/* 
=============================================================================
KANVA BOTANICALS QUOTE CALCULATOR - MODERN UI STYLES
=============================================================================
Modern, professional design with Kanva branding and Copper CRM inspiration
*/

/* Reset and Base Styles */
* {
    box-sizing: border-box;
}

:root {
    /* Brand Colors */
    --kanva-green: #93D500;
    --kanva-dark: #17351A;
    --kanva-light: #f8fdf8;
    --kanva-accent: #e8f5e8;
    --kanva-muted: #6b7280;
    
    /* Copper CRM Inspired Colors */
    --copper-blue: #2563eb;
    --copper-indigo: #4f46e5;
    --copper-gray: #6b7280;
    --copper-light-gray: #f9fafb;
    
    /* Modern UI Colors */
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Success/Error Colors */
    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;
    --info: var(--copper-blue);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-mono: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', monospace;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    
    /* Borders & Shadows */
    --border-radius: 0.5rem;
    --border-radius-lg: 0.75rem;
    --border-radius-xl: 1rem;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Additional Variables for Enhanced UI */
    --primary-color: var(--kanva-green);
    --primary-dark: #7bb600;
    --secondary-color: var(--copper-blue);
    --success-color: var(--success);
    --text-primary: var(--gray-800);
    --text-muted: var(--gray-500);
    --background-light: var(--gray-50);
    --border-color: var(--gray-200);
}

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* Base Body Styles */
body {
    font-family: var(--font-primary);
    font-size: 14px;
    line-height: 1.6;
    color: var(--gray-700);
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--kanva-light) 100%);
    margin: 0;
    padding: var(--space-lg);
    min-height: 100vh;
}

/* Main Container */
.calculator-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

/* Header Styles */
.app-header {
    background: #f8f9fa; /* Light gray background for better contrast */
    color: #333;
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
    border-bottom: 3px solid #2d5a27; /* Add Kanva green accent border */
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.kanva-logo {
    height: 80px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
    transition: transform 0.3s ease;
}

.kanva-logo:hover {
    transform: scale(1.05);
}

.header-text {
    flex: 1;
    min-width: 0; /* Allows text to shrink */
}

.app-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--kanva-dark);
    margin: 0 0 var(--space-sm) 0;
    line-height: 1.2;
    letter-spacing: -0.025em;
}

.app-subtitle {
    font-size: 1.125rem;
    color: var(--kanva-muted);
    margin: 0;
    font-weight: 400;
    line-height: 1.4;
}

/* Responsive Design */
@media (max-width: 768px) {
    .app-header {
        padding: var(--space-lg) var(--space-md);
    }
    
    .header-content {
        flex-direction: column;
        text-align: center;
        gap: var(--space-md);
    }
    
    .kanva-logo {
        height: 50px;
        max-width: 250px;
    }
    
    .app-title {
        font-size: 2rem;
    }
    
    .app-subtitle {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .header-content {
        gap: var(--space-sm);
    }
    
    .kanva-logo {
        height: 40px;
        max-width: 200px;
    }
    
    .app-title {
        font-size: 1.75rem;
    }
    
    .app-subtitle {
        font-size: 0.875rem;
    }
}

/* Card Layouts */
.card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--space-lg);
    overflow: hidden;
    transition: all 0.2s ease-in-out;
}

.card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--kanva-green);
}

.card-header {
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
    border-bottom: 1px solid var(--gray-200);
    padding: var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.card-header h3 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--gray-800);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.card-body {
    padding: var(--space-lg);
}

.card-footer {
    background: var(--gray-50);
    border-top: 1px solid var(--gray-200);
    padding: var(--space-lg);
}

/* Grid Layouts */
.grid {
    display: grid;
    gap: var(--space-lg);
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Form Elements */
.form-group {
    margin-bottom: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.form-group label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 14px;
}

.form-control, 
input[type="text"], 
input[type="email"], 
input[type="tel"], 
input[type="number"], 
select, 
textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    font-weight: 400;
    line-height: 1.5;
    color: var(--gray-700);
    background-color: var(--white);
    background-image: none;
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius);
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    transition: all 0.15s ease-in-out;
    font-family: var(--font-primary);
}

.form-control:focus, 
input[type="text"]:focus, 
input[type="email"]:focus, 
input[type="tel"]:focus, 
input[type="number"]:focus, 
select:focus, 
textarea:focus {
    outline: none;
    border-color: var(--kanva-green);
    box-shadow: 0 0 0 3px rgba(147, 213, 0, 0.1), 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    background-color: var(--white);
}

