.upload-container {
    width: 100%;
    height: 200px;
    border: 2px dashed #4a90e2;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: border-color 0.3s, background 0.3s;
    background-color: #183b64;
    text-align: center;
}

    .upload-container.dragover {
        border-color: #1a73e8;
        background-color: #e6f0ff;
    }

.upload-inner {
    pointer-events: none;
}

    .upload-inner .upload-icon {
        font-size: 48px;
        margin-bottom: 12px;
    }

    .upload-inner .upload-text {
        font-family: 'Roboto', sans-serif;
    }