/* Simple Invoice Generator Styles */

/* Container */
.sig-invoice-generator-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

.sig-invoice-generator {
    background: #ffffff;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Header */
.sig-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    border-bottom: 1px solid #e0e0e0;
}

.sig-header h2 {
    margin: 0;
    font-size: 24px;
    color: #333;
}

.sig-header-actions {
    display: flex;
    gap: 15px;
    align-items: center;
}

/* Tab Switcher */
.sig-tab-switcher {
    display: flex;
    background: #f5f5f5;
    border-radius: 6px;
    padding: 2px;
}

.sig-tab {
    padding: 8px 20px;
    background: transparent;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    color: #666;
    transition: all 0.2s ease;
}

.sig-tab:hover {
    color: #333;
}

.sig-tab.active {
    background: #ffffff;
    color: #2c3e50;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* Content Layout */
.sig-content {
    padding: 30px;
}

.sig-edit-mode {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

@media (max-width: 968px) {
    .sig-edit-mode {
        grid-template-columns: 1fr;
    }
}

/* Sections */
.sig-section {
    background: #f9f9f9;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
}

.sig-section h3 {
    margin: 0 0 20px 0;
    font-size: 18px;
    color: #333;
    font-weight: 600;
}

.sig-section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.sig-section-header h3 {
    margin: 0;
}

/* Form Elements */
.sig-form-group {
    margin-bottom: 20px;
}

.sig-form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #555;
    font-size: 14px;
}

.sig-form-group input,
.sig-form-group textarea,
.sig-form-group select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    transition: border-color 0.3s ease;
}

.sig-form-group input:focus,
.sig-form-group textarea:focus,
.sig-form-group select:focus {
    outline: none;
    border-color: #3498db;
}

.sig-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.sig-input-group {
    display: flex;
    gap: 5px;
}

.sig-input-small {
    width: 80px !important;
}

/* Logo Upload */
.sig-logo-upload {
    border: 2px dashed #ddd;
    border-radius: 8px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.sig-logo-upload:hover,
.sig-logo-upload.drag-over {
    border-color: #3498db;
    background: #f0f8ff;
}

.sig-logo-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: #999;
}

.sig-logo-preview {
    position: relative;
    display: inline-block;
}

.sig-logo-preview img {
    max-width: 200px;
    max-height: 100px;
    border-radius: 4px;
}

.sig-remove-logo {
    position: absolute;
    top: -10px;
    right: -10px;
    width: 30px;
    height: 30px;
    background: #e74c3c;
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

/* Buttons */
.sig-btn {
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.sig-btn-primary {
    background: #3498db;
    color: white;
}

.sig-btn-primary:hover {
    background: #2980b9;
}

.sig-btn-secondary {
    background: #95a5a6;
    color: white;
}

.sig-btn-secondary:hover {
    background: #7f8c8d;
}

.sig-btn-outline {
    background: transparent;
    color: #3498db;
    border: 1px solid #3498db;
}

.sig-btn-outline:hover {
    background: #3498db;
    color: white;
}

.sig-btn-small {
    padding: 5px 10px;
    font-size: 12px;
}

.sig-btn-add-item {
    width: 100%;
    justify-content: center;
    margin-top: 15px;
    background: #f5f5f5;
    color: #666;
    border: 1px dashed #ddd;
}

.sig-btn-add-item:hover {
    background: #e8e8e8;
    border-style: solid;
}

/* Line Items Table */
.sig-table-wrapper {
    overflow-x: auto;
    margin-bottom: 20px;
}

.sig-line-items-table {
    width: 100%;
    border-collapse: collapse;
}

.sig-line-items-table th {
    background: #f5f5f5;
    padding: 12px;
    text-align: left;
    font-weight: 600;
    color: #555;
    font-size: 14px;
    border-bottom: 2px solid #e0e0e0;
}

.sig-line-items-table td {
    padding: 8px;
    border-bottom: 1px solid #e0e0e0;
    vertical-align: top;
}

.sig-drag-cell {
    width: 30px;
    cursor: move;
}

.sig-drag-handle {
    display: inline-block;
    color: #999;
    font-size: 18px;
    user-select: none;
}