.form-control:hover:not(:focus), 
input[type="text"]:hover:not(:focus), 
input[type="email"]:hover:not(:focus), 
input[type="tel"]:hover:not(:focus), 
input[type="number"]:hover:not(:focus), 
select:hover:not(:focus), 
textarea:hover:not(:focus) {
    border-color: var(--gray-400);
}

.form-control::placeholder, 
input::placeholder, 
textarea::placeholder {
    color: var(--gray-400);
    opacity: 1;
}

.form-control:disabled, 
input:disabled, 
select:disabled, 
textarea:disabled {
    background-color: var(--gray-50);
    border-color: var(--gray-200);
    color: var(--gray-500);
    cursor: not-allowed;
    opacity: 0.6;
}

/* Input Groups */
.input-group {
    display: flex;
    align-items: center;
}

.input-group-text {
    background: var(--gray-100);
    border: 1px solid var(--border-color);
    border-right: none;
    padding: 12px;
    border-radius: var(--border-radius) 0 0 var(--border-radius);
    font-weight: 600;
    color: var(--text-muted);
}

.input-group input {
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    border-left: none;
}

/* Product Catalog */
.product-catalog {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-md);
}

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

/* Bottom Row - Side by Side */
.bottom-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
}

/* Full Width Sections */
.full-width-section {
    width: 100%;
}

/* Calculation Display */
.calculation-display {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.calc-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--border-color);
}

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

.calc-row.total-row {
    border-top: 2px solid var(--primary-color);
    margin-top: var(--space-sm);
    padding-top: var(--space-md);
    font-size: 1.1em;
    color: var(--primary-color);
}

/* Shipping Zone Info */
.shipping-zone-info {
    padding: var(--space-md);
    background: var(--background-light);
    border-radius: var(--border-radius);
    margin-bottom: var(--space-md);
}

/* Quote Generator */
.quote-generator {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.quote-actions {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

/* Alert Styling */
.alert {
    padding: var(--space-md);
    border-radius: var(--border-radius);
    border: 1px solid;
    margin-bottom: var(--space-md);
}

.alert-warning {
    background: #fef3c7;
    border-color: #f59e0b;
    color: #92400e;
}

.alert-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-md);
}

.alert-actions {
    display: flex;
    gap: var(--space-xs);
}

/* Responsive Design */
@media (max-width: 768px) {
    .calculator-container {
        padding: var(--space-md);
        gap: var(--space-md);
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .bottom-row {
        grid-template-columns: 1fr;
    }
    
    .quote-actions {
        flex-direction: column;
    }
    
    .alert-content {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* Form Grid for Customer Information */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-md);
}

/* Product Reference Tiles */
.product-catalog-section {
    margin-bottom: var(--space-lg);
}

.card-subtitle {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: normal;
}

.product-catalog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
    padding: var(--space-sm);
}

.product-tile {
    background: white;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 0;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    position: relative;
    height: 320px;
    display: flex;
    flex-direction: column;
}

.product-tile:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    border-color: var(--primary-color);
}

.product-tile.selected {
    border-color: var(--success-color);
    background: linear-gradient(135deg, #f8fff9 0%, #e8f5e8 100%);
    box-shadow: 0 4px 15px rgba(34, 197, 94, 0.2);
}

.product-image-container {
    height: 180px;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.product-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform 0.3s ease;
    padding: var(--space-sm);
}

.product-tile:hover .product-image {
    transform: scale(1.05);
}

.product-info {
    padding: var(--space-md);
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.product-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
    line-height: 1.3;
}

.product-description {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: var(--space-sm);
    line-height: 1.4;
    flex: 1;
}

.product-badges {
    display: flex;
    gap: var(--space-xs);
    margin-bottom: var(--space-sm);
    flex-wrap: wrap;
}

.product-badge {
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 10px;
    font-weight: 500;
    text-transform: uppercase;
}

.badge-bestseller {
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    color: white;
}

.badge-new {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
}

.badge-category {
    background: var(--secondary-color);
    color: white;
}

.product-pricing {
    background: var(--background-light);
    padding: var(--space-sm);
    border-radius: var(--border-radius);
    margin-top: auto;
}

.price-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2px;
    font-size: 0.85rem;
}

