/* ========================================
   Shopping Drawer Styles
   ======================================== */

/* Screen Reader Only Content */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Smooth Animations */
@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOutRight {
    from {
        transform: translateX(0);
        opacity: 1;
    }

    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

@keyframes slideOutLeft {
    from {
        transform: translateX(0);
        opacity: 1;
    }

    to {
        transform: translateX(-100px);
        opacity: 0;
    }
}

@keyframes pulseHighlight {
    0% {
        background-color: #E3F2FD;
    }

    100% {
        background-color: transparent;
    }
}

/* Overlay Backdrop */
.terra-shopping-drawer__overlay {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100vh;
    height: 100dvh;
    background-color: rgba(0, 0, 0, 0.4);
    z-index: calc(var(--z-modal) - 1);
    opacity: 0;
    pointer-events: none;
    display: none;
    /* Smooth fade transition - JavaScript applies opacity values */
    transition: opacity 250ms ease-out;
}

/* Drawer Container */
.terra-shopping-drawer {
    position: fixed;
    inset: 0 0 0 auto;
    width: 400px;
    height: 100vh;
    height: 100dvh;
    max-height: 100dvh;
    background-color: var(--terra-white);
    z-index: var(--z-modal);
    display: none;
    flex-direction: column;
    box-shadow: -4px 0 16px rgba(0, 0, 0, 0.1);
    /* GPU acceleration for smooth animations */
    transform: translateZ(0);
    backface-visibility: hidden;
    -webkit-font-smoothing: antialiased;
    /* CRITICAL: Smooth transitions for transform and opacity - JavaScript applies the values */
    transition: transform 250ms cubic-bezier(0.4, 0, 0.2, 1),
        opacity 250ms cubic-bezier(0.4, 0, 0.2, 1);
    /* Default hidden state - JavaScript will set final values */
    transform: translateX(100%);
    opacity: 0;
}

/* Header */
.terra-shopping-drawer__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4);
    border-bottom: 1px solid var(--terra-gray-200);
    flex-shrink: 0;
    height: 60px;
    gap: var(--space-4);
}

.terra-shopping-drawer__title {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--terra-black);
    margin: 0;
    flex: 1;
}

.terra-shopping-drawer__header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.terra-shopping-drawer__count {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--terra-black);
    min-width: 30px;
    text-align: right;
}

.terra-shopping-drawer__close {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    color: var(--terra-gray-600);
    transition: color var(--transition-fast);
}

.terra-shopping-drawer__close:hover {
    color: var(--terra-black);
}

.terra-shopping-drawer__close:focus {
    outline: 2px solid var(--terra-green-dark);
    outline-offset: 2px;
}

.terra-shopping-drawer__close svg {
    width: 24px;
    height: 24px;
}

/* Items Container */
.terra-shopping-drawer__items {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-4);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.terra-shopping-drawer__items::-webkit-scrollbar {
    width: 6px;
}

.terra-shopping-drawer__items::-webkit-scrollbar-track {
    background: transparent;
}

.terra-shopping-drawer__items::-webkit-scrollbar-thumb {
    background-color: var(--terra-gray-300);
    border-radius: 3px;
}

.terra-shopping-drawer__items::-webkit-scrollbar-thumb:hover {
    background-color: var(--terra-gray-400);
}

/* Cart Item */
.terra-shopping-drawer__item {
    display: flex;
    gap: var(--space-3);
    padding: var(--space-4);
    border: 1px solid var(--terra-gray-200);
    border-radius: 8px;
    background-color: var(--terra-white);
    transition: all var(--transition-fast);
}

.terra-shopping-drawer__item:hover {
    box-shadow: var(--shadow-sm);
}

.terra-shopping-drawer__item-image {
    width: 60px;
    height: 60px;
    flex-shrink: 0;
    border-radius: 6px;
    overflow: hidden;
    background-color: var(--terra-gray-100);
}

.terra-shopping-drawer__item-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.terra-shopping-drawer__item-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    min-width: 0;
}

.terra-shopping-drawer__item-header {
    display: flex;
    justify-content: space-between;
    gap: var(--space-2);
    align-items: flex-start;
}

.terra-shopping-drawer__item-name {
    font-size: var(--text-sm);
    font-weight: var(--font-normal);
    color: var(--terra-black);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1;
    margin: 0;
}

.terra-shopping-drawer__item-price {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--terra-black);
    white-space: nowrap;
}

.terra-shopping-drawer__item-remove {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    color: var(--terra-gray-500);
    flex-shrink: 0;
    transition: color var(--transition-fast);
}

.terra-shopping-drawer__item-remove:hover {
    color: var(--terra-sale);
}

.terra-shopping-drawer__item-remove svg {
    width: 20px;
    height: 20px;
}

.terra-shopping-drawer__item-controls {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.terra-shopping-drawer__quantity {
    display: flex;
    align-items: center;
    border: 1px solid var(--terra-gray-200);
    border-radius: 4px;
    background-color: var(--terra-gray-50);
}

.terra-shopping-drawer__quantity-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    color: var(--terra-gray-600);
    font-size: var(--text-base);
    transition: color var(--transition-fast);
    font-weight: var(--font-semibold);
}

.terra-shopping-drawer__quantity-btn:hover {
    color: var(--terra-black);
}

.terra-shopping-drawer__quantity-btn:focus {
    outline: 2px solid var(--terra-green-dark);
    outline-offset: -2px;
}

.terra-shopping-drawer__quantity-input {
    width: 40px;
    height: 28px;
    border: none;
    border-left: 1px solid var(--terra-gray-200);
    border-right: 1px solid var(--terra-gray-200);
    background: transparent;
    text-align: center;
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--terra-black);
    font-family: inherit;
}

