/* ============================================================================
   IMPERIUM — COMPONENTS
   Header/nav, buttons, badges, product cards, cart drawer, forms, toasts.
   ========================================================================== */

/* --- Buttons -------------------------------------------------------------- */
.btn {
  --btn-bg: transparent; --btn-fg: var(--imp-ivory); --btn-bd: var(--imp-line);
  position: relative; display: inline-flex; align-items: center; justify-content: center;
  gap: var(--s-3); padding: 0.95rem 1.9rem; border-radius: var(--r-pill);
  font-size: var(--fs-sm); font-weight: 500; letter-spacing: var(--ls-nav);
  text-transform: uppercase; color: var(--btn-fg); background: var(--btn-bg);
  border: 1px solid var(--btn-bd); cursor: pointer; overflow: hidden;
  transition: color var(--t-med) var(--e-out), border-color var(--t-med) var(--e-out),
              background var(--t-med) var(--e-out), transform var(--t-fast) var(--e-out);
  will-change: transform;
}
.btn > * { position: relative; z-index: 1; }
.btn:active { transform: scale(0.98); }

/* Gold primary — solid champagne-gold fill, dark ink. */
.btn-gold { --btn-bg: var(--imp-gold); --btn-fg: var(--imp-on-gold); --btn-bd: var(--imp-gold); font-weight: 600; }
.btn-gold::after {
  content: ""; position: absolute; inset: 0; z-index: 0;
  background: linear-gradient(100deg, var(--imp-gold-bright), var(--imp-champagne));
  opacity: 0; transition: opacity var(--t-med) var(--e-out);
}
.btn-gold:hover::after { opacity: 1; }
.btn-gold:hover { border-color: var(--imp-gold-bright); }

/* Ghost / outline — sweeps to a gold hairline fill on hover. */
.btn-ghost { --btn-bd: var(--imp-line); }
.btn-ghost::after {
  content: ""; position: absolute; inset: 0; z-index: 0; transform: translateY(101%);
  background: color-mix(in srgb, var(--imp-gold) 12%, transparent);
  transition: transform var(--t-med) var(--e-out);
}
.btn-ghost:hover { border-color: color-mix(in srgb, var(--imp-gold) 55%, transparent); color: var(--imp-gold-bright); }
.btn-ghost:hover::after { transform: translateY(0); }

.btn-lg { padding: 1.15rem 2.4rem; }
.btn-sm { padding: 0.6rem 1.1rem; font-size: var(--fs-xs); }
.btn-block { width: 100%; }
.btn[disabled] { opacity: 0.45; pointer-events: none; }

/* Text link with animated gold underline */
.link-underline { position: relative; color: var(--imp-ivory); }
.link-underline::after {
  content: ""; position: absolute; left: 0; bottom: -3px; width: 100%; height: 1px;
  background: var(--imp-gold); transform: scaleX(0); transform-origin: right;
  transition: transform var(--t-med) var(--e-out);
}
.link-underline:hover { color: var(--imp-gold-bright); }
.link-underline:hover::after { transform: scaleX(1); transform-origin: left; }

.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; border-radius: var(--r-pill); position: relative;
  color: var(--imp-ivory); transition: color var(--t-fast) var(--e-out), background var(--t-fast);
}
.icon-btn:hover { color: var(--imp-gold-bright); background: color-mix(in srgb, var(--imp-charcoal) 70%, transparent); }
.icon-btn svg { width: 20px; height: 20px; }
.count-badge {
  position: absolute; top: 4px; right: 2px; min-width: 17px; height: 17px; padding: 0 4px;
  background: var(--imp-gold); color: var(--imp-on-gold); border-radius: var(--r-pill);
  font-size: 10px; font-weight: 700; display: grid; place-items: center; line-height: 1;
}
.count-badge:empty, .count-badge[data-count="0"] { display: none; }

