/**
 * LE Quotation Builder - Frontend CSS
 * Upgraded Premium, Formal & Responsive Layout
 */

:root {
    --le-primary: #0f172a;       /* Deep Slate */
    --le-primary-hover: #1e293b; /* Mid Slate */
    --le-accent: #0284c7;        /* Sky Blue */
    --le-accent-hover: #0369a1;  /* Deep Sky Blue */
    --le-success: #10b981;       /* Emerald */
    --le-success-hover: #059669; /* Deep Emerald */
    --le-danger: #ef4444;        /* Red */
    --le-danger-hover: #dc2626;  /* Deep Red */
    --le-bg: #f8fafc;            /* Off-white Slate */
    --le-card-bg: #ffffff;       /* Pure white */
    --le-border: #e2e8f0;        /* Slate 200 */
    --le-border-hover: #cbd5e1;  /* Slate 300 */
    --le-text-main: #334155;     /* Slate 700 */
    --le-text-dark: #0f172a;     /* Slate 900 */
    --le-text-muted: #64748b;    /* Slate 500 */
    --le-radius-sm: 6px;
    --le-radius: 8px;
    --le-radius-lg: 12px;
    --le-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --le-shadow: 0 4px 6px -1px rgba(15, 23, 42, 0.05), 0 2px 4px -1px rgba(15, 23, 42, 0.03);
    --le-shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -2px rgba(15, 23, 42, 0.04);
    --le-transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base Form Styling Container */
.le-qb-frontend-container {
    background: var(--le-card-bg);
    border: 1px solid var(--le-border);
    border-radius: var(--le-radius-lg);
    padding: 32px;
    margin: 24px 0;
    box-shadow: var(--le-shadow-lg);
    color: var(--le-text-main);
    line-height: 1.5;
}

.le-qb-frontend-container h2 {
    margin: 0;
    font-size: 26px;
    font-weight: 800;
    color: var(--le-text-dark);
    letter-spacing: -0.5px;
}

.le-qb-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--le-border);
    padding-bottom: 20px;
    margin-bottom: 28px;
    gap: 16px;
    flex-wrap: wrap;
}

.le-qb-frontend-container h3 {
    margin: 0 0 16px 0;
    font-size: 16px;
    font-weight: 700;
    color: var(--le-text-dark);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--le-border);
    padding-bottom: 8px;
}

/* Form Layout Sections */
.le-form-section {
    margin-bottom: 28px;
    background: var(--le-bg);
    padding: 24px;
    border-radius: var(--le-radius);
    border: 1px solid var(--le-border);
    box-shadow: var(--le-shadow-sm);
    transition: var(--le-transition);
}

.le-form-section:hover {
    border-color: var(--le-border-hover);
    box-shadow: var(--le-shadow);
}

/* Grids */
.le-grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.le-grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.gap-30 {
    gap: 30px;
}

/* Inputs & Form Elements */
.le-field {
    display: flex;
    flex-direction: column;
    margin-bottom: 16px;
}

.le-field label {
    font-weight: 600;
    font-size: 13px;
    color: var(--le-text-muted);
    margin-bottom: 6px;
}

.le-field input[type="text"],
.le-field input[type="number"],
.le-field select,
.le-qb-frontend-container textarea {
    padding: 10px 14px;
    border: 1px solid var(--le-border);
    border-radius: var(--le-radius-sm);
    font-size: 14px;
    color: var(--le-text-dark);
    background-color: var(--le-card-bg);
    width: 100%;
    box-sizing: border-box;
    transition: var(--le-transition);
    box-shadow: var(--le-shadow-sm);
}

.le-field input[type="text"]:hover,
.le-field input[type="number"]:hover,
.le-field select:hover,
.le-qb-frontend-container textarea:hover {
    border-color: var(--le-border-hover);
}

.le-field input:focus,
.le-field select:focus,
.le-qb-frontend-container textarea:focus {
    border-color: var(--le-primary);
    box-shadow: 0 0 0 3px rgba(15, 23, 42, 0.1);
    outline: 0;
}

