/* ══════════════════════════════════════
   TOKENS
══════════════════════════════════════ */
:root {
  --nav-h:       60px;         /* desktop nav height */
  --mega-max:    1240px;       /* max-width constraint */
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'DM Sans', sans-serif;
  background: var(--steel);
  color: var(--indigo);
  -webkit-font-smoothing: antialiased;
  min-height: 200vh; /* demo scroll space */
}
img { display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; }


/* ══════════════════════════════════════
   DEMO PAGE BACKDROP
══════════════════════════════════════ */

/* ══════════════════════════════════════
   NAV WRAPPER — bt-nav-main
   White bar on desktop,
   slide drawer on mobile.
══════════════════════════════════════ */
.bt-nav-main {
  position: sticky;
  top: 0;
  z-index: 200;
  /* copper left bar */
  border-left: 3px solid var(--copper);
}

/* inner max-width constraint */
.bt-nav-main-inner {
  max-width: var(--mega-max);
  margin: 0 auto;
  padding: 0 56px;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  height: 40px;
}

/* mobile close btn — hidden on desktop */
.bt-nav-close {
  display: none;
  position: absolute;
  top: 16px; right: 16px;
  width: 36px; height: 36px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  color: var(--white);
  font-size: 20px;
  align-items: center;
  justify-content: center;
  z-index: 10;
  transition: background 0.2s;
}
.bt-nav-close:hover { background: rgba(255,255,255,0.16); }


/* ══════════════════════════════════════
   TOP-LEVEL NAV LIST — bt-nav-list
══════════════════════════════════════ */
.bt-nav-list {
  display: flex;
  align-items: center;
  gap: 0;
  height: 100%;
  width: 100%;
}

/* nav-item must be positioned so bt-mega absolute
   stays within hover chain without gap */
.bt-nav-item {
  position: static;
  height: 100%;
  display: flex;
  align-items: stretch;
}

/* ── top-level link ── */
.bt-nav-link {
  display: flex;
  align-items: center;
  padding: 0 18px;
  height: 100%;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-mid);
  transition: color 0.2s var(--ease);
  position: relative;
  white-space: nowrap;
  border: none;
  background: none;
}

/* copper bottom bar indicator */
.bt-nav-link::after {
  content: '';
  position: absolute;
  bottom: 0; left: 18px; right: 18px;
  height: 2px;
  background: var(--copper);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s var(--ease);
}

.bt-nav-link:hover { color: var(--indigo); }
.bt-nav-link:hover::after { transform: scaleX(1); }

/* home link */
.bt-nav-link--home { padding-left: 0; }
.bt-nav-link--home::after { left: 0; }

/* CTA link — Shop Now */
.bt-nav-link--primary {
  color: var(--white);
  background: var(--copper);
  padding: 0 22px;
  margin-left: auto;
  letter-spacing: 2px;
  transition: background 0.2s var(--ease);
}
.bt-nav-link--primary::after { display: none; }
.bt-nav-link--primary:hover { background: #a86c47; }

/* chevron indicator */
.bt-has-mega > .bt-nav-link,
.bt-has-items > .bt-nav-link { gap: 6px; }

.bt-has-mega > .bt-nav-link::before,
.bt-has-items > .bt-nav-link::before {
  content: '';
  order: 2;
  width: 6px; height: 6px;
  border-right: 1.5px solid var(--text-muted);
  border-bottom: 1.5px solid var(--text-muted);
  transform: rotate(45deg) translateY(-2px);
  transition: transform 0.2s var(--ease), border-color 0.2s;
  flex-shrink: 0;
}

/* chevron flips + link brightens when mega is hovered (CSS only) */
/*
.bt-has-mega:hover > .bt-nav-link,
.bt-has-items:hover > .bt-nav-link { color: var(--white); }
*/


.bt-has-mega:hover > .bt-nav-link::after,
.bt-has-items:hover > .bt-nav-link::after { transform: scaleX(1); }
.bt-has-mega:hover > .bt-nav-link::before,
.bt-has-items:hover > .bt-nav-link::before {
  transform: rotate(-135deg) translateY(1px);
  border-color: var(--copper);
}

/* mobile .is-open state for link styling */
.bt-nav-item.is-open > .bt-nav-link { color: var(--white); }
.bt-nav-item.is-open > .bt-nav-link::before {
  transform: rotate(-135deg) translateY(1px);
  border-color: var(--copper);
}


