.upload-area {
    border: 2px dashed var(--border-color);
    padding: 2rem;
    text-align: center;
    margin-bottom: 1rem;
    border-radius: 8px;
    background: var(--tool-bg);
    transition: all 0.3s ease;
}
.upload-area.dragover {
    border-color: var(--primary-color);
    background-color: var(--bg-color);
}
.btn-upload {
    background: var(--primary-color);
    color: white;
    padding: 12px 25px;
    border-radius: 6px;
    cursor: pointer;
    display: inline-block;
    margin: 1rem 0;
}
.btn-upload:hover {
    filter: brightness(0.9);
}
.btn-download {
    background: #4CAF50;
    margin-top: 1rem;
}
.file-list {
    color: var(--text-color);
    margin: 1rem 0;
    font-size: 0.9em;
}
.loading {
    color: var(--text-color);
    margin: 1rem 0;
}
#fileInput {
    display: none;
}
.compression-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    background: var(--tool-bg);
    border-radius: 6px;
    overflow: hidden;
}
.compression-table th, .compression-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}
.compression-table th {
    background: var(--primary-color);
    color: white;
    font-weight: 600;
}
.compression-table tr:hover {
    background: rgba(0,0,0,0.1);
}