.le-field-group {
    display: flex;
    gap: 12px;
}

.width-60 {
    flex: 0 0 60%;
}

.width-40 {
    flex: 0 0 40%;
}

/* Controls / Item Adder Bar */
.le-items-controls {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
    flex-wrap: wrap;
    align-items: center;
}

/* Select2 Custom Theme Alignment */
.select2-container {
    box-sizing: border-box;
}

.select2-container--default .select2-selection--single {
    height: 42px !important;
    border: 1px solid var(--le-border) !important;
    border-radius: var(--le-radius-sm) !important;
    padding: 6px 12px !important;
    font-size: 14px;
    display: flex;
    align-items: center;
    transition: var(--le-transition) !important;
    box-shadow: var(--le-shadow-sm) !important;
    background-color: var(--le-card-bg) !important;
}

.select2-container--default .select2-selection--single:hover {
    border-color: var(--le-border-hover) !important;
}

.select2-container--default.select2-container--focus .select2-selection--single {
    border-color: var(--le-primary) !important;
    box-shadow: 0 0 0 3px rgba(15, 23, 42, 0.1) !important;
    outline: none;
}

.select2-container--default .select2-selection--single .select2-selection__arrow {
    height: 40px !important;
    right: 8px !important;
}

/* Items Builder Table Style */
.le-items-grid-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin-top: 10px;
    background: var(--le-card-bg);
    border-radius: var(--le-radius);
    overflow: hidden;
    border: 1px solid var(--le-border);
    box-shadow: var(--le-shadow-sm);
}

.le-items-grid-table th {
    background: #f1f5f9;
    font-weight: 700;
    color: var(--le-text-dark);
    font-size: 13.5px;
    padding: 14px 12px;
    border-bottom: 2px solid var(--le-border);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.le-items-grid-table td {
    padding: 16px 12px;
    border-bottom: 1px solid var(--le-border);
    vertical-align: top;
    background: var(--le-card-bg);
}

.le-items-grid-table tr:last-child td {
    border-bottom: none;
}

.le-items-grid-table td input[type="text"],
.le-items-grid-table td input[type="number"],
.le-items-grid-table td textarea {
    padding: 8px 10px;
    font-size: 13.5px;
    border-radius: var(--le-radius-sm);
    border: 1px solid var(--le-border);
    transition: var(--le-transition);
    background-color: var(--le-card-bg);
    box-sizing: border-box;
    width: 100%;
}

.le-items-grid-table td input[type="text"]:focus,
.le-items-grid-table td input[type="number"]:focus,
.le-items-grid-table td textarea:focus {
    border-color: var(--le-primary);
    box-shadow: 0 0 0 3px rgba(15, 23, 42, 0.1);
    outline: none;
}

/* Image preview box */
.le-qb-image-preview {
    margin-bottom: 8px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.le-qb-image-preview img {
    border: 1px solid var(--le-border);
    border-radius: var(--le-radius-sm);
    background: var(--le-bg);
    padding: 4px;
    box-shadow: var(--le-shadow-sm);
    transition: var(--le-transition);
    max-width: 80px;
    max-height: 80px;
    object-fit: contain;
}

.pic-cell {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    min-width: 110px;
}

/* Drag Handle & Row Deletion */
.drag-handle {
    cursor: move;
    text-align: center;
    vertical-align: middle;
    color: var(--le-text-muted);
    transition: color 0.15s ease;
}

.drag-handle:hover {
    color: var(--le-text-dark);
}

.remove-row-btn {
    color: var(--le-text-muted) !important;
    font-size: 18px;
    text-decoration: none;
    transition: var(--le-transition);
    display: inline-block;
}

.remove-row-btn:hover {
    color: var(--le-danger) !important;
    transform: scale(1.2);
}

/* Buttons Upgrade */
.le-qb-frontend-container .button {
    background-color: var(--le-card-bg);
    color: var(--le-text-main);
    border: 1px solid var(--le-border);
    padding: 10px 18px;
    border-radius: var(--le-radius);
    font-weight: 600;
    font-size: 13.5px;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    box-shadow: var(--le-shadow-sm);
    transition: var(--le-transition);
}