/* ══════════════════════════════════════
   MEGA PANEL — bt-mega
   position: absolute anchored to .bt-nav-main
   (which is position: relative / sticky).
   CSS :hover chain works perfectly because
   bt-nav-item stretches full height and
   bt-mega sits immediately below with no gap.
══════════════════════════════════════ */
.bt-mega {
  position: absolute;
  top: 100%; /* flush below nav bar — no pixel gap */
  left: 0;
  right: 0;
  z-index: 199;
  background: var(--white);
/*  border-top: 2px solid var(--copper);*/
  box-shadow: 0 16px 48px rgba(26,35,62,0.12), 0 4px 12px rgba(26,35,62,0.06);
  /* hidden */
  opacity: 0;
  transform: translateY(-6px);
  pointer-events: none;
  transition: opacity 0.22s var(--ease), transform 0.22s var(--ease);
  /* prevent hover bleeding from other nav items */
  visibility: hidden;
}

/* ── DESKTOP: pure CSS :hover ── */
@media (min-width: 861px) {
  .bt-has-mega:hover > .bt-mega,
  .bt-has-items:hover > .bt-mega {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
    visibility: visible;
  }
}

/* ── MOBILE: JS .is-open class ── */
.bt-nav-item.is-open > .bt-mega {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
  visibility: visible;
}

/* inner — max-width + padding */
.bt-mega-inner {
  max-width: var(--mega-max);
  margin: 0 auto;
  padding: 36px 56px 40px;
}

/* panel variant — 3-col grid */
.bt-mega-inner--panel {
  /* full width — no max-width cap on the inner wrapper
     so columns can breathe to their minimum 300px */
  max-width: none;
  padding: 0;
}

.bt-mega-panel { width: 100%; }

.bt-mega-panel-inner {
  display: grid;
  gap: 0;
  background: var(--border); /* gap colour */
}

/* 3 equal columns, each at least 300px wide.
   Panel stretches to fill the full .bt-mega width
   (which is already left:0 right:0 on the viewport). */
.bt-mega-panel-inner[data-cols="3"] {
  grid-template-columns: repeat(3, minmax(300px, 1fr));
  gap: 1px;
}

/* simple dropdown variant */
.bt-mega-inner:not(.bt-mega-inner--panel) {
  display: flex;
  gap: 40px;
}

/* ── bt-has-items: narrow single-column dropdown ──
   Overrides left:0 right:0 full-width behaviour.
   Anchors to the nav item itself so it drops
   directly below the trigger link. */
.bt-has-items > .bt-mega {
  left: auto;          /* detach from viewport left edge */
  right: auto;         /* detach from viewport right edge */
  width: 300px;        /* fixed narrow width */
  min-width: 240px;
  box-shadow: 0 8px 32px rgba(26,35,62,0.10), 0 2px 8px rgba(26,35,62,0.06);
  padding: 24px 28px 28px;
}

.bt-has-items > .bt-mega .bt-mega-inner {
  padding: 8px 0;      /* tighter vertical padding for list */
  max-width: none;
}

.bt-has-items > .bt-mega .bt-mega-col {
  padding: 0;
  background: var(--white);
}

.bt-has-items > .bt-mega .bt-mega-links ul {
  display: flex;
  flex-direction: column;
  gap: 0;
}


/* ── column ── */
.bt-mega-col {
  background: var(--white);
  padding: 24px 28px 28px;
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* column title */
.bt-mega-col-title {
  font-family: 'DM Sans', sans-serif;
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 3.5px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 12px;
  margin-top: 20px;
}
.bt-mega-col-title:first-child { margin-top: 0; }


/* ── link list ── */
.bt-mega-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-bottom: 8px;
}

.bt-mega-list li a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 8px;
  font-size: 13px;
  font-weight: 300;
  color: var(--text-mid);
  border-radius: 0;
  transition: background 0.15s, color 0.15s, padding-left 0.15s;
  position: relative;
}

.bt-mega-list li a::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
  background: var(--copper);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 0.2s var(--ease);
}

.bt-mega-list li a:hover {
  background: var(--steel);
  color: var(--indigo);
  padding-left: 12px;
}
.bt-mega-list li a:hover::before {
  transform: scaleY(1);
}