.sig-description-cell textarea {
    width: 100%;
    min-width: 200px;
    padding: 10px 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    resize: vertical;
    font-size: 14px;
    transition: border-color 0.3s ease;
}

.sig-description-cell textarea:focus {
    outline: none;
    border-color: #3498db;
}

.sig-quantity-cell input,
.sig-rate-cell input {
    width: 80px;
    padding: 10px 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    text-align: right;
    font-size: 14px;
    transition: border-color 0.3s ease;
}

.sig-quantity-cell input:focus,
.sig-rate-cell input:focus {
    outline: none;
    border-color: #3498db;
}

.sig-currency-input {
    display: flex;
    align-items: center;
}

.sig-currency-symbol {
    margin-right: 5px;
    color: #666;
}

.sig-amount-cell {
    text-align: right;
    font-weight: 500;
    min-width: 100px;
}

.sig-actions-cell {
    width: 40px;
    text-align: center;
}

.sig-btn-remove {
    width: 30px;
    height: 30px;
    padding: 0;
    background: #e74c3c;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 20px;
    cursor: pointer;
    transition: background 0.2s ease;
}

.sig-btn-remove:hover {
    background: #c0392b;
}

.sig-sortable-helper {
    background: white;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
    opacity: 0.9;
}

.sig-limit-warning {
    color: #e74c3c;
    font-size: 12px;
    font-style: italic;
}

/* Calculations Panel */
.sig-calculations-grid {
    background: white;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    padding: 20px;
    margin-bottom: 20px;
}

.sig-calc-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid #f0f0f0;
}

.sig-calc-row:last-child {
    border-bottom: none;
}

.sig-calc-label {
    font-weight: 500;
    color: #555;
}

.sig-calc-label-group {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
}

.sig-calc-value {
    font-weight: 600;
    color: #333;
}

.sig-discount-controls,
.sig-tax-controls {
    display: flex;
    align-items: center;
    gap: 5px;
}

.sig-discount-input,
.sig-tax-input,
.sig-shipping-input {
    width: 80px !important;
    padding: 10px 12px !important;
    text-align: right;
    border: 1px solid #ddd !important;
    border-radius: 4px !important;
    font-size: 14px !important;
    transition: border-color 0.3s ease !important;
}

.sig-discount-input:focus,
.sig-tax-input:focus,
.sig-shipping-input:focus {
    outline: none !important;
    border-color: #3498db !important;
}

.sig-discount-type {
    width: 60px !important;
    padding: 10px 12px !important;
    border: 1px solid #ddd !important;
    border-radius: 4px !important;
    font-size: 14px !important;
    transition: border-color 0.3s ease !important;
}

.sig-discount-type:focus {
    outline: none !important;
    border-color: #3498db !important;
}

.sig-shipping-description {
    width: 150px !important;
    padding: 10px 12px !important;
    border: 1px solid #ddd !important;
    border-radius: 4px !important;
    font-size: 14px !important;
    transition: border-color 0.3s ease !important;
}

.sig-shipping-description:focus {
    outline: none !important;
    border-color: #3498db !important;
}

.sig-total-row {
    margin-top: 10px;
    padding-top: 20px;
    border-top: 2px solid #e0e0e0;
}

.sig-total-value {
    font-size: 20px;
    color: #2c3e50;
}

/* Additional Fields */
.sig-additional-fields {
    margin-top: 30px;
}

.sig-additional-fields textarea {
    resize: vertical;
}

/* Template Customizer */
.sig-customizer-panel {
    position: fixed;
    top: 0;
    right: 0;
    width: 400px;
    height: 100vh;
    background: white;
    box-shadow: -2px 0 8px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    overflow-y: auto;
}

.sig-customizer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid #e0e0e0;
}

.sig-close-btn {
    width: 30px;
    height: 30px;
    background: transparent;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: #999;
}

.sig-close-btn:hover {
    color: #333;
}

.sig-customizer-content {
    padding: 20px;
}

.sig-customizer-section {
    margin-bottom: 30px;
}

.sig-customizer-section h4 {
    margin: 0 0 15px 0;
    font-size: 16px;
    color: #333;
}

.sig-color-schemes {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.sig-color-scheme-btn {
    position: relative;
    width: 80px;
    height: 50px;
    border: 2px solid transparent;
    border-radius: 6px;
    font-size: 10px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-transform: capitalize;
    display: flex;
    align-items: end;
    justify-content: center;
    padding: 4px;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.sig-color-scheme-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border-color: #333;
}

