body {
    /*background-color: #f8f9fa;*/
    /*padding-bottom: 50px;*/
}
.header {
    background: linear-gradient(135deg, #0062cc, #0097ff);
    color: white;
    padding: 2rem 0;
    margin-bottom: 2rem;
    border-radius: 0 0 20px 20px;
}
.drop-zone {
    border: 3px dashed #007bff;
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    background-color: #f1f8ff;
    transition: all 0.3s;
    cursor: pointer;
}
.drop-zone:hover, .drop-zone.dragover {
    background-color: #e2f0ff;
    border-color: #0056b3;
}
.drop-zone i {
    font-size: 48px;
    color: #007bff;
    margin-bottom: 15px;
}
.preview-container {
    margin-top: 30px;
}
.img-preview {
    max-width: 100%;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}
.file-info {
    background-color: #f8f9fa;
    border-radius: 5px;
    padding: 15px;
}
.compression-card {
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    padding: 20px;
    margin-bottom: 20px;
}
.stats-box {
    background-color: #f8f9fa;
    border-left: 4px solid #007bff;
    padding: 15px;
    border-radius: 5px;
}
.custom-range:focus::-webkit-slider-thumb {
    box-shadow: 0 0 0 3px rgba(0,123,255,0.25);
}
.custom-range:focus::-moz-range-thumb {
    box-shadow: 0 0 0 3px rgba(0,123,255,0.25);
}
.btn-download {
    transition: all 0.3s;
}
.comparison-container {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 20px;
}
.image-card {
    flex: 1;
    min-width: 300px;
    background: white;
    border-radius: 10px;
    padding: 15px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}
.image-title {
    font-weight: 600;
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 2px solid #007bff;
}
.image-wrapper {
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: #f8f9fa;
    border-radius: 5px;
}
.image-wrapper img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}
.instructions {
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    border-radius: 10px;
    padding: 20px;
}
.feature-list {
    list-style-type: none;
    padding: 0;
}
.feature-list li {
    margin-bottom: 12px;
    padding-left: 30px;
    position: relative;
}
.feature-list li:before {
    content: "✓";
    position: absolute;
    left: 0;
    top: 0;
    width: 24px;
    height: 24px;
    background: #007bff;
    color: white;
    border-radius: 50%;
    text-align: center;
    line-height: 24px;
}
.slider-value {
    display: inline-block;
    width: 50px;
    text-align: center;
    background: #007bff;
    color: white;
    padding: 2px 5px;
    border-radius: 10px;
    margin-left: 10px;
}
@media (max-width: 768px) {
    .comparison-container {
        flex-direction: column;
    }
}