:root {
    --mint-green: #98c9a8;
    --olive-green: #6b8e4c;
    --soft-mint: #d1e9d9;
    --dark-olive: #4a6b3a;
    --white: #ffffff;
    --light-gray: #f5f5f5;
    --text-dark: #333333;
    --danger: #dc3545;
    --success: #28a745;
    --warning: #ffc107;
    --info: #17a2b8;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--soft-mint);
    color: var(--text-dark);
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

.header {
    background: linear-gradient(135deg, var(--mint-green), var(--olive-green));
    color: white;
    padding: 2rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.header h1 {
    color: white;
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.header p {
    color: rgba(255,255,255,0.9);
    font-size: 1.1rem;
}

.nav-menu {
    background-color: var(--dark-olive);
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    transition: all 0.3s;
    font-weight: 500;
}

.nav-menu a:hover {
    background-color: var(--olive-green);
    transform: translateY(-2px);
}

.card {
    background: var(--white);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.card-header {
    border-bottom: 2px solid var(--mint-green);
    padding-bottom: 1rem;
    margin-bottom: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h2 {
    color: var(--dark-olive);
    font-size: 1.5rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--dark-olive);
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--mint-green);
    border-radius: 4px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: var(--olive-green);
    box-shadow: 0 0 0 3px rgba(107, 142, 76, 0.1);
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    font-weight: 500;
    margin: 0.25rem;
}

.btn-primary {
    background-color: var(--olive-green);
    color: white;
}

.btn-primary:hover {
    background-color: var(--dark-olive);
    transform: translateY(-2px);
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.btn-secondary {
    background-color: var(--mint-green);
    color: var(--text-dark);
}

.btn-secondary:hover {
    background-color: var(--soft-mint);
    transform: translateY(-2px);
}

.btn-danger {
    background-color: var(--danger);
    color: white;
}

.btn-danger:hover {
    background-color: #bd2130;
}

.table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
    border-radius: 8px;
    overflow: hidden;
}

.table th {
    background-color: var(--mint-green);
    color: var(--dark-olive);
    font-weight: 600;
    padding: 1rem;
    text-align: left;
}

.table td {
    padding: 1rem;
    border-bottom: 1px solid var(--soft-mint);
}

.table tr:hover {
    background-color: var(--soft-mint);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 8px;
    text-align: center;
    border-left: 4px solid var(--olive-green);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.stat-value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--dark-olive);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-dark);
    font-weight: 500;
}

.stat-card small {
    display: block;
    color: #666;
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

.alert {
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
    border: 1px solid transparent;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border-color: #c3e6cb;
}

.alert-error {
    background-color: #f8d7da;
    color: #721c24;
    border-color: #f5c6cb;
}

.alert-warning {
    background-color: #fff3cd;
    color: #856404;
    border-color: #ffeeba;
}

.alert-info {
    background-color: #d1ecf1;
    color: #0c5460;
    border-color: #bee5eb;
}

.modal {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
    z-index: 1000;
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
}

.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 999;
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-success {
    background-color: var(--success);
    color: white;
}

.badge-warning {
    background-color: var(--warning);
    color: var(--text-dark);
}

.badge-danger {
    background-color: var(--danger);
    color: white;
}

.badge-info {
    background-color: var(--info);
    color: white;
}

@media print {
    .nav-menu, .btn, .modal, .modal-overlay, .form-group, .card-header .btn {
        display: none !important;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #ddd;
        break-inside: avoid;
    }
    
    .header {
        background: none;
        color: black;
        box-shadow: none;
    }
    
    .header h1 {
        color: var(--dark-olive);
    }
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .nav-menu {
        flex-direction: column;
    }
    
    .nav-menu a {
        text-align: center;
    }
    
    .table {
        display: block;
        overflow-x: auto;
    }
}