/**
 * Mini Cart Drawer - Styles
 * 
 * Slide-out cart component matching portal design system.
 * Based on KNX cart drawer but styled for Silva Customer Portal.
 * 
 * @package Silva_Customer_Portal
 * @version 2.2.1
 */

/* ============================================
   CART DRAWER CONTAINER
   ============================================ */

.portal-cart-drawer {
    position: fixed;
    top: var(--portal-header-height, 120px);
    right: -420px; /* Hidden off-screen by default */
    width: 380px;
    max-width: 100%;
    height: calc(100vh - var(--portal-header-height, 120px));
    background-color: var(--bg-white, #ffffff);
    box-shadow: -4px 0 24px rgba(0, 0, 0, 0.15);
    z-index: var(--z-cart-drawer, 1400); /* Above portal modals */
    display: flex;
    flex-direction: column;
    transition: right 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.portal-cart-drawer.is-open {
    right: 0; /* Slide in from right */
}

/* Mobile: Full width slide-in */
@media (max-width: 768px) {
    .portal-cart-drawer {
        width: 100%;
        max-width: 420px;
        right: -100%;
    }
    
    .portal-cart-drawer.is-open {
        right: 0;
    }
}

/* ============================================
   BACKDROP OVERLAY
   ============================================ */

.portal-cart-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: var(--z-cart-backdrop, 1399); /* Just below drawer */
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.28s ease, visibility 0.28s ease;
}

.portal-cart-backdrop.is-visible {
    opacity: 1;
    visibility: visible;
}

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

.portal-cart-drawer__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg, 24px) var(--spacing-md, 16px);
    border-bottom: 1px solid var(--border-color, #e5e7eb);
    background: var(--bg-gray, #f9fafb);
    flex-shrink: 0;
}

.portal-cart-drawer__title {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0;
    font-size: var(--font-size-lg, 18px);
    font-weight: var(--font-weight-semibold, 600);
    color: var(--text-primary, #1f2937);
}

.portal-cart-drawer__title svg {
    color: var(--primary-blue, #014385);
}

.portal-cart-drawer__close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    border: none;
    border-radius: var(--radius-lg, 8px);
    background: transparent;
    color: var(--text-secondary, #6b7280);
    cursor: pointer;
    transition: all 0.2s ease;
}

.portal-cart-drawer__close:hover {
    background: var(--bg-white, #ffffff);
    color: var(--text-primary, #1f2937);
}

.portal-cart-drawer__close:focus {
    outline: 2px solid var(--primary-blue, #014385);
    outline-offset: 2px;
}

/* ============================================
   DRAWER BODY (SCROLLABLE ITEMS)
   ============================================ */

.portal-cart-drawer__body {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: var(--spacing-md, 16px);
    -webkit-overflow-scrolling: touch;
}

.portal-cart-drawer__body::-webkit-scrollbar {
    width: 8px;
}

.portal-cart-drawer__body::-webkit-scrollbar-track {
    background: var(--bg-gray, #f9fafb);
}

.portal-cart-drawer__body::-webkit-scrollbar-thumb {
    background: var(--border-color, #e5e7eb);
    border-radius: 4px;
}

.portal-cart-drawer__body::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary, #6b7280);
}

/* ============================================
   EMPTY & LOADING STATES
   ============================================ */

.portal-cart-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-2xl, 48px) var(--spacing-lg, 24px);
    min-height: 300px;
}

.portal-cart-empty svg {
    color: var(--text-tertiary, #6b7280);
    margin-bottom: var(--spacing-md, 16px);
    opacity: 0.5;
}

.portal-cart-empty h4 {
    margin: 0 0 var(--spacing-xs, 8px) 0;
    font-size: var(--font-size-lg, 18px);
    font-weight: var(--font-weight-semibold, 600);
    color: var(--text-primary, #1f2937);
}

.portal-cart-empty p {
    margin: 0;
    font-size: var(--font-size-sm, 14px);
    color: var(--text-secondary, #6b7280);
    max-width: 280px;
    line-height: var(--line-height-normal, 1.5);
}

.portal-cart-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl, 48px);
    min-height: 200px;
}

.portal-cart-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--bg-gray, #f9fafb);
    border-top-color: var(--primary-blue, #014385);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.portal-cart-loading p {
    margin-top: var(--spacing-md, 16px);
    font-size: var(--font-size-sm, 14px);
    color: var(--text-secondary, #6b7280);
}

/* ============================================
   CART ITEM CARDS
   ============================================ */

.portal-cart-item {
    display: flex;
    gap: var(--spacing-sm, 12px);
    padding: var(--spacing-md, 16px);
    margin-bottom: var(--spacing-sm, 12px);
    border: 1px solid var(--border-color, #e5e7eb);
    border-radius: var(--radius-lg, 8px);
    background: var(--bg-white, #ffffff);
    transition: box-shadow 0.2s ease;
}

.portal-cart-item:hover {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.portal-cart-item__image {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    border-radius: var(--radius-md, 6px);
    object-fit: cover;
    background: var(--bg-gray, #f9fafb);
}

.portal-cart-item__details {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs, 8px);
    min-width: 0;
}

.portal-cart-item__name {
    margin: 0;
    font-size: var(--font-size-base, 16px);
    font-weight: var(--font-weight-semibold, 600);
    color: var(--text-primary, #1f2937);
    line-height: var(--line-height-tight, 1.25);
}

.portal-cart-item__modifiers {
    font-size: var(--font-size-sm, 14px);
    color: var(--text-secondary, #6b7280);
    line-height: var(--line-height-normal, 1.5);
}