.le-qb-frontend-container .button:hover {
    background-color: var(--le-bg);
    border-color: var(--le-border-hover);
    transform: translateY(-1px);
    box-shadow: var(--le-shadow);
}

.le-qb-frontend-container .button.button-primary {
    background-color: var(--le-primary);
    color: #fff;
    border-color: var(--le-primary);
}

.le-qb-frontend-container .button.button-primary:hover {
    background-color: var(--le-primary-hover);
    border-color: var(--le-primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(15, 23, 42, 0.15);
}

.le-qb-frontend-container .btn-secondary {
    background-color: var(--le-primary) !important;
    color: #fff !important;
    border-color: var(--le-primary) !important;
}

.le-qb-frontend-container .btn-secondary:hover {
    background-color: var(--le-primary-hover) !important;
    border-color: var(--le-primary-hover) !important;
    transform: translateY(-1px) !important;
    box-shadow: 0 4px 10px rgba(15, 23, 42, 0.15) !important;
}

/* WooCommerce Add product button specific accent */
#le-qb-add-wc-product {
    background-color: var(--le-accent) !important;
    color: #fff !important;
    border-color: var(--le-accent) !important;
}

#le-qb-add-wc-product:hover {
    background-color: var(--le-accent-hover) !important;
    border-color: var(--le-accent-hover) !important;
    transform: translateY(-1px) !important;
    box-shadow: 0 4px 10px rgba(2, 132, 199, 0.2) !important;
}

.btn-print-pdf {
    background-color: var(--le-success) !important;
    color: #fff !important;
    border-color: var(--le-success) !important;
}

.btn-print-pdf:hover {
    background-color: var(--le-success-hover) !important;
    border-color: var(--le-success-hover) !important;
    transform: translateY(-1px) !important;
    box-shadow: 0 4px 10px rgba(16, 185, 129, 0.2) !important;
}

.le-btn-new {
    background-color: var(--le-accent) !important;
    color: #fff !important;
    border-color: var(--le-accent) !important;
}

.le-btn-new:hover {
    background-color: var(--le-accent-hover) !important;
    border-color: var(--le-accent-hover) !important;
    transform: translateY(-1px) !important;
    box-shadow: 0 4px 10px rgba(2, 132, 199, 0.2) !important;
}

.le-qb-actions {
    display: flex;
    gap: 12px;
    align-items: center;
}

.le-btn-logout {
    background-color: var(--le-danger) !important;
    color: #fff !important;
    border-color: var(--le-danger) !important;
}

.le-btn-logout:hover {
    background-color: var(--le-danger-hover) !important;
    border-color: var(--le-danger-hover) !important;
    transform: translateY(-1px) !important;
    box-shadow: 0 4px 10px rgba(239, 68, 68, 0.2) !important;
}

/* Totals Summary Box */
.le-totals-summary-box {
    background: var(--le-card-bg);
    border: 1px solid var(--le-border);
    border-radius: var(--le-radius);
    padding: 20px;
    box-shadow: var(--le-shadow-sm);
    transition: var(--le-transition);
}

.le-totals-summary-box:hover {
    border-color: var(--le-border-hover);
    box-shadow: var(--le-shadow);
}

.le-totals-summary-box table {
    width: 100%;
    border-collapse: collapse;
}

.le-totals-summary-box td {
    padding: 10px 0;
    font-size: 14.5px;
    border-bottom: 1px solid var(--le-bg);
    color: var(--le-text-main);
}

.le-totals-summary-box tr:last-child td {
    border-bottom: none;
}

.le-totals-summary-box td:first-child {
    font-weight: 600;
}

.le-totals-summary-box td:last-child {
    text-align: right;
    font-family: monospace;
    font-weight: 600;
    font-size: 15px;
}