.sig-color-scheme-btn.active {
    border-color: #2c3e50;
    box-shadow: 0 0 0 2px rgba(44, 62, 80, 0.3);
}

.sig-color-inputs {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.sig-color-input-group {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sig-color-input-wrapper {
    display: flex;
    gap: 10px;
    align-items: center;
}

.sig-color-input-wrapper input[type="color"] {
    width: 40px;
    height: 40px;
    border: 1px solid #ddd;
    border-radius: 4px;
    cursor: pointer;
    transition: border-color 0.3s ease;
}

.sig-color-input-wrapper input[type="color"]:focus {
    outline: none;
    border-color: #3498db;
}

.sig-color-input-wrapper input[type="text"] {
    width: 80px;
    padding: 10px 12px;
    font-size: 14px;
    border: 1px solid #ddd;
    border-radius: 4px;
    transition: border-color 0.3s ease;
}

.sig-color-input-wrapper input[type="text"]:focus {
    outline: none;
    border-color: #3498db;
}

.sig-checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.sig-checkbox-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.sig-logo-position {
    margin-left: 20px;
    margin-top: 10px;
}

.sig-logo-position select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    transition: border-color 0.3s ease;
    margin-top: 5px;
}

.sig-logo-position select:focus {
    outline: none;
    border-color: #3498db;
}

/* Layout Grid */
.sig-layout-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 12px;
}

.sig-layout-option {
    background: #ffffff;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    padding: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
}

.sig-layout-option:hover {
    border-color: #3498db;
    box-shadow: 0 2px 8px rgba(52, 152, 219, 0.15);
    transform: translateY(-1px);
}

.sig-layout-option.active {
    border-color: #2c3e50;
    background: #f8f9fa;
    box-shadow: 0 0 0 2px rgba(44, 62, 80, 0.2);
}

.sig-layout-preview-container {
    width: 100%;
    height: 80px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 8px;
}

.sig-layout-preview {
    width: 60px;
    height: 72px;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    background: #ffffff;
}

.sig-layout-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.sig-layout-label {
    font-size: 12px;
    font-weight: 600;
    color: #2c3e50;
}

.sig-layout-description {
    font-size: 10px;
    color: #666;
    line-height: 1.2;
}

.sig-customizer-actions {
    display: flex;
    justify-content: space-between;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #e0e0e0;
}

/* Invoice Preview Styles */
.sig-invoice-preview {
    background: var(--background-color);
    padding: 40px;
    max-width: 800px;
    margin: 0 auto;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
    color: var(--text-color);
    font-family: var(--font-family);
}

.sig-invoice-header {
    margin-bottom: 30px;
}

.sig-header-content {
    display: flex;
    align-items: flex-start;
    gap: 30px;
}

.sig-header-content.sig-logo-left {
    flex-direction: row;
}

.sig-header-content.sig-logo-center {
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.sig-header-content.sig-logo-right {
    flex-direction: row-reverse;
}

.sig-company-logo img {
    max-width: 150px;
    max-height: 80px;
}

.sig-company-info h1 {
    margin: 0 0 10px 0;
    font-size: 24px;
    color: var(--primary-color);
}

.sig-company-info .sig-address {
    white-space: pre-line;
    margin: 10px 0;
}

.sig-contact-info {
    display: flex;
    flex-direction: column;
    gap: 5px;
    font-size: 14px;
    color: var(--secondary-color);
}

.sig-invoice-title {
    text-align: center;
    margin: 30px 0;
}

.sig-invoice-title h2 {
    font-size: 32px;
    color: var(--primary-color);
    margin: 0;
}

.sig-invoice-meta {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 30px;
}

.sig-bill-to h3,
.sig-invoice-details table {
    margin: 0 0 15px 0;
    color: var(--primary-color);
}

