/**
 * Checkout Components - Mobile-First Responsive Design
 * LUMINA Design System
 * E-com Platform
 */

/* ===================== ROOT & VARIABLES ===================== */
:root {
    --checkout-max-width: 1200px;
    --checkout-sidebar-width: 320px;
    --step-height: 60px;
    --transition-step: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===================== CHECKOUT PAGE CONTAINER ===================== */
.checkout-page {
    min-height: 100vh;
    background: var(--color-slate-50);
    padding: var(--space-md);
}

/* Desktop layout: add padding */
@media (min-width: 1024px) {
    .checkout-page {
        padding: var(--space-xl) var(--space-xl);
    }
}

/* ===================== CHECKOUT PROGRESS BAR ===================== */
.checkout-progress {
    margin-bottom: var(--space-xl);
}

.progress-container {
    max-width: var(--checkout-max-width);
    margin: 0 auto;
}

/* Progress bar - main container */
.checkout-step-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-xs);
    list-style: none;
    padding: 0;
    margin: 0;
}

/* Individual step items */
.step-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    flex: 1;
    position: relative;
}

/* Step number circle */
.step-number {
    width: var(--step-height);
    height: var(--step-height);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--color-slate-200);
    color: var(--color-slate-600);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-lg);
    transition: var(--transition-step);
    border: 2px solid transparent;
    flex-shrink: 0;
    
    /* Mobile: smaller */
    width: 48px;
    height: 48px;
    font-size: var(--font-size-base);
}

/* Desktop: normal size */
@media (min-width: 768px) {
    .step-number {
        width: var(--step-height);
        height: var(--step-height);
        font-size: var(--font-size-lg);
    }
}

/* Step label */
.step-label {
    font-size: var(--font-size-xs);
    color: var(--color-slate-600);
    text-align: center;
    line-height: 1.1;
    transition: var(--transition-step);
    max-width: 50px;
    word-break: break-word;
}

@media (min-width: 768px) {
    .step-label {
        font-size: var(--font-size-sm);
        max-width: 100%;
    }
}

/* Connector lines between steps */
.step-line {
    position: absolute;
    top: 24px;
    left: 50%;
    right: -50%;
    height: 2px;
    background: var(--color-slate-300);
    transition: var(--transition-step);
    display: none;
}

@media (min-width: 640px) {
    .step-line {
        display: block;
    }
}

/* Active step styling */
.step-item.active .step-number {
    background: var(--color-indigo-500);
    color: white;
    border-color: var(--color-indigo-600);
    box-shadow: 0 0 0 4px var(--color-indigo-100);
    transform: scale(1.05);
}

.step-item.active .step-label {
    color: var(--color-indigo-600);
    font-weight: var(--font-weight-semibold);
}

/* Completed step styling */
.step-item.completed .step-number {
    background: var(--color-green-100);
    color: var(--color-green-700);
    border-color: var(--color-green-300);
}

.step-item.completed .step-label {
    color: var(--color-green-700);
}

/* Completed step line */
.step-item.completed ~ .step-line {
    background: var(--color-green-300);
}

/* Connect active line to previous steps */
.step-item.active ~ .step-line {
    background: var(--color-slate-300);
}

/* ===================== CHECKOUT CONTAINER ===================== */
.checkout-page .checkout-container {
    max-width: var(--checkout-max-width) !important;
    margin: 0 auto !important;
    width: 100% !important;
    padding: 0 !important;
}

.checkout-page .checkout-content {
    display: grid !important;
    grid-template-columns: 1fr !important;
    grid-template-rows: auto auto !important;
    gap: var(--space-lg) !important;
}

/* Desktop: sidebar toujours en bas, jamais à côté */
@media (min-width: 1024px) {
    .checkout-page .checkout-content {
        grid-template-columns: 1fr !important;
        gap: var(--space-xl) !important;
    }
}

/* Main content area */
.checkout-main {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

/* ===================== CHECKOUT SECTION ===================== */
.checkout-section {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin: 0;
    border: 1px solid var(--color-slate-200);
    transition: var(--transition-base);
}

@media (min-width: 1024px) {
    .checkout-section {
        margin: 0;
    }
}

.checkout-section h2 {
    margin: 0 0 var(--space-lg);
    color: var(--color-slate-900);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
}