.le-totals-summary-box .total-row td {
    font-size: 17px;
    font-weight: 700;
    border-top: 1.5px solid var(--le-border);
    padding-top: 12px;
}

.le-totals-summary-box .advance-row td {
    font-size: 15px;
    font-weight: 700;
    border-top: 1px dashed var(--le-border);
}

/* Submissions / Alerts */
.le-submit-bar {
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--le-border);
    display: flex;
    align-items: center;
    gap: 16px;
}

.le-qb-frontend-alert {
    padding: 16px 20px;
    border-radius: var(--le-radius);
    font-weight: 600;
    margin: 24px 0;
    box-shadow: var(--le-shadow-sm);
}

.le-qb-frontend-alert.error {
    background-color: #fef2f2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

/* ==========================================================================
   Mobile Responsive Optimizations (Screens < 768px)
   ========================================================================== */
@media (max-width: 767px) {
    /* Main Layout */
    .le-qb-frontend-container {
        padding: 16px;
        margin: 10px 0;
    }
    
    .le-qb-header {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
        margin-bottom: 20px;
    }
    
    .le-qb-header h2 {
        text-align: center;
        font-size: 20px;
    }
    
    .le-qb-actions {
        flex-direction: column;
        align-items: stretch;
        width: 100%;
    }
    
    .le-qb-header .le-btn-new,
    .le-qb-header .le-btn-logout {
        width: 100%;
        text-align: center;
    }

    /* Collapse Grids to 1 Column */
    .le-grid-3, .le-grid-2 {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .le-form-section {
        padding: 16px;
        margin-bottom: 20px;
    }

    /* Controls styling */
    .le-items-controls {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }
    
    .select2-container, 
    #le-qb-wc-product-select {
        width: 100% !important;
    }
    
    .le-items-controls .button {
        width: 100%;
        text-align: center;
    }

    /* Transform Table to Card Layout */
    .le-items-grid-table {
        border: none;
        background: transparent;
        box-shadow: none;
    }

    .le-items-grid-table thead {
        display: none; /* Hide header columns */
    }

    .le-items-grid-table tbody {
        display: flex;
        flex-direction: column;
        gap: 24px;
    }

    /* Turn rows into separate cards */
    .le-items-grid-table tr.le-qb-item-row {
        display: block;
        background: var(--le-card-bg);
        border: 1px solid var(--le-border);
        border-radius: var(--le-radius-lg);
        padding: 50px 16px 16px 16px; /* Pad top to float action buttons */
        position: relative;
        box-shadow: var(--le-shadow);
        box-sizing: border-box;
    }

    .le-items-grid-table td {
        display: block;
        padding: 0;
        border: none;
        width: 100% !important;
        margin-bottom: 12px;
    }
    
    .le-items-grid-table td:last-child {
        margin-bottom: 0;
    }

    /* floating drag handle & delete bin at the top corner of card */
    .le-items-grid-table tr.le-qb-item-row > td:first-child {
        position: absolute;
        top: 14px;
        left: 16px;
        width: auto !important;
        margin-bottom: 0;
    }
    
    .le-items-grid-table tr.le-qb-item-row > td:last-child {
        position: absolute;
        top: 14px;
        right: 16px;
        width: auto !important;
        margin-bottom: 0;
    }

    /* Picture cell: side-by-side layout on mobile */
    .le-items-grid-table td.pic-cell {
        flex-direction: row;
        align-items: center;
        justify-content: flex-start;
        gap: 12px;
        padding-bottom: 12px;
        border-bottom: 1px dashed var(--le-border);
        margin-bottom: 14px;
        width: 100% !important;
    }
    
    .le-items-grid-table td.pic-cell .le-qb-image-preview {
        margin-bottom: 0;
        flex-shrink: 0;
    }
    
    .le-items-grid-table td.pic-cell .select-img-btn,
    .le-items-grid-table td.pic-cell .remove-img-btn {
        flex: 1;
        width: auto;
        padding: 8px !important;
        font-size: 11.5px !important;
    }

    /* Item names and Specs inside card */
    .le-items-grid-table td .item-name-wrap input.item-name {
        width: 100% !important;
    }

