/* =============================================================
   Lexora Store — Premium UI Upgrade Layer  (ui-upgrade.css)
   Additive, non-destructive polish loaded site-wide AFTER the
   page stylesheets so it can gently elevate shared components.
   Uses existing design tokens (--home-*, brand palette) and works
   in light + dark mode. Fully respects prefers-reduced-motion.
   Safe to remove: delete this file + its <link> in
   includes/head_assets.inc.php to fully revert.
   ============================================================= */

/* ---- Shared easing / timing tokens -------------------------- */
:root {
  --ux-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ux-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ux-fast: 0.18s;
  --ux-med: 0.32s;
  --ux-slow: 0.55s;
  --ux-ring: 0 0 0 3px rgba(37, 99, 235, 0.35);
  --ux-lift-shadow: 0 18px 40px -18px rgba(15, 23, 42, 0.35),
                    0 8px 18px -12px rgba(15, 23, 42, 0.28);
  --ux-glow: 0 10px 30px -10px rgba(37, 99, 235, 0.55);
}
html.dark {
  --ux-ring: 0 0 0 3px rgba(96, 165, 250, 0.45);
  --ux-lift-shadow: 0 22px 48px -20px rgba(0, 0, 0, 0.75),
                    0 10px 22px -14px rgba(0, 0, 0, 0.6);
  --ux-glow: 0 12px 34px -10px rgba(59, 130, 246, 0.6);
}

/* ---- Global refinements ------------------------------------- */
html { scroll-behavior: smooth; }

*::selection {
  background: rgba(37, 99, 235, 0.22);
  color: inherit;
}
html.dark *::selection { background: rgba(96, 165, 250, 0.3); }

body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* Consistent, accessible keyboard focus everywhere */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
  outline: none;
  box-shadow: var(--ux-ring);
  border-radius: 8px;
}

/* Refined custom scrollbar (desktop) */
@media (pointer: fine) {
  * { scrollbar-width: thin; scrollbar-color: rgba(37,99,235,0.45) transparent; }
  *::-webkit-scrollbar { width: 10px; height: 10px; }
  *::-webkit-scrollbar-track { background: transparent; }
  *::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, rgba(37,99,235,0.55), rgba(37,99,235,0.35));
    border-radius: 999px;
    border: 2px solid transparent;
    background-clip: padding-box;
  }
  *::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, rgba(37,99,235,0.8), rgba(37,99,235,0.55));
    background-clip: padding-box;
  }
}

/* =============================================================
   Scroll reveal (JS adds .is-visible via IntersectionObserver)
   ============================================================= */
[data-ux-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity var(--ux-slow) var(--ux-ease-out),
              transform var(--ux-slow) var(--ux-ease-out);
  will-change: opacity, transform;
}
[data-ux-reveal].is-visible {
  opacity: 1;
  transform: none;
}
/* staggered children */
[data-ux-reveal-stagger] > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--ux-med) var(--ux-ease-out),
              transform var(--ux-med) var(--ux-ease-out);
}
[data-ux-reveal-stagger].is-visible > * { opacity: 1; transform: none; }

/* =============================================================
   PRODUCT CARDS  (home-card / shop-card / product-card)
   ============================================================= */
.home-card,
.shop-card,
.product-card {
  transition: transform var(--ux-med) var(--ux-ease),
              box-shadow var(--ux-med) var(--ux-ease),
              border-color var(--ux-med) var(--ux-ease);
  will-change: transform;
}

@media (hover: hover) {
  .home-card:hover,
  .shop-card:hover,
  .product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--ux-lift-shadow);
    border-color: rgba(37, 99, 235, 0.35);
  }
}

/* Image zoom inside card media */
.home-card__media,
.shop-card__promo-overlay,
.shop-card .shop-card__media,
.product-card a[class*="media"] {
  overflow: hidden;
}
.home-card__media img,
.shop-card img,
.product-card img {
  transition: transform var(--ux-slow) var(--ux-ease);
  will-change: transform;
}
@media (hover: hover) {
  .home-card:hover .home-card__media img,
  .shop-card:hover img,
  .product-card:hover img {
    transform: scale(1.06);
  }
}

