/* =============================================
   SLICKFOOTIES — Shared Components
   ============================================= */

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  padding: 0 var(--space-xl);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.nav.scrolled {
  border-bottom-color: var(--border-gray);
  box-shadow: var(--shadow-sm);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-xl);
  letter-spacing: -0.03em;
  color: var(--charcoal-black);
}

.nav__logo-img {
  height: 54px;
  width: auto;
  object-fit: contain;
}

.nav__logo-icon {
  width: 32px;
  height: 32px;
  background: var(--charcoal-black);
  color: var(--pure-white);
  border-radius: var(--border-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: var(--text-sm);
}

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

.nav__link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.02em;
  position: relative;
  padding: var(--space-xs) 0;
  transition: color var(--transition-fast);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--charcoal-black);
  transition: width var(--transition-base);
}

.nav__link:hover,
.nav__link.active {
  color: var(--charcoal-black);
}

.nav__link:hover::after,
.nav__link.active::after {
  width: 100%;
}

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

.nav__action-btn {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius-full);
  transition: background var(--transition-fast);
  color: var(--charcoal-black);
}

.nav__action-btn:hover {
  background: var(--light-gray);
}

.nav__action-btn svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.8;
}

.nav__cart-badge {
  position: absolute;
  top: 2px;
  right: 2px;
  width: 18px;
  height: 18px;
  background: var(--charcoal-black);
  color: var(--pure-white);
  font-size: 10px;
  font-weight: 700;
  border-radius: var(--border-radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  opacity: 0;
  transform: scale(0);
  transition: opacity var(--transition-fast), transform var(--transition-spring);
}

.nav__cart-badge.visible {
  opacity: 1;
  transform: scale(1);
}

.nav__cart-badge.bounce {
  animation: badge-bounce 0.4s ease;
}

@keyframes badge-bounce {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.3); }
}

/* Mobile hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 24px;
  cursor: pointer;
  padding: var(--space-sm);
}

.nav__hamburger span {
  display: block;
  height: 2px;
  background: var(--charcoal-black);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-fast);
}

.nav__hamburger.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav__hamburger.open span:nth-child(2) {
  opacity: 0;
}

.nav__hamburger.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile menu overlay */
.nav__mobile-menu {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  height: calc(100vh - var(--nav-height));
  background: var(--pure-white);
  padding: var(--space-2xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-10px);
  transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
}

.nav__mobile-menu.open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

.nav__mobile-link {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--charcoal-black);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--border-gray);
}

@media (max-width: 768px) {
  .nav__links { display: none; }
  .nav__hamburger { display: flex; }
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 14px 28px;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--border-radius-full);
  transition: all var(--transition-base);
  white-space: nowrap;
  cursor: pointer;
  border: none;
}

.btn--primary {
  background: var(--charcoal-black);
  color: var(--pure-white);
}

.btn--primary:hover {
  background: #2a2a2a;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--accent {
  background: var(--earthy-brown);
  color: var(--charcoal-black);
}

.btn--accent:hover {
  background: var(--earthy-brown-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--outline {
  background: transparent;
  color: var(--charcoal-black);
  border: 1.5px solid var(--charcoal-black);
}

.btn--outline:hover {
  background: var(--charcoal-black);
  color: var(--pure-white);
}

.btn--white {
  background: var(--pure-white);
  color: var(--charcoal-black);
}

.btn--white:hover {
  background: var(--cream-white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--sm {
  padding: 10px 20px;
  font-size: var(--text-xs);
}

.btn--lg {
  padding: 18px 36px;
  font-size: var(--text-base);
}

.btn--icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: var(--border-radius-full);
}

.btn svg {
  width: 16px;
  height: 16px;
}

/* --- Product Card --- */
.product-card {
  position: relative;
  display: flex;
  flex-direction: column;
  border-radius: var(--border-radius-md);
  overflow: hidden;
  background: var(--pure-white);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.product-card__image-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  background: var(--light-gray);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-card__image {
  width: 80%;
  height: 80%;
  object-fit: contain;
  transition: transform var(--transition-slow);
}