.price-row:last-child {
    margin-bottom: 0;
}

.price-label {
    color: var(--text-muted);
    font-weight: 500;
}

.price-value {
    color: var(--text-primary);
    font-weight: 600;
}

.price-primary {
    color: var(--primary-color);
    font-size: 0.9rem;
    font-weight: 700;
}

.add-to-quote-btn {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    width: 32px;
    height: 32px;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s ease;
    opacity: 0;
    transform: scale(0.8);
}

.product-tile:hover .add-to-quote-btn {
    opacity: 1;
    transform: scale(1);
}

.add-to-quote-btn:hover {
    background: var(--primary-dark);
    transform: scale(1.1);
}

.product-tile.selected .add-to-quote-btn {
    opacity: 1;
    background: var(--success-color);
    transform: scale(1);
}

@media (max-width: 768px) {
    .product-catalog-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: var(--space-md);
    }
    
    .product-tile {
        height: 280px;
    }
    
    .product-image-container {
        height: 140px;
    }
    
    .product-info {
        padding: var(--space-sm);
    }
    
    .product-name {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .product-catalog-grid {
        grid-template-columns: 1fr;
        gap: var(--space-sm);
    }
    
    .product-tile {
        height: 260px;
    }
    
    .product-image-container {
        height: 120px;
    }
}

/* Upsell Alert Styles */
.alert.alert-warning {
    background: linear-gradient(135deg, #fff3cd 0%, #ffeaa7 100%);
    border: 2px solid #ffc107;
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.alert-warning strong {
    color: #856404;
}

.alert-warning .btn {
    margin-left: 1rem;
    padding: 0.25rem 0.75rem;
    font-size: 0.875rem;
}

/* Product Line Styles */
.product-line {
    background: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1rem;
    position: relative;
}

.product-line-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.product-line-title {
    font-weight: 600;
    color: #495057;
}

.product-line-remove {
    background: #dc3545;
    color: white;
    border: none;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    font-size: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-line-remove:hover {
    background: #c82333;
}

.quantity-input-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.quantity-input {
    width: 80px;
    text-align: center;
}

.quantity-label {
    font-size: 0.875rem;
    color: #6c757d;
    min-width: 100px;
}

/* Card Header Improvements */
.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-bottom: 1px solid #dee2e6;
    border-radius: 8px 8px 0 0;
}

.card-header h3 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
    color: #495057;
}

.card-header .btn {
    margin: 0;
}

/* Empty State Styling */
.text-center {
    text-align: center;
}

.text-muted {
    color: #6c757d;
}

/* Responsive Grid for Product Reference */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

@media (max-width: 768px) {
    .grid-3 {
        grid-template-columns: 1fr;
    }
    
    .product-tile {
        margin: 0.25rem;
    }
}

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

.top-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
}

.bottom-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    margin-top: var(--space-lg);
}

.full-width-section {
    margin-top: var(--space-lg);
}

.left-column, .right-column, .bottom-left, .bottom-right {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

/* Responsive Layout */
@media (max-width: 768px) {
    .top-row, .bottom-row {
        grid-template-columns: 1fr;
    }
}

/* Line Item Details Table */
.line-items-table {
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    overflow: hidden;
    margin: 1rem 0;
}

.table-header {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr 1fr;
    gap: 1rem;
    background: #f9fafb;
    padding: 0.75rem 1rem;
    font-weight: 600;
    color: #374151;
    border-bottom: 1px solid #e5e7eb;
}

.table-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr 1fr;
    gap: 1rem;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid #f3f4f6;
    align-items: center;
}

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

.table-row.even {
    background: #fafafa;
}

.table-row.odd {
    background: white;
}

.col-product {
    display: flex;
    flex-direction: column;
}

.product-sku {
    color: #6b7280;
    font-size: 0.75rem;
    margin-top: 0.25rem;
}

.col-qty, .col-display, .col-price, .col-total {
    text-align: center;
    font-weight: 500;
}

.col-tier {
    text-align: center;
}

.tier-badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

/* Tier Progress Bar */
.tier-progress {
    margin-top: 1.5rem;
    padding: 0.75rem;
    background: var(--gray-50);
    border-radius: var(--border-radius);
    border: 1px solid var(--gray-200);
}

.progress-labels {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    color: var(--gray-600);
    font-weight: 500;
}

.progress-bar {
    height: 1.5rem;
    background: var(--gray-200);
    border-radius: 9999px;
    overflow: hidden;
    position: relative;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
}

