body {
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background-color: #f0f4f8;
    margin: 0;
    padding: 0;
}

.container {
    background-color: white;
    padding: 40px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    border-radius: 10px;
    max-width: 1000px;
    margin: auto;
}

h1 {
    text-align: center;
    color: #337ab7;
    margin-bottom: 30px;
}

.textarea-container {
    position: relative;
    margin-bottom: 20px;
}

textarea {
    width: 100%;
    padding: 15px;
    font-size: 16px;
    border-radius: 8px;
    border: 1px solid #ddd;
    resize: vertical;
    background-color: #f9f9f9;
}

.textarea-container label {
    font-weight: bold;
    color: #555;
    margin-bottom: 5px;
    display: block;
}

.copy-button {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 10px;
    background-color: #5cb85c;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
}

.copy-button:hover {
    background-color: #4cae4c;
}

.button-container {
    text-align: center;
    margin-top: 30px;
}

.button-container button {
    padding: 12px 25px;
    background-color: #337ab7;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    margin: 5px;
}

.button-container button:hover {
    background-color: #286090;
}

.button-container button:disabled {
    background-color: #cccccc;
    cursor: not-allowed;
}

.copy-button {
    background-color: #0275d8;
}

.copy-button:hover {
    background-color: #025aa5;
}

.alert {
    background-color: #f9f9f9;
    padding: 15px;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    margin-top: 20px;
    color: #5bc0de;
}

.alert.alert-danger {
    color: #d9534f;
}

.alert.alert-success {
    color: #5cb85c;
}

.line-count {
    margin-top: 10px;
    display: flex;
    justify-content: space-between;
}

.line-count input {
    width: 60px;
    padding: 5px;
    text-align: center;
    border-radius: 5px;
    border: 1px solid #ddd;
    background-color: #f9f9f9;
    font-size: 14px;
    color: #555;
}