.config-container {
    max-width: 900px;
    margin: 30px auto;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    width: 700px;
}

.config-section {
    background: white;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 0;
    margin-bottom: 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.config-group {
    padding: 16px 24px;
    border-bottom: 1px solid #f0f0f0;
}

    .config-group:last-child {
        border-bottom: none;
    }

    .config-group .label {
        display: block;
        font-weight: 500;
        margin-bottom: 8px;
        color: #2c3e50;
        font-size: 14px;
    }

    .config-group input,
    .config-group select,
    .config-group textarea {
        width: 100%;
        padding: 10px 14px;
        border: 1px solid #d0d0d0;
        border-radius: 6px;
        font-size: 14px;
        font-family: 'Consolas', 'Monaco', monospace;
        transition: border-color 0.2s, box-shadow 0.2s;
        background: #fafafa;
    }

        .config-group input:focus,
        .config-group select:focus,
        .config-group textarea:focus {
            outline: none;
            border-color: #4a90e2;
            box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
            background: white;
        }

        .config-group input[type="checkbox"] {
            width: auto;
            margin-right: 8px;
        }

.nested-config {
    margin: 16px 0 0 0;
    padding: 0;
    border-left: 4px solid #4a90e2;
    background: #f8f9fa;
    border-radius: 6px;
    overflow: hidden;
}

.nested-config-header {
    font-size: 15px;
    font-weight: 600;
    color: #4a90e2;
    padding: 16px 24px;
    background: #e8f4fd;
    border-bottom: 1px solid #d0e8f7;
    margin: 0;
}

.nested-config .config-group {
    background: white;
    margin: 0;
}

.btn-save {
    background: #4a90e2;
    color: white;
    padding: 12px 32px;
    border: none;
    border-radius: 6px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s;
    margin: 20px 0;
}

    .btn-save:hover {
        background: #357abd;
    }

.description {
    font-size: 12px;
    color: #7f8c8d;
    margin-bottom: 10px;
    font-style: italic;
}

h2 {
    color: #2c3e50;
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 24px;
    padding-left: 4px;
}

textarea {
    resize: none;
}