/**
 * Shopping Cart Styles
 * Shopify-style floating cart tab and overlay panel
 */

/* ============================================
   ADD TO CART BUTTON (for product pages)
   ============================================ */

.add-to-cart-btn {
  transition: all 0.3s ease;
}

.add-to-cart-btn:hover {
  background: linear-gradient(135deg, #764ba2 0%, #667eea 100%) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 6px 16px rgba(102, 126, 234, 0.6) !important;
}

.add-to-cart-btn:active {
  transform: translateY(0) !important;
}

.add-to-cart-btn:focus {
  outline: 2px solid #667eea;
  outline-offset: 2px;
}

/* ============================================
   FLOATING CART TAB (appears on right side)
   ============================================ */

.biotech-cart-tab {
  position: fixed;
  top: 50%;
  right: 0;
  transform: translateY(-50%);
  z-index: 9998;
  transition: all 0.3s ease;
  display: none; /* Hidden until items added */
}

.biotech-cart-tab button {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 12px 8px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border: none;
  border-radius: 8px 0 0 8px;
  cursor: pointer;
  box-shadow: -2px 2px 12px rgba(0, 0, 0, 0.3);
  transition: all 0.3s ease;
  position: relative;
  min-width: 60px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
}

.biotech-cart-tab button:hover {
  background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
  padding-right: 12px;
  box-shadow: -4px 4px 16px rgba(0, 0, 0, 0.4);
}

.biotech-cart-tab button:active {
  transform: scale(0.95);
}

.biotech-cart-badge {
  position: absolute;
  top: 6px;
  right: 6px;
  background: #ff4757;
  color: white;
  border-radius: 50%;
  min-width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: bold;
  border: 2px solid white;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.biotech-cart-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ============================================
   CART OVERLAY & PANEL
   ============================================ */

.biotech-cart-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 9999;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  backdrop-filter: blur(2px);
}

.biotech-cart-overlay.biotech-cart-open {
  opacity: 1;
  visibility: visible;
}

.biotech-cart-panel {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  max-width: 450px;
  background: #1a1e24;
  box-shadow: -4px 0 24px rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  color: #d6e0f5;
}

.biotech-cart-overlay.biotech-cart-open .biotech-cart-panel {
  transform: translateX(0);
}

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

.biotech-cart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 2px solid #2a3342;
  background: linear-gradient(135deg, #667eea15 0%, #764ba215 100%);
}

.biotech-cart-header h2 {
  margin: 0;
  font-size: 24px;
  font-weight: 700;
  color: #ffffff;
}

/* ============================================
   CART ITEMS AREA
   ============================================ */

.biotech-cart-items {
  flex: 1;
  overflow-y: auto;
  padding: 16px 24px;
  background: #242a33;
}

.biotech-cart-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  min-height: 200px;
  color: #8892a6;
  font-size: 16px;
}

.biotech-cart-item {
  display: flex;
  gap: 16px;
  padding: 16px;
  margin-bottom: 16px;
  background: #1a1e24;
  border: 1px solid #2a3342;
  border-radius: 8px;
  transition: all 0.2s ease;
}

.biotech-cart-item:hover {
  border-color: #667eea;
  box-shadow: 0 2px 8px rgba(102, 126, 234, 0.2);
}

.biotech-cart-item-image {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: 6px;
  background: #2a3342;
}

.biotech-cart-item-details {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.biotech-cart-item-details h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  color: #ffffff;
}

.biotech-cart-item-variant {
  margin: 0;
  font-size: 13px;
  color: #8892a6;
}

.biotech-cart-item-price {
  margin: 0;
  font-size: 14px;
  color: #d6e0f5;
  font-weight: 500;
}

.biotech-cart-stock-warning {
  margin: 4px 0 0 0;
  font-size: 12px;
  color: #ffa502;
  font-weight: 600;
  font-style: italic;
}

.biotech-cart-item-quantity {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
}

.biotech-qty-btn {
  width: 28px;
  height: 28px;
  border: 1px solid #2a3342;
  background: #242a33;
  color: #d6e0f5;
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: bold;
  transition: all 0.2s ease;
}

.biotech-qty-btn:hover {
  background: #667eea;
  border-color: #667eea;
  color: white;
}

.biotech-qty-btn:active {
  transform: scale(0.9);
}

.biotech-qty-btn:disabled {
  background: #1a1f28;
  border-color: #1a1f28;
  color: #4a5568;
  cursor: not-allowed;
  opacity: 0.5;
}

.biotech-qty-btn:disabled:hover {
  background: #1a1f28;
  border-color: #1a1f28;
  color: #4a5568;
  transform: none;
}

.biotech-qty-input {
  width: 50px;
  height: 28px;
  text-align: center;
  border: 1px solid #2a3342;
  background: #242a33;
  color: #d6e0f5;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 600;
  -moz-appearance: textfield; /* Remove spinner in Firefox */
}