.progress {
    height: 100%;
    background: linear-gradient(90deg, var(--kanva-green), #6ee7b7);
    border-radius: 9999px;
    transition: width 0.3s ease-in-out;
    position: relative;
    overflow: hidden;
}

.progress::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        90deg,
        rgba(255, 255, 255, 0.1) 0%,
        rgba(255, 255, 255, 0.3) 50%,
        rgba(255, 255, 255, 0.1) 100%
    );
    animation: shimmer 2s infinite linear;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.tier-progress-text {
    margin-top: 0.5rem;
    text-align: center;
    font-size: 0.875rem;
    color: var(--gray-700);
    font-weight: 500;
}

.tier-label {
    background: var(--kanva-dark);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
}

.tier-label:first-child {
    background: var(--kanva-green);
    color: var(--kanva-dark);
}

.tier-unit {
    background: #fee2e2;
    color: #dc2626;
}

.tier-display {
    background: #fef3c7;
    color: #d97706;
}

.tier-case {
    background: #dcfce7;
    color: #16a34a;
}

.tier-volume {
    background: #dbeafe;
    color: #2563eb;
}

.line-items-footer {
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid #e5e7eb;
}

.export-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.export-actions .btn {
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
}

.export-actions .btn-primary {
    background: #3b82f6;
    color: white;
}

.export-actions .btn-primary:hover {
    background: #2563eb;
    transform: translateY(-1px);
}

.export-actions .btn-secondary {
    background: #6b7280;
    color: white;
}

.export-actions .btn-secondary:hover {
    background: #4b5563;
    transform: translateY(-1px);
}

@media (max-width: 768px) {
    .table-header, .table-row {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }
    
    .table-header > div, .table-row > div {
        padding: 0.25rem 0;
    }
    
    .export-actions {
        flex-direction: column;
    }
}

/* Line Items Table - SO Format */
.line-items-table-container {
    width: 100%;
    overflow-x: auto;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    background: var(--white);
}

.line-items-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.line-items-table thead {
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--gray-200) 100%);
    border-bottom: 2px solid var(--border-color);
}

.line-items-table th {
    padding: 12px 8px;
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    border-right: 1px solid var(--border-color);
}

.line-items-table th:last-child {
    border-right: none;
}

.line-items-table tbody tr {
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.2s ease;
}

.line-items-table tbody tr:hover {
    background-color: var(--background-light);
}

.line-items-table tbody tr:last-child {
    border-bottom: none;
}

.line-items-table td {
    padding: 12px 8px;
    vertical-align: top;
    border-right: 1px solid var(--border-color);
}

.line-items-table td:last-child {
    border-right: none;
}

/* Column Specific Styles */
.col-thumbnail {
    width: 80px;
    text-align: center;
}

.product-thumbnail {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.col-item {
    min-width: 150px;
}

.col-item-number {
    min-width: 120px;
    font-family: var(--font-mono);
    color: var(--text-muted);
}

.col-description {
    min-width: 200px;
    max-width: 300px;
}

.col-quantity {
    min-width: 140px;
}

.quantity-info div {
    margin-bottom: 2px;
}

.quantity-info div:last-child {
    margin-bottom: 0;
}

.col-unit-price, .col-line-total {
    min-width: 100px;
    text-align: right;
    font-family: var(--font-mono);
}

.col-line-total strong {
    color: var(--primary-color);
    font-size: 1.1em;
}

.col-actions {
    width: 60px;
    text-align: center;
}

/* Delete Button */
.btn-delete-line {
    background: var(--error);
    color: white;
    border: none;
    border-radius: 50%;
    width: 32px;
    height: 32px;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-delete-line:hover {
    background: #dc2626;
    transform: scale(1.1);
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.3);
}

/* Tier Summary */
.tier-summary {
    margin-top: 16px;
    padding: 12px;
    background: linear-gradient(135deg, var(--kanva-light) 0%, var(--kanva-accent) 100%);
    border-radius: var(--border-radius);
    border: 1px solid var(--kanva-green);
}

.tier-badge {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.tier-label {
    background: var(--primary-color);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
}

.tier-discount {
    color: var(--success-color);
    font-weight: 600;
}

.tier-volume {
    color: var(--text-muted);
    font-size: 14px;
}

/* Empty State */
.empty-line-items {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--kanva-light) 0%, var(--white) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 1;
    transition: opacity 0.5s ease-out;
}

