body {
    margin: 0;
    font-family: Arial, sans-serif;
    display: flex;
    height: 100vh;
}

#app {
    display: flex;
    width: 100%;
}

#sidebar {
    width: 300px;
    background-color: #2c2f33;
    color: #ffffff;
    display: flex;
    flex-direction: column;
    padding: 20px;
    box-sizing: border-box;
}

#logo {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 20px;
    text-align: center;
}

#search {
    margin-bottom: 20px;
    padding: 10px;
    border-radius: 5px;
    border: none;
    width: 100%;
    box-sizing: border-box;
}

#calendar-container {
    margin-bottom: 20px;
    width: 100%;
    box-sizing: border-box;
}

#calendar {
    width: 100%;
    padding: 10px;
    border-radius: 5px;
    border: none;
}

button {
    padding: 10px;
    margin-bottom: 10px;
    border-radius: 5px;
    border: none;
    background-color: #7289da;
    color: #ffffff;
    cursor: pointer;
    width: 100%;
    box-sizing: border-box;
}

button:hover {
    background-color: #5b6eae;
}

#main {
    flex-grow: 1;
    background-color: #23272a;
    color: #ffffff;
    display: flex;
    flex-direction: column;
    padding: 20px;
    box-sizing: border-box;
}

#diary-content {
    flex-grow: 1;
    background-color: #2c2f33;
    color: #ffffff;
    border: none;
    border-radius: 5px;
    padding: 10px;
    box-sizing: border-box;
    resize: none;
    font-size: 16px;
}

#diary-content:focus {
    outline: none;
}