/* category icon */
.bt-mega-icon {
  width: 28px; height: 28px;
  object-fit: cover;
  flex-shrink: 0;
  opacity: 0.75;
  filter: grayscale(20%);
  transition: opacity 0.2s, filter 0.2s;
}
.bt-mega-list li a:hover .bt-mega-icon {
  opacity: 1;
  filter: none;
}

/* badge chip — "Popular" etc */
.bt-mega-badge-chip {
  display: inline-flex;
  align-items: center;
  height: 18px;
  padding: 0 7px;
  background: rgba(188,124,86,0.12);
  color: var(--copper);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-left: auto;
  flex-shrink: 0;
}


/* ── promo banner ── */
.bt-mega-banner {
  display: block;
  position: relative;
  overflow: hidden;
  height: 180px;
  background: var(--indigo);
  margin-bottom: 2px;
}

.bt-mega-banner img {
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.4;
  transition: opacity 0.4s var(--ease), transform 0.5s var(--ease);
}

.bt-mega-banner:hover img {
  opacity: 0.5;
  transform: scale(1.04);
}

/* copper left bar on banner */
.bt-mega-banner::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--copper);
  z-index: 2;
}

/* diagonal stripe on banner */
.bt-mega-banner::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    -55deg,
    rgba(255,255,255,0.025) 0px, rgba(255,255,255,0.025) 1px,
    transparent 1px, transparent 28px
  );
  z-index: 1;
  pointer-events: none;
}

.bt-mega-banner-overlay {
  position: absolute;
  inset: 0;
  z-index: 3;
  padding: 20px 20px 20px 24px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 4px;
}

.bt-mega-badge {
  display: inline-flex;
  align-items: center;
  height: 20px;
  padding: 0 8px;
  background: var(--copper);
  color: var(--white);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  align-self: flex-start;
  margin-bottom: 4px;
}

.bt-mega-banner-overlay h3 {
  font-family: 'Playfair Display', serif;
  font-size: 16px;
  font-weight: 400;
  color: var(--white);
  line-height: 1.25;
}

.bt-mega-banner-overlay p {
  font-size: 11px;
  font-weight: 300;
  color: rgba(255,255,255,0.55);
  line-height: 1.5;
}

.bt-mega-cta {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--copper);
  margin-top: 4px;
  display: block;
  transition: letter-spacing 0.2s;
}
.bt-mega-banner:hover .bt-mega-cta { letter-spacing: 2.5px; }


/* ── featured product card ── */
.bt-mega-product {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 14px 0;
  border-top: 1px solid var(--border);
}

.bt-mega-product-thumb {
  width: 64px; height: 64px;
  flex-shrink: 0;
  overflow: hidden;
  background: var(--steel);
}

.bt-mega-product-thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s var(--ease);
}
.bt-mega-product:hover .bt-mega-product-thumb img {
  transform: scale(1.06);
}

.bt-mega-product-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.bt-mega-product-label {
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--copper);
}

.bt-mega-product-name {
  font-family: 'DM Sans', sans-serif;
  font-size: 13px;
  font-weight: 400;
  color: var(--indigo);
  line-height: 1.35;
  transition: color 0.18s;
}
.bt-mega-product:hover .bt-mega-product-name { color: var(--copper); }

.bt-mega-product-price {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 2px;
}

.bt-mega-price-current {
  font-family: 'Playfair Display', serif;
  font-size: 15px;
  font-weight: 400;
  color: var(--indigo);
}

.bt-mega-price-old {
  font-size: 11px;
  font-weight: 300;
  color: var(--text-muted);
  text-decoration: line-through;
}


/* ── simple flyout dropdown ── */
.bt-flyout-item a {
  display: flex;
  align-items: center;
  padding: 8px 8px;
  font-size: 13px;
  font-weight: 300;
  color: var(--text-mid);
  transition: background 0.15s, color 0.15s, padding-left 0.15s;
  position: relative;
}
.bt-flyout-item a::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
  background: var(--copper);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 0.2s var(--ease);
}
.bt-flyout-item a:hover {
  background: var(--steel);
  color: var(--indigo);
  padding-left: 14px;
}
.bt-flyout-item a:hover::before { transform: scaleY(1); }

.bt-mega-links { display: flex; flex-direction: column; }

/* ── preview-item wrapper — transparent ── */
.bt-preview-item { display: contents; }


