/* ============================================================
   THE ROYAL HERITAGE BOX — main.css
   Design system: velvet jewellery box.
   Palette: bottle-green velvet / ivory silk / antique gold / garnet.
   Type: Marcellus (display) · Cormorant Garamond (editorial) · Mulish (utility)
   ============================================================ */

:root{
  --velvet:      #0E2620;   /* deep bottle green */
  --velvet-2:    #143229;   /* lifted velvet */
  --ivory:       #F3EDE2;   /* silk lining */
  --ivory-dim:   #D9D0BF;
  --gold:        #C9A24B;   /* antique gold */
  --gold-soft:   #A88A48;
  --garnet:      #6E2230;   /* accent stone */
  --ink:         #1C1A16;

  --font-display: 'Marcellus', serif;
  --font-editorial: 'Cormorant Garamond', serif;
  --font-utility: 'Mulish', sans-serif;

  /* fluid type scale (PRD 7: scales fluidly, no breakpoint jumps) */
  --fs-hero:  clamp(2.6rem, 8vw, 6.2rem);
  --fs-h2:    clamp(1.9rem, 4.4vw, 3.4rem);
  --fs-h3:    clamp(1.15rem, 2vw, 1.4rem);
  --fs-body:  clamp(1rem, 1.1vw, 1.125rem);
  --fs-small: clamp(.78rem, .9vw, .85rem);

  --ease-royal: cubic-bezier(.22,.61,.2,1);  /* one easing family site-wide (PRD 6) */
  --dur: .8s;
  --pad-section: clamp(4.5rem, 10vw, 9rem);
  --pad-x: clamp(1.25rem, 5vw, 6rem);
}

*,*::before,*::after{ box-sizing:border-box; margin:0; padding:0; }
html{ scroll-behavior:smooth; }
body{
  background: var(--ivory);
  color: var(--ink);
  font-family: var(--font-editorial);
  font-size: var(--fs-body);
  line-height: 1.65;
  overflow-x: hidden;      /* PRD 7: no body horizontal scroll */
}
img{ display:block; max-width:100%; }
a{ color:inherit; text-decoration:none; }
em{ font-style:italic; }

h1,h2,h3{ font-family: var(--font-display); font-weight:400; line-height:1.12; }
h2 em, h1 em{ font-family: var(--font-editorial); font-style:italic; }

.eyebrow{
  font-family: var(--font-utility);
  font-size: var(--fs-small);
  letter-spacing:.32em;
  text-transform:uppercase;
  color: var(--gold-soft);
  margin-bottom:1.1rem;
}
.section{ padding: var(--pad-section) var(--pad-x); }
.section__head{ max-width:760px; margin:0 auto 3.5rem; text-align:center; }
.section__head h2{ font-size: var(--fs-h2); }
.section--dark{ background: var(--velvet); color: var(--ivory); }
.section--dark .eyebrow{ color: var(--gold); }

.filigree{ color: var(--gold); }

/* ---------- buttons ---------- */
.btn{
  display:inline-block;
  font-family: var(--font-utility);
  font-size:.8rem;
  letter-spacing:.24em;
  text-transform:uppercase;
  padding:1rem 2.2rem;
  min-height:44px;                          /* touch target */
  border:1px solid var(--gold);
  transition: background var(--dur) var(--ease-royal), color var(--dur) var(--ease-royal), transform .4s var(--ease-royal);
}
.btn--gold{ color: var(--ivory); background: transparent; }
.btn--gold:hover, .btn--gold:focus-visible{ background: var(--gold); color: var(--velvet); transform: translateY(-2px); }
.btn--outline{ color: var(--ink); }
.btn--outline:hover, .btn--outline:focus-visible{ background: var(--velvet); border-color: var(--velvet); color: var(--ivory); }