.sig-client-details {
    line-height: 1.6;
}

.sig-client-details strong {
    color: var(--primary-color);
}

.sig-invoice-details table {
    width: 100%;
}

.sig-invoice-details td {
    padding: 5px 0;
}

.sig-invoice-details td:first-child {
    color: var(--secondary-color);
}

.sig-invoice-details td:last-child {
    text-align: right;
}

.sig-invoice-items {
    margin: 30px 0;
}

.sig-invoice-items table {
    width: 100%;
    border-collapse: collapse;
}

.sig-invoice-items th {
    background: var(--primary-color);
    color: white;
    padding: 12px;
    text-align: left;
}

.sig-invoice-items th:last-child {
    text-align: right;
}

.sig-invoice-items td {
    padding: 12px;
    border-bottom: 1px solid var(--border-color);
}

.sig-item-description {
    white-space: pre-line;
}

.sig-item-quantity,
.sig-item-rate,
.sig-item-amount {
    text-align: right;
}

.sig-invoice-totals {
    display: flex;
    justify-content: flex-end;
    margin: 30px 0;
}

.sig-totals-container {
    width: 300px;
}

.sig-total-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
}

.sig-total-final {
    font-size: 18px;
    font-weight: bold;
    color: var(--primary-color);
}

.sig-invoice-additional {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
}

.sig-additional-section {
    margin-bottom: 20px;
}

.sig-additional-section h4 {
    margin: 0 0 10px 0;
    color: var(--primary-color);
}

.sig-additional-section p {
    white-space: pre-line;
    line-height: 1.6;
}

.sig-invoice-footer {
    text-align: center;
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    color: var(--secondary-color);
}

/* Export Controls */
.sig-export-controls {
    margin-top: 20px;
    text-align: center;
}

.sig-export-actions {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.sig-error-message {
    margin-top: 15px;
    padding: 10px;
    background: #fee;
    color: #c33;
    border-radius: 4px;
    font-size: 14px;
}

/* Layout Variations */
.sig-layout-compact .sig-invoice-preview {
    padding: 20px;
}

.sig-layout-compact .sig-invoice-title {
    margin: 15px 0;
}

.sig-layout-compact .sig-invoice-title h2 {
    font-size: 24px;
}

.sig-layout-detailed .sig-invoice-items td {
    padding: 15px;
}

.sig-layout-detailed .sig-additional-section {
    margin-bottom: 30px;
}

/* Modern Layout */
.sig-layout-modern .sig-invoice-preview {
    background: linear-gradient(135deg, var(--background-color) 0%, rgba(52, 152, 219, 0.05) 100%);
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.sig-layout-modern .sig-invoice-title h2 {
    font-size: 36px;
    font-weight: 300;
    letter-spacing: 2px;
}

.sig-layout-modern .sig-invoice-items th {
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 11px;
    font-weight: 700;
}

.sig-layout-modern .sig-company-info h1 {
    font-weight: 300;
    letter-spacing: 1px;
}

/* Classic Layout */
.sig-layout-classic .sig-invoice-preview {
    border: 3px double var(--border-color);
    background: var(--background-color);
}

.sig-layout-classic .sig-invoice-title {
    border-bottom: 2px solid var(--primary-color);
    border-top: 2px solid var(--primary-color);
    padding: 15px 0;
    margin: 20px 0;
}

.sig-layout-classic .sig-invoice-title h2 {
    font-family: serif;
    font-weight: bold;
    text-decoration: underline;
}

.sig-layout-classic .sig-company-info h1 {
    font-family: serif;
    font-weight: bold;
}

.sig-layout-classic .sig-invoice-items th {
    border-bottom: 2px solid var(--primary-color);
    border-top: 2px solid var(--primary-color);
    background: transparent;
    color: var(--primary-color);
    font-weight: bold;
}

/* Minimal Layout */
.sig-layout-minimal .sig-invoice-preview {
    padding: 60px;
    background: var(--background-color);
    box-shadow: none;
    border: 1px solid var(--border-color);
}

.sig-layout-minimal .sig-invoice-title {
    text-align: left;
    margin: 40px 0;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

.sig-layout-minimal .sig-invoice-title h2 {
    font-size: 28px;
    font-weight: 400;
    margin: 0;
    color: var(--text-color);
}

.sig-layout-minimal .sig-invoice-items th {
    background: transparent;
    color: var(--text-color);
    border-bottom: 2px solid var(--border-color);
    font-weight: 600;
    padding: 8px 12px;
}

