/* Botón flotante de upload (esquina inferior derecha) */
#uploadFloatBtn {
    bottom: 20px;   /* 20px desde el borde inferior */
    right: 20px;    /* 20px desde el borde derecho */
    border: none;
    background: transparent;
    cursor: pointer;
    display: block;
    position: fixed;
    opacity: 0.3;   /* Opacidad inicial (el usuario la pidió en 0.3) */
    transition: opacity 0.3s ease;
    z-index: 9999;
}

#uploadFloatBtn:hover {
    opacity: 1;     /* Visible al pasar el cursor */
}

#uploadFloatBtn img {
    display: block;
    height: 48px;
    width: 48px;
}

/* Modal del formulario de upload */
#uploadModal {
    background: rgba(0, 0, 0, 0.6);
    display: none;
    height: 100%;
    left: 0;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 10000;
}

#uploadModal.open {
    display: block;
}

#uploadForm {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.9);
    color: #222;
    font-family: Arial, sans-serif;
    margin: 15vh auto 0;
    padding: 20px 24px;
    width: 340px;
}

#uploadForm h3 {
    font-size: 16px;
    margin: 0 0 12px;
}

#uploadForm label {
    display: block;
    font-size: 13px;
    margin: 10px 0 4px;
}

#uploadForm input[type="password"],
#uploadForm input[type="file"] {
    width: 100%;
    box-sizing: border-box;
}

#uploadForm .uploadActions {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    margin-top: 16px;
}

#uploadForm button {
    border: 1px solid #888;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    padding: 6px 14px;
}

#uploadForm #uploadSubmitBtn {
    background: #3b6fd4;
    border-color: #3b6fd4;
    color: #fff;
}

#uploadForm #uploadSubmitBtn:disabled {
    background: #999;
    border-color: #999;
    cursor: not-allowed;
}

#uploadStatus {
    font-size: 13px;
    margin-top: 10px;
    min-height: 18px;
}

#uploadStatus.error { color: #c0392b; }
#uploadStatus.ok    { color: #27ae60; }