body {
    font-family: Arial, sans-serif;
    margin: 2rem;
    background-color: #f9f9f9;
    color: #333;
}

h1 {
    text-align: center;
    margin-bottom: 1.5rem;
}

.container {
    max-width: 500px;
    margin: 0 auto;
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

input[type="text"] {
    width: 100%;
    padding: 0.6rem;
    font-size: 1rem;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
    margin-bottom: 1rem;
}

button {
    padding: 0.6rem 1.2rem;
    font-size: 1rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    margin-right: 0.5rem;
    transition: background-color 0.3s ease;
}

button.convert-btn {
    background-color: #25f4ee;
    color: #000;
}

button.convert-btn:hover {
    background-color: #1ac9d8;
}

button.copy-btn {
    background-color: #4caf50;
    color: white;
}

button.copy-btn:hover {
    background-color: #3e8e41;
}

.result {
    margin-top: 1rem;
    padding: 0.6rem;
    background-color: #e0f7fa;
    border-radius: 4px;
    word-break: break-all;
    font-weight: bold;
}

.result a {
    color: #007bff;
    text-decoration: none;
}

.result a:hover {
    text-decoration: underline;
}

.hidden {
    display: none;
}