/* --- Badges --------------------------------------------------------------- */
.badge {
  display: inline-flex; align-items: center; gap: 0.4rem; padding: 0.3rem 0.7rem;
  border: 1px solid color-mix(in srgb, var(--imp-gold) 40%, transparent); border-radius: var(--r-pill);
  font-size: 0.66rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--imp-champagne); background: color-mix(in srgb, var(--imp-gold) 8%, transparent);
}
.badge svg { width: 12px; height: 12px; }
.badge-soft { border-color: var(--imp-line); color: var(--imp-muted); background: transparent; }
.badge-oos { border-color: color-mix(in srgb, var(--imp-danger) 45%, transparent); color: var(--imp-danger); background: transparent; }

/* --- Header / nav --------------------------------------------------------- */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: var(--z-header);
  height: var(--header-h); display: flex; align-items: center;
  transition: background var(--t-med) var(--e-out), border-color var(--t-med), backdrop-filter var(--t-med);
  border-bottom: 1px solid transparent;
}
.header.scrolled {
  background: color-mix(in srgb, var(--imp-black) 78%, transparent);
  backdrop-filter: blur(14px) saturate(1.1); -webkit-backdrop-filter: blur(14px) saturate(1.1);
  border-bottom-color: var(--imp-line-soft);
}
.header .container { display: flex; align-items: center; justify-content: space-between; gap: var(--s-5); width: 100%; }
.header-nav { display: flex; align-items: center; gap: clamp(1.1rem, 2vw, 2.2rem); }
.header-actions { display: flex; align-items: center; gap: var(--s-2); }

.nav-link {
  font-size: var(--fs-xs); letter-spacing: var(--ls-nav); text-transform: uppercase;
  color: var(--imp-ivory-dim); position: relative; padding: 0.4rem 0;
  transition: color var(--t-fast) var(--e-out);
}
.nav-link::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px; height: 1px;
  background: var(--imp-gold); transform: scaleX(0); transform-origin: left;
  transition: transform var(--t-med) var(--e-out);
}
.nav-link:hover, .nav-link[aria-current="page"] { color: var(--imp-ivory); }
.nav-link:hover::after, .nav-link[aria-current="page"]::after { transform: scaleX(1); }

/* Wordmark (text logo) */
.wordmark {
  font-family: var(--font-display); font-weight: 600; font-size: 1.3rem;
  letter-spacing: 0.34em; text-indent: 0.34em; color: var(--imp-ivory);
  display: inline-flex; align-items: center; gap: 0.5rem; line-height: 1;
}
.wordmark .mark { width: 26px; height: auto; flex: none; }
.wordmark:hover { color: var(--imp-ivory); }

.mini-select {
  background: transparent; border: 1px solid var(--imp-line); color: var(--imp-ivory-dim);
  border-radius: var(--r-pill); padding: 0.4rem 0.6rem; font-size: var(--fs-xs);
  letter-spacing: 0.08em; cursor: pointer;
}
.mini-select:hover { border-color: color-mix(in srgb, var(--imp-gold) 50%, transparent); color: var(--imp-ivory); }

/* Mobile nav */
.nav-toggle { display: none; }
.mobile-nav { display: none; }
@media (max-width: 940px) {
  .header-nav.primary { display: none; }
  .nav-toggle { display: inline-flex; }
  .mobile-nav {
    display: block; position: fixed; inset: 0; z-index: var(--z-drawer);
    background: color-mix(in srgb, var(--imp-black) 96%, transparent);
    backdrop-filter: blur(20px); padding: calc(var(--header-h) + var(--s-6)) var(--gutter) var(--s-6);
    transform: translateY(-100%); transition: transform var(--t-med) var(--e-inout);
    overflow-y: auto;
  }
  .mobile-nav.open { transform: translateY(0); }
  .mobile-nav a.m-link {
    display: block; font-family: var(--font-serif); font-size: 1.9rem; padding: var(--s-4) 0;
    border-bottom: 1px solid var(--imp-line-soft); color: var(--imp-ivory);
  }
  .mobile-nav a.m-link:hover { color: var(--imp-gold-bright); }
}