:focus-visible{ outline:2px solid var(--gold); outline-offset:3px; }

/* ============================================================
   NAVIGATION (5.1)
   ============================================================ */
.nav{
  position:fixed; inset:0 0 auto 0; z-index:100;
  display:flex; align-items:center; justify-content:space-between;
  padding:1.1rem var(--pad-x);
  color: var(--ivory);
  transition: background .5s var(--ease-royal), padding .5s var(--ease-royal), box-shadow .5s var(--ease-royal);
}
.nav.is-scrolled{
  background: rgba(14,38,32,.92);
  backdrop-filter: blur(10px);
  padding-block:.7rem;
  box-shadow: 0 1px 0 rgba(201,162,75,.25);
}
.nav__brand{
  font-family: var(--font-display);
  font-size:1.05rem; letter-spacing:.14em; text-transform:uppercase;
}
.nav__brand span{ color: var(--gold); }
.nav__links{ display:flex; gap:2.2rem; }
.nav__links a{
  font-family: var(--font-utility); font-size:.78rem;
  letter-spacing:.22em; text-transform:uppercase;
  position:relative; padding:.5rem 0;
}
.nav__links a::after{
  content:""; position:absolute; left:0; bottom:0; height:1px; width:0;
  background: var(--gold); transition: width .45s var(--ease-royal);
}
.nav__links a:hover::after, .nav__links a:focus-visible::after{ width:100%; }

.nav__toggle{
  display:none; background:none; border:none; cursor:pointer;
  width:44px; height:44px; position:relative; z-index:120;
}
.nav__toggle span{
  display:block; width:26px; height:1.5px; background: var(--ivory);
  margin:7px auto; transition: transform .45s var(--ease-royal), opacity .3s;
}
.nav__toggle.is-open span:nth-child(1){ transform: translateY(4.25px) rotate(45deg); }
.nav__toggle.is-open span:nth-child(2){ transform: translateY(-4.25px) rotate(-45deg); }

.menu{
  position:fixed; inset:0; z-index:110;
  background: var(--velvet);
  display:flex; flex-direction:column; justify-content:center; align-items:center; gap:3rem;
  transform: translateX(100%);
  transition: transform .6s var(--ease-royal);
}
.menu.is-open{ transform: translateX(0); }
.menu__links{ display:flex; flex-direction:column; gap:1.6rem; text-align:center; }
.menu__links a{
  color: var(--ivory); font-family: var(--font-display);
  font-size:1.7rem; letter-spacing:.1em; padding:.4rem 1rem;
}
.menu__links a:hover{ color: var(--gold); }
.menu__note{ color: var(--gold-soft); font-style:italic; font-size:.95rem; }

/* ============================================================
   HERO (5.2)
   ============================================================ */
.hero{
  position:relative; min-height:100vh; min-height:100svh;
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  text-align:center; color: var(--ivory);
  padding: 6.5rem var(--pad-x) 5rem;   /* keeps content clear of nav & scroll cue on mobile portrait */
  overflow:hidden;
}
.hero__media{ position:absolute; inset:0; z-index:-2; }
.hero__placeholder{
  position:absolute; inset:0;
  background:
    radial-gradient(ellipse 90% 70% at 50% 30%, #1B4237 0%, var(--velvet) 62%, #081712 100%);
}
/* subtle woven-velvet texture */
.hero__placeholder::after{
  content:""; position:absolute; inset:0; opacity:.35;
  background-image:
    repeating-linear-gradient(115deg, rgba(255,255,255,.015) 0 2px, transparent 2px 6px),
    radial-gradient(circle at 50% 34%, rgba(201,162,75,.14), transparent 42%);
}
.hero__vignette{ position:absolute; inset:0; background: radial-gradient(ellipse at 50% 60%, transparent 40%, rgba(4,12,9,.55) 100%); }

.hero__eyebrow{
  font-family: var(--font-utility); font-size: var(--fs-small);
  letter-spacing:.4em; text-transform:uppercase; color: var(--gold);
  margin-bottom:1.6rem;
}
.hero__title{ font-size: var(--fs-hero); letter-spacing:.02em; }
.hero__rule{ margin:1.8rem auto; width: clamp(180px, 30vw, 320px); }
.hero__tagline{
  max-width:520px; margin:0 auto 2.4rem;
  font-size: clamp(1.05rem, 1.4vw, 1.25rem); font-style:italic; color: var(--ivory-dim);
}
.hero__scrollcue{
  position:absolute; bottom:2rem; left:50%; transform:translateX(-50%);
  display:flex; flex-direction:column; align-items:center; gap:.5rem;
  color: var(--gold); font-family: var(--font-utility);
  font-size:.7rem; letter-spacing:.3em; text-transform:uppercase;
  padding:.5rem;
}
.hero__scrollcue svg{ width:16px; height:28px; animation: cueBob 2.2s var(--ease-royal) infinite; }
@keyframes cueBob{ 0%,100%{ transform:translateY(0); } 50%{ transform:translateY(7px); } }

