/* ================================
   BUTTONS
   ================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  line-height: 1;
  border-radius: var(--radius-lg);
  transition: all var(--duration-normal) var(--ease-out);
  white-space: nowrap;
  user-select: none;
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: "";
  position: absolute;
  inset: 0;
  background: #ffffff;
  opacity: 0;
  transition: opacity var(--duration-fast);
}

.btn:active::after {
  opacity: 0.15;
}

.btn-primary {
  background: linear-gradient(135deg, #eef2f6, #aeb8c4);
  color: var(--color-neutral-900);
  border: 1px solid rgba(94, 106, 122, 0.28);
  box-shadow: var(--shadow-green);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #f7f9fb, #c0c8d2);
  transform: translateY(-1px);
  box-shadow: 0 18px 44px rgba(36, 42, 50, 0.22);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-green);
}

.btn-secondary {
  background: var(--color-neutral-100);
  color: var(--color-neutral-800);
  box-shadow: var(--shadow-xs);
}

.btn-secondary:hover {
  background: var(--color-neutral-200);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.72);
  color: var(--color-primary-600);
  border: 1.5px solid var(--color-primary-500);
}

.btn-outline:hover {
  background: var(--color-primary-50);
  border-color: var(--color-primary-600);
}

.btn-ghost {
  background: transparent;
  color: var(--color-neutral-600);
}

.btn-ghost:hover {
  background: var(--color-neutral-100);
  color: var(--color-neutral-900);
}

/* Accent CTA */
.btn-accent {
  background: var(--color-accent-500);
  color: #ffffff;
  box-shadow: 0 10px 28px rgba(146, 118, 83, 0.26);
}

.btn-accent:hover {
  background: var(--color-accent-600);
  transform: translateY(-2px);
  box-shadow: 0 16px 38px rgba(146, 118, 83, 0.34);
}

.btn-danger {
  background: var(--color-error);
  color: #ffffff;
}

.btn-danger:hover {
  background: #dc2626;
  transform: translateY(-1px);
}

.btn-xs {
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  border-radius: var(--radius-md);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  border-radius: var(--radius-md);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
  border-radius: var(--radius-xl);
}

.btn-xl {
  padding: var(--space-5) var(--space-10);
  font-size: var(--text-xl);
  border-radius: var(--radius-xl);
}

.btn-full,
.btn-block {
  width: 100%;
}

.btn-icon {
  padding: var(--space-3);
  border-radius: var(--radius-lg);
  aspect-ratio: 1;
}

.btn-loading {
  pointer-events: none;
  opacity: 0.7;
}

.btn-loading::before {
  content: "";
  width: 16px;
  height: 16px;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  margin-right: var(--space-2);
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ================================
   SURFACES
   ================================ */

.card {
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.96), rgba(233, 237, 242, 0.86));
  border: 1px solid rgba(255, 255, 255, 0.82);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(12px);
}

.input {
  width: 100%;
  border: 1px solid var(--color-neutral-300);
  border-radius: var(--radius-lg);
  background: var(--color-neutral-0);
  color: var(--color-neutral-800);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  transition: border-color var(--duration-normal) var(--ease-out);
}

.input:hover {
  border-color: var(--color-neutral-400);
}

.input:focus {
  outline: none;
  border-color: var(--color-primary-500);
  box-shadow: 0 0 0 3px rgba(116, 129, 146, 0.18);
}

.price-row {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
}

.price-now {
  font-size: var(--text-xl);
  font-weight: var(--font-extrabold);
  color: var(--color-neutral-900);
}

.price-old {
  font-size: var(--text-sm);
  color: var(--color-neutral-400);
  text-decoration: line-through;
}

/* ================================
   PRODUCT CARD
   ================================ */

.product-card {
  background: var(--color-neutral-0);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--duration-normal) var(--ease-out);
  position: relative;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--color-neutral-100);
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-primary-200);
}

.product-card__media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--color-neutral-100);
}

.product-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.product-card:hover .product-card__img {
  transform: scale(1.04);
}

.product-card__badges {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  z-index: var(--z-raised);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  letter-spacing: var(--tracking-wide);
  line-height: 1;
  backdrop-filter: blur(8px);
  text-transform: uppercase;
}

