body {
    font-family: 'Segoe UI', Tahoma, sans-serif;
    background-color: #f9f9f9;
    padding: 20px;
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    height: 100vh;
}

.container {
    display: flex;
    justify-content: space-between;
    width: 100%;
    max-width: 1200px;
    height: 90vh;
    background-color: #fff;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    border-radius: 10px;
    overflow: hidden;
}

.left-column, .right-column {
    padding: 20px;
    display: flex;
    flex-direction: column;
}

.left-column {
    width: 40%;
    border-right: 1px solid #ddd;
}

.right-column {
    width: 60%;
}

label {
    font-weight: 600;
    margin-top: 10px;
}

input, select, textarea {
    font-size: 14px;
    margin-bottom: 10px;
    padding: 8px 10px;
    width: 100%;
    border: 1px solid #ccc;
    border-radius: 6px;
    box-sizing: border-box;
}

textarea {
    resize: vertical;
}

.button-container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 10px;
}

button {
    padding: 8px 16px;
    font-size: 13px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: #3b9440;
}

.title-list {
    flex-grow: 1;
    border: 1px solid #ddd;
    padding: 10px;
    overflow-y: auto;
    background-color: #fafafa;
    border-radius: 6px;
}

.title-list-item {
    padding: 8px;
    border-bottom: 1px solid #eee;
    cursor: pointer;
    border-radius: 4px;
}

.title-list-item:hover {
    background-color: #eaeaea;
}

.category-header {
    font-weight: bold;
    margin-top: 15px;
    margin-bottom: 5px;
    color: #333;
}