/* page-load stagger (PRD 6): applied only after JS adds .js on <html> */
.js [data-load]{ opacity:0; transform: translateY(26px); }
.js.loaded [data-load]{
  opacity:1; transform:none;
  transition: opacity .9s var(--ease-royal), transform .9s var(--ease-royal);
}
.js.loaded [data-load="1"]{ transition-delay:.15s; }
.js.loaded [data-load="2"]{ transition-delay:.32s; }
.js.loaded [data-load="3"]{ transition-delay:.5s; }
.js.loaded [data-load="4"]{ transition-delay:.66s; }
.js.loaded [data-load="5"]{ transition-delay:.82s; }
.js.loaded [data-load="6"]{ transition-delay:1.05s; }

/* ============================================================
   SCROLL REVEALS (PRD 6) — trigger once via IntersectionObserver
   ============================================================ */
.js [data-reveal]{ opacity:0; transform: translateY(34px); }
.js [data-reveal="left"]{ transform: translateX(-40px); }
.js [data-reveal].is-in{
  opacity:1; transform:none;
  transition: opacity var(--dur) var(--ease-royal), transform var(--dur) var(--ease-royal);
}
.js [data-stagger="1"].is-in{ transition-delay:.12s; }
.js [data-stagger="2"].is-in{ transition-delay:.24s; }
.js [data-stagger="3"].is-in{ transition-delay:.36s; }
.js [data-stagger="4"].is-in{ transition-delay:.48s; }
.js [data-stagger="5"].is-in{ transition-delay:.6s; }

/* line-by-line story reveal (PRD 5.3) */
.js [data-lines] .line{
  display:block; opacity:0; transform: translateY(14px);
}
.js [data-lines].is-in .line{
  opacity:1; transform:none;
  transition: opacity .7s var(--ease-royal), transform .7s var(--ease-royal);
  transition-delay: calc(var(--i) * .12s);
}

/* ============================================================
   STORY (5.3)
   ============================================================ */
.story__grid{
  display:grid; grid-template-columns: 1fr 1.15fr;
  gap: clamp(2rem, 5vw, 5rem); max-width:1180px; margin:0 auto; align-items:center;
}
.story__media img{ width:100%; aspect-ratio:4/5; object-fit:cover; }
.story__media{ position:relative; }
.story__media::after{
  content:""; position:absolute; inset:14px; border:1px solid rgba(201,162,75,.55); pointer-events:none;
}
.story__media figcaption{
  margin-top:.9rem; font-family: var(--font-utility);
  font-size: var(--fs-small); letter-spacing:.12em; color:#6f6a5e;
}
.story__text p{ margin-bottom:1.4rem; font-size: clamp(1.05rem, 1.3vw, 1.2rem); }
.story__quote{ margin-top:2.4rem; text-align:center; }
.story__mark{ width:52px; margin:0 auto 1rem; }
.story__quote p{
  font-family: var(--font-editorial); font-style:italic;
  font-size: clamp(1.25rem, 2vw, 1.6rem); color: var(--garnet); margin-bottom:.6rem;
}
.story__quote cite{ font-family: var(--font-utility); font-style:normal; font-size: var(--fs-small); letter-spacing:.2em; text-transform:uppercase; color:#6f6a5e; }

/* ============================================================
   CRAFTSMANSHIP (5.4)
   ============================================================ */
.craft__steps{
  list-style:none; display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap:2.5rem; max-width:1180px; margin:0 auto 4.5rem;
}
.craft__step{ border-top:1px solid rgba(201,162,75,.35); padding-top:1.4rem; }
.craft__num{
  font-family: var(--font-display); color: var(--gold);
  font-size:1.5rem; display:block; margin-bottom:.7rem;
}
.craft__step h3{ font-size: var(--fs-h3); margin-bottom:.5rem; }
.craft__step p{ color: var(--ivory-dim); font-size:.98rem; }

