* { box-sizing: border-box; }
    body { background: #f0f2f5; font-family: 'Segoe UI', 'Roboto', Arial, sans-serif; padding: 20px; }
    .container-main, .apps-container {
        /* 22.07.2026: keep Apps blocks aligned with the site-wide 1440 px width. */
        width: 100%; max-width: 1440px; margin: 0 auto; padding: 20px; background: #fff;
        border-radius: 16px; box-shadow: 0 10px 40px rgba(0,0,0,.1);
    }
    .apps-container { margin-top: 0; padding: 34px; }
    .apps-intro { color: #4a5568; font-size: 17px; line-height: 1.65; }
    .upload-card { width: 100%; margin-top: 28px; }
    .drop-zone {
        position: relative; display: flex; min-height: 220px; width: 100%;
        align-items: center; justify-content: center; padding: 30px;
        border: 2px dashed #90cdf4; border-radius: 14px; background: #f8fbff;
        color: #2c5282; font-size: 22px; font-weight: 600; text-align: center;
        cursor: pointer; transition: border-color .2s, background .2s, transform .2s;
    }
    .drop-zone:hover, .drop-zone.drag-over { border-color: #3182ce; background: #ebf8ff; }
    .drop-zone.drag-over { transform: scale(1.005); }
    .drop-zone input[type=file] { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; cursor: pointer; }
    .drop-zone.is-loading { pointer-events: none; opacity: .7; }
    .errorlist { margin: 8px 0; padding-left: 20px; color: #c53030; }