body {
    font-family: Arial, sans-serif;
    padding: 20px;
    background: linear-gradient(to right, #f8f9fa, #e3f2fd); /* Light gradient */
    color: #333;
    margin: 0;
}

h1 {
    text-align: center;
    color: #2c3e50;
}

.product-grid {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 30px;
}

.product-card {
    border: 1px solid #ccc;
    padding: 15px;
    background-color: white;
    border-radius: 10px;
    text-align: center;
    width: 200px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s;
}

.product-card:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #007bff;
    padding: 15px 30px;
    color: white;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.navbar-logo {
    font-size: 20px;
    font-weight: bold;
}

.navbar-links {
    list-style: none;
    display: flex;
    gap: 20px;
    margin: 0;
    padding: 0;
}

.navbar-links li a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.navbar-links li a:hover {
    color: #ffe600;
}
.hero {
  background: url('/images/hero-bg.jpg') center/cover no-repeat;
  color: white;
  text-align: center;
  padding: 80px 20px;
}
.hero h1 {
  font-size: 48px;
  margin-bottom: 20px;
}
.btn-primary {
  background-color: #ff5722;
  color: white;
  padding: 15px 30px;
  border: none;
  border-radius: 25px;
  font-size: 18px;
  text-decoration: none;
}
.btn-primary:hover {
  background-color: #e64a19;
}
.features {
  display: flex;
  justify-content: center;
  gap: 30px;
  margin: 60px 0;
}
.feature-card {
  text-align: center;
  max-width: 220px;
}
.home-products {
  text-align: center;
  padding: 40px 20px;
}
.home-products .product-grid {
  justify-content: center;
}
.footer {
  text-align: center;
  padding: 20px;
  margin-top: 40px;
  color: #777;
  background-color: #f1f1f1;
}

/* Admin User Management Styles */
.search-message {
    padding: 15px;
    margin: 20px 0;
    border-radius: 8px;
    text-align: center;
    font-weight: bold;
    font-size: 16px;
}

.search-message.success {
    background: linear-gradient(135deg, #d4edda, #c3e6cb);
    color: #155724;
    border: 1px solid #c3e6cb;
}

.search-message.error {
    background: linear-gradient(135deg, #f8d7da, #f5c6cb);
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.no-users-container {
    text-align: center;
    padding: 60px 20px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    margin: 20px 0;
}

.no-users-content {
    max-width: 500px;
    margin: 0 auto;
}

.no-users-content h3 {
    color: #6c757d;
    margin-bottom: 15px;
    font-size: 24px;
}

.no-users-content p {
    color: #868e96;
    margin-bottom: 25px;
    font-size: 16px;
    line-height: 1.6;
}

/* No Results Popup Styles */
.no-results-popup {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    animation: fadeIn 0.3s ease-in-out;
}

.popup-content {
    background: white;
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    max-width: 450px;
    width: 90%;
    overflow: hidden;
    animation: slideIn 0.3s ease-out;
}

.popup-header {
    background: linear-gradient(135deg, #dc3545, #c82333);
    color: white;
    padding: 20px;
    text-align: center;
    position: relative;
}

.popup-header h3 {
    margin: 0;
    font-size: 20px;
    font-weight: bold;
}

.popup-close {
    position: absolute;
    top: 15px;
    right: 20px;
    background: none;
    border: none;
    color: white;
    font-size: 24px;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background 0.3s;
}

.popup-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.popup-body {
    padding: 30px;
    text-align: center;
}

.popup-body p {
    margin: 0 0 25px 0;
    color: #495057;
    font-size: 16px;
    line-height: 1.6;
}

.popup-footer {
    padding: 0 30px 30px;
    display: flex;
    gap: 15px;
    justify-content: center;
}

.popup-btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
}

.popup-btn-primary {
    background: linear-gradient(135deg, #007bff, #0056b3);
    color: white;
}

.popup-btn-primary:hover {
    background: linear-gradient(135deg, #0056b3, #004085);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.4);
}

.popup-btn-secondary {
    background: linear-gradient(135deg, #6c757d, #545b62);
    color: white;
}

.popup-btn-secondary:hover {
    background: linear-gradient(135deg, #545b62, #3d4449);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(108, 117, 125, 0.4);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Stock Issue Popup Styles */
.stock-issue-popup {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.stock-issue-content {
    background: white;
    padding: 30px;
    border-radius: 12px;
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    text-align: center;
}

.stock-issue-header {
    color: #dc3545;
    font-size: 24px;
    margin-bottom: 20px;
    font-weight: bold;
}