.terra-shopping-drawer__quantity-input:focus {
    outline: 2px solid var(--terra-green-dark);
    outline-offset: -2px;
    background-color: #E3F2FD;
}

/* Input spinner removal */
.terra-shopping-drawer__quantity-input::-webkit-outer-spin-button,
.terra-shopping-drawer__quantity-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.terra-shopping-drawer__quantity-input[type=number] {
    -moz-appearance: textfield;
}

.terra-shopping-drawer__item-subtotal {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--terra-black);
    white-space: nowrap;
}

/* Empty State */
.terra-shopping-drawer__empty {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 1;
    padding: var(--space-10);
    text-align: center;
}

.terra-shopping-drawer__empty-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-6);
}

.terra-shopping-drawer__empty-icon {
    color: var(--terra-gray-300);
    width: 80px;
    height: 80px;
}

.terra-shopping-drawer__empty-message {
    font-size: var(--text-base);
    color: var(--terra-gray-600);
    margin: 0;
}

.terra-shopping-drawer__continue-btn {
    width: 100%;
}

/* Summary Section */
.terra-shopping-drawer__summary {
    padding: var(--space-4);
    background-color: var(--terra-gray-50);
    border-top: 1px solid var(--terra-gray-200);
    flex-shrink: 0;
}

.terra-shopping-drawer__summary-row {
    display: flex;
    justify-content: space-between;
    padding: var(--space-2) 0;
}

.terra-shopping-drawer__summary-label {
    font-size: var(--text-xs);
    font-weight: var(--font-normal);
    color: var(--terra-gray-600);
}

.terra-shopping-drawer__summary-value {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--terra-black);
}

.terra-shopping-drawer__summary-divider {
    height: 1px;
    background-color: var(--terra-gray-200);
    margin: var(--space-2) 0;
}

.terra-shopping-drawer__summary-total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-3) 0;
    padding-top: var(--space-4);
}

.terra-shopping-drawer__total-label {
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    color: var(--terra-black);
}

.terra-shopping-drawer__total-value {
    font-size: var(--text-lg);
    font-weight: var(--font-bold);
    color: var(--terra-black);
}

/* Action Buttons */
.terra-shopping-drawer__actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    padding: var(--space-4);
    border-top: 1px solid var(--terra-gray-200);
    flex-shrink: 0;
}

.terra-shopping-drawer__btn {
    width: 100%;
    height: var(--btn-height);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
}

.terra-shopping-drawer__continue-shopping {
    background-color: var(--terra-gray-100);
    color: var(--terra-black);
}

.terra-shopping-drawer__continue-shopping:hover {
    background-color: var(--terra-gray-200);
}

.terra-shopping-drawer__checkout {
    background-color: var(--terra-green-dark);
    color: var(--terra-white);
}

.terra-shopping-drawer__checkout:hover {
    background-color: var(--terra-green-primary);
}

.terra-shopping-drawer__btn:focus {
    outline: 2px solid var(--terra-green-dark);
    outline-offset: 2px;
}

.terra-shopping-drawer__btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Loading State */
.terra-shopping-drawer__btn.loading {
    opacity: 0.6;
    pointer-events: none;
    position: relative;
}

.terra-shopping-drawer__btn.loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    border: 2px solid currentColor;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Toast Notifications */
#terra-toast-container {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    z-index: calc(var(--z-modal) + 1);
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    max-width: 400px;
}

.terra-toast {
    padding: var(--space-4);
    border-radius: 8px;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    opacity: 0;
    transform: translateY(20px);
    transition: all 200ms ease-out;
    pointer-events: auto;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.terra-toast--success {
    background-color: var(--terra-green-dark);
    color: var(--terra-white);
}

.terra-toast--error {
    background-color: #F44336;
    color: var(--terra-white);
}

.terra-toast--visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Toast */
@media (max-width: 767px) {
    #terra-toast-container {
        left: var(--space-4);
        right: var(--space-4);
        bottom: var(--space-4);
        max-width: none;
    }
}

/* Responsive Design */

/* Tablet (768px - 1023px) */
@media (max-width: 1023px) {
    .terra-shopping-drawer {
        width: 360px;
    }

    .terra-shopping-drawer__item-image {
        width: 50px;
        height: 50px;
    }
}

/* Mobile (390px - 767px) */
@media (max-width: 767px) {
    .terra-shopping-drawer {
        width: 100%;
        max-width: 100%;
    }

    .terra-shopping-drawer__header {
        height: 56px;
        padding: var(--space-3);
    }

    .terra-shopping-drawer__title {
        font-size: var(--text-base);
    }

    .terra-shopping-drawer__item {
        padding: var(--space-3);
    }

    .terra-shopping-drawer__item-image {
        width: 60px;
        height: 60px;
    }

    .terra-shopping-drawer__btn {
        height: 48px;
    }

    .terra-shopping-drawer__actions {
        padding: var(--space-3);
        gap: var(--space-2);
    }
}

/* Small Mobile (< 390px) */
@media (max-width: 389px) {
    .terra-shopping-drawer {
        width: 100%;
    }

    .terra-shopping-drawer__header {
        padding: var(--space-3);
    }

    .terra-shopping-drawer__items {
        padding: var(--space-3);
        gap: var(--space-2);
    }

    .terra-shopping-drawer__summary {
        padding: var(--space-3);
    }

    .terra-shopping-drawer__actions {
        padding: var(--space-3);
    }
}