.loading-container {
    text-align: center;
    padding: var(--space-xl);
}

.kanva-logo-loader {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
}

.logo-circle {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--kanva-orange) 0%, var(--kanva-green) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    animation: logoGlow 2s ease-in-out infinite;
    box-shadow: 0 8px 32px rgba(255, 165, 0, 0.3);
}

.logo-circle::before {
    content: '';
    position: absolute;
    top: -4px;
    left: -4px;
    right: -4px;
    bottom: -4px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--kanva-orange), var(--kanva-green));
    z-index: -1;
    animation: logoRotate 3s linear infinite;
    opacity: 0.6;
}

.logo-inner {
    width: 68px;
    height: 68px;
    border-radius: 50%;
    background: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.1);
}

.logo-text {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 28px;
    font-weight: 700;
    color: var(--kanva-orange);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.loading-dots {
    display: flex;
    gap: 8px;
    justify-content: center;
    align-items: center;
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--kanva-green);
    animation: dotBounce 1.4s ease-in-out infinite both;
}

.dot:nth-child(1) {
    animation-delay: -0.32s;
}

.dot:nth-child(2) {
    animation-delay: -0.16s;
}

.dot:nth-child(3) {
    animation-delay: 0s;
}

.loading-text {
    color: var(--kanva-dark);
    font-weight: 500;
    font-size: 1.1rem;
    margin-top: var(--space-lg);
    opacity: 0.8;
}

@keyframes logoGlow {
    0%, 100% {
        box-shadow: 0 8px 32px rgba(255, 165, 0, 0.3);
        transform: scale(1);
    }
    50% {
        box-shadow: 0 12px 40px rgba(255, 165, 0, 0.5);
        transform: scale(1.05);
    }
}

@keyframes logoRotate {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

@keyframes dotBounce {
    0%, 80%, 100% {
        transform: scale(0.8);
        opacity: 0.5;
    }
    40% {
        transform: scale(1.2);
        opacity: 1;
    }
}

/* Modal Styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
}

.modal-content {
    background: var(--white);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-xl);
    max-width: 90vw;
    max-height: 90vh;
    overflow: hidden;
    animation: fadeIn 0.3s ease-out;
}

.modal-header {
    background: var(--gray-50);
    border-bottom: 1px solid var(--gray-200);
    padding: var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: between;
}

.modal-header h3 {
    margin: 0;
    flex: 1;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--gray-500);
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s ease-in-out;
}

.modal-close:hover {
    background: var(--gray-100);
    color: var(--gray-700);
}

.modal-body {
    padding: var(--space-lg);
    max-height: auto;
    overflow-y: auto;
}

/* Tab Content */
.tab-content {
    margin-top: var(--space-lg);
    overflow: visible;
    height: auto;
    min-height: 300px;
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }

.hidden { display: none !important; }
.block { display: block !important; }
.inline-block { display: inline-block !important; }

.w-full { width: 100%; }
.h-full { height: 100%; }

.m-0 { margin: 0; }
.mt-auto { margin-top: auto; }
.mb-auto { margin-bottom: auto; }

/* Product Line Styles */
.product-line {
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius);
    padding: var(--space-lg);
    margin-bottom: var(--space-md);
}

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

.product-line-header h4 {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-800);
}

.remove-line-btn {
    background: var(--error);
    color: var(--white);
    border: none;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--border-radius);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
}

.remove-line-btn:hover {
    background: #dc2626;
    transform: translateY(-1px);
}

/* Calculation Display Styles */
.calculation-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid #e5e7eb;
}

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

.calculation-row.total-row {
    border-top: 1px solid #e5e7eb;
    padding-top: 0.75rem;
    margin-top: 0.5rem;
    font-size: 1.1em;
}

/* Payment Methods Section */
.payment-section {
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px dashed #e5e7eb;
}

.payment-methods {
    background-color: #f9fafb;
    border-radius: 0.5rem;
    padding: 1rem;
    margin-top: 0.5rem;
}

.payment-methods h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: #374151;
}

.payment-method {
    margin-bottom: 0.5rem;
}

.payment-method label {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    border-radius: 0.375rem;
    cursor: pointer;
    transition: all 0.2s ease;
    background-color: white;
    border: 1px solid #e5e7eb;
}

.payment-method label:hover {
    background-color: #f3f4f6;
}

.payment-method input[type="radio"] {
    margin-right: 0.75rem;
    width: 1rem;
    height: 1rem;
    cursor: pointer;
}