@media (min-width: 768px) {
    .checkout-section h2 {
        font-size: var(--font-size-2xl);
    }
}

/* ===================== CART REVIEW ===================== */
.cart-review-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--color-slate-200);
}

.cart-review-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--color-slate-50);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-slate-100);
}

.item-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    flex: 1;
    min-width: 0;
}

.item-name {
    font-weight: var(--font-weight-semibold);
    color: var(--color-slate-900);
    font-size: var(--font-size-base);
    word-break: break-word;
}

.item-qty {
    font-size: var(--font-size-sm);
    color: var(--color-slate-600);
}

.item-price {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-indigo-600);
    white-space: nowrap;
}

/* ===================== CART REVIEW TOTALS ===================== */
.cart-review-totals {
    background: var(--color-slate-50);
    border: 1px solid var(--color-slate-200);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
}

.total-line {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) 0;
    font-size: var(--font-size-base);
    color: var(--color-slate-700);
}

.total-line strong {
    color: var(--color-slate-900);
    font-weight: var(--font-weight-semibold);
}

.total-line.total-final {
    border-top: 2px solid var(--color-slate-300);
    border-bottom: 2px solid var(--color-slate-300);
    padding: var(--space-lg) 0;
    font-size: var(--font-size-lg);
}

.total-line.total-final strong {
    font-size: var(--font-size-xl);
    color: var(--color-indigo-600);
}

.text-note {
    margin: var(--space-md) 0 0;
    font-size: var(--font-size-sm);
    color: var(--color-slate-600);
    font-style: italic;
}

/* ===================== CHECKOUT ACTIONS ===================== */
.checkout-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.action-card {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    background: var(--color-slate-50);
}

.action-card.success {
    background: var(--color-green-50);
    border-color: var(--color-green-200);
}

.action-card.info {
    background: var(--color-blue-50);
    border-color: var(--color-blue-200);
}

.card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    min-width: 40px;
    border-radius: 50%;
    background: var(--color-slate-200);
    color: var(--color-slate-600);
}

.action-card.success .card-icon {
    background: var(--color-green-100);
    color: var(--color-green-700);
}

.action-card.info .card-icon {
    background: var(--color-blue-100);
    color: var(--color-blue-700);
}

.card-content h3 {
    margin: 0 0 var(--space-xs);
    color: var(--color-slate-900);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
}

.card-content p {
    margin: 0;
    color: var(--color-slate-600);
    font-size: var(--font-size-sm);
}

/* ===================== ACTION BUTTONS ===================== */
.action-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

@media (min-width: 640px) {
    .action-buttons {
        flex-direction: row;
    }
}

/* ===================== CHECKOUT SIDEBAR ===================== */
.checkout-sidebar {
    display: block;
}

/* Sur desktop, il n'y a pas de sticky (déjà en bas du flux) */
@media (min-width: 1024px) {
    .checkout-sidebar {
        display: block;
    }
}

.sidebar-card {
    background: white;
    border: 1px solid var(--color-slate-200);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    width: calc(100% - var(--space-2xl));
    margin: 0 var(--space-md);
    max-width: 600px;
}

@media (min-width: 1024px) {
    .sidebar-card {
        width: 100%;
        margin: 0;
    }
}

.sidebar-card h3 {
    margin: 0 0 var(--space-lg);
    color: var(--color-slate-900);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
}

.sidebar-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) 0;
    font-size: var(--font-size-sm);
    color: var(--color-slate-600);
}

.sidebar-item strong {
    color: var(--color-slate-900);
    font-weight: var(--font-weight-semibold);
}

.sidebar-item.total {
    padding-top: var(--space-lg);
    font-size: var(--font-size-base);
    border-top: 1px solid var(--color-slate-200);
}

.sidebar-item.total strong {
    color: var(--color-indigo-600);
    font-size: var(--font-size-lg);
}

.sidebar-divider {
    height: 1px;
    background: var(--color-slate-200);
    margin: var(--space-md) 0;
}

/* ===================== FORM ELEMENTS ===================== */
.checkout-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.form-grid-2 {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
}

