: 8px; top: 0; width: 1.5px; height: 18px; }
.accordion-trigger[aria-expanded="true"] .plus::after { transform: scaleY(0); }
.accordion-panel { overflow: hidden; max-height: 0; transition: max-height var(--t-med) var(--e-out); }
.accordion-panel .inner { padding: 0 0 var(--s-5); color: var(--imp-ivory-dim); font-size: var(--fs-sm); line-height: 1.7; }

.cod-note { display: flex; align-items: center; gap: var(--s-3); font-size: var(--fs-sm); color: var(--imp-ivory-dim); }
.cod-note svg { width: 18px; height: 18px; color: var(--imp-gold); }

/* --- Cart / checkout page ------------------------------------------------- */
.checkout-grid { display: grid; grid-template-columns: 1.3fr 0.85fr; gap: clamp(2rem, 4vw, 4rem); align-items: start; }
@media (max-width: 940px) { .checkout-grid { grid-template-columns: 1fr; } }
.summary-card { background: var(--imp-charcoal); border: 1px solid var(--imp-line); border-radius: var(--r-lg); padding: var(--s-5); position: sticky; top: calc(var(--header-h) + var(--s-4)); }
.cart-table .line-item { grid-template-columns: 96px 1fr auto; }
.cart-table .thumb { width: 96px; height: 120px; }
.step-head { display: flex; align-items: center; gap: var(--s-3); margin-bottom: var(--s-4); }
.step-head .num { width: 28px; height: 28px; border-radius: 50%; border: 1px solid var(--imp-gold); color: var(--imp-gold); display: grid; place-items: center; font-size: var(--fs-sm); }
.pay-option { display: flex; gap: var(--s-3); align-items: flex-start; padding: var(--s-4); border: 1px solid var(--imp-line); border-radius: var(--r-md); cursor: pointer; transition: border-color var(--t-fast); }
.pay-option:hover, .pay-option.selected { border-color: color-mix(in srgb, var(--imp-gold) 55%, transparent); }
.pay-option input { accent-color: var(--imp-gold); margin-top: 3px; }
.pay-option .h4 { font-size: var(--fs-sm); color: var(--imp-ivory); }
.config-flag { display: inline-block; font-size: var(--fs-xs); color: var(--imp-gold-deep); font-style: italic; border: 1px dashed var(--imp-gold-deep); border-radius: var(--r-sm); padding: 0.1rem 0.4rem; }

/* --- Page hero (interior pages) ------------------------------------------- */
.page-hero { padding-top: calc(var(--header-h) + clamp(3rem, 7vw, 6rem)); padding-bottom: clamp(2rem, 4vw, 4rem); text-align: center; position: relative; }
.page-hero .breadcrumb { justify-content: center; margin-bottom: var(--s-4); }
.page-hero h1 { font-size: var(--fs-h1); }
.page-hero p { max-width: 40rem; margin: var(--s-4) auto 0; }
.breadcrumb { display: flex; gap: var(--s-2); align-items: center; font-size: var(--fs-xs); letter-spacing: 0.1em; text-transform: uppercase; color: var(--imp-muted); }
.breadcrumb a:hover { color: var(--imp-gold-bright); }
.breadcrumb .sep { color: var(--imp-line); }

/* --- Prose (policy/legal/faq) -------------------------------------------- */
.prose { max-width: 46rem; margin-inline: auto; }
.prose h2 { font-family: var(--font-serif); font-size: 1.6rem; margin-top: var(--s-7); margin-bottom: var(--s-3); }
.prose h3 { font-size: 1.1rem; margin-top: var(--s-5); margin-bottom: var(--s-2); color: var(--imp-champagne); }
.prose p, .prose li { color: var(--imp-ivory-dim); line-height: 1.75; }
.prose p + p { margin-top: var(--s-4); }
.prose ul { margin: var(--s-3) 0; padding-left: 1.2rem; list-style: none; }
.prose ul li { position: relative; padding-left: var(--s-4); margin-top: var(--s-2); }
.prose ul li::before { content: ""; position: absolute; left: 0; top: 0.7em; width: 5px; height: 5px; background: var(--imp-gold); border-radius: 50%; }
[dir="rtl"] .prose ul { padding-left: 0; padding-right: 1.2rem; }
[dir="rtl"] .prose ul li { padding-left: 0; padding-right: var(--s-4); }
[dir="rtl"] .prose ul li::before { left: auto; right: 0; }