.product-card:hover .product-card__image {
  transform: scale(1.05);
}

.product-card__quick-add {
  position: absolute;
  bottom: 12px;
  left: 12px;
  right: 12px;
  padding: 12px;
  background: var(--charcoal-black);
  color: var(--pure-white);
  border-radius: var(--border-radius-sm);
  font-size: var(--text-sm);
  font-weight: 600;
  text-align: center;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity var(--transition-base), transform var(--transition-base);
  cursor: pointer;
  border: none;
}

.product-card:hover .product-card__quick-add {
  opacity: 1;
  transform: translateY(0);
}

.product-card__info {
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.product-card__name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--charcoal-black);
}

.product-card__tagline {
  font-size: var(--text-xs);
  color: var(--text-muted);
  line-height: 1.4;
}

.product-card__price {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-xs);
}

.product-card__price-label {
  font-size: var(--text-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.product-card__price-value {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-base);
}

/* --- Form Inputs --- */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--charcoal-black);
}

.form-input {
  width: 100%;
  padding: 14px 16px;
  border: 1.5px solid var(--border-gray);
  border-radius: var(--border-radius-sm);
  font-size: var(--text-sm);
  color: var(--charcoal-black);
  background: var(--pure-white);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus {
  border-color: var(--charcoal-black);
  box-shadow: 0 0 0 3px rgba(14, 14, 14, 0.08);
}

.form-input::placeholder {
  color: var(--cool-ash-gray);
}

.form-input--error {
  border-color: var(--danger);
}

.form-error {
  font-size: var(--text-xs);
  color: var(--danger);
  margin-top: 2px;
}

textarea.form-input {
  resize: vertical;
  min-height: 120px;
}

select.form-input {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236B6B6B' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
}

/* --- Size Chip --- */
.size-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 48px;
  height: 44px;
  padding: 0 12px;
  border: 1.5px solid var(--border-gray);
  border-radius: var(--border-radius-sm);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--charcoal-black);
  cursor: pointer;
  transition: all var(--transition-fast);
  background: var(--pure-white);
}

.size-chip:hover {
  border-color: var(--charcoal-black);
}

.size-chip.selected {
  background: var(--charcoal-black);
  color: var(--pure-white);
  border-color: var(--charcoal-black);
}

.size-chip.disabled {
  opacity: 0.35;
  cursor: not-allowed;
  text-decoration: line-through;
}

/* --- Color Swatch --- */
.color-swatch {
  width: 32px;
  height: 32px;
  border-radius: var(--border-radius-full);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

.color-swatch:hover {
  transform: scale(1.1);
}

.color-swatch.selected {
  border-color: var(--charcoal-black);
  box-shadow: 0 0 0 2px var(--pure-white), 0 0 0 4px var(--charcoal-black);
}

/* --- Rating Stars --- */
.rating {
  display: flex;
  align-items: center;
  gap: 2px;
}

.rating__star {
  color: var(--earthy-brown);
  font-size: var(--text-sm);
}

.rating__count {
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-left: var(--space-xs);
}

/* --- Badge --- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-radius: var(--border-radius-full);
}

.badge--dark {
  background: var(--charcoal-black);
  color: var(--pure-white);
}

.badge--accent {
  background: var(--earthy-brown);
  color: var(--charcoal-black);
}

/* --- Quantity Stepper --- */
.qty-stepper {
  display: inline-flex;
  align-items: center;
  border: 1.5px solid var(--border-gray);
  border-radius: var(--border-radius-sm);
  overflow: hidden;
}

.qty-stepper__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  font-size: var(--text-lg);
  color: var(--charcoal-black);
  transition: background var(--transition-fast);
}