/* Badges — softer gradient chips with subtle depth */
.home-card__badge {
  box-shadow: 0 4px 12px -4px rgba(0, 0, 0, 0.35);
  backdrop-filter: saturate(1.2);
  letter-spacing: 0.02em;
}
.home-card__badge--new    { background: linear-gradient(135deg, #2563eb, #1d4ed8) !important; color:#fff !important; }
.home-card__badge--popular{ background: linear-gradient(135deg, #7c3aed, #6d28d9) !important; color:#fff !important; }
.home-card__badge--pick   { background: linear-gradient(135deg, #0ea5e9, #2563eb) !important; color:#fff !important; }
.home-card__badge--flash  { background: linear-gradient(135deg, #f43f5e, #dc2626) !important; color:#fff !important; }

/* =============================================================
   BUTTONS — shine sweep + press feedback (shared classes)
   ============================================================= */
.home-btn,
.home-card__btn,
.shop-card__btn,
.add-to-cart-btn {
  position: relative;
  overflow: hidden;
  transition: transform var(--ux-fast) var(--ux-ease),
              box-shadow var(--ux-med) var(--ux-ease),
              background-color var(--ux-fast) var(--ux-ease),
              filter var(--ux-fast) var(--ux-ease);
  isolation: isolate;
}

/* shine sweep pseudo element */
.home-btn::after,
.home-card__btn::after,
.add-to-cart-btn::after {
  content: "";
  position: absolute;
  inset: 0;
  transform: translateX(-120%) skewX(-18deg);
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
  transition: transform 0.7s var(--ux-ease-out);
  pointer-events: none;
  z-index: 1;
}
@media (hover: hover) {
  .home-btn:hover::after,
  .home-card__btn:hover::after,
  .add-to-cart-btn:hover::after { transform: translateX(120%) skewX(-18deg); }
}

.home-btn:active,
.home-card__btn:active,
.shop-card__btn:active,
.add-to-cart-btn:active { transform: scale(0.96); }

/* Primary CTAs get a richer gradient + glow on hover */
.home-btn--primary {
  background-image: linear-gradient(135deg, #2563eb 0%, #1d4ed8 55%, #1e40af 100%);
  box-shadow: 0 6px 18px -8px rgba(37, 99, 235, 0.65);
}
@media (hover: hover) {
  .home-btn--primary:hover { box-shadow: var(--ux-glow); transform: translateY(-2px); filter: brightness(1.05); }
}

.home-btn--pill {
  transition: transform var(--ux-fast) var(--ux-ease), box-shadow var(--ux-med) var(--ux-ease), background-color var(--ux-fast) var(--ux-ease);
}
@media (hover: hover) {
  .home-btn--pill:hover { transform: translateY(-2px); box-shadow: 0 10px 24px -12px rgba(37,99,235,0.6); }
}

/* Add-to-cart success pulse (JS toggles .ux-added briefly) */
.add-to-cart-btn.ux-added,
.home-card__btn.ux-added {
  background: linear-gradient(135deg, #16a34a, #15803d) !important;
  color: #fff !important;
  animation: ux-pop 0.4s var(--ux-ease);
}
@keyframes ux-pop {
  0% { transform: scale(1); }
  45% { transform: scale(1.09); }
  100% { transform: scale(1); }
}

/* =============================================================
   SECTION TITLES — subtle animated accent underline
   ============================================================= */
.home-section__title,
.home-trust-band__title {
  position: relative;
  display: inline-block;
}
.home-section__title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.4rem;
  height: 3px;
  width: 0;
  border-radius: 999px;
  background: linear-gradient(90deg, #2563eb, #7c3aed);
  transition: width var(--ux-slow) var(--ux-ease-out) 0.15s;
}
.home-section.is-visible .home-section__title::after,
.home-section__title.is-visible::after { width: 2.75rem; }

