: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;
    background-color: #f8f9fa;
}

.navbar-brand {
    font-weight: bold;
    font-size: 1.3rem;
}

.card {
    border: none;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

.card-header {
    background-color: #fff;
    border-bottom: 2px solid #f0f0f0;
    font-weight: 600;
}

.table {
    background-color: #fff;
}

.table thead th {
    background-color: #f8f9fa;
    border-bottom: 2px solid #dee2e6;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.85rem;
}

.badge {
    padding: 0.4em 0.8em;
    font-weight: 500;
}

.status-badge {
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 0.85rem;
}

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

.status-approved {
    background-color: #d1e7dd;
    color: #0f5132;
}

.status-rejected {
    background-color: #f8d7da;
    color: #842029;
}

.status-available {
    background-color: #d1e7dd;
    color: #0f5132;
}

.status-assigned {
    background-color: #cff4fc;
    color: #055160;
}

.btn {
    border-radius: 5px;
    padding: 0.5rem 1rem;
    font-weight: 500;
}

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

.form-control, .form-select {
    border-radius: 5px;
    border: 1px solid #ced4da;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-card {
    width: 100%;
    max-width: 450px;
    border-radius: 15px;
    overflow: hidden;
}

.stat-card {
    border-left: 4px solid;
    transition: transform 0.2s;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.stat-card.primary {
    border-left-color: var(--primary-color);
}

.stat-card.success {
    border-left-color: var(--success-color);
}

.stat-card.warning {
    border-left-color: var(--warning-color);
}

.stat-card.danger {
    border-left-color: var(--danger-color);
}

.stat-icon {
    font-size: 2.5rem;
    opacity: 0.7;
}

.action-buttons .btn {
    margin-right: 5px;
    margin-bottom: 5px;
}

.search-box {
    max-width: 400px;
}

.table-responsive {
    border-radius: 10px;
}

.page-header {
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 2px solid #e9ecef;
}

.breadcrumb {
    background-color: transparent;
    padding: 0;
    margin-bottom: 0;
}

.alert {
    border-radius: 8px;
    border: none;
}

.dropdown-menu {
    border-radius: 8px;
    border: none;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

@media print {
    .no-print {
        display: none !important;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #dee2e6;
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 5px;
}

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

/* Loading Spinner */
.spinner-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.low-stock {
    background-color: #fff3cd !important;
}

.out-of-stock {
    background-color: #f8d7da !important;
}