:root {
    --primary-color: #3498db;
    --secondary-color: #2c3e50;
    --success-color: #2ecc71;
    --danger-color: #e74c3c;
    --warning-color: #f39c12;
    --light-color: #ecf0f1;
    --dark-color: #34495e;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.header {
    background-color: var(--secondary-color);
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li {
    margin-left: 1.5rem;
}

.nav-links a {
    color: white;
    text-decoration: none;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.main-content {
    padding: 2rem 0;
}

.card {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.card-header {
    border-bottom: 1px solid #eee;
    padding-bottom: 1rem;
    margin-bottom: 1rem;
    font-size: 1.2rem;
    font-weight: bold;
}

.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
    transition: background-color 0.3s;
}

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

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

.btn-success:hover {
    background-color: #27ae60;
}

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

.btn-danger:hover {
    background-color: #c0392b;
}

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

.btn-warning:hover {
    background-color: #d35400;
}

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

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

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

.alert-danger {
    background-color: #f8d7da;
    color: #721c24;
}

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

.form-control {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.form-control:focus {
    border-color: var(--primary-color);
    outline: none;
}

.label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
}

.table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1rem;
}

.table th, .table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

.table th {
    background-color: #f8f9fa;
    font-weight: bold;
}

.table tr:hover {
    background-color: #f5f5f5;
}

.status-pending {
    color: var(--warning-color);
    font-weight: bold;
}

.status-processed {
    color: var(--primary-color);
    font-weight: bold;
}

.status-completed {
    color: var(--success-color);
    font-weight: bold;
}

.status-rejected {
    color: var(--danger-color);
    font-weight: bold;
}

.footer {
    background-color: var(--secondary-color);
    color: white;
    text-align: center;
    padding: 1rem 0;
    margin-top: 2rem;
}

.login-container {
    max-width: 500px;
    margin: 2rem auto;
    padding: 2rem;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.login-title {
    text-align: center;
    margin-bottom: 1.5rem;
}

.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    padding: 1.5rem;
    text-align: center;
}

.stat-card h3 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.stat-card p {
    color: var(--dark-color);
}

.attachment-list {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 1rem;
}

.attachment-item {
    border: 1px solid #ddd;
    padding: 0.5rem;
    border-radius: 4px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.attachment-icon {
    width: 24px;
    height: 24px;
}

@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
    }
    
    .nav-links {
        margin-top: 1rem;
    }
    
    .nav-links li {
        margin-left: 0;
        margin-right: 1rem;
    }
    
    .dashboard-stats {
        grid-template-columns: 1fr;
    }
}