.stock-issue-icon {
    font-size: 48px;
    color: #dc3545;
    margin-bottom: 20px;
}

.stock-issue-message {
    color: #666;
    font-size: 16px;
    margin-bottom: 25px;
    line-height: 1.5;
}

.stock-issue-details {
    background: #f8f9fa;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 25px;
    text-align: left;
}

.stock-issue-item {
    border-bottom: 1px solid #dee2e6;
    padding: 10px 0;
    margin-bottom: 10px;
}

.stock-issue-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.stock-issue-item .product-name {
    font-weight: bold;
    color: #333;
    margin-bottom: 5px;
}

.stock-issue-item .stock-details {
    color: #666;
    font-size: 14px;
}

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

.stock-issue-actions .btn-primary {
    background: #007bff;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    transition: background-color 0.3s;
}

.stock-issue-actions .btn-primary:hover {
    background: #0056b3;
}

.stock-issue-actions .btn-outline {
    background: transparent;
    color: #6c757d;
    border: 2px solid #6c757d;
    padding: 12px 24px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s;
}

.stock-issue-actions .btn-outline:hover {
    background: #6c757d;
    color: white;
}

/* Loading spinner for checkout */
.checkout-loading-spinner {
    display: none;
    text-align: center;
    padding: 20px;
}

.checkout-loading-spinner .spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #007bff;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto 15px;
}

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

/* Success and Error messages for checkout */
.checkout-success-message {
    display: none;
    background: #d4edda;
    color: #155724;
    padding: 15px;
    border-radius: 6px;
    margin-bottom: 20px;
    text-align: center;
    border: 1px solid #c3e6cb;
}

.checkout-error-message {
    display: none;
    background: #f8d7da;
    color: #721c24;
    padding: 15px;
    border-radius: 6px;
    margin-bottom: 20px;
    text-align: center;
    border: 1px solid #f5c6cb;
}

/* Inventory Management Styles */
.inventory-container {
    padding: 20px;
    max-width: 1400px;
    margin: 0 auto;
}

.page-header {
    text-align: center;
    margin-bottom: 30px;
}

.page-header h1 {
    color: #2c3e50;
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.page-header p {
    color: #7f8c8d;
    font-size: 1.1rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 25px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
    transition: transform 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
}

.stat-card i {
    font-size: 2.5rem;
    margin-bottom: 15px;
    opacity: 0.9;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 10px;
}

.stat-label {
    font-size: 1.1rem;
    opacity: 0.9;
}

.filters-section {
    background: white;
    padding: 25px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    margin-bottom: 30px;
}

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

.filters-title {
    font-size: 1.3rem;
    font-weight: bold;
    color: #2c3e50;
}

.export-btn {
    background: linear-gradient(135deg, #27ae60 0%, #2ecc71 100%);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.export-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(39, 174, 96, 0.4);
}

.filters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.filter-group {
    display: flex;
    flex-direction: column;
}

.filter-group label {
    font-weight: 600;
    color: #34495e;
    margin-bottom: 8px;
}

.filter-group select,
.filter-group input {
    padding: 10px;
    border: 2px solid #e1e8ed;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.filter-group select:focus,
.filter-group input:focus {
    outline: none;
    border-color: #667eea;
}

.filter-actions {
    display: flex;
    gap: 15px;
    align-items: end;
}

.apply-filters-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.apply-filters-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4);
}

.clear-filters-btn {
    background: #95a5a6;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.clear-filters-btn:hover {
    background: #7f8c8d;
    transform: translateY(-2px);
}

.inventory-table-container {
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    overflow: hidden;
}

.table-header {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: white;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.table-title {
    font-size: 1.3rem;
    font-weight: bold;
}

.table-count {
    color: #bdc3c7;
    font-size: 1rem;
}

.inventory-table {
    width: 100%;
    border-collapse: collapse;
}

.inventory-table th {
    background: #f8f9fa;
    color: #2c3e50;
    font-weight: 600;
    padding: 15px 12px;
    text-align: left;
    border-bottom: 2px solid #e9ecef;
}

.inventory-table td {
    padding: 15px 12px;
    border-bottom: 1px solid #e9ecef;
    vertical-align: middle;
}

.inventory-table tr:hover {
    background: #f8f9fa;
}

.stock-status {
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    text-align: center;
    display: inline-block;
    min-width: 80px;
}

.stock-out {
    background: #fee;
    color: #dc3545;
    border: 1px solid #fcc;
}

.stock-low {
    background: #fff3cd;
    color: #856404;
    border: 1px solid #ffeaa7;
}