.hscroll{ max-width:1400px; margin:0 auto; }
.hscroll__track{
  display:flex; gap:1.4rem;
  overflow-x:auto; scroll-snap-type:x mandatory;
  padding-bottom:1rem; cursor:grab;
  -webkit-overflow-scrolling:touch;
  scrollbar-color: var(--gold) transparent; scrollbar-width:thin;
}
.hscroll__track.is-dragging{ cursor:grabbing; scroll-snap-type:none; }
.hscroll__item{
  flex:0 0 clamp(240px, 30vw, 380px);
  scroll-snap-align:start; position:relative; overflow:hidden;
}
.hscroll__item img{
  width:100%; aspect-ratio:4/5; object-fit:cover;
  transition: transform .9s var(--ease-royal);
}
.hscroll__item figcaption{
  position:absolute; inset:auto 0 0 0;
  padding:2.4rem 1.2rem .9rem;
  background: linear-gradient(transparent, rgba(6,16,12,.85));
  font-family: var(--font-utility); font-size:.8rem; letter-spacing:.18em; text-transform:uppercase;
  color: var(--ivory);
  opacity:0; transform: translateY(8px);
  transition: opacity .5s var(--ease-royal), transform .5s var(--ease-royal);
}
.hscroll__item:hover img, .hscroll__item:focus-visible img, .hscroll__item.is-tapped img{ transform: scale(1.06); }
.hscroll__item:hover figcaption, .hscroll__item:focus-visible figcaption, .hscroll__item.is-tapped figcaption{ opacity:1; transform:none; }
.hscroll__hint{
  margin-top:.6rem; text-align:right;
  font-family: var(--font-utility); font-size:.72rem; letter-spacing:.26em;
  text-transform:uppercase; color: var(--gold-soft);
}

/* ============================================================
   COLLECTIONS (5.5)
   ============================================================ */
.collections__grid{
  display:grid; grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.5rem, 3vw, 3rem); max-width:1180px; margin:0 auto;
}
.card__media{ position:relative; overflow:hidden; aspect-ratio:4/5; margin-bottom:1.3rem; }
.card__img{ position:absolute; inset:0; width:100%; height:100%; object-fit:cover; transition: opacity .8s var(--ease-royal), transform .9s var(--ease-royal); }
.card__img--alt{ opacity:0; transform: scale(1.05); }
.card:hover .card__img--alt, .card:focus-within .card__img--alt, .card.is-tapped .card__img--alt{ opacity:1; transform: scale(1); }
.card:hover .card__img--base, .card.is-tapped .card__img--base{ transform: scale(1.04); }
.card h3{ font-size: var(--fs-h3); margin-bottom:.4rem; }
.card p{ color:#5c574c; font-size:.98rem; }
.collections__cta{ text-align:center; margin-top:4rem; }
.collections__cta p{ font-style:italic; margin-bottom:1.4rem; color:#5c574c; }

/* ============================================================
   SIGNATURE PIECES (5.6)
   ============================================================ */
.signature__grid{
  display:grid; grid-template-columns: repeat(4, 1fr);
  gap: clamp(1.2rem, 2.4vw, 2.2rem); max-width:1280px; margin:0 auto;
}
.piece{ cursor:pointer; }
.piece__media{ position:relative; overflow:hidden; aspect-ratio:4/5; margin-bottom:1rem; }
.piece__media img{ position:absolute; inset:0; width:100%; height:100%; object-fit:cover; transition: opacity .85s var(--ease-royal), transform .95s var(--ease-royal); }
.piece__detail{ opacity:0; transform: scale(1.07); }
.piece:hover .piece__detail, .piece:focus-visible .piece__detail, .piece.is-tapped .piece__detail{ opacity:1; transform: scale(1); }
.piece figcaption strong{ display:block; font-family: var(--font-display); font-weight:400; font-size:1.05rem; letter-spacing:.03em; }
.piece figcaption span{ font-family: var(--font-utility); font-size:.75rem; letter-spacing:.2em; text-transform:uppercase; color: var(--gold-soft); }

