/* ==========================================================================
   MEMO — Professional Motion & Interaction Design System
   Aesthetic: Contemporary Arabic Luxury / Editorial Fashion
   Built to adhere strictly to SKILL-professional-web-motion.md
   ========================================================================== */

/* 1. Global Luxury Canvas Reveal (Page Load Transition) */
html.motion-capable body::after {
  content: "";
  position: fixed;
  z-index: 2000;
  inset: 0;
  pointer-events: none;
  background: var(--motion-canvas, var(--memo-ivory, #f5f0e7));
  animation: memo-canvas-reveal 0.78s cubic-bezier(0.76, 0, 0.24, 1) 0.05s both;
}

body.dashboard-shell {
  --motion-canvas: #101518;
}

@keyframes memo-canvas-reveal {
  0% {
    clip-path: inset(0 0 0 0);
    opacity: 1;
  }
  68% {
    opacity: 1;
  }
  99% {
    clip-path: inset(100% 0 0 0);
    opacity: 1;
  }
  100% {
    clip-path: inset(100% 0 0 0);
    opacity: 0;
    visibility: hidden;
  }
}

/* 2. GSAP Integration: Disable conflicting CSS transitions when GSAP is active */
body.gsap-active .home-motion-ready .category-rail,
body.gsap-active .home-motion-ready .ref-products,
body.gsap-active .home-motion-ready .essentials-banner,
body.gsap-active .home-motion-ready .service-strip,
body.gsap-active .home-motion-ready .ref-newsletter,
body.gsap-active .home-motion-ready .instagram-strip,
body.gsap-active .home-motion-ready .product-card,
body.gsap-active .home-motion-ready .category-rail__grid > a {
  opacity: 1 !important;
  transform: none !important;
  transition: none !important;
}

body.gsap-active .hero-kicker,
body.gsap-active .ref-hero__copy h1,
body.gsap-active .ref-hero__copy > p,
body.gsap-active .ref-hero__copy > div {
  animation: none !important;
  opacity: 1;
  transform: none;
}

body.gsap-active .ref-hero > img {
  animation: none !important;
}

/* Fallback for non-GSAP systems */
body.page-motion-ready:not(.gsap-active) [data-page-motion-item] {
  opacity: 0;
  transform: translate3d(0, 24px, 0);
  transition: opacity 0.7s cubic-bezier(0.2, 0.72, 0.2, 1),
              transform 0.85s cubic-bezier(0.16, 1, 0.3, 1);
  transition-delay: calc(var(--motion-start-delay, 0ms) + var(--motion-order, 0) * 65ms);
}

body.page-motion-ready:not(.gsap-active) [data-page-motion-group].is-page-visible [data-page-motion-item],
body.page-motion-ready:not(.gsap-active) [data-page-motion-item].is-page-visible {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

/* 3. Three.js Hero Ambient Atmosphere Canvas */
.hero-webgl {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 2;
  opacity: 0.88;
  mix-blend-mode: screen;
  transition: opacity 0.8s ease;
}

.hero-webgl.is-faded {
  opacity: 0;
}

/* 4. Hero Section Enhancements */
.ref-hero {
  will-change: transform;
}

.ref-hero > img {
  will-change: transform;
  transform-origin: center center;
}

.hero-scroll {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  transition: opacity 0.3s ease, color 0.3s ease;
}

.hero-scroll:hover {
  color: var(--memo-gold, #c9a35c);
}

.hero-scroll span {
  display: inline-block;
  width: 1px;
  height: 38px;
  background: linear-gradient(180deg, var(--memo-gold, #c9a35c), transparent);
  animation: memo-scroll-pulse 2.2s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

@keyframes memo-scroll-pulse {
  0% {
    transform: scaleY(0.2);
    transform-origin: top;
    opacity: 0.3;
  }
  50% {
    transform: scaleY(1);
    transform-origin: top;
    opacity: 1;
  }
  50.1% {
    transform: scaleY(1);
    transform-origin: bottom;
    opacity: 1;
  }
  100% {
    transform: scaleY(0.2);
    transform-origin: bottom;
    opacity: 0.3;
  }
}

/* 5. Header & Navigation Micro-interactions */
.site-header {
  transition: background-color 0.4s cubic-bezier(0.16, 1, 0.3, 1),
              height 0.4s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.4s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.45s cubic-bezier(0.16, 1, 0.3, 1),
              backdrop-filter 0.4s ease;
}

.site-header.is-sticky {
  position: fixed !important;
  top: 0;
  right: 0;
  left: 0;
  z-index: 1000;
  backdrop-filter: blur(18px) saturate(180%);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  background-color: rgba(10, 10, 10, 0.95) !important;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4) !important;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1) !important;
  color: var(--memo-ivory, #f5f0e7) !important;
}

/* Nav links in sticky navbar */
.site-header.is-sticky .desktop-nav a {
  color: var(--memo-ivory, #f5f0e7) !important;
  font-weight: 500;
  opacity: 0.94;
  transition: color 0.25s ease, opacity 0.25s ease;
}