.payment-method .fee-note {
    font-size: 0.75rem;
    color: #6b7280;
    margin-left: 0.25rem;
}

.payment-method.selected label {
    background-color: #ecfdf5;
    border-color: #10b981;
    box-shadow: 0 0 0 1px #10b981;
}

/* Payment Methods Card */
.payment-methods-card {
    flex: 1;
    min-width: 300px;
}

.payment-options {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.payment-option {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius);
    background: var(--white);
    cursor: pointer;
    transition: all 0.2s ease;
}

.payment-option:hover {
    border-color: var(--kanva-green);
    background-color: var(--kanva-light);
}

.payment-option.selected {
    border-color: var(--kanva-green);
    background-color: rgba(147, 213, 0, 0.05);
    box-shadow: 0 0 0 1px var(--kanva-green);
}

.payment-option input[type="radio"] {
    margin-right: 0.75rem;
    accent-color: var(--kanva-green);
}

.payment-option .payment-details {
    flex-grow: 1;
}

.payment-option .payment-title {
    font-weight: 500;
    color: var(--gray-800);
    margin-bottom: 0.25rem;
}

.payment-option .payment-fee {
    font-size: 0.75rem;
    color: var(--gray-500);
}

.payment-option .payment-badge {
    margin-left: 0.5rem;
    font-size: 0.7rem;
    padding: 0.15rem 0.4rem;
    border-radius: 9999px;
    background-color: var(--kanva-green);
    color: white;
    font-weight: 600;
}

/* Enhanced Tier Info Styling */
.tier-info {
    margin-top: 1.25rem;
    padding: 1rem;
    background-color: #f8fafc;
    border-radius: 0.5rem;
    border: 1px solid #e2e8f0;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    font-size: 0.875rem;
    color: var(--gray-700);
}

.tier-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid #e2e8f0;
}

.tier-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--kanva-dark);
}

.tier-margin {
    font-size: 0.8rem;
    color: #4f46e5;
    background-color: #eef2ff;
    padding: 0.2rem 0.5rem;
    border-radius: 9999px;
    font-weight: 600;
}

.tier-details {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.tier-row {
    display: flex;
    justify-content: space-between;
    padding: 0.25rem 0;
}

.tier-row.highlight {
    margin-top: 0.5rem;
    padding-top: 0.5rem;
    border-top: 1px dashed #e2e8f0;
    font-weight: 600;
    color: var(--kanva-dark);
}

.tier-progress {
    margin-top: 1rem;
    padding-top: 0.75rem;
    border-top: 1px solid #e2e8f0;
}

.progress-bar {
    height: 6px;
    background-color: #e2e8f0;
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress {
    height: 100%;
    background: linear-gradient(90deg, var(--kanva-green), #4ade80);
    transition: width 0.3s ease;
}

.tier-progress-text {
    font-size: 0.75rem;
    color: #64748b;
    text-align: center;
}

.tier-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.6rem;
    border-radius: 9999px;
    background: linear-gradient(135deg, var(--kanva-green), #4ade80);
    color: white;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

.payment-info-note {
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-top: 0.75rem;
    padding: 0.75rem;
    background-color: var(--gray-50);
    border-radius: var(--border-radius);
    border-left: 3px solid var(--kanva-green);
    border-radius: 0.375rem;
    display: flex;
    align-items: center;
}

.payment-info-note i {
    margin-right: 0.5rem;
    color: #6b7280;
}

.calculation-label {
    color: #374151;
}

.calculation-value {
    color: #059669;
    font-weight: 500;
}

.tier-info {
    background: #f0f9ff;
    border: 1px solid #0ea5e9;
    border-radius: 6px;
    padding: 0.75rem;
    margin-top: 1rem;
    color: #0c4a6e;
    font-size: 0.875rem;
}

/* Product Line Styles */
.product-line {
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1rem;
}

.product-line:hover {
    border-color: #d1d5db;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.remove-line-btn {
    background: #fee2e2;
    color: #dc2626;
    border: 1px solid #fecaca;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s;
}

.remove-line-btn:hover {
    background: #fecaca;
    border-color: #f87171;
}

/* Form Styles */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #374151;
}

.form-control, .form-select {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 0.875rem;
    transition: border-color 0.2s;
}

.form-control:focus, .form-select:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1);
}

/* Discounted Price Styling */
.original-price {
    text-decoration: line-through;
    color: #6b7280;
    font-size: 0.9em;
    display: block;
    line-height: 1.2;
}