/* =============================================================
   HERO — smoother controls
   ============================================================= */
.home-hero-slider__arrow {
  transition: transform var(--ux-fast) var(--ux-ease), background-color var(--ux-fast) var(--ux-ease), box-shadow var(--ux-med) var(--ux-ease);
  backdrop-filter: blur(6px);
}
@media (hover: hover) {
  .home-hero-slider__arrow:hover { transform: scale(1.12); box-shadow: 0 8px 22px -8px rgba(0,0,0,0.55); }
}
.home-hero-slider__dot { transition: width var(--ux-med) var(--ux-ease), background-color var(--ux-med) var(--ux-ease); }

/* =============================================================
   PROMO CARDS + TRUST BAND — lift + icon accents
   ============================================================= */
.home-promo-card {
  transition: transform var(--ux-med) var(--ux-ease), box-shadow var(--ux-med) var(--ux-ease);
  overflow: hidden;
}
.home-promo-card__thumb img { transition: transform var(--ux-slow) var(--ux-ease); }
@media (hover: hover) {
  .home-promo-card:hover { transform: translateY(-5px); box-shadow: var(--ux-lift-shadow); }
  .home-promo-card:hover .home-promo-card__thumb img { transform: scale(1.08); }
  .home-promo-card:hover .home-promo-card__link i { transform: translateX(4px); }
}
.home-promo-card__link i { transition: transform var(--ux-fast) var(--ux-ease); }

.home-value,
.home-trust-chip {
  transition: transform var(--ux-med) var(--ux-ease), box-shadow var(--ux-med) var(--ux-ease), border-color var(--ux-med) var(--ux-ease);
}
@media (hover: hover) {
  .home-value:hover { transform: translateY(-4px); box-shadow: var(--ux-lift-shadow); }
  .home-value:hover .home-value__icon { transform: scale(1.1) rotate(-4deg); }
  .home-trust-chip:hover { transform: translateY(-2px); border-color: rgba(37,99,235,0.4); }
}
.home-value__icon { transition: transform var(--ux-med) var(--ux-ease); }

/* =============================================================
   IMAGE FADE-IN on load (JS adds .ux-img-in when loaded)
   ============================================================= */
img.ux-img-fade {
  opacity: 0;
  transition: opacity var(--ux-slow) var(--ux-ease-out);
}
img.ux-img-fade.ux-img-in { opacity: 1; }

/* =============================================================
   BACK TO TOP button (injected by JS)
   ============================================================= */
#ux-to-top {
  position: fixed;
  right: 20px;
  bottom: 22px;
  z-index: 900;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  color: #fff;
  font-size: 15px;
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  box-shadow: 0 10px 26px -8px rgba(37, 99, 235, 0.7);
  opacity: 0;
  transform: translateY(16px) scale(0.85);
  pointer-events: none;
  transition: opacity var(--ux-med) var(--ux-ease), transform var(--ux-med) var(--ux-ease), box-shadow var(--ux-med) var(--ux-ease);
}
#ux-to-top.is-visible { opacity: 1; transform: none; pointer-events: auto; }
@media (hover: hover) {
  #ux-to-top:hover { transform: translateY(-3px) scale(1.06); box-shadow: 0 14px 32px -8px rgba(37, 99, 235, 0.85); }
}
@media (max-width: 640px) {
  #ux-to-top { right: 14px; bottom: 16px; width: 42px; height: 42px; }
}

/* =============================================================
   HEADER — slightly stronger shadow once scrolled
   ============================================================= */
body.ux-scrolled .lex-glass {
  box-shadow: 0 10px 30px -12px rgba(15, 23, 42, 0.28);
}
html.dark body.ux-scrolled .lex-glass {
  box-shadow: 0 14px 34px -14px rgba(0, 0, 0, 0.7);
}
.lex-header__cart-badge { transition: transform var(--ux-fast) var(--ux-ease); }
.lex-header__cart-badge.ux-bump { animation: ux-bump 0.4s var(--ux-ease); }
@keyframes ux-bump {
  0% { transform: scale(1); }
  40% { transform: scale(1.4); }
  100% { transform: scale(1); }
}

/* =============================================================
   Reduced motion — disable all movement/animation
   ============================================================= */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  [data-ux-reveal],
  [data-ux-reveal-stagger] > * { opacity: 1 !important; transform: none !important; transition: none !important; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}