/* --- Product card --------------------------------------------------------- */
.product-card {
  position: relative; display: flex; flex-direction: column;
  background: var(--imp-charcoal); border: 1px solid var(--imp-line-soft);
  border-radius: var(--r-lg); overflow: hidden;
  transition: transform var(--t-med) var(--e-out), border-color var(--t-med), box-shadow var(--t-med);
  transform-style: preserve-3d;
}
.product-card:hover {
  transform: translateY(-6px); border-color: color-mix(in srgb, var(--imp-gold) 35%, transparent);
  box-shadow: var(--shadow-card);
}
.product-media {
  position: relative; aspect-ratio: 4 / 5; overflow: hidden;
  background: radial-gradient(120% 120% at 50% 0%, var(--imp-charcoal-2), var(--imp-black-2));
}
.product-media img, .product-media svg { width: 100%; height: 100%; object-fit: cover; transition: transform var(--t-slow) var(--e-out), opacity var(--t-med); }
.product-media .img-hover { position: absolute; inset: 0; opacity: 0; }
.product-card:hover .product-media .img-main { transform: scale(1.05); opacity: 0; }
.product-card:hover .product-media .img-hover { opacity: 1; transform: scale(1.05); }
.product-card:not(:has(.img-hover)):hover .product-media .img-main { opacity: 1; }

.product-badges { position: absolute; top: var(--s-3); left: var(--s-3); display: flex; flex-direction: column; gap: var(--s-2); z-index: 2; }
.product-tag {
  font-size: 0.62rem; letter-spacing: 0.16em; text-transform: uppercase; font-weight: 600;
  padding: 0.28rem 0.6rem; border-radius: var(--r-sm); background: var(--imp-gold); color: var(--imp-on-gold);
}
.product-tag.soft { background: color-mix(in srgb, var(--imp-black) 70%, transparent); color: var(--imp-champagne); border: 1px solid var(--imp-line); backdrop-filter: blur(6px); }

.wish-btn {
  position: absolute; top: var(--s-3); right: var(--s-3); z-index: 2; width: 38px; height: 38px;
  border-radius: var(--r-pill); display: grid; place-items: center;
  background: color-mix(in srgb, var(--imp-black) 55%, transparent); backdrop-filter: blur(6px);
  color: var(--imp-ivory); border: 1px solid var(--imp-line);
  transition: color var(--t-fast), border-color var(--t-fast), transform var(--t-fast);
}
.wish-btn:hover { color: var(--imp-gold-bright); border-color: var(--imp-gold); transform: scale(1.08); }
.wish-btn svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 1.6; }
.wish-btn.active svg { fill: var(--imp-gold); stroke: var(--imp-gold); }

.product-quick {
  position: absolute; left: var(--s-3); right: var(--s-3); bottom: var(--s-3); z-index: 2;
  display: flex; gap: var(--s-2); opacity: 0; transform: translateY(10px);
  transition: opacity var(--t-med) var(--e-out), transform var(--t-med) var(--e-out);
}
.product-card:hover .product-quick, .product-card:focus-within .product-quick { opacity: 1; transform: none; }
@media (hover: none) { .product-quick { opacity: 1; transform: none; } }

.product-body { padding: var(--s-4) var(--s-4) var(--s-5); display: flex; flex-direction: column; gap: var(--s-2); }
.product-body .cat { font-size: var(--fs-xs); letter-spacing: 0.14em; text-transform: uppercase; color: var(--imp-muted); }
.product-body .name { font-family: var(--font-serif); font-size: 1.2rem; color: var(--imp-ivory); }
.product-body .name a:hover { color: var(--imp-gold-bright); }
.product-row { display: flex; align-items: center; justify-content: space-between; margin-top: auto; }
.price { font-size: 1rem; color: var(--imp-ivory); font-variant-numeric: tabular-nums; }
.price .was { color: var(--imp-muted); text-decoration: line-through; margin-right: 0.5rem; font-size: var(--fs-sm); }
.swatches { display: flex; gap: 0.35rem; }
.swatch { width: 15px; height: 15px; border-radius: var(--r-pill); border: 1px solid rgba(255,255,255,0.25); box-shadow: inset 0 0 0 2px rgba(0,0,0,0.35); }