.discounted-price {
    color: #10b981;
    font-weight: 600;
    font-size: 1.1em;
    display: block;
    line-height: 1.3;
}

.col-unit-price {
    white-space: nowrap;
}

.col-line-total {
    white-space: nowrap;
}

.tier-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8em;
    padding: 2px 8px;
    border-radius: 4px;
    background-color: #f0fdf4;
    color: #065f46;
    border: 1px solid #a7f3d0;
    margin-left: 8px;
}

.tier-label {
    font-weight: 600;
}

.tier-discount {
    color: #065f46;
}

.tier-volume {
    color: #047857;
    font-size: 0.9em;
}

/* Product Tile Highlight Animation */
.product-tile {
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.product-tile.product-added {
    transform: scale(0.98);
    box-shadow: 0 0 0 2px var(--kanva-green), 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.product-tile.product-added::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(147, 213, 0, 0.1);
    z-index: 1;
    pointer-events: none;
    animation: fadeOut 1s ease-out forwards;
}

@keyframes fadeOut {
    to {
        background: transparent;
    }
}

/* Green Bar Notification */
#greenBarNotification {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--success);
    color: white;
    padding: 12px 24px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    font-weight: 500;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
    opacity: 1;
    transition: opacity 0.3s ease-in-out, transform 0.3s ease-in-out;
    animation: slideUp 0.3s ease-out;
}

#greenBarNotification::before {
    content: '✓';
    font-size: 16px;
    font-weight: bold;
}

@keyframes slideUp {
    from {
        transform: translate(-50%, 20px);
        opacity: 0;
    }
    to {
        transform: translate(-50%, 0);
        opacity: 1;
    }
}

.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-check-input {
    width: 1rem;
    height: 1rem;
}

.form-check-label {
    margin-bottom: 0;
    cursor: pointer;
}

/* Grid Layouts */
.grid {
    display: grid;
    gap: 1rem;
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

@media (max-width: 768px) {
    .grid-2, .grid-3 {
        grid-template-columns: 1fr;
    }
    
    .product-tile {
        margin: 0.25rem;
    }
}

/* Pricing Override Styles */
.price-override-indicator {
    color: #f59e0b;
    font-size: 0.8em;
    margin-left: 4px;
}

.price-overridden {
    background: #fef3c7 !important;
    border-color: #f59e0b !important;
}

.price-overridden:focus {
    border-color: #d97706 !important;
    box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.1) !important;
}

.btn-link {
    background: none;
    border: none;
    color: var(--primary-color);
    text-decoration: underline;
    cursor: pointer;
    font-size: 0.8em;
    padding: 0;
    margin-left: 8px;
}

.btn-link:hover {
    color: var(--primary-dark);
    text-decoration: none;
}

/* Grid Layout for Product Lines */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

@media (max-width: 1024px) {
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .grid-3 {
        grid-template-columns: 1fr;
    }
}

/* Admin Panel - Bottom */
.admin-panel-bottom {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: white;
    border-top: 2px solid #e5e7eb;
    box-shadow: 0 -4px 6px -1px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.admin-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1rem;
    background: #f8fafc;
    border-bottom: 1px solid #e5e7eb;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 0.875rem;
    color: #6b7280;
}

.admin-toggle:hover {
    background: #f1f5f9;
    color: #374151;
}

.admin-cog {
    font-size: 1rem;
    margin-right: 0.5rem;
}

.admin-text {
    font-weight: 500;
}

.admin-content {
    padding: 1rem;
    background: white;
    max-height: 300px;
    overflow-y: auto;
}

.admin-content .form-group {
    margin-bottom: 1rem;
}

.admin-content .btn {
    margin-right: 0.5rem;
    margin-bottom: 0.5rem;
}

/* Add padding to body when admin panel is visible */
body.admin-panel-open {
    padding-bottom: 60px;
}

/* Admin Modal Styles */
.admin-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.admin-modal-content {
    background: white;
    border-radius: 8px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    max-width: 800px;
    width: 90%;
    max-height: 90%;
    overflow-y: auto;
}

.admin-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid #e5e7eb;
    background: #f8fafc;
    border-radius: 8px 8px 0 0;
}

.admin-modal-header h3 {
    margin: 0;
    color: #374151;
}

.admin-modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #6b7280;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.admin-modal-close:hover {
    color: #374151;
}