.site-header.is-sticky .desktop-nav a:hover,
.site-header.is-sticky .desktop-nav a[aria-current="page"] {
  color: var(--memo-gold, #c9a35c) !important;
  opacity: 1;
}

.site-header.is-sticky .desktop-nav a::after {
  background: linear-gradient(90deg, var(--memo-gold, #c9a35c), var(--memo-gold-light, #dfc487)) !important;
}

/* Icons & Action buttons in sticky navbar */
.site-header.is-sticky .icon-btn,
.site-header.is-sticky .mobile-only,
.site-header.is-sticky .menu-trigger {
  color: var(--memo-ivory, #f5f0e7) !important;
  opacity: 0.94;
  transition: color 0.24s ease, transform 0.24s ease, opacity 0.24s ease;
}

.site-header.is-sticky .icon-btn:hover,
.site-header.is-sticky .mobile-only:hover,
.site-header.is-sticky .menu-trigger:hover {
  color: var(--memo-gold, #c9a35c) !important;
  opacity: 1;
}

.site-header.is-sticky .icon-btn svg,
.site-header.is-sticky .mobile-only svg,
.site-header.is-sticky .menu-trigger svg {
  stroke: currentColor !important;
  color: inherit !important;
}

.site-header.is-sticky .cart-link {
  color: var(--memo-ivory, #f5f0e7) !important;
}

.site-header.is-sticky .cart-link b {
  background: var(--memo-gold, #c9a35c) !important;
  color: #0a0a0a !important;
  border-color: #0a0a0a !important;
}

.site-header.is-sticky .brand img {
  filter: brightness(1.1) drop-shadow(0 2px 8px rgba(0, 0, 0, 0.4)) !important;
}

@media (max-width: 767px) {
  .site-header.is-sticky {
    background-color: rgba(10, 10, 10, 0.95) !important;
    color: var(--memo-ivory, #f5f0e7) !important;
    border-bottom-color: rgba(255, 255, 255, 0.1) !important;
  }
  .site-header.is-sticky .header-actions .icon-btn,
  .site-header.is-sticky .header-primary > .mobile-only {
    color: var(--memo-ivory, #f5f0e7) !important;
  }
  .site-header.is-sticky .header-actions .icon-btn:active,
  .site-header.is-sticky .header-primary > .mobile-only:active {
    background: rgba(255, 255, 255, 0.12) !important;
  }
}

.cart-link b {
  display: inline-grid;
  place-items: center;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), background-color 0.3s ease;
}

.cart-link b.pulse {
  animation: memo-badge-pop 0.45s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes memo-badge-pop {
  0% { transform: scale(1); }
  50% { transform: scale(1.35); background-color: var(--memo-gold, #c9a35c); color: #111; }
  100% { transform: scale(1); }
}

/* 6. Product Cards & Grids Micro-interactions */
.product-card {
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: transform;
}

@media (hover: hover) {
  .product-card:hover {
    transform: translateY(-4px);
  }
  .product-card:hover .product-card__primary {
    transform: scale(1.04);
  }
  .product-card:hover .product-card__cta {
    transform: translateY(0);
    opacity: 1;
  }
}

.product-card__media {
  overflow: hidden;
  position: relative;
}

.product-card__primary,
.product-card__secondary {
  transition: transform 0.65s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.5s ease;
}

.product-card__cta {
  transition: transform 0.32s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.32s ease;
  transform: translateY(12px);
  opacity: 0;
}

.wish-form .icon-btn {
  transition: transform 0.28s cubic-bezier(0.34, 1.56, 0.64, 1), color 0.2s ease;
}

.wish-form .icon-btn:hover {
  transform: scale(1.18);
  color: #cf384d;
}

.wish-form .icon-btn:active {
  transform: scale(0.85);
}

.wish-form .icon-btn.is-active svg {
  fill: currentColor;
  color: #cf384d;
  animation: memo-heart-pop 0.45s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes memo-heart-pop {
  0% { transform: scale(0.65); }
  50% { transform: scale(1.3); }
  100% { transform: scale(1); }
}

/* 7. Category Rail Micro-interactions */
.category-rail__grid > a {
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.category-rail__grid > a > div {
  overflow: hidden;
}

.category-rail__grid > a > div img {
  transition: transform 0.65s cubic-bezier(0.16, 1, 0.3, 1);
}

@media (hover: hover) {
  .category-rail__grid > a:hover > div img {
    transform: scale(1.07);
  }
  .category-rail__grid > a:hover strong {
    color: var(--memo-gold, #c9a35c);
  }
}

.category-rail__grid > a strong {
  transition: color 0.28s ease;
}

/* 8. Essentials Video Banner */
.essentials-banner {
  position: relative;
  overflow: hidden;
}

.essentials-banner video {
  will-change: transform;
}

.play-button {
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), background-color 0.25s ease;
}

.play-button:hover {
  transform: scale(1.12);
  background: rgba(201, 163, 92, 0.85);
  color: #0a0a0a;
}