.portal-cart-item__modifier {
    display: block;
}

.portal-cart-item__price {
    font-size: var(--font-size-lg, 18px);
    font-weight: var(--font-weight-bold, 700);
    color: var(--primary-blue, #014385);
}

/* ============================================
   QUANTITY CONTROLS
   ============================================ */

.portal-cart-item__actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm, 12px);
    margin-top: auto;
}

.portal-cart-item__qty-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs, 8px);
    padding: 4px;
    border: 1px solid var(--border-color, #e5e7eb);
    border-radius: var(--radius-md, 6px);
    background: var(--bg-gray, #f9fafb);
}

.portal-cart-item__qty-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    padding: 0;
    border: none;
    border-radius: var(--radius-sm, 4px);
    background: var(--bg-white, #ffffff);
    color: var(--text-primary, #1f2937);
    font-size: var(--font-size-lg, 18px);
    font-weight: var(--font-weight-semibold, 600);
    cursor: pointer;
    transition: all 0.2s ease;
}

.portal-cart-item__qty-btn:hover {
    background: var(--primary-blue, #014385);
    color: #ffffff;
}

.portal-cart-item__qty-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.portal-cart-item__qty {
    min-width: 32px;
    text-align: center;
    font-size: var(--font-size-base, 16px);
    font-weight: var(--font-weight-medium, 500);
    color: var(--text-primary, #1f2937);
}

.portal-cart-item__remove {
    padding: 6px 12px;
    border: none;
    border-radius: var(--radius-md, 6px);
    background: transparent;
    color: var(--danger-red, #dc2626);
    font-size: var(--font-size-sm, 14px);
    font-weight: var(--font-weight-medium, 500);
    cursor: pointer;
    transition: all 0.2s ease;
}

.portal-cart-item__remove:hover {
    background: var(--danger-light, #fee2e2);
}

/* ============================================
   DRAWER FOOTER
   ============================================ */

.portal-cart-drawer__footer {
    padding: var(--spacing-lg, 24px) var(--spacing-md, 16px);
    border-top: 1px solid var(--border-color, #e5e7eb);
    background: var(--bg-gray, #f9fafb);
    flex-shrink: 0;
}

.portal-cart-drawer__subtotal,
.portal-cart-drawer__tax-estimate,
.portal-cart-drawer__total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm, 12px);
}

.portal-cart-drawer__subtotal-label,
.portal-cart-drawer__tax-label,
.portal-cart-drawer__total-label {
    font-size: var(--font-size-base, 16px);
    color: var(--text-secondary, #6b7280);
}

.portal-cart-drawer__subtotal-amount {
    font-size: var(--font-size-lg, 18px);
    font-weight: var(--font-weight-semibold, 600);
    color: var(--text-primary, #1f2937);
}

.portal-cart-drawer__tax-estimate {
    padding-bottom: var(--spacing-sm, 12px);
    border-bottom: 1px solid var(--border-color, #e5e7eb);
}

.portal-cart-drawer__tax-amount {
    font-size: var(--font-size-base, 16px);
    color: var(--text-secondary, #6b7280);
}

.portal-cart-drawer__total {
    padding-top: var(--spacing-sm, 12px);
    margin-bottom: var(--spacing-md, 16px);
}

.portal-cart-drawer__total-label {
    font-size: var(--font-size-lg, 18px);
    font-weight: var(--font-weight-semibold, 600);
    color: var(--text-primary, #1f2937);
}

.portal-cart-drawer__total-amount {
    font-size: var(--font-size-2xl, 24px);
    font-weight: var(--font-weight-bold, 700);
    color: var(--primary-blue, #014385);
}

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

.portal-cart-drawer__actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm, 12px);
    margin-bottom: var(--spacing-md, 16px);
}

.portal-cart-drawer__view-cart {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border: 2px solid var(--primary-blue, #014385);
    border-radius: var(--radius-lg, 8px);
    background: transparent;
    color: var(--primary-blue, #014385);
    font-size: var(--font-size-base, 16px);
    font-weight: var(--font-weight-semibold, 600);
    text-decoration: none;
    transition: all 0.2s ease;
}

.portal-cart-drawer__view-cart:hover {
    background: var(--primary-blue, #014385);
    color: #ffffff;
}

.portal-cart-drawer__checkout {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 24px;
    border: none;
    border-radius: var(--radius-lg, 8px);
    background: var(--primary-blue, #014385);
    color: #ffffff;
    font-size: var(--font-size-base, 16px);
    font-weight: var(--font-weight-semibold, 600);
    text-decoration: none;
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px rgba(1, 67, 133, 0.2);
}

.portal-cart-drawer__checkout:hover {
    background: var(--primary-blue-dark, #012951);
    box-shadow: 0 4px 8px rgba(1, 67, 133, 0.3);
    transform: translateY(-1px);
}

.portal-cart-drawer__checkout svg {
    transition: transform 0.2s ease;
}

.portal-cart-drawer__checkout:hover svg {
    transform: translateX(3px);
}

.portal-cart-drawer__note {
    margin: 0;
    font-size: var(--font-size-xs, 12px);
    color: var(--text-tertiary, #6b7280);
    text-align: center;
    line-height: var(--line-height-normal, 1.5);
}

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

/* Focus indicators */
.portal-cart-drawer button:focus,
.portal-cart-drawer a:focus {
    outline: 2px solid var(--primary-blue, #014385);
    outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .portal-cart-drawer,
    .portal-cart-backdrop {
        transition: none;
    }
    
    .portal-cart-spinner {
        animation: none;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    .portal-cart-drawer {
        border-left: 2px solid currentColor;
    }
    
    .portal-cart-item {
        border-width: 2px;
    }
}