.badge-sale {
  background: var(--color-sale);
  color: #ffffff;
}

.badge-hit {
  background: var(--color-hit);
  color: #ffffff;
}

.badge-new {
  background: var(--color-new);
  color: #ffffff;
}

.badge-gift {
  background: var(--color-gift);
  color: #ffffff;
}

.badge-neutral {
  background: rgba(0, 0, 0, 0.55);
  color: #ffffff;
}

.product-card__wishlist {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
  transition: all var(--duration-normal) var(--ease-spring);
  z-index: var(--z-raised);
  opacity: 0;
}

.product-card:hover .product-card__wishlist {
  opacity: 1;
}

.product-card:focus-within .product-card__wishlist,
.product-card__wishlist:focus-visible {
  opacity: 1;
}

.product-card__wishlist:hover {
  transform: scale(1.15);
  background: #ffffff;
}

.product-card__wishlist:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

.product-card__wishlist.is-active svg {
  fill: var(--color-error);
  stroke: var(--color-error);
}

@media (hover: none), (pointer: coarse) {
  .product-card__wishlist {
    opacity: 1;
  }
}

.product-card__dots {
  position: absolute;
  bottom: var(--space-2);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: var(--space-1);
  opacity: 0;
  transition: opacity var(--duration-fast);
}

.product-card:hover .product-card__dots {
  opacity: 1;
}

.product-card__dot {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.6);
  transition: all var(--duration-fast);
}

.product-card__dot.is-active {
  width: 18px;
  background: #ffffff;
}

.product-card__body {
  padding: var(--space-4);
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.product-card__title {
  font-family: "Inter", system-ui, sans-serif;
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--color-neutral-900);
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-tight);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 2.8em;
}

.product-card__specs {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.product-card__spec {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-neutral-500);
}

.product-card__spec-icon {
  width: 14px;
  height: 14px;
  color: var(--color-primary-500);
  flex-shrink: 0;
}

.product-card__price {
  margin-top: auto;
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.price-current {
  font-family: "Inter", system-ui, sans-serif;
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--color-neutral-900);
  letter-spacing: var(--tracking-tight);
}

.price-discount {
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  color: var(--color-sale);
  background: #fef2f2;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
}

.price-from {
  font-size: var(--text-sm);
  color: var(--color-neutral-500);
  margin-right: calc(-1 * var(--space-1));
}

.product-card__footer {
  padding: var(--space-4);
  padding-top: 0;
  display: flex;
  gap: var(--space-2);
}

.product-card__footer .btn {
  flex: 1;
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.product-card__footer .btn:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

.product-card__footer .btn.is-added {
  background: var(--color-primary-700);
  border-color: var(--color-primary-700);
  color: #ffffff;
}

/* ================================
   HEADER
   ================================ */

.header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--color-neutral-100);
  transition: all var(--duration-normal) var(--ease-out);
}

.header.is-scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow-sm);
}

.header__inner {
  height: 100%;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-6);
}

.header__logo {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--font-extrabold);
  color: var(--color-neutral-900);
  letter-spacing: var(--tracking-tight);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.header__logo-accent {
  color: var(--color-primary-500);
}

.header__logo-icon {
  width: 32px;
  height: 32px;
  background: var(--color-primary-500);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.header__nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
}

.nav-link {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-neutral-600);
  border-radius: var(--radius-lg);
  transition: all var(--duration-fast) var(--ease-out);
  position: relative;
}

.nav-link:hover {
  color: var(--color-neutral-900);
  background: var(--color-neutral-100);
}

.nav-link.is-active {
  color: var(--color-primary-600);
  background: var(--color-primary-50);
  font-weight: var(--font-semibold);
}

.nav-link--menu {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-link--menu svg {
  transition: transform var(--duration-fast) var(--ease-out);
}

.nav-link--menu.is-open svg {
  transform: rotate(180deg);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.geo-btn {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-neutral-600);
  border-radius: var(--radius-lg);
  transition: all var(--duration-fast);
  border: 1px solid var(--color-neutral-200);
}

.geo-btn:hover {
  background: var(--color-neutral-100);
  color: var(--color-neutral-900);
}