.admin-modal-body {
    padding: 1.5rem;
}

.admin-manager {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.admin-section {
    border: 1px solid #e5e7eb;
    border-radius: 6px;
    padding: 1rem;
}

.admin-section h4 {
    margin: 0 0 1rem 0;
    color: #374151;
    font-size: 1.1rem;
}

.product-list, .tier-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.product-item, .tier-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: #f8fafc;
    border: 1px solid #e5e7eb;
    border-radius: 4px;
}

.product-info, .tier-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.product-price, .tier-details {
    font-size: 0.875rem;
    color: #6b7280;
}

.product-actions, .tier-actions {
    display: flex;
    gap: 0.5rem;
}

.admin-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
    padding-top: 1rem;
    border-top: 1px solid #e5e7eb;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.25rem;
    font-weight: 500;
    color: #374151;
}

.form-control {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid #d1d5db;
    border-radius: 4px;
    font-size: 0.875rem;
}

.form-control:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1);
}

.btn {
    padding: 0.5rem 1rem;
    border: 1px solid transparent;
    border-radius: 4px;
    font-size: 0.875rem;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: all 0.2s;
}

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
}

.btn-primary {
    background: #3b82f6;
    color: white;
}

.btn-primary:hover {
    background: #2563eb;
}

.btn-success {
    background: #10b981;
    color: white;
}

.btn-success:hover {
    background: #059669;
}

.btn-secondary {
    background: #6b7280;
    color: white;
}

.btn-secondary:hover {
    background: #4b5563;
}

.btn-outline-primary {
    border-color: #3b82f6;
    color: #3b82f6;
    background: white;
}

.btn-outline-primary:hover {
    background: #3b82f6;
    color: white;
}

.btn-outline-danger {
    border-color: #ef4444;
    color: #ef4444;
    background: white;
}

.btn-outline-danger:hover {
    background: #ef4444;
    color: white;
}

/* Form Groups */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--gray-700);
    line-height: 1.25;
}

.form-group .form-text {
    margin-top: 0.25rem;
    font-size: 0.75rem;
    color: var(--gray-500);
}

/* Select Dropdown Styling */
select {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.5rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: 2.5rem;
    appearance: none;
    cursor: pointer;
}

select:focus {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%2393D500' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
}

/* Pricing Override Styles */
.price-overridden {
    border-color: var(--warning) !important;
    background-color: #fffbeb !important;
    box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.1) !important;
}

.price-overridden:focus {
    border-color: var(--warning) !important;
    box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.2) !important;
}

/* Customer Information Form Styling */
.customer-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

/* Responsive Form Layout */
@media (max-width: 768px) {
    .customer-info-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .form-control, 
    input, 
    select, 
    textarea {
        font-size: 16px; /* Prevents zoom on iOS */
    }
}

/* Shipping Zone Display */
.shipping-zone-details {
    padding: 1rem;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border-radius: var(--border-radius);
    border: 1px solid var(--gray-200);
}

.zone-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.75rem;
}

.zone-name {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--gray-800);
}

.zone-color {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 2px solid var(--white);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.zone-info p {
    margin: 0.25rem 0;
    font-size: 0.875rem;
    color: var(--gray-600);
}

.zone-info strong {
    color: var(--gray-800);
}

/* Alert Styling */
.alert {
    padding: 1rem;
    border-radius: var(--border-radius);
    border: 1px solid transparent;
    margin: 1rem 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.alert-warning {
    background-color: #fffbeb;
    border-color: #fed7aa;
    color: #92400e;
}

.alert-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    gap: 1rem;
}

.alert-actions {
    display: flex;
    gap: 0.5rem;
    flex-shrink: 0;
}

.alert-actions .btn {
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
    border-radius: 0.375rem;
}

/* Empty State Styling */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--gray-500);
    background: var(--gray-50);
    border-radius: var(--border-radius);
    border: 2px dashed var(--gray-300);
}

.empty-state p {
    margin: 0;
    font-size: 1rem;
}

/* Calculation Display Improvements */
.calculation-display {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 1rem;
}

.calc-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--gray-100);
}

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

.calc-row.total-row {
    border-top: 2px solid var(--gray-300);
    margin-top: 0.5rem;
    padding-top: 1rem;
    font-size: 1.1rem;
}

.calc-row span:last-child {
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', monospace;
    color: var(--kanva-green);
    font-weight: 600;
}

.calc-row.total-row span:last-child {
    color: var(--gray-900);
    font-size: 1.25rem;
}