body {
    font-family: Arial, sans-serif;
    background-color: #f8f9fa;
    margin: 0;
    padding: 20px;
}

.wrapper {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    background-color: #fff;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1, h2 {
    color: #333;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
}

.form-control {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-sizing: border-box;
}

.btn {
    display: inline-block;
    padding: 10px 15px;
    background-color: #007bff;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
    margin-right: 5px;
}

.btn-primary {
    background-color: #007bff;
}

.btn-secondary {
    background-color: #6c757d;
}

.btn-success {
    background-color: #28a745;
}

.btn-warning {
    background-color: #ffc107;
    color: #212529;
}

.btn-danger {
    background-color: #dc3545;
}

.btn-download {
    background-color: #17a2b8;
}

.invalid-feedback {
    color: #dc3545;
    font-size: 0.875rem;
    margin-top: 5px;
    display: block;
}

.is-invalid {
    border-color: #dc3545;
}

.alert {
    padding: 15px;
    margin-bottom: 20px;
    border: 1px solid transparent;
    border-radius: 4px;
}

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

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

.user-table, .file-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
}

.user-table th, .file-table th,
.user-table td, .file-table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

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

.admin-section {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid #eee;
}

.checkbox-group {
    max-height: 200px;
    overflow-y: auto;
    border: 1px solid #ddd;
    padding: 10px;
    border-radius: 4px;
}

.checkbox-item {
    margin-bottom: 8px;
}

.checkbox-item input[type="checkbox"] {
    margin-right: 8px;
}
.link-container {
    margin: 10px 0;
    padding: 10px;
    background-color: #f8f9fa;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.link-input {
    width: 95%;
    padding: 8px;
    margin: 10px 0;
    border: 1px solid #aaa;
    border-radius: 4px;
    font-size: 14px;
}

.btn-small {
    display: inline-block;
    padding: 5px 10px;
    font-size: 0.85rem;
    margin-top: 5px;
}

.action-buttons {
    margin-top: 30px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 5px;
    text-align: center;
}
.action-buttons a {
    margin: 0 10px;
}