.biotech-qty-input:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.2);
}

/* Remove spinner arrows from number input (Chrome, Safari, Edge) */
.biotech-qty-input::-webkit-inner-spin-button,
.biotech-qty-input::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.biotech-cart-item-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  justify-content: space-between;
}

.biotech-cart-item-total {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: #667eea;
}

.biotech-cart-remove {
  background: transparent;
  border: 1px solid #ff4757;
  color: #ff4757;
  cursor: pointer;
  padding: 6px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.biotech-cart-remove:hover {
  background: #ff4757;
  color: white;
}

.biotech-cart-remove:active {
  transform: scale(0.9);
}

/* ============================================
   CART FOOTER
   ============================================ */

.biotech-cart-footer {
  padding: 24px;
  border-top: 2px solid #2a3342;
  background: #1a1e24;
}

.biotech-cart-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  font-size: 20px;
  font-weight: 700;
  color: #ffffff;
}

.biotech-cart-shipping-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding: 10px 12px;
  background: rgba(102, 126, 234, 0.1);
  border-radius: 6px;
  font-size: 14px;
  color: #d6e0f5;
  border: 1px solid rgba(102, 126, 234, 0.2);
}

#biotech-cart-total-amount {
  color: #667eea;
  font-size: 24px;
}

.biotech-cart-checkout-btn {
  width: 100%;
  padding: 16px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s ease;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.biotech-cart-checkout-btn:hover {
  background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
  box-shadow: 0 6px 16px rgba(102, 126, 234, 0.6);
  transform: translateY(-2px);
}

.biotech-cart-checkout-btn:active {
  transform: translateY(0);
}

.biotech-cart-clear-btn {
  width: 100%;
  padding: 12px;
  background: transparent;
  color: #8892a6;
  border: 1px solid #2a3342;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  margin-top: 12px;
}

.biotech-cart-clear-btn:hover {
  background: rgba(255, 71, 87, 0.1);
  border-color: #ff4757;
  color: #ff4757;
}

.biotech-cart-continue-btn {
  width: 100%;
  padding: 12px;
  background: transparent;
  color: #667eea;
  border: 1px solid #667eea;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  margin-top: 12px;
}

.biotech-cart-continue-btn:hover {
  background: rgba(102, 126, 234, 0.1);
  border-color: #764ba2;
  color: #764ba2;
}

/* ============================================
   NOTIFICATION (Toast)
   ============================================ */

.biotech-cart-notification {
  position: fixed;
  top: 24px;
  right: 24px;
  background: #667eea;
  color: white;
  padding: 16px 24px;
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
  z-index: 10000;
  transform: translateX(400px);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  font-weight: 600;
  max-width: 350px;
}

.biotech-cart-notification.biotech-cart-notification-show {
  transform: translateX(0);
  opacity: 1;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 768px) {
  .biotech-cart-panel {
    max-width: 100%;
  }

  .biotech-cart-header {
    padding: 16px 20px;
  }

  .biotech-cart-items {
    padding: 12px 20px;
  }

  .biotech-cart-footer {
    padding: 20px;
  }

  .biotech-cart-item {
    padding: 12px;
  }

  .biotech-cart-item-image {
    width: 60px;
    height: 60px;
  }

  .biotech-cart-notification {
    right: 12px;
    top: 12px;
    max-width: calc(100% - 24px);
  }
}

/* ============================================
   SCROLLBAR STYLING
   ============================================ */

.biotech-cart-items::-webkit-scrollbar {
  width: 8px;
}

.biotech-cart-items::-webkit-scrollbar-track {
  background: #1a1e24;
}

.biotech-cart-items::-webkit-scrollbar-thumb {
  background: #667eea;
  border-radius: 4px;
}

.biotech-cart-items::-webkit-scrollbar-thumb:hover {
  background: #764ba2;
}

/* ============================================
   ANIMATIONS
   ============================================ */

@keyframes slideInFromRight {
  from {
    transform: translateX(100%);
  }
  to {
    transform: translateX(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */

.biotech-cart-tab button:focus,
.biotech-qty-btn:focus,
.biotech-cart-remove:focus,
.biotech-cart-checkout-btn:focus,
.biotech-cart-clear-btn:focus,
.biotech-cart-continue-btn:focus {
  outline: 2px solid #667eea;
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .biotech-cart-item {
    border-width: 2px;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  .biotech-cart-tab,
  .biotech-cart-overlay,
  .biotech-cart-panel,
  .biotech-cart-notification,
  .biotech-cart-item,
  .biotech-qty-btn,
  .biotech-cart-remove,
  .biotech-cart-checkout-btn {
    transition: none;
  }
}