* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    display: grid;
    place-items: center;
    background: #f7592b;
    font-family: Arial, sans-serif;
    padding: 16px;
}

.card {
    width: 100%;
    max-width: 440px;
    background: #fff;
    border-radius: 14px;
    padding: 24px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.14);
}

h1 {
    margin: 0 0 16px;
    text-align: center;
}

label {
    display: block;
    font-weight: 700;
    margin-bottom: 8px;
}

textarea {
    width: 100%;
    resize: vertical;
    border: 1px solid #d5d5d5;
    border-radius: 10px;
    padding: 10px;
    font-size: 14px;
    margin-bottom: 12px;
}

button,
.download {
    width: 100%;
    border: 0;
    border-radius: 10px;
    padding: 11px 14px;
    font-weight: 700;
    cursor: pointer;
    text-align: center;
    text-decoration: none;
    display: inline-block;
}

button {
    background: #f7592b;
    color: #fff;
    margin-bottom: 14px;
}

.preview {
    min-height: 220px;
    border: 1px dashed #ccc;
    border-radius: 10px;
    display: grid;
    place-items: center;
    margin-bottom: 12px;
    padding: 12px;
    background: #fafafa;
}

#qrImage {
    max-width: 100%;
    display: none;
}

.download {
    background: #222;
    color: #fff;
    margin-bottom: 10px;
    pointer-events: none;
    opacity: 0.5;
}

.download.active {
    pointer-events: auto;
    opacity: 1;
}

#message {
    min-height: 20px;
    margin: 0;
    font-size: 14px;
    text-align: center;
}