.sig-layout-minimal .sig-invoice-items td {
    border-bottom: 1px solid #f0f0f0;
    padding: 10px 12px;
}

.sig-layout-minimal .sig-company-info h1 {
    font-weight: 400;
    color: var(--text-color);
}

/* Responsive Breakpoints */

/* Large tablets and small desktops */
@media (max-width: 1024px) {
    .sig-customizer-panel {
        width: 350px;
    }
    
    .sig-layout-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    }
    
    .sig-color-schemes {
        justify-content: center;
    }
}

/* Tablets */
@media (max-width: 968px) {
    .sig-edit-mode {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .sig-invoice-preview {
        padding: 30px 20px;
    }
    
    .sig-header-content {
        flex-direction: column !important;
        align-items: center !important;
        text-align: center;
        gap: 20px;
    }
    
    .sig-invoice-meta {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .sig-totals-container {
        width: 100%;
    }
    
    .sig-invoice-totals {
        justify-content: center;
    }
}

/* Mobile devices */
@media (max-width: 768px) {
    .sig-invoice-generator-container {
        padding: 10px;
        margin: 0;
    }
    
    .sig-content {
        padding: 20px 15px;
    }
    
    .sig-header {
        flex-direction: column;
        gap: 15px;
        padding: 15px 20px;
    }
    
    .sig-header h2 {
        font-size: 20px;
        text-align: center;
    }
    
    .sig-header-actions {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .sig-tab-switcher {
        width: 100%;
        max-width: 300px;
    }
    
    .sig-tab {
        padding: 10px 15px;
        font-size: 13px;
        flex: 1;
        text-align: center;
    }
    
    .sig-section {
        padding: 15px;
        margin-bottom: 15px;
    }
    
    .sig-section h3 {
        font-size: 16px;
    }
    
    .sig-form-row {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    .sig-form-group {
        margin-bottom: 15px;
    }
    
    .sig-form-group input,
    .sig-form-group textarea,
    .sig-form-group select {
        padding: 12px;
        font-size: 16px; /* Prevent zoom on iOS */
    }
    
    /* Table responsiveness - Card Layout on Mobile */
    .sig-table-wrapper {
        overflow: visible;
        margin: 0 -15px;
        padding: 0 15px;
    }
    
    /* Hide table headers on mobile */
    .sig-line-items-table thead {
        display: none;
    }
    
    /* Convert table to card layout */
    .sig-line-items-table {
        display: block;
        width: 100%;
    }
    
    .sig-line-items-table tbody {
        display: block;
    }
    
    .sig-line-items-table tr {
        display: block;
        margin-bottom: 15px;
        background: #fff;
        border: 1px solid #e0e0e0;
        border-radius: 8px;
        padding: 15px;
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
        position: relative;
    }
    
    .sig-line-items-table td {
        display: block;
        text-align: left;
        padding: 8px 0;
        border: none;
        position: relative;
        padding-left: 35%;
    }
    
    .sig-line-items-table td:before {
        content: attr(data-label);
        position: absolute;
        left: 0;
        width: 30%;
        padding-right: 10px;
        font-weight: 600;
        font-size: 12px;
        color: #555;
    }
    
    /* Special handling for drag handle */
    .sig-drag-cell {
        display: none;
    }
    
    /* Description field full width */
    .sig-description-cell {
        padding-left: 0 !important;
    }
    
    .sig-description-cell:before {
        position: static;
        display: block;
        margin-bottom: 5px;
        width: 100%;
    }
    
    .sig-description-cell textarea {
        width: 100%;
        min-width: unset;
        font-size: 14px;
        padding: 10px;
        margin-top: 5px;
    }
    
    /* Quantity and Rate inputs */
    .sig-quantity-cell,
    .sig-rate-cell {
        display: inline-block;
        width: 48%;
    }
    
    .sig-quantity-cell input,
    .sig-rate-cell input {
        width: 100%;
        padding: 8px;
        font-size: 14px;
    }
    
    /* Amount display */
    .sig-amount-cell {
        font-weight: 600;
        font-size: 16px;
        color: #2c3e50;
        padding-top: 12px;
        border-top: 1px solid #e0e0e0;
        margin-top: 8px;
    }
    
    /* Remove button positioning */
    .sig-actions-cell {
        position: absolute;
        top: 10px;
        right: 10px;
        padding: 0 !important;
        width: auto;
    }
    
