#qr-input {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border);
    border-radius: 6px;
    font-size: 1rem;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    transition: border-color 0.3s ease;
}

#qr-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

#qr-input::placeholder {
    color: var(--text-secondary);
}

#qr-output {
    background: var(--bg-primary);
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid var(--border);
}

#qr-code {
    background: white;
    padding: 0.75rem;
    border: 2px solid white;
    border-radius: 6px;
    display: inline-block;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

#qr-code canvas {
    display: block;
    margin: 0 auto;
}

#qr-code img {
    max-width: 100%;
    height: auto;
}

#download-qr-btn {
    margin-top: 1rem;
}

@media (max-width: 640px) {
    #qr-output {
        padding: 0.75rem;
    }

    #qr-code {
        padding: 0.75rem;
    }
}

[data-theme="dark"] #qr-code {
    border: 2px solid white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}