/* ============================================================
   LEGACY (5.7)
   ============================================================ */
.timeline{ max-width:1400px; margin:0 auto 4.5rem; }
.timeline__track{
  display:flex; gap:2.5rem; overflow-x:auto; padding:2rem .5rem 1.5rem;
  scroll-snap-type:x proximity; scrollbar-color: var(--gold) transparent; scrollbar-width:thin;
  position:relative;
}
.timeline__item{
  flex:0 0 clamp(230px, 26vw, 320px); scroll-snap-align:start;
  border-top:1px solid var(--gold); padding-top:1.3rem; position:relative;
}
.timeline__item::before{
  content:"◆"; position:absolute; top:-9px; left:0; color: var(--gold); font-size:.7rem; background: var(--ivory); padding-right:.4rem;
}
.timeline__year{ font-family: var(--font-display); font-size:1.2rem; display:block; margin-bottom:.5rem; }
.timeline__item p{ color:#5c574c; font-size:.95rem; }

.marquee{ overflow:hidden; border-block:1px solid rgba(201,162,75,.4); padding-block:1.1rem; }
.marquee__track{
  display:flex; gap:3rem; align-items:center; width:max-content;
  animation: marquee 32s linear infinite;
  font-family: var(--font-utility); font-size:.78rem; letter-spacing:.3em; color:#7d7768;
  white-space:nowrap;
}
.marquee__track i{ color: var(--gold); font-style:normal; font-size:.6rem; }
@keyframes marquee{ to{ transform: translateX(-50%); } }

/* ============================================================
   TESTIMONIALS (5.8)
   ============================================================ */
.carousel{ max-width:820px; margin:0 auto; text-align:center; }
.carousel__viewport{ position:relative; min-height:220px; }
.carousel__slide{
  position:absolute; inset:0; opacity:0; transform: translateX(24px);
  transition: opacity .7s var(--ease-royal), transform .7s var(--ease-royal);
  pointer-events:none;
}
.carousel__slide.is-active{ opacity:1; transform:none; pointer-events:auto; }
.carousel__slide p{
  font-family: var(--font-editorial); font-style:italic;
  font-size: clamp(1.25rem, 2.2vw, 1.7rem); line-height:1.5; margin-bottom:1.2rem;
}
.carousel__slide cite{ font-family: var(--font-utility); font-style:normal; font-size:.78rem; letter-spacing:.24em; text-transform:uppercase; color: var(--gold); }
.carousel__controls{ display:flex; align-items:center; justify-content:center; gap:1.6rem; margin-top:2rem; }
.carousel__btn{
  background:none; border:1px solid rgba(201,162,75,.5); color: var(--gold);
  width:44px; height:44px; cursor:pointer; font-size:1rem;
  transition: background .4s var(--ease-royal), color .4s var(--ease-royal);
}
.carousel__btn:hover, .carousel__btn:focus-visible{ background: var(--gold); color: var(--velvet); }
.carousel__dots{ display:flex; gap:.7rem; }
.carousel__dot{
  width:10px; height:10px; min-width:10px; border-radius:50%;
  border:1px solid var(--gold); background:transparent; cursor:pointer; padding:0;
  transition: background .4s var(--ease-royal);
}
.carousel__dot.is-active{ background: var(--gold); }

/* ============================================================
   SOCIAL (5.9) — tiles ship unlinked; hover/tap feedback regardless
   ============================================================ */
.social__grid{
  display:grid; grid-template-columns: repeat(6, 1fr);
  gap:1rem; max-width:1400px; margin:0 auto;
}
.tile{ position:relative; overflow:hidden; aspect-ratio:1; }
.tile img{ width:100%; height:100%; object-fit:cover; transition: transform .8s var(--ease-royal); }
.tile__label{
  position:absolute; inset:0; display:flex; align-items:flex-end; padding:1rem;
  background: linear-gradient(transparent 55%, rgba(6,16,12,.75));
  color: var(--ivory); font-family: var(--font-utility);
  font-size:.72rem; letter-spacing:.24em; text-transform:uppercase;
  opacity:0; transition: opacity .5s var(--ease-royal);
}
.tile:hover img, .tile.is-tapped img{ transform: scale(1.07); }
.tile:hover .tile__label, .tile.is-tapped .tile__label{ opacity:1; }
a.tile:focus-visible .tile__label{ opacity:1; }   /* focus feedback only once tiles become links */

