.box {
            background: #fff;
            padding: 25px;
            border-radius: 12px;
            box-shadow: 0 5px 20px rgba(0, 0, 0, .08);
        }

        h2 {
            margin-top: 0;
        }

        .form-group {
            margin-bottom: 18px;
        }

        label {
            display: block;
            margin-bottom: 7px;
            font-weight: bold;
        }

        input[type="text"],
        input[type="file"],
        textarea {
            width: 100%;
            padding: 11px;
            border: 1px solid #cbd5e1;
            border-radius: 7px;
            font-family: inherit;
        }

        textarea {
            min-height: 80px;
            resize: vertical;
        }

        .buttons {
            display: flex;
            gap: 10px;
            margin-top: 20px;
            flex-wrap: wrap;
        }

        button {
            border: 0;
            padding: 12px 22px;
            border-radius: 7px;
            cursor: pointer;
            font-family: inherit;
            font-size: 14px;
        }

        #previewBtn {
            background: #2563eb;
            color: white;
        }

        #printBtn {
            background: #16a34a;
            color: white;
        }

        #clearBtn {
            background: #e2e8f0;
            color: #111827;
        }

        .preview-title {
            margin-top: 30px;
            margin-bottom: 10px;
            font-weight: bold;
        }

        #preview {
            background: white;
            border: 1px solid #cbd5e1;
            min-height: 400px;
            padding: 25px;
            text-align: center;
        }

        #previewHeader {
            font-size: 20px;
            font-weight: bold;
            white-space: pre-wrap;
            margin-bottom: 20px;
        }

        #previewImage {
            max-width: 100%;
            max-height: 650px;
            object-fit: contain;
        }

        #previewFooter {
            font-size: 15px;
            white-space: pre-wrap;
            margin-top: 20px;
        }

        .empty {
            color: #94a3b8;
            padding-top: 100px;
        }