body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
    margin: 0;
    padding: 0;
}
main#container {
    max-width: 800px;
    margin: 40px auto;
    padding: 24px;
    background-color: #fff;
    border: 1px solid #ddd;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}
#words {
    width: 100%;
    min-height: 80px;
    padding: 10px;
    font-size: 16px;
    margin-bottom: 16px;
    border-radius: 5px;
    border: 1px solid #ccc;
    resize: vertical;
}
.button-row {
    display: flex;
    gap: 10px;
    margin-bottom: 16px;
    align-items: center;
}
button {
    padding: 10px 20px;
    font-size: 16px;
    background-color: #3e8e41;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.3s;
    outline: none;
}
button:focus {
    box-shadow: 0 0 0 2px #3e8e41aa;
}
button:hover {
    background-color: #357a38;
    transform: scale(1.05);
}
#permutations {
    margin-top: 20px;
    word-break: break-word;
}
#permutation-count {
    margin-top: 10px;
    color: #333;
}
#download-button-wrapper {
    position: relative;
    display: inline-block;
}
#download-options {
    position: absolute;
    left: 0;
    top: 110%;
    background-color: #f9f9f9;
    border: 1px solid #ccc;
    padding: 10px;
    border-radius: 5px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    z-index: 10;
    display: none;
}
.download-option {
    margin-right: 8px;
    background: #3e8e41;
    color: #fff;
    border: none;
    border-radius: 3px;
    padding: 6px 14px;
    cursor: pointer;
    font-size: 15px;
}
.download-option:last-child {
    margin-right: 0;
}
a {
    color: gray;
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
    color: #c7c7c7;
}
footer {
    margin-top: 32px;
    text-align: center;
    color: #888;
    font-size: 15px;
}