.stock-ok {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.product-status {
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    text-align: center;
    display: inline-block;
    min-width: 80px;
}

.status-active {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.status-inactive {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.status-out-of-stock {
    background: #fff3cd;
    color: #856404;
    border: 1px solid #ffeaa7;
}

.price-cell {
    font-weight: 600;
    color: #2c3e50;
}

.stock-cell {
    font-weight: 600;
    text-align: center;
}

.actions-cell {
    text-align: center;
}

.edit-btn {
    background: #3498db;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.edit-btn:hover {
    background: #2980b9;
    transform: translateY(-1px);
}

.no-products {
    text-align: center;
    padding: 60px 20px;
    color: #7f8c8d;
}

.no-products i {
    font-size: 4rem;
    margin-bottom: 20px;
    opacity: 0.5;
}

.no-products h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: #2c3e50;
}

.no-products p {
    font-size: 1.1rem;
}

/* Mobile Responsiveness for Inventory */
@media (max-width: 768px) {
    .inventory-container {
        padding: 15px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .filters-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .filter-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .inventory-table-container {
        overflow-x: auto;
    }
    
    .inventory-table {
        min-width: 800px;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
}

/* ==================== BUTTON STYLES ==================== */

.btn {
    padding: 12px 25px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background: #5a6268;
    transform: translateY(-2px);
}

.btn-success {
    background: #28a745;
    color: white;
}

.btn-success:hover {
    background: #218838;
    transform: translateY(-2px);
}

.btn-warning {
    background: #ffc107;
    color: #212529;
}

.btn-warning:hover {
    background: #e0a800;
    transform: translateY(-2px);
}

.btn-danger {
    background: #dc3545;
    color: white;
}

.btn-danger:hover {
    background: #c82333;
    transform: translateY(-2px);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.85rem;
}

/* ==================== SUPPLIER MANAGEMENT STYLES ==================== */

.suppliers-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

.page-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 30px;
    border-radius: 15px;
    margin-bottom: 30px;
    text-align: center;
}

.page-header h1 {
    margin: 0;
    font-size: 2.5rem;
    font-weight: 600;
}

.page-header p {
    margin: 10px 0 0 0;
    opacity: 0.9;
    font-size: 1.1rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    padding: 25px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    text-align: center;
    border-left: 4px solid #667eea;
}

.stat-card h3 {
    margin: 0 0 10px 0;
    color: #333;
    font-size: 1.2rem;
}

.stat-card .number {
    font-size: 2.5rem;
    font-weight: 700;
    color: #667eea;
    margin: 0;
}

.actions-section {
    background: white;
    border-radius: 15px;
    padding: 25px;
    margin-bottom: 30px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.actions-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 15px;
}

.actions-header h2 {
    margin: 0;
    color: #333;
    font-size: 1.5rem;
}

.search-section {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.search-input {
    flex: 1;
    min-width: 300px;
    padding: 12px 15px;
    border: 2px solid #e1e5e9;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.search-input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.filter-section {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.filter-group label {
    font-weight: 600;
    color: #555;
    font-size: 0.9rem;
}

.filter-group select {
    padding: 8px 12px;
    border: 2px solid #e1e5e9;
    border-radius: 6px;
    font-size: 0.9rem;
}

.suppliers-table-container {
    background: white;
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    overflow-x: auto;
}

.suppliers-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 800px;
}

.suppliers-table th {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 15px 12px;
    text-align: left;
    font-weight: 600;
    color: #495057;
    border-bottom: 2px solid #dee2e6;
}

.suppliers-table td {
    padding: 12px;
    border-bottom: 1px solid #dee2e6;
    vertical-align: middle;
}

.suppliers-table tbody tr:hover {
    background: #f8f9fa;
}

.status-badge {
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
}

.status-active {
    background: #d4edda;
    color: #155724;
}

.status-inactive {
    background: #f8d7da;
    color: #721c24;
}

.status-suspended {
    background: #fff3cd;
    color: #856404;
}

.status-blacklisted {
    background: #f5c6cb;
    color: #721c24;
}

.rating-stars {
    color: #ffc107;
    font-size: 1.1rem;
}

.actions-cell {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.no-suppliers {
    text-align: center;
    padding: 50px 20px;
    color: #6c757d;
}

.no-suppliers h3 {
    margin: 0 0 15px 0;
    font-size: 1.5rem;
}

.no-suppliers p {
    margin: 0 0 20px 0;
    font-size: 1.1rem;
}

.alert {
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    border-left: 4px solid;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border-left-color: #28a745;
}

