/* ==========================================================================
   Mobile-First Order Form Design
   ========================================================================== */

/* Mobile Steps */
.mobile-steps {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-lg);
    background: var(--white);
    border-radius: var(--border-radius-lg);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
}

.step {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    opacity: 0.5;
    transition: opacity var(--transition-normal);
}

.step.active {
    opacity: 1;
}

.step-number {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--border-color);
    color: var(--text-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-semibold);
    transition: all var(--transition-normal);
}

.step.active .step-number {
    background: var(--primary-color);
    color: var(--white);
}

.step-title {
    font-size: var(--font-size-sm);
    color: var(--text-light);
    display: none;
}

@media (min-width: 480px) {
    .step-title {
        display: block;
    }
}

/* Mobile Form */
.mobile-order-form {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
}

.form-step {
    display: none;
}

.form-step.active {
    display: block;
}

.form-step h3 {
    margin-bottom: var(--spacing-lg);
    color: var(--primary-color);
}

.mobile-form-group {
    margin-bottom: var(--spacing-lg);
}

.mobile-form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: var(--font-weight-medium);
    color: var(--text-color);
}

.mobile-form-group input,
.mobile-form-group select,
.mobile-form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-normal);
}

.mobile-form-group input:focus,
.mobile-form-group select:focus,
.mobile-form-group textarea:focus {
    border-color: var(--primary-color);
    outline: none;
}

.mobile-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

/* Mobile Product Card */
.mobile-product-card {
    background: var(--background-secondary);
    border-radius: var(--border-radius-lg);
    margin-bottom: var(--spacing-md);
    position: relative;
    transition: all var(--transition-normal);
    border: 2px solid transparent;
}

.mobile-product-card.collapsed {
    background: var(--white);
    border-color: var(--border-color);
}

.mobile-product-card.active {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.product-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    cursor: pointer;
    user-select: none;
}

.mobile-product-card.collapsed .product-header {
    padding: var(--spacing-md) var(--spacing-lg);
}

.product-header h4 {
    margin: 0;
    color: var(--primary-color);
    font-size: var(--font-size-base);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.product-header-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.expand-icon {
    font-size: var(--font-size-sm);
    transition: transform var(--transition-normal);
    color: var(--text-light);
}

.mobile-product-card.collapsed .expand-icon {
    transform: rotate(-90deg);
}

.product-summary {
    display: none;
    color: var(--text-light);
    font-size: var(--font-size-sm);
    margin-left: var(--spacing-sm);
}

.mobile-product-card.collapsed .product-summary {
    display: inline;
}

.btn-remove-product {
    background: var(--error-color);
    color: var(--white);
    border: none;
    border-radius: var(--border-radius-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    cursor: pointer;
    transition: all var(--transition-normal);
    font-size: var(--font-size-sm);
}

.btn-remove-product:hover {
    background: var(--error-dark);
}

.product-content {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    transition: all var(--transition-normal);
    overflow: hidden;
}

.mobile-product-card.collapsed .product-content {
    max-height: 0;
    padding: 0 var(--spacing-lg);
    opacity: 0;
}

/* PVC Options */
.pvc-options,
.process-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
}

.pvc-options label,
.process-options label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm);
    background: var(--white);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.pvc-options input[type="checkbox"],
.process-options input[type="checkbox"] {
    width: auto;
    margin: 0;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--spacing-3xl);
    color: var(--text-light);
}

.empty-state p {
    margin-bottom: var(--spacing-lg);
}

/* Mobile Navigation */
.mobile-form-navigation {
    display: flex;
    justify-content: space-between;
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border-color);
}

.btn-prev,
.btn-next,
.btn-submit,
.btn-add-product {
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--border-radius-md);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-normal);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.btn-prev {
    background: var(--background-secondary);
    color: var(--text-color);
}

.btn-next,
.btn-submit,
.btn-add-product {
    background: var(--primary-color);
    color: var(--white);
}

.btn-next:hover,
.btn-submit:hover,
.btn-add-product:hover {
    background: var(--primary-dark);
}

.btn-prev:hover {
    background: var(--border-color);
}

/* Summary Section */
.summary-section {
    background: var(--background-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-md);
    margin-bottom: var(--spacing-lg);
}

.summary-section h4 {
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
}

.summary-section p {
    margin-bottom: var(--spacing-sm);
}

/* Add More Button */
.add-more-btn {
    width: 100%;
    margin-top: var(--spacing-lg);
}

/* Spinner */
.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
}

/* Mobile Form Container */
@media (max-width: 768px) {
    .order-form {
        padding: 0;
        border-radius: 0;
        box-shadow: none;
    }

    .order-form-section {
        padding: 0;
        background: var(--white);
    }