@media (min-width: 640px) {
    .form-grid-2 {
        grid-template-columns: 1fr 1fr;
    }
}

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

.form-group label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-slate-700);
}

.form-input,
.form-select,
.form-textarea {
    padding: var(--space-md);
    border: 1px solid var(--color-slate-300);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-family: inherit;
    transition: var(--transition-base);
    background: white;
    color: var(--color-slate-900);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-indigo-500);
    box-shadow: 0 0 0 3px var(--color-indigo-100);
    background: white;
}

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

/* Error states */
.form-input.error,
.form-select.error {
    border-color: var(--color-red-500);
}

.form-input.error:focus,
.form-select.error:focus {
    box-shadow: 0 0 0 3px var(--color-red-100);
}

/* ===================== PAYMENT METHODS ===================== */
.payment-methods-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
}

.payment-method-card {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--space-md);
    padding: var(--space-lg);
    border: 2px solid var(--color-slate-200);
    border-radius: var(--radius-md);
    background: white;
    cursor: pointer;
    transition: var(--transition-step);
    align-items: center;
}

.payment-method-card:hover {
    border-color: var(--color-indigo-300);
    background: var(--color-indigo-50);
}

.payment-method-card.active {
    border-color: var(--color-indigo-500);
    background: var(--color-indigo-50);
    box-shadow: 0 0 0 4px var(--color-indigo-100);
}

.payment-method-card input[type="radio"] {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    border: 2px solid var(--color-slate-300);
    border-radius: 50%;
    cursor: pointer;
    background: white;
    transition: var(--transition-base);
}

.payment-method-card input[type="radio"]:checked {
    background: var(--color-indigo-500);
    border-color: var(--color-indigo-600);
    box-shadow: inset 0 0 0 3px white;
}

.payment-method-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--color-slate-100);
    border-radius: var(--radius-md);
    color: var(--color-slate-600);
}

.payment-method-info h3 {
    margin: 0 0 var(--space-xs);
    color: var(--color-slate-900);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
}

.payment-method-info p {
    margin: 0;
    color: var(--color-slate-600);
    font-size: var(--font-size-sm);
}

/* ===================== PAYMENT DETAILS ===================== */
.payment-details-card {
    background: var(--color-slate-50);
    border: 1px solid var(--color-slate-200);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.payment-detail-item {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-lg);
    border-bottom: 1px solid var(--color-slate-200);
    align-items: flex-start;
}

.payment-detail-item:last-child {
    border-bottom: none;
}

.payment-detail-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    min-width: 44px;
    background: var(--color-indigo-100);
    color: var(--color-indigo-600);
    border-radius: var(--radius-md);
}

.payment-detail-label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-slate-600);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.payment-detail-value {
    font-size: var(--font-size-base);
    color: var(--color-slate-900);
    font-weight: var(--font-weight-semibold);
    margin-top: var(--space-xs);
}

/* ===================== ALERT BOXES ===================== */
.alert-box {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    border-left: 4px solid;
    align-items: flex-start;
}

.alert-box svg {
    width: 20px;
    height: 20px;
    min-width: 20px;
    flex-shrink: 0;
}

.alert-box h3 {
    margin: 0 0 var(--space-xs);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
}

.alert-box p {
    margin: 0;
    font-size: var(--font-size-sm);
}

.alert-warning {
    background: var(--color-yellow-50);
    border-left-color: var(--color-yellow-500);
    color: var(--color-yellow-800);
}

.alert-warning h3,
.alert-warning p {
    color: var(--color-yellow-900);
}

.alert-danger {
    background: var(--color-red-50);
    border-left-color: var(--color-red-500);
    color: var(--color-red-800);
}

.alert-danger h3,
.alert-danger p {
    color: var(--color-red-900);
}

.alert-info {
    background: var(--color-blue-50);
    border-left-color: var(--color-blue-500);
    color: var(--color-blue-800);
}

.alert-info h3,
.alert-info p {
    color: var(--color-blue-900);
}

/* ===================== FORM ACTIONS ===================== */
.form-actions {
    display: flex !important;
    flex-direction: column;
    gap: var(--space-md);
    padding-top: var(--space-lg);
    margin-top: var(--space-lg);
    border-top: 1px solid var(--color-slate-200);
}