/* FAQ accordion reuse */
.faq-list { max-width: 46rem; margin-inline: auto; }

/* --- Feature cards / about ------------------------------------------------ */
.feature-card { padding: var(--s-6); border: 1px solid var(--imp-line-soft); border-radius: var(--r-lg); background: var(--imp-charcoal); height: 100%; }
.feature-card .ic { width: 40px; height: 40px; color: var(--imp-gold); margin-bottom: var(--s-4); }
.feature-card h3 { font-family: var(--font-serif); font-size: 1.3rem; margin-bottom: var(--s-3); }
.feature-card p { color: var(--imp-ivory-dim); font-size: var(--fs-sm); }
.stat { text-align: center; }
.stat .num { font-family: var(--font-serif); font-size: clamp(2.4rem, 5vw, 3.6rem); color: var(--imp-gold-bright); }
.stat .lbl { font-size: var(--fs-xs); letter-spacing: 0.14em; text-transform: uppercase; color: var(--imp-muted); }

/* --- Newsletter / footer -------------------------------------------------- */
.newsletter { background: linear-gradient(180deg, var(--imp-black-2), var(--imp-black)); border-top: 1px solid var(--imp-line-soft); text-align: center; }
.newsletter .inline-form { max-width: 30rem; margin: var(--s-6) auto 0; }
.footer { background: var(--imp-black-2); border-top: 1px solid var(--imp-line); padding-block: var(--s-8) var(--s-6); }
.footer-grid { display: grid; grid-template-columns: 1.4fr repeat(4, 1fr); gap: var(--s-6); }
@media (max-width: 940px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer-grid { grid-template-columns: 1fr; } }
.footer h5 { font-size: var(--fs-xs); letter-spacing: 0.16em; text-transform: uppercase; color: var(--imp-ivory); margin-bottom: var(--s-4); }
.footer ul li { margin-bottom: var(--s-3); }
.footer ul a { color: var(--imp-muted); font-size: var(--fs-sm); transition: color var(--t-fast); }
.footer ul a:hover { color: var(--imp-gold-bright); }
.footer-brand p { color: var(--imp-muted); font-size: var(--fs-sm); max-width: 22rem; margin-top: var(--s-4); }
.footer-social { display: flex; gap: var(--s-3); margin-top: var(--s-5); }
.footer-social a { width: 40px; height: 40px; border: 1px solid var(--imp-line); border-radius: 50%; display: grid; place-items: center; color: var(--imp-ivory-dim); transition: all var(--t-fast); }
.footer-social a:hover { color: var(--imp-gold-bright); border-color: var(--imp-gold); }
.footer-social svg { width: 18px; height: 18px; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; gap: var(--s-4); flex-wrap: wrap; margin-top: var(--s-7); padding-top: var(--s-5); border-top: 1px solid var(--imp-line-soft); font-size: var(--fs-xs); color: var(--imp-muted); }

/* --- 404 ------------------------------------------------------------------ */
.err-hero { min-height: 80vh; display: grid; place-items: center; text-align: center; }
.err-code { font-family: var(--font-serif); font-size: clamp(6rem, 22vw, 16rem); line-height: 0.9; }

/* --- Recently viewed rail ------------------------------------------------- */
.rail { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(240px, 1fr); gap: var(--s-5); overflow-x: auto; padding-bottom: var(--s-4); scroll-snap-type: x mandatory; }
.rail > * { scroll-snap-align: start; }
@media (min-width: 941px) { .rail { grid-auto-columns: minmax(0, 1fr); grid-template-columns: repeat(4, 1fr); grid-auto-flow: row; overflow: visible; } }