/* Reset and Base Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #f5f7fa;
    color: #333;
    line-height: 1.6;
}

/* Header */
.header {
    background: linear-gradient(135deg, #8B4513 0%, #CD853F 100%);
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header h1 {
    font-size: 2rem;
    font-weight: 600;
    margin: 0;
}

.header p {
    margin: 0;
    opacity: 0.9;
    font-size: 0.9rem;
}

/* Admin Container */
.admin-container {
    display: flex;
    min-height: calc(100vh - 80px);
    max-width: 1400px;
    margin: 0 auto;
}

/* Sidebar */
.sidebar {
    width: 250px;
    background: white;
    box-shadow: 2px 0 10px rgba(0,0,0,0.1);
    padding: 2rem 0;
}

.nav-menu ul {
    list-style: none;
}

.nav-item {
    padding: 1rem 2rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 1rem;
    border-left: 4px solid transparent;
}

.nav-item:hover {
    background: #f8f9fa;
    border-left-color: #8B4513;
}

.nav-item.active {
    background: #fff8f0;
    border-left-color: #8B4513;
    color: #8B4513;
}

.nav-item i {
    width: 20px;
    text-align: center;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 2rem;
    background: #f5f7fa;
}

.content-section {
    display: none;
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 20px rgba(0,0,0,0.05);
    overflow: hidden;
}

.content-section.active {
    display: block;
}

/* Section Header */
.section-header {
    padding: 2rem;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-bottom: 1px solid #dee2e6;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.section-header h2 {
    color: #495057;
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0;
}

.header-actions {
    display: flex;
    gap: 1rem;
}

/* Search and Filter Bar */
.search-bar {
    padding: 1.5rem 2rem;
    background: #f8f9fa;
    border-bottom: 1px solid #dee2e6;
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

.search-group {
    display: flex;
    gap: 0.5rem;
    flex: 1;
    min-width: 300px;
}

.search-group input {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 0.9rem;
}

.search-group input:focus {
    outline: none;
    border-color: #8B4513;
}

.filter-group {
    display: flex;
    gap: 1rem;
}

.filter-group select {
    padding: 0.75rem 1rem;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 0.9rem;
    background: white;
    cursor: pointer;
}

.filter-group select:focus {
    outline: none;
    border-color: #8B4513;
}

/* Table Styles */
.table-container {
    overflow-x: auto;
    padding: 0;
}

.products-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.products-table th,
.products-table td {
    padding: 1rem 0.75rem;
    text-align: left;
    border-bottom: 1px solid #e9ecef;
}

.products-table th {
    background: #f8f9fa;
    color: #495057;
    font-weight: 600;
    position: sticky;
    top: 0;
    z-index: 10;
}

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

.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

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

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

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

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 0.5rem;
}

.btn-icon {
    padding: 0.5rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-edit {
    background: #007bff;
    color: white;
}

.btn-edit:hover {
    background: #0056b3;
}

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

.btn-delete:hover {
    background: #c82333;
}

/* Form Styles */
.form-container {
    padding: 2rem;
}

.product-form {
    max-width: 800px;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

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

.form-group.full-width {
    grid-column: span 2;
}

.form-group label {
    margin-bottom: 0.5rem;
    color: #495057;
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.75rem 1rem;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 0.9rem;
    transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #8B4513;
}

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

/* Button Styles */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.btn-primary {
    background: #8B4513;
    color: white;
}

.btn-primary:hover {
    background: #654321;
}

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

.btn-secondary:hover {
    background: #5a6268;
}

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

.btn-success:hover {
    background: #1e7e34;
}

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

.btn-danger:hover {
    background: #c82333;
}

.btn-search {
    background: #17a2b8;
    color: white;
}

.btn-search:hover {
    background: #117a8b;
}

.form-actions {
    display: flex;
    gap: 1rem;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background: white;
    margin: 5% auto;
    border-radius: 12px;
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideIn 0.3s ease;
}

.modal-header {
    padding: 1.5rem 2rem;
    background: #f8f9fa;
    border-bottom: 1px solid #dee2e6;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    margin: 0;
    color: #495057;
}

.close {
    color: #aaa;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    line-height: 1;
}

.close:hover {
    color: #000;
}

.modal-body {
    padding: 2rem;
}

/* Statistics Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    padding: 2rem;
}

.stat-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    border-left: 4px solid #8B4513;
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.stat-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #8B4513, #CD853F);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.stat-info h3 {
    font-size: 2rem;
    font-weight: 700;
    color: #495057;
    margin: 0;
}

.stat-info p {
    color: #6c757d;
    margin: 0;
    font-size: 0.9rem;
}

/* Loading Spinner */
.loading-spinner {
    text-align: center;
    padding: 3rem;
    color: #6c757d;
}

.loading-spinner i {
    font-size: 2rem;
    margin-bottom: 1rem;
    display: block;
}

/* Toast Notifications */
#toast-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 3000;
    max-width: 400px;
}

.toast {
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    margin-bottom: 1rem;
    padding: 1rem;
    border-left: 4px solid;
    animation: slideInRight 0.3s ease;
}

.toast.success {
    border-left-color: #28a745;
}

.toast.error {
    border-left-color: #dc3545;
}

.toast.info {
    border-left-color: #17a2b8;
}

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

@keyframes slideIn {
    from { transform: translateY(-30px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

@keyframes slideInRight {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* Responsive Design */
@media (max-width: 768px) {
    .admin-container {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        order: 2;
    }
    
    .main-content {
        order: 1;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .form-group.full-width {
        grid-column: span 1;
    }
    
    .search-bar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-group {
        min-width: auto;
    }
    
    .header-actions {
        flex-direction: column;
    }
    
    .section-header {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .main-content {
        padding: 1rem;
    }
    
    .products-table {
        font-size: 0.8rem;
    }
    
    .products-table th,
    .products-table td {
        padding: 0.5rem;
    }
    
    .modal-content {
        margin: 2% auto;
        width: 95%;
    }
}

/* Print Styles */
@media print {
    .sidebar,
    .header-actions,
    .action-buttons {
        display: none !important;
    }
    
    .main-content {
        padding: 0;
    }
}