.alert-danger {
    background: #f8d7da;
    color: #721c24;
    border-left-color: #dc3545;
}

/* Mobile Responsiveness for Suppliers */
@media (max-width: 768px) {
    .suppliers-container {
        padding: 15px;
    }
    
    .page-header {
        padding: 20px;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 15px;
    }
    
    .actions-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-section {
        flex-direction: column;
    }
    
    .search-input {
        min-width: auto;
    }
    
    .filter-section {
        flex-direction: column;
    }
    
    .actions-cell {
        flex-direction: column;
    }
    
    .btn-sm {
        width: 100%;
        justify-content: center;
    }
}

/* ==================== ADD SUPPLIER FORM STYLES ==================== */

.add-supplier-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.form-container {
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    overflow: hidden;
}

.form-header {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
    padding: 25px 30px;
}

.form-header h2 {
    margin: 0;
    font-size: 1.8rem;
}

.form-content {
    padding: 30px;
}

.form-section {
    margin-bottom: 30px;
}

.section-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #f0f0f0;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    font-weight: 600;
    color: #555;
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px 15px;
    border: 2px solid #e1e5e9;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: #fafbfc;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
    background: white;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-actions {
    display: flex;
    gap: 15px;
    justify-content: flex-end;
    padding-top: 20px;
    border-top: 2px solid #f0f0f0;
}

.required {
    color: #dc3545;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
    margin-bottom: 20px;
    transition: color 0.3s ease;
}

.back-link:hover {
    color: #5a6fd8;
}

.back-link::before {
    content: "←";
    font-size: 1.2rem;
}

/* Mobile Responsiveness for Add Supplier Form */
@media (max-width: 768px) {
    .add-supplier-container {
        padding: 15px;
    }
    
    .form-content {
        padding: 20px;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .form-actions .btn {
        width: 100%;
    }
}

/* ==================== PURCHASE ORDER STYLES ==================== */

.purchase-orders-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

.add-po-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.po-table-container {
    background: white;
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    overflow-x: auto;
}

.po-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 800px;
}

.po-table th {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 15px 12px;
    text-align: left;
    font-weight: 600;
    color: #495057;
    border-bottom: 2px solid #dee2e6;
}

.po-table td {
    padding: 12px;
    border-bottom: 1px solid #dee2e6;
    vertical-align: middle;
}

.po-table tbody tr:hover {
    background: #f8f9fa;
}

.no-pos {
    text-align: center;
    padding: 50px 20px;
    color: #6c757d;
}

.no-pos h3 {
    margin: 0 0 15px 0;
    font-size: 1.5rem;
}

.no-pos p {
    margin: 0 0 20px 0;
    font-size: 1.1rem;
}

/* Order Items Styles */
.order-item {
    background: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
}

.item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid #dee2e6;
}

.item-header h4 {
    margin: 0;
    color: #495057;
    font-size: 1.1rem;
}

.remove-item-btn {
    background: #dc3545;
    color: white;
    border: none;
    padding: 5px 10px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8rem;
}

.remove-item-btn:hover {
    background: #c82333;
}

.item-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

/* Totals Summary */
.totals-summary {
    background: #f8f9fa;
    border-radius: 8px;
    padding: 20px;
    max-width: 400px;
    margin-left: auto;
}

.total-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid #dee2e6;
}

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

.total-row.total {
    font-weight: 700;
    font-size: 1.1rem;
    color: #2c3e50;
    border-top: 2px solid #dee2e6;
    padding-top: 15px;
    margin-top: 10px;
}

/* PO Status Badges */
.status-draft {
    background: #e9ecef;
    color: #495057;
}

.status-pending_approval {
    background: #fff3cd;
    color: #856404;
}

.status-approved {
    background: #d4edda;
    color: #155724;
}

.status-ordered {
    background: #cce5ff;
    color: #004085;
}

.status-partially_received {
    background: #fff3cd;
    color: #856404;
}

.status-fully_received {
    background: #d4edda;
    color: #155724;
}

.status-cancelled {
    background: #f8d7da;
    color: #721c24;
}

.status-closed {
    background: #e2e3e5;
    color: #383d41;
}

/* Mobile Responsiveness for Purchase Orders */
@media (max-width: 768px) {
    .purchase-orders-container,
    .add-po-container {
        padding: 15px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 15px;
    }
    
    .item-grid {
        grid-template-columns: 1fr;
    }
    
    .totals-summary {
        max-width: 100%;
        margin-left: 0;
    }
}