.qty-stepper__btn:hover {
  background: var(--light-gray);
}

.qty-stepper__value {
  width: 48px;
  height: 40px;
  text-align: center;
  font-weight: 600;
  font-size: var(--text-sm);
  border-left: 1.5px solid var(--border-gray);
  border-right: 1.5px solid var(--border-gray);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* --- Tabs --- */
.tabs {
  display: flex;
  gap: 0;
  border-bottom: 1.5px solid var(--border-gray);
  margin-bottom: var(--space-xl);
}

.tab {
  padding: var(--space-md) var(--space-xl);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-bottom: -1.5px;
}

.tab:hover {
  color: var(--charcoal-black);
}

.tab.active {
  color: var(--charcoal-black);
  border-bottom-color: var(--charcoal-black);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

/* --- Footer --- */
.footer {
  background: var(--charcoal-black);
  color: var(--pure-white);
  padding: var(--space-4xl) 0 var(--space-xl);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}

.footer__brand-name {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 800;
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.footer__logo-img {
  height: 32px;
  width: auto;
  object-fit: contain;
  filter: invert(1);
}

.footer__brand-desc {
  font-size: var(--text-sm);
  color: var(--cool-ash-gray);
  line-height: 1.7;
  max-width: 320px;
}

.footer__heading {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-lg);
  color: var(--soft-offwhite);
}

.footer__link {
  display: block;
  font-size: var(--text-sm);
  color: var(--cool-ash-gray);
  padding: var(--space-xs) 0;
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--pure-white);
}

.footer__newsletter-text {
  font-size: var(--text-sm);
  color: var(--cool-ash-gray);
  margin-bottom: var(--space-md);
  line-height: 1.6;
}

.footer__newsletter-form {
  display: flex;
  gap: var(--space-sm);
}

.footer__newsletter-input {
  flex: 1;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--border-radius-sm);
  color: var(--pure-white);
  font-size: var(--text-sm);
  transition: border-color var(--transition-fast);
}

.footer__newsletter-input:focus {
  border-color: var(--earthy-brown);
  outline: none;
}

.footer__newsletter-input::placeholder {
  color: var(--cool-ash-gray);
}

.footer__divider {
  height: 1px;
  background: rgba(255, 255, 255, 0.1);
  margin-bottom: var(--space-xl);
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer__copyright {
  font-size: var(--text-xs);
  color: var(--cool-ash-gray);
}

.footer__socials {
  display: flex;
  gap: var(--space-md);
}

.footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--border-radius-full);
  background: rgba(255, 255, 255, 0.08);
  color: var(--cool-ash-gray);
  transition: all var(--transition-fast);
}

.footer__social-link:hover {
  background: var(--earthy-brown);
  color: var(--charcoal-black);
}

.footer__social-link svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

@media (max-width: 1024px) {
  .footer__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .footer__bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }

  .footer__newsletter-form {
    flex-direction: column;
  }
}

/* --- Toast Notification --- */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 16px 24px;
  background: var(--charcoal-black);
  color: var(--pure-white);
  border-radius: var(--border-radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  box-shadow: var(--shadow-xl);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  z-index: 10000;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-base), transform var(--transition-base);
  pointer-events: none;
}

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

.toast__icon {
  width: 20px;
  height: 20px;
  fill: var(--success);
}

/* --- Page spacer for fixed nav --- */
.page-spacer {
  height: var(--nav-height);
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-xl);
}

.breadcrumb__sep {
  color: var(--cool-ash-gray);
}

.breadcrumb a:hover {
  color: var(--charcoal-black);
}

/* --- Empty State --- */
.empty-state {
  text-align: center;
  padding: var(--space-5xl) var(--space-xl);
}

.empty-state__icon {
  font-size: 64px;
  margin-bottom: var(--space-lg);
  opacity: 0.4;
}

.empty-state__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.empty-state__text {
  color: var(--text-muted);
  margin-bottom: var(--space-xl);
}