    .le-items-grid-table td .specs-textarea-wrap textarea.item-specs {
        width: 100% !important;
    }

    /* Small fields alignment (Unit, Qty, Rate, Amount) - stack in 2x2 grid */
    .le-items-grid-table td:nth-child(4), /* Unit */
    .le-items-grid-table td:nth-child(5), /* Qty */
    .le-items-grid-table td:nth-child(6), /* Rate */
    .le-items-grid-table td:nth-child(7)  /* Amount */ {
        display: inline-block;
        width: 48% !important;
        margin-right: 4%;
        margin-bottom: 12px;
        vertical-align: top;
        box-sizing: border-box;
    }

    .le-items-grid-table td:nth-child(5), /* Qty */
    .le-items-grid-table td:nth-child(7)  /* Amount */ {
        margin-right: 0;
        width: 48% !important;
    }

    /* Add context labels via CSS pseudo elements */
    .le-items-grid-table td:nth-child(4)::before { content: "Unit"; display: block; font-size: 11px; font-weight: 700; color: var(--le-text-muted); margin-bottom: 4px; text-transform: uppercase; }
    .le-items-grid-table td:nth-child(5)::before { content: "Quantity"; display: block; font-size: 11px; font-weight: 700; color: var(--le-text-muted); margin-bottom: 4px; text-transform: uppercase; }
    .le-items-grid-table td:nth-child(6)::before { content: "Rate (BDT)"; display: block; font-size: 11px; font-weight: 700; color: var(--le-text-muted); margin-bottom: 4px; text-transform: uppercase; }
    .le-items-grid-table td:nth-child(7)::before { content: "Amount (BDT)"; display: block; font-size: 11px; font-weight: 700; color: var(--le-text-muted); margin-bottom: 4px; text-transform: uppercase; }

    /* Summary Visibility panel checkbox grid layout */
    .le-visibility-settings > div {
        grid-template-columns: 1fr !important;
        gap: 8px;
    }
    
    /* Submit bar stacking */
    .le-submit-bar {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }
    
    .le-submit-bar .button {
        width: 100%;
        text-align: center;
        justify-content: center;
    }
    
    .le-submit-bar #le-qb-frontend-msg {
        margin-left: 0 !important;
        text-align: center;
    }
}

/* Previous Quotations Table styling */
.le-previous-quotes-section {
    margin-top: 50px;
    border-top: 2px solid var(--le-border);
    padding-top: 32px;
}
.le-previous-quotes-section h3 {
    font-size: 18px;
    margin-bottom: 20px;
}
.le-quotes-table-wrapper {
    overflow-x: auto;
    background: var(--le-card-bg);
    border: 1px solid var(--le-border);
    border-radius: var(--le-radius-lg);
    box-shadow: var(--le-shadow-sm);
    transition: var(--le-transition);
}
.le-quotes-table-wrapper:hover {
    border-color: var(--le-border-hover);
    box-shadow: var(--le-shadow);
}
.le-quotes-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    text-align: left;
    font-size: 14px;
}
.le-quotes-table th {
    background: #f8fafc;
    padding: 14px 16px;
    font-weight: 700;
    color: var(--le-text-dark);
    border-bottom: 2px solid var(--le-border);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.le-quotes-table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--le-border);
    color: var(--le-text-main);
    vertical-align: middle;
}
.le-quotes-table tr:last-child td {
    border-bottom: none;
}
.le-quotes-table tr {
    transition: background-color 0.15s ease-in-out;
}
.le-quotes-table tr:hover {
    background-color: #f8fafc;
}
.le-badge-source {
    display: inline-block;
    padding: 3px 8px;
    border-radius: 4px;
    font-weight: 600;
    font-size: 11px;
}
.le-badge-showroom {
    background: #dcfce7;
    color: #166534;
    border: 1px solid #bbf7d0;
}
.le-badge-cart {
    background: #e2e8f0;
    color: #334155;
    border: 1px solid #cbd5e1;
}