.hppm-container {
    width: 1024px;
    max-width: 100%;
    margin: 0 auto;
    padding: 20px;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hppm-step-container {
    width: 100%;
    max-width: 800px;
    text-align: center;
}

.hppm-step {
    margin-bottom: 20px;
}

.hppm-step h2, .hppm-step h3 {
    margin-top: 0;
}

#hppm-image-upload, #hppm-photo-size, #hppm-custom-size input, #hppm-border-width, #hppm-border-color, #hppm-output-size, #hppm-custom-output input {
    margin: 10px 0;
    padding: 8px;
    width: 100%;
    max-width: 200px;
    display: block;
    margin-left: auto;
    margin-right: auto;
}

#hppm-crop-container, #hppm-brightness-preview, #hppm-border-preview, #hppm-output-preview {
    margin: 20px auto;
    max-width: 600px;
}

#hppm-crop-image {
    max-width: 100%;
}

.hppm-crop-controls {
    margin: 10px 0;
}

.hppm-crop-btn {
    padding: 8px 16px;
    border: none;
    cursor: pointer;
    margin: 5px;
    display: inline-block;
    border-radius: 4px;
}

.hppm-crop-instructions {
    font-size: 14px;
    margin: 10px 0;
}

#hppm-border-preview-canvas {
    max-width: 400px;
    width: 100%;
    border: 1px solid #ccc;
}

#hppm-output-canvas {
    max-width: 600px;
    width: 100%;
    border: 1px solid #ccc;
}

.hppm-next-btn, .hppm-back-btn, #hppm-download-btn {
    padding: 10px 20px;
    border: none;
    cursor: pointer;
    margin: 10px 5px;
    display: inline-block;
    border-radius: 4px;
}

.hppm-credit {
    text-align: center;
    font-size: 12px;
    margin-top: 20px;
}

.hppm-credit a {
    text-decoration: none;
}

.hppm-credit a:hover {
    text-decoration: underline;
}