.play-button:active {
  transform: scale(0.92);
}

/* 9. Service Strip Micro-interactions */
.service-strip > div {
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), background-color 0.25s ease;
}

@media (hover: hover) {
  .service-strip > div:hover {
    transform: translateY(-3px);
  }
  .service-strip > div:hover svg {
    transform: scale(1.12);
    stroke: var(--memo-gold, #c9a35c);
  }
}

.service-strip > div svg {
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), stroke 0.3s ease;
}

/* 10. Buttons & Interactive Forms */
.btn--gold {
  position: relative;
  overflow: hidden;
  transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.28s cubic-bezier(0.16, 1, 0.3, 1),
              background-color 0.25s ease;
}

@media (hover: hover) {
  .btn--gold:hover {
    box-shadow: 0 8px 24px rgba(201, 163, 92, 0.28);
    transform: translateY(-2px);
  }
}

.btn--gold:active {
  transform: translateY(1px);
}

.btn--dark {
  transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1),
              background-color 0.25s ease,
              box-shadow 0.28s ease;
}

@media (hover: hover) {
  .btn--dark:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.18);
  }
}

.btn--dark:active {
  transform: translateY(1px);
}

.ref-newsletter button {
  transition: transform 0.25s ease, background-color 0.25s ease;
}

.ref-newsletter button:hover {
  transform: scale(1.02);
  filter: brightness(1.08);
}

.ref-newsletter input:focus {
  outline: none;
  box-shadow: 0 0 0 2px var(--memo-gold, #c9a35c);
}

/* 11. Lookbook / Instagram Gallery */
.instagram-strip > div:last-child a {
  position: relative;
  overflow: hidden;
}

.instagram-strip img {
  transition: transform 0.65s cubic-bezier(0.16, 1, 0.3, 1), filter 0.4s ease;
}

@media (hover: hover) {
  .instagram-strip > div:last-child a:hover img {
    transform: scale(1.06);
    filter: brightness(1.04);
  }
}

/* 12. Product Detail Page (PDP) Interactive Micro-motion */
.gallery-image-button {
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.25s ease;
}

.gallery-image-button.is-active {
  border-color: var(--memo-gold, #c9a35c);
  transform: scale(0.98);
}

.choice-row label span {
  transition: transform 0.24s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.24s ease,
              box-shadow 0.24s ease;
}

.choice-row label:hover span {
  transform: translateY(-1px);
}

.choice-row input:checked + span {
  border-color: var(--memo-gold, #c9a35c);
  box-shadow: 0 0 0 1.5px var(--memo-gold, #c9a35c);
}

.quantity-stepper button {
  transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1), background-color 0.2s ease;
}

.quantity-stepper button:active {
  transform: scale(0.85);
}

.mobile-buybar {
  transform: translateY(100%);
  transition: transform 0.38s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.38s ease;
  opacity: 0;
  pointer-events: none;
}

.mobile-buybar.is-visible {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.pdp-accordions details summary {
  transition: color 0.25s ease;
}

.pdp-accordions details summary:hover {
  color: var(--memo-gold, #c9a35c);
}

/* 13. Back to Top Floating Button */
.back-to-top {
  position: fixed;
  bottom: 28px;
  left: 28px;
  z-index: 900;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--ref-line, #e9e5de);
  background: var(--memo-white, #fcfbf8);
  color: var(--memo-text-primary, #111);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
  display: grid;
  place-items: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px) scale(0.88);
  transition: opacity 0.35s ease,
              transform 0.35s cubic-bezier(0.16, 1, 0.3, 1),
              visibility 0.35s,
              background-color 0.25s,
              color 0.25s;
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.back-to-top:hover {
  background: var(--memo-black, #0a0a0a);
  color: var(--memo-gold, #c9a35c);
  transform: translateY(-3px) scale(1.06);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.15);
}

.back-to-top:active {
  transform: translateY(0) scale(0.94);
}

/* 14. Cart Drawer Smooth Reveal */
.cart-drawer {
  transition: transform 0.42s cubic-bezier(0.16, 1, 0.3, 1);
}

.drawer-backdrop {
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

/* 15. Dashboard Low-Motion Enhancements */
body.dashboard-shell .dash-card,
body.dashboard-shell .dash-panel {
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

body.dashboard-shell .dash-sidebar nav a {
  transition: background-color 0.2s ease, color 0.2s ease, padding 0.2s ease;
}

body.dashboard-shell .dash-sidebar nav a:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--memo-gold, #c9a35c);
  padding-inline-start: 16px;
}

/* 16. Reduced Motion Accessibility */
@media (prefers-reduced-motion: reduce) {
  html.motion-capable body::after {
    display: none !important;
  }
  .hero-webgl {
    display: none !important;
  }
  .hero-scroll span,
  .hero-glow,
  .hero-orbit,
  .hero-ribbon i {
    animation: none !important;
  }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .product-card,
  .service-strip > div,
  .category-rail__grid > a {
    transform: none !important;
  }
}