/* Custom styles */
:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #0dcaf0;
    --light-bg: #f8f9fa;
    --dark-text: #212529;
}

body {
    background-color: var(--light-bg);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--dark-text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

/* Cards */
.card {
    border-radius: 12px;
    border: none;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
}

.card-header {
    background-color: transparent;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    font-weight: 600;
    padding: 1rem 1.25rem;
}

/* Dashboard Statistics */
.dashboard-stat {
    text-align: center;
    padding: 1.5rem;
}

.dashboard-stat .number {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.2;
}

.dashboard-stat .label {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 0.25rem;
}

/* Navigation */
.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
}

.navbar {
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
}

/* Forms */
.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.15);
}

.form-label {
    font-weight: 500;
    font-size: 0.9rem;
}

/* Tables */
.table thead th {
    border-top: none;
    border-bottom: 2px solid rgba(0, 0, 0, 0.05);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
}

.table tbody tr:hover {
    background-color: rgba(13, 110, 253, 0.03);
}

/* Buttons */
.btn {
    border-radius: 8px;
    padding: 0.5rem 1.25rem;
    font-weight: 500;
}

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

.btn-primary:hover {
    background-color: #0b5ed7;
    border-color: #0a58ca;
}

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

/* Badges */
.badge {
    padding: 0.4rem 0.75rem;
    font-weight: 500;
    border-radius: 50px;
}

/* Footer */
footer {
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    margin-top: auto;
}

/* Utilities */
.text-truncate-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* DataTables overrides */
.dataTables_wrapper .dataTables_filter input {
    border-radius: 8px;
    border: 1px solid #ced4da;
    padding: 0.375rem 0.75rem;
}

.dataTables_wrapper .dataTables_length select {
    border-radius: 8px;
    border: 1px solid #ced4da;
    padding: 0.375rem 0.75rem;
}

/* Print styles */
@media print {
    .navbar,
    .btn,
    .no-print {
        display: none !important;
    }
    
    .card {
        box-shadow: none !important;
        border: 1px solid #ddd !important;
    }
}

/* Responsive */
@media (max-width: 768px) {
    .dashboard-stat .number {
        font-size: 1.8rem;
    }
    
    .card {
        margin-bottom: 1rem;
    }
    
    .table-responsive {
        font-size: 0.9rem;
    }
}

/* Password strength indicator */
.password-strength {
    margin-top: 0.25rem;
    font-size: 0.8rem;
}

.password-strength.weak {
    color: #dc3545;
}

.password-strength.medium {
    color: #ffc107;
}

.password-strength.strong {
    color: #198754;
}

/* Loading spinner */
.spinner-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.spinner-overlay .spinner-border {
    width: 3rem;
    height: 3rem;
}