.udt-container {
    background: rgba(15, 15, 20, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 30px;
    color: #fff;
    max-width: 600px;
    margin: 20px auto;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
.udt-container h2, .udt-container h3 { color: #fff; margin-top: 0; }
.udt-container p { color: #aaa; font-size: 14px; }
.udt-container input[type="file"] {
    display: block;
    width: 100%;
    padding: 10px;
    margin: 15px 0;
    background: rgba(255, 255, 255, 0.05);
    border: 1px dashed rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    color: #fff;
}
.udt-container button {
    background: linear-gradient(135deg, #6e8efb, #a777e3);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
    transition: 0.3s;
    width: 100%;
}
.udt-container button:hover { opacity: 0.9; transform: translateY(-1px); }
.udt-status { margin-top: 15px; font-size: 14px; color: #00ffcc; }