    /* Step-based Navigation */
    .mobile-form-steps {
        display: flex;
        background: var(--white);
        border-bottom: 1px solid var(--border-color);
        position: sticky;
        top: 0;
        z-index: 100;
        padding: var(--spacing-md);
        gap: var(--spacing-sm);
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .step-indicator {
        display: flex;
        align-items: center;
        gap: var(--spacing-xs);
        padding: var(--spacing-sm) var(--spacing-md);
        background: var(--background-secondary);
        border-radius: var(--border-radius-full);
        white-space: nowrap;
        font-size: var(--font-size-sm);
        transition: all var(--transition-normal);
        flex-shrink: 0;
    }

    .step-indicator.active {
        background: var(--primary-color);
        color: var(--white);
    }

    .step-indicator.completed {
        background: var(--success-color);
        color: var(--white);
    }

    .step-number {
        width: 24px;
        height: 24px;
        border-radius: 50%;
        background: var(--white);
        color: var(--text-color);
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: var(--font-weight-semibold);
        font-size: var(--font-size-xs);
    }

    .step-indicator.active .step-number,
    .step-indicator.completed .step-number {
        background: rgba(255, 255, 255, 0.2);
        color: var(--white);
    }

    /* Mobile Card-Based Layout */
    .mobile-order-item {
        background: var(--white);
        margin: var(--spacing-md);
        padding: var(--spacing-lg);
        border-radius: var(--border-radius-lg);
        box-shadow: var(--shadow-sm);
        position: relative;
        transition: all var(--transition-normal);
    }

    .mobile-order-item.active {
        box-shadow: var(--shadow-lg);
        border: 2px solid var(--primary-color);
    }

    .item-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: var(--spacing-md);
    }

    .item-number {
        font-size: var(--font-size-lg);
        font-weight: var(--font-weight-bold);
        color: var(--primary-color);
    }

    .item-actions {
        display: flex;
        gap: var(--spacing-sm);
    }

    .btn-icon {
        width: 36px;
        height: 36px;
        border-radius: 50%;
        border: none;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        transition: all var(--transition-normal);
    }

    .btn-expand {
        background: var(--background-secondary);
        color: var(--text-color);
    }

    .btn-expand.expanded {
        background: var(--primary-color);
        color: var(--white);
        transform: rotate(180deg);
    }

    .btn-delete {
        background: var(--error-color);
        color: var(--white);
    }

    .btn-duplicate {
        background: var(--success-color);
        color: var(--white);
    }

    /* Mobile Form Fields */
    .mobile-form-grid {
        display: grid;
        gap: var(--spacing-md);
    }

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

    .mobile-form-group label {
        font-size: var(--font-size-sm);
        font-weight: var(--font-weight-medium);
        color: var(--text-light);
        display: flex;
        align-items: center;
        gap: var(--spacing-xs);
    }

    .mobile-form-group input,
    .mobile-form-group select {
        padding: var(--spacing-md);
        border: 2px solid var(--border-color);
        border-radius: var(--border-radius-md);
        font-size: var(--font-size-base);
        transition: all var(--transition-normal);
        background: var(--white);
    }

    .mobile-form-group input:focus,
    .mobile-form-group select:focus {
        border-color: var(--primary-color);
        box-shadow: 0 0 0 3px rgba(0, 85, 164, 0.1);
    }

    /* Dimension Inputs Side by Side */
    .dimension-group {
        display: grid;
        grid-template-columns: 1fr auto 1fr;
        gap: var(--spacing-sm);
        align-items: center;
    }

    .dimension-separator {
        font-size: var(--font-size-lg);
        color: var(--text-light);
    }

    /* PVC Selection */
    .pvc-selection {
        background: var(--background-secondary);
        padding: var(--spacing-md);
        border-radius: var(--border-radius-md);
        margin-top: var(--spacing-sm);
    }

    .pvc-visual {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        grid-template-rows: repeat(3, 1fr);
        gap: var(--spacing-xs);
        max-width: 200px;
        margin: 0 auto var(--spacing-md);
        aspect-ratio: 1;
    }

    .pvc-edge {
        background: var(--white);
        border: 2px solid var(--border-color);
        border-radius: var(--border-radius-sm);
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        transition: all var(--transition-normal);
        font-size: var(--font-size-sm);
        font-weight: var(--font-weight-medium);
    }

    .pvc-edge.active {
        background: var(--primary-color);
        color: var(--white);
        border-color: var(--primary-color);
    }