.icon-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-neutral-600);
  transition: all var(--duration-fast);
  position: relative;
}

.icon-btn:hover {
  background: var(--color-neutral-100);
  color: var(--color-neutral-900);
}

.icon-btn__badge {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 18px;
  height: 18px;
  background: var(--color-primary-500);
  color: #ffffff;
  font-size: 10px;
  font-weight: var(--font-bold);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid #ffffff;
  transform: scale(0);
  transition: transform var(--duration-fast) var(--ease-spring);
}

.icon-btn__badge.has-items {
  transform: scale(1);
}

/* ================================
   MEGAMENU
   ================================ */

.megamenu {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: #ffffff;
  border-bottom: 1px solid var(--color-neutral-100);
  box-shadow: var(--shadow-xl);
  z-index: var(--z-dropdown);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--duration-normal) var(--ease-out);
}

.megamenu.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.megamenu__inner {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-6);
  padding: var(--space-8) 0;
}

.megamenu__title {
  font-size: var(--text-sm);
  font-weight: var(--font-bold);
  color: var(--color-neutral-800);
  margin-bottom: var(--space-2);
}

.megamenu__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.megamenu__link {
  padding: var(--space-1) 0;
  color: var(--color-neutral-600);
  font-size: var(--text-sm);
  transition: color var(--duration-fast) var(--ease-out);
}

.megamenu__link:hover {
  color: var(--color-primary-600);
}

@media (max-width: 1024px) {
  .header__nav {
    display: none;
  }

  .megamenu {
    display: none;
  }
}

@media (max-width: 768px) {
  .geo-btn {
    display: none;
  }

  .header__actions {
    gap: var(--space-1);
  }
}

/* ================================
   HERO STATS
   ================================ */

.hero__stat {
  text-align: center;
}

.hero__stat-num {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: var(--font-extrabold);
  color: #ffffff;
  line-height: 1;
}

.hero__stat-label {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.55);
  margin-top: var(--space-1);
  letter-spacing: var(--tracking-wide);
}

.hero__divider {
  width: 1px;
  height: 40px;
  background: rgba(255, 255, 255, 0.15);
}

/* ================================
   SECTION HEADERS
   ================================ */

.section {
  padding: var(--space-20) 0;
}

.section-sm {
  padding: var(--space-12) 0;
}

.section-lg {
  padding: var(--space-32) 0;
}

.section__header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-6);
  margin-bottom: var(--space-10);
}

.section__label {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-primary-500);
  margin-bottom: var(--space-2);
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(var(--text-2xl), 3vw, var(--text-3xl));
  font-weight: var(--font-bold);
  color: var(--color-neutral-900);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
}

.section__subtitle {
  font-size: var(--text-base);
  color: var(--color-neutral-500);
  margin-top: var(--space-3);
  max-width: 480px;
  line-height: var(--leading-relaxed);
}

/* ================================
   CATALOG FILTERS
   ================================ */

.filter-bar {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2);
  background: var(--color-neutral-100);
  border-radius: var(--radius-xl);
  overflow-x: auto;
  scrollbar-width: none;
}

.filter-bar::-webkit-scrollbar {
  display: none;
}

.filter-pill {
  flex-shrink: 0;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-neutral-600);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.filter-pill:hover {
  background: #ffffff;
  color: var(--color-neutral-900);
  box-shadow: var(--shadow-sm);
}

.filter-pill.is-active {
  background: #ffffff;
  color: var(--color-primary-600);
  font-weight: var(--font-semibold);
  box-shadow: var(--shadow-sm);
}

.filter-pill__count {
  font-size: var(--text-xs);
  background: var(--color-primary-100);
  color: var(--color-primary-600);
  padding: 2px 6px;
  border-radius: var(--radius-full);
}

/* ================================
   PRODUCTS GRID
   ================================ */

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-6);
}

@media (max-width: 640px) {
  .products-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
}

.product-card--skeleton .product-card__media,
.product-card--skeleton .product-card__title,
.product-card--skeleton .product-card__spec,
.product-card--skeleton .price-current {
  background: linear-gradient(
    90deg,
    var(--color-neutral-100) 25%,
    var(--color-neutral-200) 50%,
    var(--color-neutral-100) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
  color: transparent;
}