body {
    font-family: Arial, sans-serif;
    margin: 0 auto;
    padding: 5%;
    box-sizing: border-box;
    line-height: 1.6;
    max-width: 500px;
    text-align: center;
    background-color: #121212;
    color: #e0e0e0;
}

h1 {
    font-size: 1.8rem;
    text-align: center;
    margin-bottom: 5%;
    color: #ffffff;
}

h1 a {
    color: green;
    text-decoration: none;
}

h1 a:hover {
    color: lightgreen;
}

.submenu {
    display: none;
}

.submenu.visible {
    display: block;
}

.hidden {
    display: none;
}

.hidden.visible {
    display: block;
}

.form-group {
    margin-bottom: 5%;
}

.subtitle {
    text-align: center;
    font-size: 1rem;
    color: #b0b0b0;
    margin-bottom: 20px;
    white-space: normal;
    display: block;
}
.subtitle a {
    color: green;
    text-decoration: none;
}

.subtitle a:hover {
    color: lightgreen;
}

.subtitle .code {
    font-family: monospace;
    color: lightblue;
}

label {
    font-size: 1rem;
    font-weight: bold;
    margin-bottom: 2%;
    display: block;
}

input {
    width: 100%;
    font-size: 1rem;
    padding: 3%;
    margin-top: 2%;
    border: 1px solid #333;
    border-radius: 5px;
    box-sizing: border-box;
    background-color: #1e1e1e;
    color: #ffffff;
}

input:focus {
    outline: none;
    border-color: lightgrey;
    box-shadow: 0 0 5px rgba(76, 175, 80, 0.5);
}

button {
    padding: 3%;
    font-size: 1rem;
    font-weight: bold;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    margin-top: 5%;
    width: 90%;
    max-width: 90%;
    display: block;
    margin-left: auto;
    margin-right: auto;
    background-color: green;
    color: #ffffff;
}

button.orange {
    background-color: darkorange;
}

button.red {
    background-color: red;
}

button:disabled {
    background-color: #555;
    color: #ccc;
    cursor: not-allowed;
}

.word-wrap {
    white-space: pre-wrap;
    word-wrap: break-word;
    overflow-wrap: break-word;
    word-break: break-word;
    max-width: 100%;
    display: block;
    padding: 2%;
    border-radius: 2%;
    background-color: #1e1e1e;
    color: #e0e0e0;
}

.checkbox-container {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    width: 100%;
    margin-top: 2%;
}

.checkbox-container input[type="checkbox"] {
    width: auto;
    height: auto;
    margin: 0;
    margin-right: 2%;
    flex-shrink: 0;
}

.checkbox-container label {
    font-size: 0.85rem;
    line-height: 1.2;
    text-align: left;
    flex-grow: 1;
    display: inline-block;
    white-space: normal;
    width: 100%;
    margin: 0;
    color: #e0e0e0;
}

input[type="checkbox"]:checked {
    accent-color: green;
}

.footer {
    text-align: center;
    margin-top: 5%;
    font-size: 0.9rem;
    color: #b0b0b0;
}

.footer a {
    color: green;
    text-decoration: none;
}

.footer a:hover {
    color: lightgreen;
}

.disclaimer {
    font-size: 0.8rem;
}

.disclaimer .highlight {
    color: red;
}

#resultMessage {
    margin-top: 5%;
    font-size: 0.9rem;
    font-family: monospace;
}

.textarea-metadata {
    width: 100%;
    min-height: 100px;
    max-height: 500px;
    resize: vertical;
    padding: 10px;
    border: 1px solid #333;
    border-radius: 5px;
    font-size: 14px;
    box-sizing: border-box;
    transition: border-color 0.3s ease;
    background-color: #1e1e1e;
    color: #ffffff;
    font-family: monospace;
}

.textarea-metadata:focus {
    border-color: lightgrey;
    outline: none;
    box-shadow: 0 0 5px rgba(76, 175, 80, 0.5);
}

@media screen and (min-width: 768px) {
    body {
        padding: 2%;
    }

    h1 {
        font-size: 1.8rem;
    }

    button {
        max-width: 450px;
        margin: 2% auto;
        display: block;
    }

    #resultMessage {
        max-width: 500px;
        margin: 0 auto;
    }
}

.result-container {
    display: none;
    margin-top: 1rem;
    text-align: left;
}

.result-container.visible {
    display: block;
}

.result-container.debug-visible {
    outline: 2px dashed rgba(255, 165, 0, 0.4);
}