/* ============================================================
   FOOTER (5.10)
   ============================================================ */
.footer{ padding: var(--pad-section) var(--pad-x) 3rem; text-align:center; }
.footer__emblem{ width:96px; margin:0 auto 2rem; color: var(--gold); }
.emblem__path{ stroke-dasharray:400; stroke-dashoffset:400; }
.footer__emblem.is-in .emblem__path{ animation: draw 2.6s var(--ease-royal) forwards; }
.footer__emblem.is-in .emblem__path:nth-child(2){ animation-delay:.4s; }
.footer__emblem.is-in .emblem__path:nth-child(3){ animation-delay:.8s; }
.footer__emblem.is-in .emblem__path:nth-child(4){ animation-delay:1.1s; }
@keyframes draw{ to{ stroke-dashoffset:0; } }

.footer__tagline{
  font-family: var(--font-editorial); font-size: clamp(1.3rem, 2.4vw, 1.9rem);
  line-height:1.4; margin-bottom:2.8rem;
}
.footer__tagline em{ color: var(--gold); }
.footer__mail{
  font-family: var(--font-display); font-size: clamp(1rem, 1.6vw, 1.3rem);
  letter-spacing:.06em; border-bottom:1px solid rgba(201,162,75,.5);
  padding-bottom:.2rem; transition: color .4s var(--ease-royal);
  display:inline-block; min-height:44px;
}
.footer__mail:hover, .footer__mail:focus-visible{ color: var(--gold); }
.footer__addr{ margin-top:.9rem; color: var(--ivory-dim); font-style:italic; }
.footer__nav{ display:flex; flex-wrap:wrap; justify-content:center; gap:1.8rem; margin:3rem 0 2.5rem; }
.footer__nav a{
  font-family: var(--font-utility); font-size:.74rem; letter-spacing:.24em;
  text-transform:uppercase; color: var(--ivory-dim); padding:.6rem 0;
  transition: color .4s var(--ease-royal);
}
.footer__nav a:hover, .footer__nav a:focus-visible{ color: var(--gold); }
.footer__legal{ border-top:1px solid rgba(201,162,75,.25); padding-top:1.6rem; }
.footer__legal p{ font-family: var(--font-utility); font-size:.74rem; color:#8a9a90; }
.footer__legal-links{ margin-top:.4rem; letter-spacing:.14em; }

/* ============================================================
   RESPONSIVE (PRD 7): mobile ≤767 · tablet 768–1023 · desktop ≥1024
   ============================================================ */
@media (max-width: 1023px){
  .nav__links{ display:none; }
  .nav__toggle{ display:block; }
  .craft__steps{ grid-template-columns: repeat(2, 1fr); }
  .signature__grid{ grid-template-columns: repeat(2, 1fr); }
  .social__grid{ grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 767px){
  .story__grid{ grid-template-columns: 1fr; }
  .collections__grid{ grid-template-columns: 1fr; }
  .craft__steps{ grid-template-columns: 1fr; gap:1.8rem; }
  .signature__grid{ grid-template-columns: 1fr 1fr; }
  .social__grid{ grid-template-columns: repeat(2, 1fr); }
  .hero{ padding-top:5.5rem; padding-bottom:6.5rem; }
  .carousel__viewport{ min-height:300px; }
}

/* ============================================================
   REDUCED MOTION (PRD 6 / 9.2): simple fades in place of movement
   ============================================================ */
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  .js [data-load], .js [data-reveal], .js [data-reveal="left"], .js [data-lines] .line{
    transform:none !important;
  }
  .js.loaded [data-load], .js [data-reveal].is-in, .js [data-lines].is-in .line{
    transition: opacity .5s ease !important; transition-delay:0s !important;
  }
  .hero__scrollcue svg{ animation:none; }
  .marquee__track{ animation:none; flex-wrap:wrap; width:auto; justify-content:center; }
  .carousel__slide{ transform:none; transition: opacity .4s ease; }
  .emblem__path{ stroke-dashoffset:0; animation:none !important; }
  .hscroll__item img, .card__img, .piece__media img, .tile img{ transition: opacity .4s ease; transform:none !important; }
}