body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: #f0f2f5;
    color: #333;
    margin: 0;
    padding: 20px;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    background-color: #fff;
    padding: 20px 30px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

h1, h2, h3, h4 {
    color: #1f2329;
}

h1 {
    text-align: center;
    border-bottom: 1px solid #eee;
    padding-bottom: 20px;
    margin-bottom: 20px;
}

h2 {
    margin-top: 30px;
    border-bottom: 1px solid #eee;
    padding-bottom: 10px;
}

.message.success {
    background-color: #d4edda;
    color: #155724;
    padding: 10px;
    border: 1px solid #c3e6cb;
    border-radius: 4px;
    text-align: center;
    margin-bottom: 20px;
}

.section {
    margin-bottom: 20px;
}

.item-editor {
    border: 1px solid #ddd;
    border-radius: 5px;
    padding: 15px;
    margin-bottom: 15px;
    background-color: #f9f9f9;
}

.form-group {
    margin-bottom: 10px;
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 5px;
}

input[type="text"], select, textarea {
    width: 100%;
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}

textarea {
    min-height: 60px;
    resize: vertical;
}

.messages-list {
    margin-top: 15px;
}

.message-editor {
    border: 1px dashed #ccc;
    padding: 10px;
    margin-bottom: 10px;
    background-color: #fff;
}

.add-message-btn, .remove-message-btn {
    background-color: #5c6ac4;
    color: white;
    border: none;
    padding: 5px 10px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    margin-top: 5px;
}

.remove-message-btn {
    background-color: #d9534f;
}

.save-btn {
    display: block;
    width: 100%;
    padding: 15px;
    font-size: 16px;
    font-weight: bold;
    color: #fff;
    background-color: #28a745;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    margin-top: 20px;
}

.save-btn:hover {
    background-color: #218838;
}