@media (min-width: 640px) {
    .form-actions {
        flex-direction: row !important;
        justify-content: space-between;
    }
}

.form-actions .btn {
    flex: 1;
    display: inline-flex !important;
    width: auto !important;
}

/* ===================== FILE UPLOAD ===================== */
.upload-area {
    border: 2px dashed var(--color-slate-300);
    border-radius: var(--radius-md);
    padding: var(--space-xl);
    text-align: center;
    transition: var(--transition-base);
    cursor: pointer;
}

.upload-area:hover {
    border-color: var(--color-indigo-400);
    background: var(--color-indigo-50);
}

.upload-area.dragover {
    border-color: var(--color-indigo-500);
    background: var(--color-indigo-100);
}

.upload-area-icon {
    font-size: 32px;
    margin-bottom: var(--space-md);
}

.upload-area p {
    margin: 0;
    font-size: var(--font-size-sm);
    color: var(--color-slate-600);
}

.upload-area strong {
    color: var(--color-indigo-600);
}

.upload-area input[type="file"] {
    display: none;
}

/* ===================== CONFIRMATION PAGE ===================== */
.confirmation-success {
    text-align: center;
    padding: var(--space-xl);
    background: white;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-slate-200);
}

.confirmation-success-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-lg);
    background: var(--color-green-100);
    border-radius: 50%;
    color: var(--color-green-600);
}

.confirmation-success-badge svg {
    width: 56px;
    height: 56px;
}

/* ===================== BUTTONS ===================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: var(--transition-base);
    text-decoration: none;
    white-space: nowrap;
    min-height: 44px;
}

.btn-primary {
    background: var(--color-primary-600);
    color: white;
}

.btn-primary:hover {
    background: var(--color-primary-700);
    transform: translateY(-2px);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: var(--color-slate-200);
    color: var(--color-slate-900);
}

.btn-secondary:hover {
    background: var(--color-slate-300);
    transform: translateY(-2px);
}

.btn-secondary:active {
    transform: translateY(0);
}

.btn-danger {
    background: var(--color-red-600);
    color: white;
}

.btn-danger:hover {
    background: var(--color-red-700);
}

/* ===================== BADGES ===================== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
}

.badge-info {
    background: var(--color-blue-100);
    color: var(--color-blue-700);
}

.badge-success {
    background: var(--color-green-100);
    color: var(--color-green-700);
}

.badge-warning {
    background: var(--color-yellow-100);
    color: var(--color-yellow-700);
}

.badge-danger {
    background: var(--color-red-100);
    color: var(--color-red-700);
}

/* ===================== RESPONSIVE MOBILE TWEAKS ===================== */
@media (max-width: 639px) {
    .checkout-page {
        padding: var(--space-md);
        background: var(--color-white);
    }
    
    .checkout-section {
        padding: var(--space-md);
        margin-bottom: var(--space-md);
        border-radius: var(--radius-md);
    }
    
    .checkout-section h2 {
        font-size: var(--font-size-base);
        margin-bottom: var(--space-md);
    }
    
    .form-group label {
        font-size: var(--font-size-xs);
    }
    
    .btn {
        padding: var(--space-sm) var(--space-md);
        font-size: var(--font-size-sm);
        width: 100%;
        min-height: 44px;
    }
    
    .btn svg {
        width: 16px;
        height: 16px;
    }
    
    .form-actions {
        gap: var(--space-sm);
        padding-top: var(--space-md);
        margin-top: var(--space-md);
        flex-direction: column;
    }
    
    .form-actions .btn {
        flex: 1;
        font-size: var(--font-size-sm);
    }
    
    .action-buttons {
        width: 100%;
        flex-direction: column;
    }
    
    .action-buttons .btn {
        flex: 1;
    }
}

/* ===================== ACCESSIBILITY ===================== */
.btn:focus,
.form-input:focus,
.form-select:focus,
.payment-method-card input:focus {
    outline: 2px solid var(--color-indigo-500);
    outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .step-number,
    .step-label,
    .step-line,
    .payment-method-card,
    .btn,
    .form-input {
        transition: none;
    }
}