/* --- Filters bar ---------------------------------------------------------- */
.chip {
  display: inline-flex; align-items: center; gap: 0.4rem; padding: 0.5rem 0.9rem;
  border: 1px solid var(--imp-line); border-radius: var(--r-pill); font-size: var(--fs-xs);
  letter-spacing: 0.08em; text-transform: uppercase; color: var(--imp-ivory-dim);
  cursor: pointer; transition: all var(--t-fast) var(--e-out); background: transparent;
}
.chip:hover { border-color: color-mix(in srgb, var(--imp-gold) 45%, transparent); color: var(--imp-ivory); }
.chip[aria-pressed="true"], .chip.active { background: var(--imp-gold); color: var(--imp-on-gold); border-color: var(--imp-gold); }

/* --- Forms ---------------------------------------------------------------- */
.field { display: flex; flex-direction: column; gap: var(--s-2); }
.field label, .label { font-size: var(--fs-xs); letter-spacing: 0.12em; text-transform: uppercase; color: var(--imp-ivory-dim); }
.input, .select, .textarea {
  width: 100%; background: var(--imp-charcoal-2); border: 1px solid var(--imp-line);
  color: var(--imp-ivory); padding: 0.85rem 1rem; border-radius: var(--r-md);
  font-size: var(--fs-body); transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.input::placeholder, .textarea::placeholder { color: var(--imp-muted-2); }
.input:focus, .select:focus, .textarea:focus {
  outline: none; border-color: color-mix(in srgb, var(--imp-gold) 60%, transparent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--imp-gold) 16%, transparent);
}
.textarea { min-height: 120px; resize: vertical; }
.field-error { color: var(--imp-danger); font-size: var(--fs-xs); letter-spacing: 0.04em; }
.input[aria-invalid="true"], .select[aria-invalid="true"] { border-color: var(--imp-danger); }
.field-note { font-size: var(--fs-xs); color: var(--imp-muted); }

.inline-form { display: flex; gap: var(--s-3); flex-wrap: wrap; }
.inline-form .input { flex: 1 1 220px; }

/* Size / colour option pills on product page */
.opt-grid { display: flex; flex-wrap: wrap; gap: var(--s-2); }
.opt {
  min-width: 3rem; padding: 0.6rem 0.9rem; text-align: center; border: 1px solid var(--imp-line);
  border-radius: var(--r-md); color: var(--imp-ivory-dim); cursor: pointer; font-size: var(--fs-sm);
  letter-spacing: 0.04em; transition: all var(--t-fast) var(--e-out); background: var(--imp-charcoal-2);
}
.opt:hover { border-color: color-mix(in srgb, var(--imp-gold) 50%, transparent); color: var(--imp-ivory); }
.opt[aria-pressed="true"] { border-color: var(--imp-gold); color: var(--imp-ivory); box-shadow: inset 0 0 0 1px var(--imp-gold); }
.opt[disabled] { opacity: 0.35; text-decoration: line-through; cursor: not-allowed; }
.opt-color { width: 40px; height: 40px; min-width: 0; padding: 0; border-radius: var(--r-pill); position: relative; }
.opt-color[aria-pressed="true"] { box-shadow: 0 0 0 2px var(--imp-black), 0 0 0 3px var(--imp-gold); }

/* --- Cart drawer ---------------------------------------------------------- */
.drawer-scrim {
  position: fixed; inset: 0; z-index: var(--z-drawer); background: rgba(0,0,0,0.6);
  opacity: 0; visibility: hidden; transition: opacity var(--t-med), visibility var(--t-med);
  backdrop-filter: blur(2px);
}
.drawer-scrim.open { opacity: 1; visibility: visible; }
.drawer {
  position: fixed; top: 0; right: 0; bottom: 0; z-index: calc(var(--z-drawer) + 1);
  width: min(440px, 100vw); background: var(--imp-black-2); border-left: 1px solid var(--imp-line);
  transform: translateX(100%); transition: transform var(--t-med) var(--e-inout);
  display: flex; flex-direction: column; box-shadow: var(--shadow-pop);
}
[dir="rtl"] .drawer { right: auto; left: 0; border-left: 0; border-right: 1px solid var(--imp-line); transform: translateX(-100%); }
.drawer.open { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; padding: var(--s-5); border-bottom: 1px solid var(--imp-line); }
.drawer-head .h3 { font-size: 1.25rem; }
.drawer-body { flex: 1; overflow-y: auto; padding: var(--s-4) var(--s-5); }
.drawer-foot { padding: var(--s-5); border-top: 1px solid var(--imp-line); background: var(--imp-black); }

