:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --success-color: #27ae60;
    --danger-color: #e74c3c;
    --warning-color: #f39c12;
    --light-bg: #f8f9fa;
}

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

.navbar {
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.card {
    border: none;
    box-shadow: 0 0 20px rgba(0,0,0,0.08);
    border-radius: 10px;
    transition: transform 0.3s;
}

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

.card-header {
    background-color: var(--primary-color);
    color: white;
    border-radius: 10px 10px 0 0 !important;
}

.btn-primary {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
}

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

.table-hover tbody tr:hover {
    background-color: rgba(52, 152, 219, 0.1);
}

.badge {
    padding: 5px 10px;
    border-radius: 20px;
}

/* Dashboard stats cards */
.card.text-white .card-body {
    padding: 1.5rem;
}

.card.text-white .display-6 {
    font-weight: bold;
}

/* Modal styling */
.modal-content {
    border-radius: 10px;
}

.modal-header {
    background-color: var(--primary-color);
    color: white;
    border-radius: 10px 10px 0 0;
}

/* Form styling */
.form-control:focus {
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 0.25rem rgba(52, 152, 219, 0.25);
}

/* Alert messages */
.alert {
    border-radius: 10px;
    border: none;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .container {
        padding-left: 15px;
        padding-right: 15px;
    }
    
    .card-body {
        padding: 1rem;
    }
}