/* ══════════════════════════════════════
   MOBILE OVERLAY
══════════════════════════════════════ */
.bt-nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(26,35,62,0.6);
  z-index: 198;
  opacity: 0;
  transition: opacity 0.3s;
}
.bt-nav-overlay.is-open { opacity: 1; }


/* ══════════════════════════════════════
   MOBILE  ≤860px
══════════════════════════════════════ */
@media (max-width: 860px) {

  /* nav bar becomes a topbar with hamburger */
  .bt-nav-main {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--nav-h);
    /* mobile: slide-in drawer */
    transform: translateX(-100%);
    top: 0;
    width: min(320px, 85vw);
    height: 100vh;
    border-left: 3px solid var(--copper);
    border-right: none;
    overflow-y: auto;
    transition: transform 0.35s var(--ease);
    z-index: 201;
  }

  .bt-nav-main.is-open {
    transform: translateX(0);
  }

  .bt-nav-main-inner {
    height: auto;
    flex-direction: column;
    align-items: stretch;
    padding: 56px 0 40px;
  }

  .bt-nav-close { display: flex; }

  /* list becomes vertical */
  .bt-nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    height: auto;
  }

  .bt-nav-item {
    height: auto;
    flex-direction: column;
    align-items: stretch;
  }

  .bt-nav-link {
    padding: 14px 24px;
    font-size: 12px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    justify-content: space-between;
    color: rgba(255,255,255,0.75);
  }
  .bt-nav-link::after { display: none; }
  .bt-nav-link:hover,
  .bt-nav-item.is-open > .bt-nav-link { color: var(--white); background: rgba(255,255,255,0.06); }

  .bt-nav-link--home { padding-left: 24px; }
  .bt-nav-link--primary {
    margin: 16px 24px 0;
    padding: 0 22px;
    height: 44px;
    justify-content: center;
  }

  /* mega becomes accordion */
  .bt-mega {
    position: static;
    transform: none;
    opacity: 1;
    pointer-events: auto;
    box-shadow: none;
    border-top: none;
    border-left: 3px solid rgba(188,124,86,0.3);
    margin-left: 24px;
    background: rgba(255,255,255,0.05);
    display: none;
  }

  .bt-nav-item.is-open .bt-mega { display: block; }

  .bt-mega-inner,
  .bt-mega-inner--panel { padding: 0; }

  .bt-mega-panel-inner {
    display: flex !important;
    flex-direction: column;
    gap: 0;
    background: transparent;
  }

  .bt-mega-col {
    padding: 8px 0 8px 12px;
    background: transparent;
  }

  .bt-mega-col-title { color: rgba(255,255,255,0.35); margin-top: 12px; }

  .bt-mega-list li a,
  .bt-flyout-item a {
    color: rgba(255,255,255,0.6);
    padding: 7px 8px;
    font-size: 12px;
    background: transparent;
  }
  .bt-mega-list li a:hover,
  .bt-flyout-item a:hover {
    color: var(--white);
    background: rgba(255,255,255,0.06);
    padding-left: 14px;
  }

  /* hide banner and product card on mobile */
  .bt-mega-banner,
  .bt-mega-product { display: none; }

  /* hide icon on mobile */
  .bt-mega-icon { display: none; }

  /* overlay */
  .bt-nav-overlay { display: block; }

  /* hamburger button */
  .bt-hamburger {
    display: flex;
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--nav-h);
    background: var(--indigo);
    border-left: 3px solid var(--copper);
    background-image: repeating-linear-gradient(
      -55deg,
      rgba(255,255,255,0.018) 0px, rgba(255,255,255,0.018) 1px,
      transparent 1px, transparent 28px
    );
    z-index: 200;
    align-items: center;
    padding: 0 20px;
    gap: 12px;
  }
  .bt-hamburger__logo {
    font-family: 'Playfair Display', serif;
    font-size: 18px;
    font-weight: 400;
    color: var(--white);
    letter-spacing: 1px;
    flex: 1;
  }
  .bt-hamburger__btn {
    width: 40px; height: 40px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.15);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    padding: 10px;
  }
  .bt-hamburger__line {
    width: 20px; height: 1.5px;
    background: var(--white);
    display: block;
    transition: transform 0.25s var(--ease), opacity 0.2s;
  }
}

@media (min-width: 861px) {
  .bt-hamburger { display: none; }
  .bt-nav-overlay { display: none !important; }
}

a.bt-nav-link.bt-nav-link--primary:hover {
    color: var(--white);
}