:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #0dcaf0;
}

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

/* Sidebar Styles */
.sidebar {
    position: fixed;
    top: 56px;
    bottom: 0;
    left: 0;
    z-index: 100;
    padding: 0;
    box-shadow: inset -1px 0 0 rgba(0, 0, 0, .1);
    overflow-y: auto;
}

.sidebar .nav-link {
    font-weight: 500;
    color: #333;
    padding: 0.75rem 1rem;
    border-left: 3px solid transparent;
}

.sidebar .nav-link:hover {
    color: var(--primary-color);
    background-color: rgba(13, 110, 253, 0.1);
}

.sidebar .nav-link.active {
    color: var(--primary-color);
    border-left-color: var(--primary-color);
    background-color: rgba(13, 110, 253, 0.1);
}

.sidebar .nav-link i {
    font-size: 1.1rem;
}

.sidebar-heading {
    font-size: .75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Card Styles */
.card {
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15) !important;
}

/* Table Styles */
.table-hover tbody tr:hover {
    background-color: rgba(13, 110, 253, 0.05);
}

/* Badge Styles */
.badge {
    padding: 0.35rem 0.65rem;
    font-weight: 500;
    font-size: 0.75rem;
}

/* Button Styles */
.btn {
    border-radius: 0.375rem;
    padding: 0.5rem 1rem;
    font-weight: 500;
    transition: all 0.2s;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.875rem;
}

/* Alert Styles */
.alert {
    border-radius: 0.375rem;
    border: none;
}

/* Form Styles */
.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

/* Main Content */
main {
    margin-top: 56px;
}

/* Navbar Styles */
.navbar-brand {
    font-weight: 600;
    font-size: 1.25rem;
}

/* Login Page Styles */
.min-vh-100 {
    min-height: 100vh;
}

.card-body.p-5 {
    padding: 3rem !important;
}

/* Status Colors */
.text-active {
    color: var(--success-color);
}

.text-inactive {
    color: var(--secondary-color);
}

.text-suspended {
    color: var(--danger-color);
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        position: relative;
        top: 0;
    }
    
    main {
        margin-top: 0;
    }
}

/* Loading Spinner */
.spinner-border-sm {
    width: 1rem;
    height: 1rem;
    border-width: 0.15em;
}

/* Custom Scrollbar */
.sidebar::-webkit-scrollbar {
    width: 6px;
}

.sidebar::-webkit-scrollbar-track {
    background: #f1f1f1;
}

.sidebar::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 3px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
    background: #555;
}

/* Stats Card Animation */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card {
    animation: fadeInUp 0.5s ease-out;
}

/* Print Styles */
@media print {
    .sidebar,
    .navbar,
    .btn,
    .no-print {
        display: none !important;
    }
    
    main {
        margin: 0 !important;
        padding: 0 !important;
    }
}