    .pvc-edge.top { grid-column: 2; grid-row: 1; }
    .pvc-edge.left { grid-column: 1; grid-row: 2; }
    .pvc-edge.center { 
        grid-column: 2; 
        grid-row: 2; 
        background: var(--background-tertiary);
        cursor: default;
    }
    .pvc-edge.right { grid-column: 3; grid-row: 2; }
    .pvc-edge.bottom { grid-column: 2; grid-row: 3; }

    /* Process Selection */
    .process-selection {
        display: flex;
        gap: var(--spacing-md);
        margin-top: var(--spacing-md);
    }

    .process-option {
        flex: 1;
        padding: var(--spacing-md);
        border: 2px solid var(--border-color);
        border-radius: var(--border-radius-md);
        text-align: center;
        cursor: pointer;
        transition: all var(--transition-normal);
    }

    .process-option.active {
        background: var(--primary-color);
        color: var(--white);
        border-color: var(--primary-color);
    }

    .process-icon {
        font-size: var(--font-size-xl);
        margin-bottom: var(--spacing-xs);
    }

    /* Floating Action Button */
    .mobile-fab {
        position: fixed;
        bottom: var(--spacing-xl);
        right: var(--spacing-lg);
        width: 56px;
        height: 56px;
        border-radius: 50%;
        background: var(--primary-color);
        color: var(--white);
        border: none;
        box-shadow: var(--shadow-lg);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: var(--font-size-xl);
        cursor: pointer;
        z-index: 50;
        transition: all var(--transition-normal);
    }

    .mobile-fab:active {
        transform: scale(0.95);
    }

    /* Bottom Navigation */
    .mobile-bottom-nav {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        background: var(--white);
        border-top: 1px solid var(--border-color);
        padding: var(--spacing-md);
        display: flex;
        gap: var(--spacing-md);
        z-index: 100;
    }

    .mobile-nav-btn {
        flex: 1;
        padding: var(--spacing-md);
        border: none;
        border-radius: var(--border-radius-md);
        font-weight: var(--font-weight-medium);
        cursor: pointer;
        transition: all var(--transition-normal);
    }

    .mobile-nav-btn.secondary {
        background: var(--background-secondary);
        color: var(--text-color);
    }

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

    /* Swipe Hints */
    .swipe-hint {
        display: flex;
        align-items: center;
        justify-content: center;
        padding: var(--spacing-md);
        color: var(--text-light);
        font-size: var(--font-size-sm);
        gap: var(--spacing-sm);
    }

    .swipe-icon {
        animation: swipeHint 2s ease-in-out infinite;
    }

    @keyframes swipeHint {
        0%, 100% { transform: translateX(0); }
        50% { transform: translateX(-10px); }
    }

    /* Collapsible Sections */
    .item-details {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease-out;
    }

    .item-details.expanded {
        max-height: 1000px;
        transition: max-height 0.5s ease-in;
    }

    /* Quick Summary */
    .item-summary {
        display: flex;
        flex-wrap: wrap;
        gap: var(--spacing-sm);
        margin-top: var(--spacing-md);
        padding-top: var(--spacing-md);
        border-top: 1px solid var(--border-color);
    }

    .summary-tag {
        padding: var(--spacing-xs) var(--spacing-sm);
        background: var(--background-secondary);
        border-radius: var(--border-radius-sm);
        font-size: var(--font-size-xs);
        color: var(--text-color);
    }

    .summary-tag.highlight {
        background: var(--primary-color);
        color: var(--white);
    }

    /* Empty State */
    .empty-state {
        text-align: center;
        padding: var(--spacing-3xl) var(--spacing-xl);
        color: var(--text-light);
    }

    .empty-state-icon {
        font-size: 4rem;
        margin-bottom: var(--spacing-lg);
        opacity: 0.3;
    }

    /* Hide desktop table on mobile */
    .order-form__table-wrapper,
    .table-controls {
        display: none;
    }

    /* Show mobile container */
    .mobile-order-container {
        display: block;
        padding-bottom: 80px; /* Space for bottom nav */
    }
}

/* Desktop: Hide mobile elements */
@media (min-width: 769px) {
    .mobile-form-steps,
    .mobile-order-container,
    .mobile-fab,
    .mobile-bottom-nav {
        display: none;
    }
}

/* Animations */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.mobile-order-item {
    animation: slideIn 0.3s ease-out;
}

/* Touch feedback */
.touchable {
    -webkit-tap-highlight-color: rgba(0, 85, 164, 0.1);
    touch-action: manipulation;
}

/* Loading skeleton */
.skeleton {
    background: linear-gradient(90deg, 
        var(--background-secondary) 25%, 
        var(--background-tertiary) 50%, 
        var(--background-secondary) 75%
    );
    background-size: 200% 100%;
    animation: loading 1.5s ease-in-out infinite;
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}