:root {
    --bg-color: #ffffff;
    --text-color: #000000;
    --input-bg: #ffffff;
    --input-border: #cccccc;
    --button-bg: #f0f0f0;
    --button-text: #000000;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #121212;
        --text-color: #ffffff;
        --input-bg: #1e1e1e;
        --input-border: #444444;
        --button-bg: #2d2d2d;
        --button-text: #ffffff;
    }
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: sans-serif;
    margin: 20px;
    padding: 0;
    max-width: 100%;
    box-sizing: border-box;
}

h1 {
    font-size: clamp(24px, 5vw, 32px);
    margin: 0 0 10px 0;
    word-wrap: break-word;
}

p {
    font-size: clamp(14px, 3vw, 16px);
    margin: 0 0 20px 0;
    line-height: 1.4;
}

.input-section {
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-width: 100%;
}

input[type="url"],
input[type="text"] {
    width: 100%;
    max-width: 500px;
    padding: 12px;
    font-size: 16px;
    border: 1px solid var(--input-border);
    background-color: var(--input-bg);
    color: var(--text-color);
    border-radius: 4px;
    box-sizing: border-box;
}

button {
    padding: 12px 20px;
    font-size: 16px;
    background-color: var(--button-bg);
    color: var(--button-text);
    border: 1px solid var(--input-border);
    border-radius: 4px;
    cursor: pointer;
    max-width: 200px;
}

.result-section {
    display: none;
    margin-top: 20px;
    max-width: 100%;
}

.result-container {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 10px;
    max-width: 100%;
}

#testLink {
    color: #0066cc;
    word-wrap: break-word;
    display: block;
    margin-top: 10px;
}

@media (min-width: 768px) {
    .input-section {
        flex-direction: row;
        align-items: flex-start;
    }
    
    input[type="url"] {
        width: 300px;
    }
    
    .result-container {
        flex-direction: row;
        align-items: center;
    }
    
    #shortUrl {
        width: 400px;
    }
}