/* Global Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

.container {
    display: grid;
    grid-template-areas: 
        "header header"
        "sidebar main";
    grid-template-columns: 250px 1fr;
    grid-template-rows: 60px 1fr;
    min-height: 100vh;
}

/* Header Styles */
.header {
    grid-area: header;
    background: linear-gradient(135deg, #2c5aa0 0%, #5dade2 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

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

.logo i {
    font-size: 1.5rem;
    color: #85c1e9;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 600;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.user-info i {
    font-size: 1.5rem;
    color: #85c1e9;
}

/* Sidebar Styles */
.sidebar {
    grid-area: sidebar;
    background: #2c3e50;
    padding: 1rem 0;
}

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

.nav-item {
    display: flex;
    align-items: center;
    padding: 1rem 1.5rem;
    color: #bdc3c7;
    cursor: pointer;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

.nav-item:hover {
    background: #34495e;
    color: #85c1e9;
    border-left-color: #85c1e9;
}

.nav-item.active {
    background: #34495e;
    color: #85c1e9;
    border-left-color: #85c1e9;
}

.nav-item i {
    margin-right: 0.75rem;
    width: 20px;
    text-align: center;
}

/* Main Content Styles */
.main-content {
    grid-area: main;
    padding: 2rem;
    overflow-y: auto;
}

.section {
    display: none;
}

.section.active {
    display: block;
}

.section h2 {
    margin-bottom: 1.5rem;
    color: #2c3e50;
    font-size: 1.8rem;
    font-weight: 600;
}

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

.stat-card {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    display: flex;
    align-items: center;
    gap: 1rem;
    border-left: 4px solid #3498db;
}

.stat-card i {
    font-size: 2rem;
    color: #3498db;
}

.stat-info h3 {
    font-size: 0.9rem;
    color: #7f8c8d;
    margin-bottom: 0.25rem;
}

.stat-number {
    font-size: 1.8rem;
    font-weight: 600;
    color: #2c3e50;
}

/* Form Styles */
.form-container {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

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

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

.form-group label {
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #2c3e50;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

/* Button Styles */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

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

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

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

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

.btn-danger {
    background: #e74c3c;
    color: white;
}

.btn-danger:hover {
    background: #c0392b;
}

.btn-success {
    background: #27ae60;
    color: white;
}

.btn-success:hover {
    background: #229954;
}

/* Search and Filter Styles */
.search-bar {
    position: relative;
    margin-bottom: 1rem;
}

.search-bar input {
    width: 100%;
    padding: 0.75rem 2.5rem 0.75rem 1rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.search-bar i {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: #7f8c8d;
}

.search-filter {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.search-filter input {
    flex: 1;
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.search-filter select {
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    min-width: 150px;
}

/* Table Styles */
.table-container {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    overflow: hidden;
    margin-bottom: 2rem;
}

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

thead {
    background: #f8f9fa;
}

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #dee2e6;
}

th {
    font-weight: 600;
    color: #2c3e50;
}

tbody tr:hover {
    background: #f8f9fa;
}

/* Controls */
.inventory-controls,
.lab-controls,
.appointment-controls,
.services-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

/* Stats for specific sections */
.inventory-stats,
.lab-stats,
.appointment-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.inventory-stats .stat-card {
    border-left-color: #e74c3c;
}

.lab-stats .stat-card {
    border-left-color: #f39c12;
}

.appointment-stats .stat-card {
    border-left-color: #27ae60;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 2rem;
    border-radius: 8px;
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
}

.close {
    position: absolute;
    right: 1rem;
    top: 1rem;
    color: #aaa;
    font-size: 1.5rem;
    font-weight: bold;
    cursor: pointer;
}

.close:hover {
    color: #333;
}

/* Status badges */
.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 500;
}

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

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

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

.status-active {
    background: #d1ecf1;
    color: #0c5460;
}

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

/* Low stock warning */
.low-stock {
    color: #e74c3c;
    font-weight: 600;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        grid-template-areas: 
            "header"
            "main";
        grid-template-columns: 1fr;
        grid-template-rows: 60px 1fr;
    }
    
    .sidebar {
        display: none;
    }
    
    .main-content {
        padding: 1rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .inventory-controls,
    .lab-controls,
    .appointment-controls,
    .services-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-filter {
        flex-direction: column;
    }
    
    .modal-content {
        width: 95%;
        margin: 2% auto;
        padding: 1rem;
    }
    
    table {
        font-size: 0.85rem;
    }
    
    th, td {
        padding: 0.5rem;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 0 1rem;
    }
    
    .logo h1 {
        font-size: 1.2rem;
    }
    
    .user-info span {
        display: none;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
}

/* Print Styles */
@media print {
    .sidebar,
    .header .user-info,
    .btn,
    .search-bar,
    .search-filter,
    .inventory-controls,
    .lab-controls,
    .appointment-controls,
    .services-controls {
        display: none !important;
    }
    
    .container {
        grid-template-areas: "main";
        grid-template-columns: 1fr;
    }
    
    .main-content {
        padding: 0;
    }
    
    .section {
        display: block !important;
    }
    
    body {
        background: white;
    }
    
    .table-container,
    .form-container {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}