.explorer {
    border: 1px solid #ccc;
    background-color: #f9f9f9;
    padding: 10px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 14px;
    max-width: 500px;
    border-radius: 4px;
}

.explorer ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.explorer li {
    margin: 0;
    padding: 0;
}

.item-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 2px 4px;
    border-radius: 2px;
    transition: background-color 0.1s;
}

.item-container:hover {
    background-color: #e3f2fd;
}

.folder-header {
    display: flex;
    align-items: center;
    flex: 1;
    cursor: pointer;
    user-select: none;
}

.file-content {
    display: flex;
    align-items: center;
    flex: 1;
}

.folder-header.expanded {
    font-weight: 500;
}

.folder-arrow {
    width: 16px;
    height: 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-right: 4px;
    font-size: 10px;
    color: #666;
    transition: transform 0.1s;
}

.folder-icon, .file-icon {
    margin-right: 6px;
    font-size: 16px;
}

.folder-name, .file-name {
    color: #333;
}

.download-btn {
    background-color: #4CAF50;
    border: none;
    color: white;
    padding: 4px 8px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 12px;
    margin: 2px;
    cursor: pointer;
    border-radius: 3px;
    transition: background-color 0.2s;
    opacity: 0.7;
}

.download-btn:hover {
    background-color: #45a049;
    opacity: 1;
}

.download-btn:active {
    background-color: #3d8b40;
}

.folder-children {
    margin-left: 20px;
    border-left: 1px dotted #ccc;
    padding-left: 8px;
}

.file-item {
    margin-left: 20px;
}

/* Animação suave para expansão */
.folder-children {
    overflow: hidden;
    transition: max-height 0.2s ease-out;
}

/* Estilos do formulário de upload */
.upload-section {
    margin-top: 20px;
    padding: 20px;
    border: 1px solid #ddd;
    border-radius: 8px;
    background-color: #fafafa;
    max-width: 500px;
}

.upload-section h3 {
    margin-top: 0;
    margin-bottom: 15px;
    color: #333;
    font-size: 16px;
}

.upload-option {
    margin-bottom: 15px;
    padding: 10px;
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    background-color: white;
}

.upload-option label {
    display: flex;
    align-items: center;
    font-weight: 500;
    cursor: pointer;
    margin-bottom: 8px;
}

.upload-option input[type="radio"] {
    margin-right: 8px;
}

.file-input-container {
    margin-left: 20px;
    padding: 8px 0;
}

.file-input-container input[type="file"] {
    width: 100%;
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
    background-color: #f9f9f9;
    cursor: pointer;
}

.file-input-container small {
    display: block;
    margin-top: 4px;
    color: #666;
    font-style: italic;
}

.submit-btn {
    background-color: #007cba;
    color: white;
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: background-color 0.2s;
    margin-top: 10px;
}

.submit-btn:hover {
    background-color: #005a87;
}

.submit-btn:active {
    background-color: #004a73;
}