.line-item { display: grid; grid-template-columns: 72px 1fr auto; gap: var(--s-4); padding: var(--s-4) 0; border-bottom: 1px solid var(--imp-line-soft); }
.line-item .thumb { width: 72px; height: 90px; border-radius: var(--r-md); overflow: hidden; background: var(--imp-charcoal); }
.line-item .thumb img, .line-item .thumb svg { width: 100%; height: 100%; object-fit: cover; }
.line-item .li-name { font-family: var(--font-serif); font-size: 1.05rem; }
.line-item .li-meta { font-size: var(--fs-xs); color: var(--imp-muted); letter-spacing: 0.04em; }
.qty { display: inline-flex; align-items: center; border: 1px solid var(--imp-line); border-radius: var(--r-pill); overflow: hidden; }
.qty button { width: 30px; height: 30px; color: var(--imp-ivory-dim); }
.qty button:hover { color: var(--imp-gold-bright); }
.qty span { min-width: 26px; text-align: center; font-size: var(--fs-sm); font-variant-numeric: tabular-nums; }
.li-remove { font-size: var(--fs-xs); color: var(--imp-muted); letter-spacing: 0.06em; }
.li-remove:hover { color: var(--imp-danger); }

.totals { display: flex; flex-direction: column; gap: var(--s-2); font-size: var(--fs-sm); }
.totals .t-row { display: flex; justify-content: space-between; color: var(--imp-ivory-dim); }
.totals .t-row.grand { color: var(--imp-ivory); font-size: 1.05rem; padding-top: var(--s-3); margin-top: var(--s-2); border-top: 1px solid var(--imp-line); }
.totals .t-row.grand strong { font-family: var(--font-serif); font-weight: 600; }
.totals .t-row .free { color: var(--imp-success); }

.empty-state { text-align: center; padding: var(--s-8) var(--s-4); color: var(--imp-muted); }
.empty-state svg { width: 46px; height: 46px; margin: 0 auto var(--s-4); color: var(--imp-line); }

/* --- Toast ---------------------------------------------------------------- */
.toast-wrap { position: fixed; bottom: var(--s-5); left: 50%; transform: translateX(-50%); z-index: var(--z-toast); display: flex; flex-direction: column; gap: var(--s-2); align-items: center; pointer-events: none; }
.toast {
  background: var(--imp-charcoal-2); border: 1px solid var(--imp-line); border-left: 2px solid var(--imp-gold);
  color: var(--imp-ivory); padding: 0.85rem 1.2rem; border-radius: var(--r-md); font-size: var(--fs-sm);
  box-shadow: var(--shadow-pop); display: flex; align-items: center; gap: var(--s-3);
  animation: toastIn var(--t-med) var(--e-out); max-width: 90vw;
}
.toast svg { width: 18px; height: 18px; color: var(--imp-gold); flex: none; }
@keyframes toastIn { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { .toast { animation: none; } }

/* --- Sticky mobile add-to-cart -------------------------------------------- */
.sticky-atc {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: var(--z-sticky);
  display: none; align-items: center; justify-content: space-between; gap: var(--s-4);
  padding: var(--s-3) var(--gutter); background: color-mix(in srgb, var(--imp-black) 92%, transparent);
  backdrop-filter: blur(14px); border-top: 1px solid var(--imp-line); transform: translateY(110%);
  transition: transform var(--t-med) var(--e-out);
}
.sticky-atc.show { transform: translateY(0); }
@media (max-width: 760px) { .sticky-atc { display: flex; } }

/* --- Reduced-motion: kill card lift ------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  .product-card:hover { transform: none; }
  .product-card:hover .product-media .img-main { transform: none; }
}