    .sig-actions-cell:before {
        display: none;
    }
    
    .sig-btn-remove {
        width: 28px;
        height: 28px;
        font-size: 18px;
        border-radius: 50%;
    }
    
    /* Add new item button */
    .sig-btn-add-item {
        margin-top: 20px;
        padding: 15px;
        font-size: 14px;
        border-radius: 8px;
    }
    
    /* Calculations panel */
    .sig-calculations-grid {
        padding: 15px;
    }
    
    .sig-calc-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
        padding: 12px 0;
    }
    
    .sig-calc-label-group {
        width: 100%;
        justify-content: space-between;
    }
    
    .sig-discount-controls,
    .sig-tax-controls {
        width: 100%;
        justify-content: flex-end;
        gap: 8px;
        flex-wrap: wrap;
    }
    
    .sig-discount-input,
    .sig-tax-input,
    .sig-shipping-input {
        width: 70px !important;
        padding: 8px !important;
        font-size: 14px !important;
    }
    
    .sig-discount-type {
        width: 50px !important;
        padding: 8px !important;
        font-size: 13px !important;
    }
    
    .sig-shipping-description {
        width: 120px !important;
        padding: 8px !important;
        font-size: 13px !important;
    }
    
    /* Customizer panel on mobile */
    .sig-customizer-panel {
        width: 100%;
        height: 100vh;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 9999;
    }
    
    .sig-customizer-content {
        padding: 15px;
    }
    
    .sig-customizer-section {
        margin-bottom: 25px;
    }
    
    .sig-layout-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .sig-layout-option {
        padding: 10px;
    }
    
    .sig-layout-preview-container {
        height: 60px;
    }
    
    .sig-layout-preview {
        width: 45px;
        height: 54px;
    }
    
    .sig-layout-label {
        font-size: 11px;
    }
    
    .sig-layout-description {
        font-size: 9px;
    }
    
    .sig-color-schemes {
        grid-template-columns: repeat(3, 1fr);
        gap: 6px;
    }
    
    .sig-color-scheme-btn {
        width: 60px;
        height: 40px;
        font-size: 9px;
    }
    
    /* Export actions */
    .sig-export-actions {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }
    
    .sig-btn {
        padding: 12px 16px;
        font-size: 14px;
        justify-content: center;
    }
    
    /* Invoice preview on mobile */
    .sig-invoice-preview {
        padding: 20px 15px;
        margin: 0 -15px;
        box-shadow: none;
        border-radius: 0;
    }
    
    .sig-invoice-title h2 {
        font-size: 24px;
    }
    
    .sig-company-logo img {
        max-width: 120px;
        max-height: 60px;
    }
    
    .sig-company-info h1 {
        font-size: 18px;
    }
    
    .sig-contact-info {
        font-size: 13px;
    }
    
    .sig-invoice-details table {
        font-size: 13px;
    }
    
    /* Invoice preview table responsiveness */
    .sig-invoice-items {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        margin: 0 -15px;
        padding: 0 15px;
        position: relative;
    }
    
    /* Scroll indicator for tables */
    .sig-invoice-items:before {
        content: '← Scroll →';
        position: absolute;
        top: 50%;
        right: 10px;
        transform: translateY(-50%);
        background: rgba(0, 0, 0, 0.7);
        color: white;
        padding: 5px 10px;
        border-radius: 4px;
        font-size: 11px;
        pointer-events: none;
        opacity: 0;
        transition: opacity 0.3s;
        z-index: 10;
    }
    
    .sig-invoice-items.scrollable:before {
        opacity: 1;
    }
    
    .sig-invoice-items table {
        min-width: 500px;
    }
    
    .sig-invoice-items th,
    .sig-invoice-items td {
        padding: 8px 6px;
        font-size: 13px;
        white-space: nowrap;
    }
    
    .sig-item-description {
        white-space: normal !important;
        min-width: 150px;
    }
    
    .sig-total-final {
        font-size: 16px;
    }
    
    /* Logo upload on mobile */
    .sig-logo-upload {
        padding: 20px;
    }
    
    .sig-logo-preview img {
        max-width: 150px;
        max-height: 75px;
    }
}

/* Small mobile devices */
@media (max-width: 480px) {
    /* Invoice items table - convert to stacked layout */
    .sig-invoice-items {
        overflow: visible;
        margin: 0;
        padding: 0;
    }
    
    .sig-invoice-items:before {
        display: none;
    }
    
    .sig-invoice-items table {
        min-width: unset;
        width: 100%;
    }
    
    .sig-invoice-items thead {
        display: none;
    }
    
    .sig-invoice-items tbody tr {
        display: block;
        margin-bottom: 12px;
        padding: 12px;
        background: #f9f9f9;
        border: 1px solid #e0e0e0;
        border-radius: 6px;
    }
    
    .sig-invoice-items tbody td {
        display: block;
        text-align: left;
        padding: 6px 0;
        white-space: normal;
        font-size: 13px;
    }
    
    .sig-invoice-items tbody td:before {
        content: attr(data-label);
        font-weight: 600;
        display: inline-block;
        width: 80px;
        margin-right: 10px;
        color: #555;
        font-size: 12px;
    }
    
    .sig-item-description {
        font-weight: 600;
        margin-bottom: 8px;
        padding-bottom: 8px;
        border-bottom: 1px solid #ddd;
    }
    
    .sig-item-description:before {
        display: none;
    }
    
    .sig-item-amount {
        text-align: left !important;
        font-weight: 600;
        color: #2c3e50;
        font-size: 14px;
        padding-top: 8px;
        border-top: 1px solid #ddd;
        margin-top: 8px;
    }

@media (max-width: 480px) {
    .sig-invoice-generator-container {
        padding: 5px;
    }
    
    .sig-content {
        padding: 15px 10px;
    }
    
    .sig-header {
        padding: 12px 15px;
    }
    
    .sig-header h2 {
        font-size: 18px;
    }
    
    .sig-section {
        padding: 12px;
    }
    
    .sig-section h3 {
        font-size: 15px;
    }
    
    .sig-tab {
        padding: 8px 12px;
        font-size: 12px;
    }
    
    .sig-form-group input,
    .sig-form-group textarea,
    .sig-form-group select {
        padding: 10px;
    }
    
    .sig-line-items-table th,
    .sig-line-items-table td {
        padding: 6px 4px;
        font-size: 12px;
    }
    
    .sig-description-cell textarea {
        min-width: 120px;
        padding: 6px;
        font-size: 13px;
    }
    
    .sig-quantity-cell input,
    .sig-rate-cell input {
        width: 50px;
        padding: 6px 4px;
        font-size: 12px;
    }
    
    .sig-calculations-grid {
        padding: 12px;
    }
    
    .sig-discount-input,
    .sig-tax-input,
    .sig-shipping-input {
        width: 60px !important;
        font-size: 13px !important;
    }
    
    .sig-shipping-description {
        width: 100px !important;
        font-size: 12px !important;
    }
    
    .sig-invoice-preview {
        padding: 15px 10px;
    }
    
    .sig-invoice-title h2 {
        font-size: 20px;
    }
    
    .sig-company-info h1 {
        font-size: 16px;
    }
    
    .sig-contact-info,
    .sig-invoice-details table {
        font-size: 12px;
    }
    
    .sig-invoice-items th,
    .sig-invoice-items td {
        padding: 6px 4px;
        font-size: 12px;
    }
    
    .sig-layout-grid {
        grid-template-columns: 1fr;
    }
    
    .sig-color-schemes {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .sig-btn {
        padding: 10px 14px;
        font-size: 13px;
    }
}

/* Landscape orientation adjustments */
@media (max-width: 768px) and (orientation: landscape) {
    .sig-customizer-panel {
        height: 100vh;
        overflow-y: auto;
    }
    
    .sig-header {
        flex-direction: row;
        justify-content: space-between;
    }
    
    .sig-header h2 {
        text-align: left;
    }
    
    .sig-header-actions {
        justify-content: flex-end;
    }
    
    .sig-tab-switcher {
        width: auto;
    }
}

/* High DPI displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .sig-logo-preview img,
    .sig-company-logo img {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* Print Styles */
@media print {
    .sig-invoice-preview {
        box-shadow: none;
        padding: 0;
    }
    
    .sig-no-print {
        display: none !important;
    }
}